Synthesized Function Generator
Yokogawa Electric Corporation
IM 706111-01E 1st Edition
Foreword Thank you for your purchase of the FG200/FG300-Series Function Generator. This user’s manual explains the FG’s functions and operating methods, and presents important safety and handling information. Please read through the manual carefully before beginning to use your new FG, and store in a safe place for future reference. We recommend that you keep the manual close to the unit so that you can refer to it whenever needed. Please note that your FG200/3000-Series Function Generator comes with two manuals. The other manual in the set is identified below.
Na m e
Manual No.
Content
FG200/FG300 GP GP-IB In Interface User’s Manual
IM1706111-12E
Explains th the us use of of th the GP GP-IB in interface.
Notices • Yokogawa Yokogawa reserves the the right to change change product functions functions,, performance, performance, and other other specifications without notice for purpose of product improvement. • Yokogawa Yokogawa has made a good-faith good-faith effort effort to produce an accurate accurate and up-to-date up-to-date manual. manual. If you notice any errors or have any questions concerning the explanations herein, please consult one of the Yokogawa representatives listed on the back cover. • No portion portion of this document document may be photocopied photocopied or reproduced reproduced without without permission permission of the the manufacturer. • The warranty warranty is included included in the box containing containing the FG, and cannot cannot be reissued. reissued. Please Please read the warranty carefully and store in a safe place.
Trademarks • MS-DOS is is a registered registered trademark trademark of of Microsoft Microsoft Corporatio Corporation. n. • IBM and PC/AT PC/AT are registe registered red trademarks trademarks of the IBM Corpora Corporation. tion. • Lotus 1-2-3 1-2-3 is a registered registered trademark trademark of the Lotus-Dev Lotus-Developmen elopmentt Corporation. Corporation.
Revisions Sept Septemb ember er 199 1995 5
Firs Firstt edit editio ion n
Disk No. HF05 1st Edition: September 1995 (YG) All Rights Reserved, Copyright © 1995 Yokogawa Electric Corporation IM 706111-01E
1
Checking the Box When you first open the box, please check to ensure that it contains the correct FG model and accessories, and that all items are undamaged. In you notice an problem please contact your dealer promptly.
FG200/FG300 Unit The rear panel carries a nameplate indicating the FG’s model name and suffix code. Please check the nameplate and confirm that you have received the model that you ordered.
R
C
R
DIGITAL
C
CTRL
I/O
CIRCUIT TRIG IN/ GATE IN
SWP HOLD IN
TTL
CH1 SYNC OUT
TL
G P -I B
TL
CH1 MAKER OUT
TL
CH1 SWP OUT
SUM IN/ VCA IN
0V
10V
BREAKER
SWP CTRL IN
10V
I EE E 48 8
100-240V 00-240V AC 50 60Hz 125 125VA MAX 0 - 60Hz VA MAX
WARNING O AVOID AVOID ELECTRIC ELECTRIC SHOCK, SHOCK, TO ROTECTIVE GROUNDING GROUNDING CONDUCTOR CONDUCTOR INNTHE THE PROTECTIVE
MODEL ODEL
OWER CORD MUST MUST BE BE CONNECTED CONNECTED TO TOGROUND. GROUND. POWER
Nameplate
SUFFIX UFFX
O NOT NOT REMOVE REMOVE COVERS. COVERS. DO EFER SERVICING SERVICING TO TO QUALIFIED QUALIFIED PERSONNEL PERSONNEL ONLY. ONLY. REFER
NO. Made n Japan
MODEL and SUFFIX
Model 706111 706112 706121
Su f f i x
Type
· · · · · · · · · · · · · FG 21 21 0 · · · · · · · · · · · · · FG 22 22 0 · · · · · · · · · · · · · FG310
1 -C -C h m od od el el 2 -C -C h m od od el el 1-Ch model model (with (with arb sweep sweep and simple simple arb wavefo waveform rm functions) 706122 · · · · · · · · · · · · · FG320 2-Ch model model (with (with arb sweep sweep and simple simple arb wavefo waveform rm functions) Powe Powerr volt voltag agee -0· -0· · · · · · · · · · · 100-240VAC Power cord -D· · · · · · · UL/CSA standard Part No.: A1006WD -F· -F· · · · · · · VDE standard Part No.: A1009WD -J· -J· · · · · · · BS standard Part No.: A1023WD -R· -R· · · · · · · SAA standard Part No.: A1024WD Option /R1· · External sweep control
Instrument No. Please mention this number when consulting your dealer regarding any problem.
Note We recommend that you retain the original box. The box will be useful whenever you need to carry or ship your FG.
2
IM 706111-01E
Checking the Box
Supplied Accessories Please check that the box contains all of the following accessories, and that all items are undamaged. One of these power cords. (Check the letter code to confirm that you have the correct cord.)
UL/CSA standard A1006WD
VDE standard A1009WD
D
Rear-leg rubber mounts (x 2) A9088ZM
BS standard A1023WD
F
SAA standard A1024WD
R
J
One 3.5" floppy disk B9924WB (Contains sample waveform data, GP-IB programs.)
This User's Manual (IM706111-01E) GP-IB Interface User's Manual (IM706111-12E)
Optional Accessories The FG supports the following optional accessories. If you have ordered any of these accessories, make sure that all ordered items are included and are undamaged. Please contact your dealer if you have any questions about, or would like to order, any of these accessories.
IM 706111-01E
Name
Model
Description
Parallel connection cable BNC cable (1m) BNC cable (2m) BNC alligator cable (1m) Adapter Adapter Adapter Rack-mount kit Rack-mount kit Rack-mount kit Rack-mount kit
705926 366924 366925 366926 366921 366927 366928 751533-E3 751534-E3 751533-J3 751534-J3
1-meter length; 26-pin connector 1-meter length 2-meter length 1-meter length BNC plug - banana connector jack BNC plug - RCA jack BNC jack - RCA plug For EIA single mount For EIA multimount For JIS single mount For JIS multimount
3
Safety Precautions This product includes a protective grounding terminal and meets the IEC-standard safety grading. To ensure safe operation, please observe the safety precautions given below. Yokogawa accepts no responsibility for damage caused by failure to observe these precautions. • The following symbol is used on FG hardware to indicate potential hazard.
This symbol appears on hardware to indicate that handling is potentially hazardous, and that machine damage or personal injury may result if handling is not conducted in strict accordance with information given in the User’s Manual or Service Manual.
• Please observe all of the warnings below. Failure to do so may lead to potentially lifethreatening electrical shock.
Warning • Power Supply Ensure the source voltage matches the voltage of the power supply before turning on the power.
• Power Cord and Plug To prevent an electric shock or fire, be sure to use the power supply cord supplied by YOKOGAWA. The main power plug must be plugged in an outlet with protective grounding terminal. Do not invalidate protection by using an extension cord without protective grounding.
• Protective Grounding Make sure to connect the protective grounding to prevent an electric shock before turning on the power.
• Necessity of Protective Grounding Never cut off the internal or external protective grounding wire or disconnect the wiring of protective grounding terminal. Doing so poses a potential shock hazard.
• Defect of Protective Grounding and Fuse Do not operate the instrument when protective grounding or fuse might be defective.
• Do not Operate in an Explosive Atmosphere Do not operate the instrument in the presence of flammable liquids or vapors. Operation of any electrical instrument in such an environment constitutes a safety hazard.
• Do not Remove any Covers There are some areas with high voltage. Do not remove any cover if the power supply is connected. The cover should be removed by qualified personnel only.
• External Connection To ground securely, connect the protective grounding before connecting to measurement or control unit.
4
IM 706111-01E
Using The Manual This manual consists of 12 chapters, three Appendixes, and an index, as described below.
Chapter
Title
Content
1
Features and Functions
Explains the principles of operation and introduces each of the FG’s features and functions. Please read this information carefully to familiarize yourself with the FG’s capabilities. This chapter does not present operational details.
2
Controls and Connectors
Explains the significance and use of the front-panel keys, frontpanel and rear-panel connectors, screen displays, and touch-panel buttons.
3
Preliminaries
Includes safety related information, and explains how to install, connect up, and switch on the FG.
4
Basic Output Settings
Explains how to set basic output parameters: output mode, output waveform, voltage, frequency, and others.
5
Sweep Setup
Explains how to set up sweep output.
6
Modulation Setup
Explains how to set up modulated output.
7
Sequence Settings and Output (FG310/FG320)
Explains how to set up and operate sequenced output.
8
Arbitrary Waveforms Explains how to define arbitrary waveforms. and Sweep Patterns (FG310/FG320)
9
External Control Signals and Output Signals
Explains the usage of control-signal inputs, and the meaning and usage of FG output signals.
10
Additional Features
Explains various other operational features: floppy-disk formatting, autoloading, saving/restoring, and others.
11
Troubleshooting and Testing
Explains error messages, troubleshooting, self-test features, and performance inspection methods and criteria.
12
Specifications
Presents the FG200/300-Series specifications.
Appendixes
Appendix 1 shows how to set up and apply an arbitrary sweep pattern. Appendix 2 includes information about handling of log and log-step sweeps. Appendix 3 describes the content, structure, and usage of the supplied floppy disk.
Index
IM 706111-01E
5
Notations and Symbols Used in this Manual Dimensional units k ....... Means 1000. Example: 100kHz is equivalent to 100,000Hz. K ...... Means 1024. Example: 128KW waveform memory
Indications The [ ] border denotes a hard key. For example, [TRIG].
Symbols The following symbols are used to alert the reader to important information.
Corresponds to the same symbol appearing on the FG hardware. Indicates that handling is potentially hazardous, and that machine damage or personal injury may result if handling is not conducted in strict accordance with information given in the User’s Manual.
Warning
Denotes essential safety-related information. Failure to observe warnings may potentially lead to bodily injury or death.
Caution Note
6
Failure to follow this information may result in damage to your equipment. Presents important information related to FG handling.
IM 706111-01E
Contents Foreword ............................................................................................................................................... 1 Checking the Box ................................................................................................................................. 2 Safety Precautions ............................................................................................................................... 4 Using The Manual ................................................................................................................................ 5 Notations and Symbols Used in this Manual .................................................................................... 6 Chapter 1
1
2
Functions
1.1
FG200/FG300 Waveform Generation Mechanism ........................................................................................1-1
1.2
FG200/FG300-Series Internal Configuration ................................................................................................. 1-3
1.3
Selecting the Output Mode (Continuous, Trigger, Gate, DC) ........................................................................1-4
1.4
Selecting the Output Function (Output Waveform) .......................................................................................1-5
1.5
Setting the Output Conditions (Frequency, Voltage, and Attenuation)..........................................................1-6
1.6
Sweep Setup....................................................................................................................................................1-7
1.7
Modulation Setup............................................................................................................................................ 1-9
1.8
Sequence Setup ............................................................................................................................................. 1-11
1.9
Creating Arbitrary Waveforms ..................................................................................................................... 1-12
1.10
Signal I/O ..................................................................................................................................................... 1-13
3
4
5
1.11 Other Functions ............................................................................................................................................ 1-14
Chapter 2 2.1
Front Panel ......................................................................................................................................................2-1
2.2
Rear Panel .......................................................................................................................................................2-2
2.3
Screen Displays ..............................................................................................................................................2-3
Chapter 3
!
!
6
Name and Use of Each Part
7
Before Starting Observation and Measurement of Waveforms
3.1
Usage Precautions...........................................................................................................................................3-1
3.2
Installation ......................................................................................................................................................3-2
3.3
Connecting the Power Cord ............................................................................................................................3-4
3.4
Power ON/OFF ............................................................................................................................................... 3-5
3.5
Waveform Outputs.......................................................................................................................................... 3-6
8
9 Chapter 4 4.1
Common Operations Setting the Output Mode ................................................................................................................................. 4-1 MODE:CONT/TRIG/GATE/DC
4.2
Selecting the Output Waveform ..................................................................................................................... 4-2
10
FUNC:SINE/SQUARE/TRIANGLE/PULSE/ARBITRARY(FG310/FG320 only)
4.3
Setting the Output Frequency .........................................................................................................................4-3 FREQ:0.001mHz to 15MHz/0.001mHz to 200kHz
4.4
Setting the Output Voltage .............................................................................................................................4-4
11
AMPL:–20Vpp to 20Vpp, OFFSET:–10V to 10V, HIGH LEVEL/LOW LEVEL:–10V to 10V,TTL LEVEL
4.5
Setting the Phase ............................................................................................................................................. 4-7 PHASE:–10000deg to 10000deg
4.6
Setting the Output Attenuator; Turning OFF the Output ................................................................................4-8
12
OUTPUT:1/1/1/10/1/100,OFF
4.7
Setting the Trigger Source and Burst Count ................................................................................................... 4-9 BURST:1 to 65535cycles, TRIG INT/EXT, TRIG FREQ:1mHz to 50kHz
Appendix
Index IM 706111-01E
7
Contents
Chapter 5 5.1
Setting the Sweep Output Setting the Sweep Mode ................................................................................................................................. 5-1 S. MODE:REPEAT/SINGLE/SINGLE & HOLD
5.2
Setting the Sweep Type .................................................................................................................................. 5-2 S. TYPE:LINEAR/LOG/LINEAR STEP/LOG STEP/ARBITRARY(FG310/320 only), (SWEEP RATIO), (STEP)
5.3
Setting the Sweep Item ................................................................................................................................... 5-3 S. ITEM:FREQ/PHASE/AMPL/OFFSET/(DUTY)/FREQ & AMPL
5.4
Setting the Sweep Conditions ......................................................................................................................... 5-4 START FREQ, STOP FREQ, CENTER FREQ, SPAN FREQ START PHASE, STOP PHASE, CENTER PHASE, SPAN PHASE START AMPL, STOP AMPL, CENTER AMPL, SPAN AMPL START OFFSET, STOP OFFSET, CENTER OFFSET, SPAN OFFSET START DUTY, STOP DUTY, CENTER DUTY, SPAN DUTY SWEEP TIME
5.5
Controlling the Sweep (ON/OFF and HOLD) ................................................................................................ 5-6 SWEEP OFF/ON, HOLD OFF/ON
5.6
Setting the Sweep Marker............................................................................................................................... 5-7 START MARKER, STOP MARKER, CENTER MARKER, SPAN MARKER
Chapter 6 6.1
Setting the Modulation Output Setting the Modulation Type .......................................................................................................................... 6-1 M. TYPE:AM/DSB-SC AM/FM/PM/PWM/OFFSET
6.2
Selecting the Modulator Waveform ................................................................................................................6-2 M. F UNC:SINE/TRIANGLE/PULSE/ARBITRARY(FG310/320 only)
6.3
Setting the Modulation Parameters; Switching Modulation ON/OFF ........................................................... 6-3 DEPTH, DEVIATION, MODULATE ON/OFF
Chapter 7 7.1
Setting Up Sequences with the Sequence Editor (FG310/FG320 only) .........................................................7-1
7.2
Outputting a Sequence (FG310/FG320 only) ................................................................................................. 7-3
7.3
Saving, Loading, and Deleting Sequence Data Files (FG310/FG320 only)................................................... 7-4
Chapter 8
Arbitrary Waveforms and Sweep Patterns (FG310/320 only)
8.1
Loading Waveform Data (FG310/FG320 only) ............................................................................................. 8-1
8.2
Creating an Arbitrary Waveform from Text Data (FG310/FG320 only) ....................................................... 8-4
8.3
Saving and Deleting Waveforms and Text Files (FG310/FG320 only) .........................................................8-8
Chapter 9
8
Setting and Outputting the Sequence (FG310/320 only)
External Control Signals and Output Signals
!
9.1
Controlling Waveform Output with TRIG/GATE Input ................................................................................9-1
!
9.2
Holding Sweep with the SWP HOLD input ................................................................................................... 9-3
!
9.3
Adding an Output Offset through the SUM IN Input ..................................................................................... 9-4
!
9.4
Controlling Amplitude through the VCA Input ..............................................................................................9-5
!
9.5
Using the CH1 SYNC OUT terminal ............................................................................................................. 9-6
!
9.6
Using the CH1 MARKER OUT terminal....................................................................................................... 9-7
!
9.7
Using the CH1 SWP OUT terminal ................................................................................................................9-9
!
9.8
Connecting and Synchronizing Multiple Units ............................................................................................9-10
!
9.9
Using SWP CTRL IN (/R1 Option) Analog Sweep Control ........................................................................ 9-12
!
9.10 Using DIGITAL CTRL I/O (/R1 Option) ....................................................................................................9-14
IM 706111-01E
Contents
Chapter 10 Other Operations 10.1 Synchronizing Phases of Two Channels (FG220/FG320 only) ................................................................... 10-1 ! 10.2 Formatting Floppy Disks (FG310/FG320 only) ........................................................................................... 10-2
10.3 Floppy-Disk Autoload, Load, and Save (FG310/FG320 only) ....................................................................10-4 10.4 Saving/Recalling Output Settings (to/from internal memory)......................................................................10-6
1
10.5 Simultaneous Two-Channel Setting (FG220/FG320 only) ..........................................................................10-7 10.6 Copying Output Settings Across Channels (FG220/FG320 only) ...............................................................10-8 10.7 Initializing the Output Settings ..................................................................................................................... 10-9 10.8 Adjusting Contrast; Switching Button Sound ON/OFF ............................................................................. 10-10
2
10.9 Setting the Date and Time (FG310/FG320 only) .......................................................................................10-11
3
Chapter 11 Troubleshooting, Maintenance and Inspection 11.1 Error Messages: Causes and Corrections .....................................................................................................11-1 11.2 Troubleshooting ............................................................................................................................................ 11-3 11.3 Running Self-Tests ....................................................................................................................................... 11-4 11.4 Running performance tests ........................................................................................................................... 11-6 !
4
11.5 Location and Operation of the Circuit Breaker .......................................................................................... 11-14
Chapter 12 Specifications 12.1 Performance Specifications .......................................................................................................................... 12-1
5
12.2 Functional Specifications ............................................................................................................ .................. 12-3 12.3 Supplementary Input/Output ........................................................................................................................12-4 12.4 Display, Disk Drive, GP-IB Communication Interface ................................................................................12-5
6
12.5 General Specifications ..................................................................................................................................12-6 12.6 Dimensions ................................................................................................................................................... 12-7
7
Appendix Appendix 1 Setting Up for Arbitrary Sweep (Example) .................................................................................... App-1 Appendix 2 Logarithmic Sweeps on Negative Values ...................................................................................... App-2 Appendix 3 Floppy-Disk Sample Data (included with models FG310 and FG320 only) ................................ App-3
8
Index
9
10
11
12
Appendix
Index IM 706111-01E
9
1.1 FG200/FG300 Waveform Generation Mechanism Digital Generation
1
A function generator can be classified according to the method it uses to generate waves. The FG200/FG300-series of function generators creates waves by direct digital synthesis (DDS). The two other available methods are analog generation and PLL generation. These three methods are outlined below.
Analog generation An analog generator employs an integrator and comparator to produce triangular and square waves. It produces sine waves by passing triangular waves through a circuit comprised of diodes and resistors. Analog generation is inexpensive to implement, and accounts for the large majority of function generators produced to date. But frequency precision is poor, and low-frequency ranges tend to be unstable.
PLL (phase-locked loop) generation The PLL circuit comprises (a) a voltage-controlled oscillator that regulates the output frequency in accordance with an applied control voltage, (b) a programmable, arbitrarily settable frequency divider, (c) a base oscillator, (d) a phase comparator that detects the phase difference between the base oscillator and the , and (e) a low-pass filter. The detected phase differential regulates the control voltage, effectively synchronizing the output frequency with the base oscillator. Frequency precision is therefore quite high. The drawbacks are the high implementation cost (the circuit must be complex in order to achieve high resolution), slow frequency switching, and poor stability in the low-frequency ranges.
DDS generation A DDS function generator stores digital definitions for various waveforms within memory. The user selects a waveform and frequency (clock); the generator responds by reading out the data for the selected wave at the designated clock speed. The retrieved data passes through a D/A converter for conversion into the analog waveform. The DDS method is fully digital, and is free of the drawbacks inherent in other generation methods.
Principle of DDS wave generation The circuitry consists of the crystal oscillator that generates the base clock signal, a phase calculator section, a waveform memory area, a digital-to-analog converter, and a low-pass filter, as illustrated below. The waveform memory stores data defining one full cycle of the selected wave. Memory addresses correspond directly to wave phases. Phase calculator block N
Adder
Waveform output D/A
Latch
LPF
Waveform memory
Crystal oscillator
A typical generation sequence begins with values N and 0 applied to the adder’s inputs, producing a result value of N. The latch outputs the result in sync with the clock cycle from the crystal oscillator. The first clock cycle therefore produces value N, which becomes the first address read out from memory. The latch output feeds back into the adder, so that both inputs now take value N, causing the adder to output a value of 2N. The latch therefore outputs 2N at the next clock cycle. The latch continues to output successively higher values (3N, 4N, 5N...) with each successive clock pulse. Each of these output values specifies an address to be read from waveform memory. The D/A converter converts the retrieved digital values into an analog signal. The LPF removes the resulting signal’s high-frequency components. IM 706111-01E
1-1
F u n c t i o n
1.1 FG200/FG300 Waveform Generation Mechanism Notice that the N value controls the frequency at which the waveform is produced for any given clock setting. If the value is equal to one address increment, successive clock cycles retrieve data from consecutive addresses. If the value is increased to three address increments, successive clock cycles will retrieve data from every third address (jumping over two addresses for each read), effectively tripling the frequency. With the DDS method, therefore, you can vary the frequency by changing the N value supplied to the adder. To change the waveform itself, you simply load a different waveform pattern into waveform memory.
1-2
IM 706111-01E
1.2 FG200/FG300-Series Internal Configuration Block Diagram
1
SUM IN/ VCA IN /R1 OPTION DIGITAL CTRL I/O
D-sub ADC
SWP CTRL IN
DAC
DDS ASIC
TRIG IN/ GATE IN SWP HOLD IN OPER SYNC IN
Marker output
26pin CONN
Trigger control circuit
OPER SYNC OUT 26pin CONN
64-bit DDS phase calculator
Sweep data memory
Sweep-data multiplexer
Sweep output
LPF
Offset adjustment/modulation
LPF
Amplitude adjustment/ modulation
LPF
48-bit DDS phase calculator
Waveform memory
Waveform output DAC
GP-IB
LPF
Comparator (for squarewave generation)
Triangle/pulse/ arbitrary waveform
FDD
Output attenuator 1/1 Output ON/OFF OUTPUT Amplifier 1/10 ± 10V 1/100 CH1 SYNC OUT /R1 OPTION
Event output Base clock
CH1 SWP OUT
DAC
Sine/square waveform
CPU
CH1 MARKER OUT
LPF
DAC
LCD/ Touch panel Keyboard
F u n c t i o n
/R1 OPTION DIGITAL D-sub CTRL I/O
D-sub
DIGITAL CTRL I/O
CH1 CH2
Signal flow Data defining one cycle of the waveform is loaded into the 8KW waveform memory. Phase incrementing data is set into the 48-bit phase calculator, determining the size of the phase increment (and thereby setting the frequency). The phase calculator then begins outputting values accordingly, with each value pointing to a specific address in the waveform memory. The addressed data values are read out from waveform memory and pass through the 12-bit “waveform output” D/A converter. The resulting signal then passes through the appropriate lowpass filter (depending on waveform type) for removal of high-order harmonics. If square-wave output is selected, the square wave is generated internally from a sine wave by the action of a comparator located after the LPF. The signal then flows through an analog multiplier for amplitude adjustment. An offset is then added. The resulting signal then moves through an amplifier, then through the output attenuator, and finally out through the FG’s OUTPUT connector. The 48-bit phase calculator and D/A converter used for generating the output waveform operate at a clock speed of 40.2107MHz. Sweep operation is handled by a separate DDS circuit. A 16KW sweep memory stores sweep parameters, and a 64-bit phase calculator reads data out from this memory in accordance with the selected sweep timing. The data moves into the sweep-data multiplexer, which latches the values and directs them to the appropriate parameter registers. The frequency, phase, and duty values are latched in internal ASIC registers for output to the 48-bit phase calculator. Amplitude, offset, and sweep values, in contrast, each move through a separate 16-bit D/A converter, with each resulting signal passing through a dedicated filter, then through other processing elements (analog multiplier, etc.) The 64-bit phase calculator and D/A converters used for waveform oscillation operate at a clock speed of 628.292kHz. The trigger-control circuit controls ASIC operation in accordance with external control and synchronization signals. The /R1 option allows an external analog signal to control sweep. The analog signal is converted to digital by a 12-bit A/D converter, with each resulting digital value pointing to a specific address in the sweep memory. The FG’s high-resolution LCD and touch panel are designed to facilitate entry of parameter values, so that operation is user-friendly. Models FG310 and FG320 also feature an internal floppy-disk drive for saving and loading data to and from disk. IM 706111-01E
1-3
1.3 Selecting the Output Mode (Continuous, Trigger, Gate, DC) You can select any of four output modes, as follows.
Continuous (CONT) The FG generates a continuous wave. Use this mode, for example, for sweep or modulated output. OUT ON/OFF Waveform output
Trigger (TRIG) The FG outputs a burst signal in sync with a trigger signal. The burst signal consists of a specified number of cycles of the designated waveform. You can choose between external and internal triggering, as follows.
• External trigger Input the trigger signal from an external source, or generate it by pressing the TRIG key on the front panel, or by issuing a GP-IB command. OUT ON/OFF Trigger signal Waveform output Where burst count = 3
• Internal trigger The FG generates periodic trigger signals internally, at a designated trigger frequency. Each trigger produces another output of the burst signal. OUT ON/OFF Internal trigger signal Trigger cycle Waveform output
Gate (GATE) The FG maintains waveform output while the gate signal is in ENABLE state. You can input the gate signal from an external source, or you can enable the signal by holding down the TRIG key on the front panel. Output is always in full cycles (no fractional cycles), as illustrated below. OUT ON/OFF ENABLE
Gate signal
Less than 1 cycle
Waveform output
No fractional cycles
Direct Current (DC) The FG outputs a continuous, user-selected DC voltage. OUT ON/OFF Waveform output
1-4
0V IM 706111-01E
1.4 Selecting the Output Function (Output Waveform) The FG offers the following output functions.
1
Sine waveform
F u n c t i o n
The FG can produce sine waves with frequencies from 1µHz to 15MHz.
Square waveform The FG can produce square waves (duty cycle fixed at 50%) with frequencies from 1µHz to 15MHz.
Triangular waveform The FG can produce both triangular and ramp waves, where the “symmetry” setting determines the precise waveshape. Frequency can be set between 1µHz and 15MHz, although high-quality output is limited to frequencies between 1µHz and 200kHz.
Pulse waveform Duty cycle can be set between 0% and 100%. Frequency can be set between 1µHz and 15MHz, although high-quality output is limited to frequencies between 1µHz and 200kHz.
Arbitrary waveform (FG310/FG320) The FG310 and FG320 allow you define and store up to eight arbitrary waveforms. You can create the waveforms directly at the FG, or else define them externally and then load them in. The FG can produce these waveforms at any frequency between 1µHz and 15MHz, but high-quality output is limited to frequencies between 1µHz and 200kHz.
Square waveform
Triangular waveform
Sine waveform Pulse waveform
A1 to A8: Arbitrary waveforms
IM 706111-01E
1-5
1.5 Setting the Output Conditions (Frequency, Voltage, and Attenuation) Output frequency Frequency can be set between 1µMz and 15MHz for any waveform. For triangular waves, pulse waves, and arbitrary waveforms, however, high-quality output is limited to the range between 1µHz and 200kHz.
Output voltage You can set the output-level voltage in a variety of ways, as follows.
• By setting amplitude and offset
Amplitude Center 0V Offset voltage
• By setting high level and low level High level
0V Low level
• By selecting TTL level This selection automatically sets output to TTL voltage level (0V, 5V). TTL High level (5V)
TTL Low level (0V)
Phase • For 1-channel output Phase settings determine the beginning and ending phases for waveforms output under TRIGmode and GATE-mode operation. Phase settings have no affect during continuous or DC-mode output. Trigger signal Waveform output
: 0deg : 90deg
• For 2-channel output (FG220 and FG320 only) Phase setting applies to TRIG and GATE modes as described above. In addition, you can select phase difference between CH1 and CH2 outputs (effective during CONT, TRIG, and GATE modes). Trigger signal CH1 waveform output
Phase difference between channels
CH2 waveform output
• Multi-device output (See page 1-13.) Multiple FGs can be interconnected, and output can be synchronized. In this case, phase settings will determine the phase differences among these different devices.
Output attenuation Use this feature to reduce the output level to 1/10 or 1/100 the set level. The feature applies to output level as set by amplitude/offset or high/low parameters.
1-6
IM 706111-01E
1.6 Sweep Setup Sweep mode
1
The FG offers three different sweep modes, as follows. • Repeat: Repetitive sweep.
F u n c t i o n
• Single: Sweep once in response to trigger.
• Single & hold: Sweep once in response to trigger, but hold the final value until the next trigger.
Sweep type This setting determines the shape of the sweep. You can select from among four different sweep types.
• Linear
• Log (logarithmic sweep)
• Linear step
• Log step
• Arbitray (FG310/FG320 only up to eight arbitrary patterns)
Sweep item This setting selects the parameter (waveform attribute) to be swept. The following six items are available.
• Frequency
• Phase
• Amplitude
• Offset voltage
• Duty cycle: Available only with pulse waves
• Frequency & amplitude: For simultaneous frequency and amplitude sweeps
IM 706111-01E
1-7
1.6 Sweep Setup
Sweep conditions You can set the following sweep conditions.
• Start/stop or center/span values For a frequency sweep, for example, you can set the range either by selecting the start and end frequencies, or else by specifying the center frequency and the total frequency span. When you begin the sweep, the frequency will begin from the start value and gradually change (in accordance with the selected sweep type) until it reaches the stop value. If the start value is lower than the stop value, the frequency increases during the sweep; if higher, then the frequency decreases. Stop frequency
Start frequency
Center frequency:
Start freq. + Stop freq. 2
Frequency span: Stop freq. - stop freq.
• Sweep time This parameter sets the time used for a single sweep.
Sweep time
• Sweep ratio (available only if sweep type is “linear” or “log”) This setting selects the rising time of the sweep as a percentage of its total time. For an amplitude sweep at a ratio of 50%, for example, the sweep will begin at the start amplitude, will reach its stop value halfway through the sweep time, and will then move back to its start value — reaching the start value at the end of the sweep time. Note that a sweep executed at a 0% ratio will move in the opposite direction of the same sweep executed at a 100% ratio. Sweep ratio = 100%
Sweep ratio = 50%
Sweep time
Sweep time
• Number of steps Select number of steps for a linear-step or log-step sweep. Where Steps=3 STOP START Sweep time
Sweep hold You can use this feature to interrupt (hold) the sweep at its present value. You can then maintain continuous output at this level. You can also vary the sweep value manually (during hold) by rotating the rotary knob. Hold Continuous output at held value
Sweep monitor Use this feature to display the current value in real time on the screen. The feature allows you to determine the precise value at which a sweep hold became effective.
Start and stop markers The FG outputs sweep-marker signals through the CH1 MARKER OUT terminal. You can the marker values when setting up the sweep item. Start-marker frequency Stop-marker frequency
Marker signal
1-8
IM 706111-01E
1.7
Modulation Setup
Carrier
1
The selected output waveform (as described in Section 1.4 above) serves as the carrier for the modulated output. To set up the carrier, go to the MAIN OUTPUT SETUP screen and select parameters as follows.
• Carrier waveform You can select any output waveform type as the carrier: sine wave, square wave (duty = 50%), triangular wave (any symmetry), pulse wave (any duty cycle). If using the FG310 or FG320, you can also select any of eight arbitrary waveforms as the carrier.
• Carrier frequency You can set carrier frequency to any value between 1µHz and 15MHz. (But for high-quality pulse, triangular, or arbitrary waveform output, do not set frequency above 200kHz.)
• Carrier phase You can set phase sync between channels or among interconnected FGs. (See page 1-13.)
• Carrier output voltage Set by specifying either amplitude and offset, or else high level and low level.
Modulation type Select from among six modulation types, as follows.
• AM (Amplitude modulation)
• DSB-SC AM (double-sideband suppressed-carrier AM)
• FM (Frequency modulation)
• PM (Phase modulation)
• PWM (Pulse-width modulation): Available only if carrier is a pulse wave.
• Offset modulation
Modulator wave Select any of the following waveforms as the modulator. • Sine waveform
• Triangular waveform
• Pulse waveform (duty-cycle modulation)
• Arbitrary waveform (FG310/FG320 only; any one of eight arbitrary waveforms)
IM 706111-01E
1-9
F u n c t i o n
1.7
Modulation Setup
Modulation conditions • Modulation frequency Modulation frequency can be set from 1mHz to 50kHz.
• Other condition The other conditional setting varies according to the modulation type, as follows.
• If AM: Set the modulation depth. d A Carrier amplitude
Depth =
d × 100 A
(％ )
1 Modulator frequency
• If DSB-SC AM: No setting; modulation depth is fixed.
• If FM: Set the peak frequency deviation (peak difference between carrier’s frequency and instantaneous modulated frequency). Carrier frequency Frequency deviation
1 Modulated frequency
• If PM: Set the peak phase deviation.
• If PWM Set the peak duty-cycle deviation.
• If offset modulation: Set the peak offset-voltage deviation.
1-10
IM 706111-01E
1.8 Sequence Setup A sequence consists of up to 256 different steps, with each step implementing a different collection of output parameter values. All steps produce the same waveform type, but each step defines a separate collection of the following parameters: frequency, phase, amplitude, offset, duty, and marker. You advance through the steps by issuing trigger signals, with each trigger signal incrementing the step by 1. (But random jumping is also possible; see below.) You can set up a separate marker value for each step. The FG’s CH1 MARKER OUT terminal outputs the marker values in real time as the sequence proceeds; you can therefore use this output to detect step changes as they occur. Step 6 Step 2 Step 1
Sequence-marker setting
Trigger signal
Step 1
Step 2
Step 3
Step 4
Step 1
Output waveform
Amplitude change
Phase change
End of final step
Frequency, amplitude, offset change
0
Sequence-marker signal
1
0
1
0
The FG also supports an external sequence-control option that allows you to switch randomly among steps. Specifically, the option allows you to select each step by inputting an 8-bit digital signal corresponding to the step number. You can use this function to produce digital modulation waveforms (such as FSK and PSK), as illustrated below.
FSK (Frequency-Shift Keying) 1
0
0
1
0
Data values
Frequency change
Frequency change
PSK (Phase-Shift Keying) 1
0
0
1
0
Data values
Phase change
IM 706111-01E
Phase change
1-11
1 F u n c t i o n
1.9 1. 9 Cr Crea eati ting ng Arb Arbit itra rary ry Wav Wavef efor orms ms The FG allows you to define and load up to eight arbitrary waveforms. You can then use these as output waveforms, sweep patterns, carrier waves, or modulator waves. There are three ways you can define arbitrary waveforms, as follows. • Create the waveform externally, then load by floppy disk. You can create the data using a Yokogawa DL4000- or DL5000-series digital oscilloscope, an AG-series arbitrary waveform generator, or any of various other devices. DL4000-Series DL4000-Series Digital Oscilloscope
Save displayed data to floppy disk. Load the data into the FG.
Floppy disk
• At the FG, enter significant points (X,Y coordinates) along the waveform that
you want to create, then instruct the FG to connect the points either by linear, stepwise, or spline interpolation. You enter the points in the form of text data at the FG’s text-editor window.
Set the area (coordinate range).
Enter coordinates for each point. Select the interpolation method.
Linear
Step
Relaxed spline
Periodic spline
Generate points using a PC and a spreadsheet program (LOTUS 1-2-3) or other application, then transport by floppy disk or download directly to the FG via the GP-IB interface. Download by GP-IB interface
Create data using PC and application.
Save the data to disk. Load the data into the FG.
Floppy disk
Sweep markers and event markers You can incorporate an arbitrary pulse pattern into your arbitrary waveform. If you use the waveform as a sweep control, then the pattern defines a series of sweep markers that the FG outputs in real time (through the CH1 MARKER OUT terminal) as the sweep progresses. If you use the waveform for normal output and your system includes the external sweep-control option (see next page), then the pattern defines a series of (3-bit) event signals.
1-12
IM 706111-01E
1 .1 0
Signal I/O The rear panel of the FG provides a variety of input and output connectors. These connectors and their uses are described below.
1
• TRIG IN/GATE IN (Trigger/gate input) You use this terminal to input an external trigger signal or gate pulse during TRIG-mode or GATE-mode output.
• SWP HOLD IN (Sweep-hold input) Accepts an external sweep-hold control signal.
• SUM IN/VCA IN (Offset/amplitude control input) Use this terminal to apply an offset voltage or to control the amplitude of the output waveform. (Selection of external offset or amplitude control automatically overrides the waveform’s internal offset or amplitude setting).
• CH1 SYNC OUT (CH1 wave-sync output) This terminal outputs a TTL-level pulse in sync with the Channel 1 output. The signal can be used as a trigger when observing the output waveform at an oscilloscope. Sine wave
Square wave Triangular wave Ramp wave
Pulse wave
CH1 output waveform
Peak-to-peak center
CH1 SYNC OUT
• CH1 MARKER OUT This terminal outputs Channel-1 marker signals. During a CH1 sweep, the terminal outputs sweep-marker signals; during sequence operation, it outputs sequence-marker signals. The signals can be used as a trigger when observing the output waveform at an oscilloscope.
• CH1 SWEEP OUT (CH1 sweep/modulation output) The terminal outputs a signal representing the state of the channel-1 sweep or modulator signal. Sweep is represented by a linear signal that varies from –10V to +10V during each sweep cycle. Modulation is represented by an image of the modulator signal, converted such that offset is 0 and amplitude is 20Vpp. Sweep output
Modulated output
Output waveform Sweep time ＋ 10V
CH1 SWP OUT
10V
• OPER SYNC IN/OPER SYNC OUT (Synchronization) You use these terminals to synchronize output among multiple, interconnected FGs. OPER SYNC OUT
OPER SYNC IN
・・・
MASTER
SLAVE
SLAVE
SLAVE
Maximum of 8 FGs
External sweep control (option) • SWP CTRL IN (Analog sweep-control sweep-control input) Use this terminal to implement external control of sequence, sweep, or modulation.
• DIGITAL CTRL I/O (Digital control I/O) You can use this terminal to input an 8-bit digital signal for control of sequence output, sweep output, or modulation. The terminal can at the same be used to output 3-bit sequence or sweep markers, as well as arbitrary-waveform event markers. Note that the option makes it possible for you to set marker values between 0 and 7; without the option these values are limited to 0 and 1. IM 706111-01E
1-13
F u n c t i o n
1.11 Other Functions The FG offers a variety of supplementary functions, as follows.
• Two-channel phase synchronization When working with two-channel output (FG220 and FG320), you can select how the FG responds to a frequency change at either channel: it can either (a) resynchronize the channel phases, or (b) maintain continuous output. If you select continuous output, you can still forcibly resync at any time by the press of a button. •
Maintain phase sync.
•
Maintain continuous output.
CH1 output
CH1 output
CH2 output
CH2 output
Change in CH1 frequency
Change in CH1 frequency Change in CH2 frequency
Change in CH2 frequency
• Floppy-disk formatting (FG310/FG320 only) The FG can format a floppy disk into any of the following formats. 2HD: 1.2MB or 1.44MB MS-DOS format 2DD: 640KB or 720KB MS-DOS format
• Parameter autoload (FG310/FG320 only) You can have the FG automatically reload all data (parameters values, sequence data, and arbitrary waveform data) from floppy disk at time of power-on. Simply save your data to disk, then insert the disk into the drive before switching the power on.
• Simultaneous two-channel setting (FG220/FG320 only) This feature allows you to set amplitude, phase, offset, duty, and/or sweep-time settings for both channels simultaneously. Using this feature with frequency, for example, will allow you to change frequency settings while maintaining the channel-to-channel phase relationship.
• Channel-to-channel copy (FG220/FG320 only) This feature allows you to copy output settings from one channel into the other. Useful when you want to use similar settings for both channels.
• Initialization of the output settings This feature resets all output settings to their factory defaults.
• Contrast adjustment You can adjust the contrast of the LCD to suit the environment you’re working in.
• Beep sound ON/OFF You can set the FG’s beeper ON or OFF. If ON, the beeper will sound each time a soft button is pressed, and whenever an error occurs.
• Calendar-clock function (FG310/FG320 only) The FG310 and FG320 include a built-in calendar clock. Date and time are set at the factory, but can be user-adjusted. When you save data to floppy disk, the disk will record the date/time of the save.
• Self-testing The FG includes self-test programs for memory, circuit boards, key operation, display, and other functions. Use these tests to check the system’s operation, and to identify problems before calling for service.
1-14
IM 706111-01E
2.1 Front Panel Model FG320 CH key Selects channel for parameter setup.
WAVE key Displays MAIN OUTPUT SETUP screen.
2
SWEEP key Displays SWEEP SETUP screen.
Rotary knob
LCD (liquid-crystal display)
Numeric input, file select, etc.
Touch-screen
15MHz
SYNTHESIZED
FUNCTION
GENERATOR
CH
WAVE
Arrow keys SWEEP
MOD
7
8
9
4
5
6
Move cursor from digit to digit. Left arrow acts as backspace.
Keypad 1
UTIL
2
3
Numeric input
0
TRIG
OUTPUT
OUTPUT
POWER CH1
CH2
10V/OPEN Zo=50 Ω
MOD key Calls MODULATION SETUP screen.
UTIL key
Floppy-disk drive Use floppy disks to save and load parameters.
10V/OPEN Zo=50 Ω
CH2 output indicator Lights up if CH2 output is ON.
CH2 waveform output terminal Connects to CH2 waveform output cable
Calls UTILITY menu.
CH1 output indicator Lights up if CH1 output is ON.
TRIG key Applies manual trigger or gate.
CH1 waveform output terminal Connects to CH1 waveform output cable
Power switch
Note Numeric values entered with the keypad are not registered until you press one of the dimensional-unit buttons displayed on the LCD.
IM 706111-01E
2-1
N a m e a n d U s e o f E a c h P a r t
2.2 Rear Panel (Shown with /R1 external sweep-control option installed) Trigger/gate input Inputs trigger or gate. (Page 9-1)
Sweep-hold input Inputs sweep-hold signal. (Page 9-3)
Sync input Use to sync multiple FGs. (Page 9-10)
CH1-synchronous output Outputs signal in sync with CH1 waveform. (Page 9-6)
CH1 marker output Outputs CH1 marker signals. (Page 9-7)
Analog sweep-control input Inputs analog sweep-control signal. (Page 9-12)
Digital-control I/O terminal
Sync output
Input/output of digital control information. (Page 9-14)
Used to sync multiple FGs. (Page 9-10)
OPER SYNC IN
TRIG IN/ GATE IN
SWP HOLD IN
DIGITAL CTRL I/O
OPER SYNC OUT
CH1 SYNC OUT
CH1 MARKER OUT
CH1 SWP OUT
SUM IN/ VCA IN
SWP CTRL IN
CIRCUIT BREAKER 250V AC 3A 3 A M P
TTL
TTL
G P- IB
TTL
TTL
10V
10V
10V
Circuit breaker For reset method (Page 11-14)
I EE E4 88
Power connector (Page 3-4) 100- 24 0V AC 50 - 60Hz 125VA MAX
WARNING TO AVOID ELECTRIC SHOCK, PROTECTIVE GROUNDING CONDUCTOR IN THE
MODEL
POWER CORD MUST BE CONNECTED TO GROUND.
Nameplate
SUFFIX
DO NOT REMOVE COVERS. REFER SERVICING TO QUALIFIED PERSONNEL ONLY.
NO. Made in Japan
Offset/amplitude input
Warning plate
Inputs an externally supplied offset or amplitude control signal. For information about offset input (Page 9-4) For information about amplitude input (Page 9-5)
For safety-related information (Page 4) For usage precautions (Page 3-1)
Exhaust vent CH1 sweep/modulation output (Page 9-9)
GP-IB connector For full information about remote operation, see the GP-IB Interface User's Manual (IM706111-12E).
2-2
IM 706111-01E
2.3 Screen Displays MAIN OUTPUT SETUP screen (Press [WAVE] key to display.) See Chapter 4. Press to call the output MODE window. Use to select the output mode: continuous, triggered, gated, or DC.
Press to display the FUNCTION window. Use to select the waveform type for the output or carrier wave.
2
Press to display the OUTPUT window. Use to select attenuation level, TTL-level output, phasesynched output.
Current setting Warning indicator -> page 11-2 If indicator appears, press {ERROR LOG} button to read warning message.
Currently selected channel Rotary knob mark
Unit button
Mark appears to indicate that you can use the rotary knob to input a value.
Selects dimensional unit; registers keypad-entered value.
Press to set the output frequency.
Press to set the phase
Press to set the output amplitude.
Press to set the offset voltage. Or press twice to change button to {LOW LEVEL} button.
Or press twice to change button to {HIGH LEVEL} button.
Set value Press to set symmetry for triangular wave. If output mode is PULSE, then {DUTY} button will appear instead, for selection of duty cycle.
SWEEP SETUP screen (Press [SWEEP] key to display.) See Chapter 5. Press to call the SWEEP MODE window. Use to select the sweep mode: repetitive, single, or single & hold.
Press to display the SWEEP TYPE window. Use to select sweep type: linear, log, linear step, log step, or arbitrary. ("Arbitrary" available on FG310/FG320 only.)
Press to display the SWEEP ITEM window. Use to select the sweep object: frequency, phase, amplitude, offset voltage, duty cycle (if pulse wave), or frequency & amplitude.
Current setting
Currently selected channel Unit button Selects dimensional unit; registers keypad-entered value.
Press to set the sweep start value.
Press to set sweep stop value. Or press twice to change button to {SPAN FREQ} button.
Or press twice to change button to {CENTER FREQ) button.
Press to set sweep stop marker.
Press to set the sweep start marker.
Or press twice to change button to {SPAN MARKER} button.
Or press twice to change button to {CENTER MARKER} button.
Set sweep ON or OFF.
Press to hold or unhold the sweep.
Press to set the sweep ratio. If sweep type is linear-step or log-step, the {STEP} button will appear instead.
Press to display running value of sweep object. Press to set the sweep time. IM 706111-01E
2-3
N a m e a n d U s e o f E a c h P a r t
2.3
Screen Displays
MODULATION SETUP screen (Press [MOD] key to display.) See Chapter 6. Press to display the MODULATION TYPE window. Use to select type and offset. Available types: AM, DSB-SC AM, FM, PM, and PWM (for pulse-wave carrier).
Press to display the MODULATION FUNCTION window. Current setting
Currently selected channel Press to set the modulation frequency.
Unit button Selects dimensional unit; registers keypad-entered value.
Press to set modulation depth.
Press to set carrier's amplitude.
(If modulation type is FM, PM, or PWM, then {DEVIATION} button appears instead. DBC-SC AM type does not take a setting.)
Sets carrier's amplitude. (This parameter is also accessible at the MAIN OUTPUT SETUP screen.)
Set modulation ON or OFF.
UTILITY Menu (Press [UTIL] key to display.) See Chapters 7, 8, and 10. Call STORE/RECALL window. (Store/recall output settings.) Call the SYNCHRO window. FG's current status (Also appears on other screens.) If sync master: MSTR If sync slave: SLAV If trigger/gate input: TRIG
Call INITIALIZE window. (Reinitialize settings.) Call CONFIGURATION window. (Set screen contrast, date/time, button beep ON/OFF, dual-channel setup, other configuration parameters.)
Call SELF-TEST window. (See page 11-4.)
Call COPY window. (Copy settings from channel to channel.) Call TRIGGER SLOPE window. (Select trigger/gate polarity.) Call R1 OPTION CONTROL setup window. Call FLOPPY window. (Format a disk; set autoload; save or load.) Call ERROR LOG window. (View list of warnings; see page 11-2.) Call SEQUENCE setup window. Call SUM/VCA window. (Select externally supplied offset or amplitude control.) Call ARB (arbitrary-waveform creation) window.
2-4
IM 706111-01E
3.1 Usage Precautions Safety precautions • Be sure to read through the safety precautions given on page 4 of this manual before beginning to use your function generator. • Never remove the FG’s casing. The unit contains extremely hazardous high-voltage components. Consult your nearest Yokogawa representative (see listing on back cover) if your unit requires maintenance or adjustment. • If the FG emits smoke or unusual odor or otherwise behaves abnormally, immediately set the power switch OFF and unplug the power cord from the outlet. Then consult your nearest
3
Yokogawa representative for assistance. • If the cooling fan stops during operation, the FG will display the error message shown below. When you see this message, switch off the power immediately! The fan (on the rear panel) may be jammed; check for and remove any obstructions, then restart. If the error condition recurs, switch off the power and contact your nearest Yokogawa representative for service.
• Never rest any objects on the power cord. Keep the cord clear of hot objects at all times. When unplugging the power cord, pull on the plug area — never pull on the cord itself. If the cord becomes damaged, contact your dealer and obtain a replacement. (Cite the part number indicated on page 2 of this manual.)
Handling precautions • Never place liquid-filled containers or other potentially damaging objects on top of the FG. • Avoid subjecting the FG to vibration and strong impacts, as these can cause hardware damage. (Be especially careful if your FG includes an internal floppy drive.) Also note that any impact to terminals or connector cords may add electrical noise to the output signal. • Always keep terminals clear of electrically charged objects. Electrostatic at the terminals may cause internal damage. • If you do not plan to use the FG for an extended period, unplug the power cord. • If you need to lift and move the FG, first disconnect the power cord and connector cables. The lift and carry by the handle, as shown. (The FG weighs approximately 5kg.)
• Never touch the LCD (touch screen) with pointed objects. Contact with sharp objects may cause damage. • Never clean plastic parts with benzene or other such solvents, as these may cause discoloration. To clean the case or panel, wipe lightly with a soft dry cloth. If the unit is particularly dirty, wipe first with a cloth wetted with a dilute neutral cleaning agent, then wipe dry with another cloth.
IM 706111-01E
3-1
B e f o r e S t a r t i n g O b s e r v a t i o n a n d M e a s u r e m e n t o f W a v e f o r m s
3.2 Installation
Warning • In general, you should never run the FG in upright position, with the fan vent facing downward. If the FG malfunctions while in this position, heat escaping from the vent may cause a fire. If you really need to operate the unit in this position, place a metal plate or flame-retardant barrier (grade UL94-1 or higher) underneath it.
Location Be sure to install the FG in a location that meets the environmental conditions described below. • Ambient temperature and humidity Ambient temperature and humidity during operation should be within the following limits. • Temperature: 5°C to 40°C For high output precision: 23±2°C • Humidity: 20% to 80% RH; no condensation For high output precision: 50±10% RH Note Condensation may occur when the FG is moved from a cold location to a warm one, or when there is a rapid change in ambient temperature. If liquid condenses on the FG, allow the unit to stand at least one hour under stable ambient conditions before using.
• Ventilation The FG may overheat if ventilation is blocked. Always position it so as to leave adequate clearance for the fan vent at the back, and never obstruct the ventilating holes located at the top and bottom.
At least 10cm
3-2
IM 706111-01E
3.2
Installation
• Other conditions Install the FG on a stable surface, in a location that is: • Away from direct sunlight and other heat sources. • Away from oily smoke, steam, dust, corrosive gas, and other such contaminants. • Away from strong magnetic fields. • Away from high-voltage equipment and power lines. • Away from mechanical vibrations.
Angle You can set the unit horizontally, or you can tilt it slightly backward by lowering its support stand, as illustrated below.
3
To install in the tilted position, pull the FG’s support stand forward until it locks into place at right angles with the bottom panel. If the surface is slippery, you should also attach rear-leg rubber (supplied accessory) mounts to FG’s rear legs. To retract the stand, push it inwards at both end while moving it back to its original position.
Rack mounting It is possible to mount the FG into an optional rack-mount kit. For mounting instructions, refer to the user’s manual supplied with the kit. The following rack mount kits are available.
IM 706111-01E
Name
Model
Specification
Rack Mount Kit Rack Mount Kit Rack Mount Kit Rack Mount Kit
751533-E3 751534-E3 751533-J3 751534-J3
EIA Single Mount EIA Double Mount JIS Single Mount JIS Double Mount
3-3
B e f o r e S t a r t i n g O b s e r v a t i o n a n d M e a s u r e m e n t o f W a v e f o r m s
3.3 3. 3 Conn Connec ecti ting ng the the Pow Power er Cord Cord Before connecting.... Read the warnings below before connecting the power cord. Failure to follow these precautions may result in electrical shock or device damage.
Warnings • Make certain that the power voltage of your outlet outlet matches the FG’s rated power voltage. • Be sure sure that that the the FG power power switch switch is OFF. • Be sure that your power cord has been supplied supplied by Yokogawa specifically specifically for use with your FG200/FG300-series FG200/FG300-series function generator. Use of an inappropriate cord may present a shock or fire hazard. • Always Always plug the cord cord into a standar standard d 3-pin grounde grounded d outlet. outlet. • Never use ungrou ungrounded nded extens extension ion cords cords..
Connecting 1. Make certain that the power switch located on the front panel is is turned OFF. 2. Plug the supplied power cord into the power connector on the FG’s rear panel. 3. Plug the other end of the power cord into a 3-pin grounded outlet that meets the conditions listed below. Rated power voltage:
100 to 240 VAC
Permissible voltage range:
90 to 26 2 64 VAC
Rated power frequency:
50 to 60 Hz
Permis Permissib sible le powerpower-fre frequen quency cy range: range:
48 to 63 Hz
Maximum power consumption:
125VA
3-pin outlet
Supplied power cord
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IM 706111-01E
3.4 Power ON/OFF Before switching ON: • Check that the the FG is installed installed properly, properly, in accordance accordance with the informati information on given in Section Section 3.2 above. • Check that the the power cord in properly properly connected connected to an appropriate appropriate power power outlet, outlet, as described described in Section 3.3.
Power switch The power switch is at the lower left of the front panel. To switch power on, press once; to switch power off, press again.
3 OFF
ON
Power-ON initialization When you switch the power on, the FG executes the following initialization checks: • ROM ROM che check cksu sum m tes testt • DRAM DRAM chec checks ksum um test test • Cali Calibr brat atio ion n che check ck Panel keys remain disabled during these checks. When initialization is completed, the FG displays the MAIN OUTPUT SETUP screen and enables the panel. Note • If the FG fails to start up as described, turn the power switch back to OFF and proceed as follows. • Check that the the power cord is firmly firmly and properly properly connected. connected. • Check that that your power power outlet is providin providing g the required required voltage. voltage. (See page 3-4.) 3-4.) • Check that the circuit circuit breaker is correctly correctly positioned. positioned. (See (See page 11-14). If the above checks do not resolve the problem, contact your nearest Yokogawa representative (see listing on back cover) for service.
For best precision... When you need high-precision waveform output, allow the FG at least 30 minutes to warm up following power-on. Keep ambient temperature at 23±2°C, and ambient humidity at 50±10%RH (see page 3-2).
Power-OFF operation The FG retains the last active settings while power is off, and restores them at next power-on. But all arbitrary waveform data and all sequence data are lost from memory at power-OFF. If your model is equipped with a floppy drive (models FG310 and FD320 only), you should save any important data to floppy disk before switching the power off. Note A built-in lithium battery provides the power required to maintain settings data during power-off. The battery has an expected lifetime of about 10 years (at 23°C ambient temperature). As the battery approaches its end-of-life, the FG may begin to display incorrect dates or times, or may fail to save or recall settings correctly. If you notice any such problem, execute a self-test as described on page 11-4. If the test returns the LOW BATTERY warning, it is time to replace the battery. Replacement must be done by a qualified service engineer: contact your nearest Yokogawa representative (see listing on back cover) for service.
IM 706111-01E
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B e f o r e S t a r t i n g O b s e r v a t i o n a n d M e a s u r e m e n t o f W a v e f o r m s
3.5 Waveform Outputs Location The waveform output(s) are at the lower right of the front panel. Connection cables must be equipped with BNC connectors.
OUTPUT connectors on the FG220 and FG320 OUTPUT
CH1
OUTPUT
CH2
10V/OPEN Zo=50 Ω Ω
10V/OPEN Zo=50 Ω Ω
Output specifications Connector type:
BNC
Numbe Numberr of con connec necto tors rs::
1 on FG2 FG210 10/F /FG31 G310; 0; 2 on on FG220 FG220/F /FG3 G320 20
Maximum output voltage:
± 10V
Output impedance:
50 ohms±1% with output ON; OPEN when output is OFF.
Ground:
Connected to case ground
(when OPEN)
CAUTION • Never short-circuit short-circuit or apply voltage to the output output terminals, terminals, as this this may result result in hardware damage.
Note Although certain settings will produce output voltages greater than ±10V, the output waveforms produced at these voltages may fail to accord with the waveform settings.
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IM 706111-01E
4.1 Setting the Output Mode Procedure 3
1
Select the channel.
2
Call the MAIN OUTPUT SETUP screen.
Call the MODE window.
CH
WAVE
SWEEP
MOD
4
UTIL
C o m m o n O p e r a t i o n s
TRIG
4
Select the output mode.
Explanation Select any one of the following four output modes.
CONT (Continuous) The FG outputs the waveform continuously while OUTPUT is ON.
TRIG (Trigger) The FG outputs a burst signal consisting of a specified number of cycles (the burst count) upon receiving a trigger signal. Output then stops until the next trigger is received. You can issue the Trigger signal Waveform output
trigger by pressing [TRIG] key, by setting up an internal periodic trigger, or by inputting a trigger signal from an external source. Refer to Section 4.7 (page 4-9) for details about how to set up the trigger source, the burst count, and the periodic trigger. Refer to Section 9.1 (page 9-1) for details about trigger input and trigger slope selection.
GATE The FG generates waveform output only while the [TRIG] key is held down or while the gate input Gate signal Waveform output
is in ENABLE state. Output stops when you release the [TRIG] key or when the gate input returns to DISABLE state. Refer to Section 9.1 (page 9-1) for details about trigger input and gate polarity selection.
DC (Direct Current) The FG outputs a continuous DC signal while OUTPUT is ON. The signal continues until you switch off the output or change the output mode. Refer to Section 4.4 (page 4-4) for details on how to set the DC voltage level. Note • When you change the output mode, the FG automatically switches off any currently executing sweep, modulated, or sequenced output. When you switch to sweep, modulation, or sequence output, the FG automatically resets the mode to CONT. • When you switch to sweep or modulated output, the MAIN OUTPUT SETUP screen displays the message XXX SWEEPING! or XXX MODULATING! (where XXX indicates the sweep item or modulation type, respectively). When you switch to sequence output, the screen displays the message SEQUENCE EXECUTING! • If you are using trigger or gate signals to produce square-wave output, the initial value is unstable.
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4-1
4.2 Selecting the Output Waveform Procedure 3 Call the FUNCTION window.
1 Select the channel setting.
CH
2 Call the MAIN OUTPUT
WAVE
SETUP screen. SWEEP
MOD
UTIL
TRIG
4 Select the output waveform.
Explanation
Selecting the output waveform Select any one of the following waveform types. •
Sine wave
•
Square wave (duty cycle = 50%)
•
Triangular wave (or ramp wave) Then set the symmetry to between 0.00% and 100.00%, as described below.
Pulse wave
•
Then set the duty cycle to between 0.00% and 100.00%, as described below. •
~
Arbitrary waveform A1 to A8 (available on FG310/FG320 only) Refer to Chapter 8 for details about how to create arbitrary waveforms.
Setting the symmetry (if triangular wave) or duty cycle (if pulse) If the selected waveform type is triangular or pulse, the MAIN OUTPUT SETUP screen displays the {SYMMETRY} or {DUTY} button. To set the value, press the button and then do either of the following. • Input the desired value at the keypad, then press [%]. • Move the cursor to the next digit you want to set, then turn the rotary knob to select the value. Repeat until all digits are set. (If the display does not show all settable digits, you can display the remaining digits by moving the cursor to the rightmost column, then pressing [>] key once again.) 2 Turn the rotary knob to change the value.
1 Move the cursor to the digit you want to set.
Note • You cannot select a waveform (the FUNCTION window will not appear) if the output mode is DC. • If amplitude has been set in Vrms, the setting automatically switches to Vpp when you change the waveform. • The DUTY sweep item and the PWM modulation type are available only with pulse waveforms. If you switch from pulse waveform to some other waveform, these settings will automatically reset to FREQ and AM, respectively. • The FG may in some cases fail to output a pulse waveform if the following condition holds: 1/(outputcycle) × (duty-cycle-setting) < 25ns.
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4.3 Setting the Output Frequency Procedure 4 Input the numerical value at the keypad.
1 Select the channel.
CH
WAVE
2 Call the MAIN OUTPUT
SETUP screen. SWEEP
3 Select frequency input.
5 Select the
frequency unit.
MOD
UTIL
4
TRIG
Explanation Setting Range Frequency can be set to any value between 1µHZ and 15MHz, regardless of the waveform type. For precise waveform output, however, the frequency setting should not exceed 200kHz (except that this restriction does not apply to sine and 50%-duty-cycle square waves.)
Unit and Resolution You can select from four units: mHz, Hz, kHz, or MHz. The available resolution varies according to the selection, as shown below. But note that the maximum length of the numerical setting is nine digits, regardless of the selected unit. Setting
Units
Resolution
mHz Hz kHz MHz
0.001mHz 0.000001Hz 0.00000001kHz 0.00000001MHz
(1µHz) (1µHz) (10µHz) (10mHz)
How to Set the Output Frequency You can set the output frequency in either of two ways. 1. Input the numerical frequency value at the keypad. (You can use the [<] key as a backspace.) Then press the appropriate unit button ({MHz}, {kHz}, {Hz}, or {mHz}. 2. Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to set the value (see diagram below). Repeat until all digits are set. If necessary, change the frequency unit by pressing one of the displayed unit buttons. (If the display does not show all available digits, you can produce the remaining digits by moving the cursor to the rightmost column, then pressing [>] key once again.) 2 Turn the rotary knob to change the value.
Unit button 1 Move the cursor to the digit you want to set.
Note • You can set the FG to respond in one of two ways to a frequency change made during two-channel output: it will either (1) briefly interrupt the output to bring the phases together, or (2) maintain continuous output over both channels. Refer to Section 10.1 (page 10-1) for information. • For details on how to set the output frequency of both channels at the same time, see Section 10.5 (page 10-7) IM 706111-01E
4-3
C o m m o n O p e r a t i o n s
4.4 Setting the Output Voltage Procedure To set by amplitude and offset voltage: 4 Input the numerical value at the keypad.
1 Select the channel. 2 Call the MAIN OUTPUT
CH
WAVE
SETUP screen SWEEP
5 Select the unit.
3 Select amplitude input. MOD
UTIL
TRIG
3 Select offset-voltage input.
To set by high and low levels: 4 Input the numerical value at the keypad
1 Select the channel
2 Call the MAIN OUTPUT
CH
WAVE
SETUP screen.
5 Select the unit. SWEEP
3 Select high-level input. 3 Select low-level
MOD
input. UTIL
TRIG
To set equal to the TTL level:
1 Select the channel.
CH
3 Call the OUTPUT
window. 2 Call the MAIN OUTPUT
WAVE
SETUP screen. SWEEP
MOD
UTIL
TRIG
4 Set to TTL level.
4-4
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4.4
Setting the Output Voltage
To set the DC level for DC signal output: 3 Set the output mode to DC 4 Input the numerical value at the keypad.
1 Select the channel.
CH
WAVE
2 Call the MAIN OUTPUT
SETUP screen.
5 Select the unit. SWEEP
MOD
UTIL
4
TRIG
C o m m o n O p e r a t i o n s
Explanation AMPLITUDE: Units, Ranges, and Resolutions Setting the amplitude value to a negative number inverts the amplitude direction. Unit
Settable Range
Vpp mVpp Vrms mVrms
± ± ± ±
Resolution
20Vpp 20000mVpp 7.071Vrms* 7071mVrms*
1mVpp 1mVpp 1mVrms 1mVrms
* Indicates the range for sine-wave output. The range for square and pulse waves is ± 10Vrms; the range for triangular waves is ± 5.774Vrms. The Vrms and mVrms units cannot be used with arbitrary waveforms. Vrms and mVrms are also unavailable if you are setting amplitude for both channels at the same time (see page 10-7).
OFFSET: Units, Ranges, and Resolutions Unit
Settable Range
Resolution
V mV
± 10V ± 10000mV
1mV 1mV
HIGH/LOW LEVELS: Units, Ranges, and Resolutions Setting the high level lower than the low level inverts the amplitude direction. If you attempt to set a level such that the difference between the high and low settings is greater than 20V, the FG adjusts the value such that the difference becomes 20V. Unit
Settable Range
Resolution
V mV
± 20V ± 20000mV
1mV 1mV
TTL-Level Setting Setting the amplitude to the TTL level automatically selects the following values. Amplitude: 5.000Vpp, Offset: 2.500V High level: 5.000V, Low level: 0.000V
DC OUTPUT LEVEL: Units, Ranges, and Resolutions Units
Settable Range
Resolution
V mV
± 10V ± 10000mV
1mV 1mV
(Continues on next page.)
IM 706111-01E
4-5
4.4
Setting the Output Voltage Setting the output voltage You can set the output voltage in either of two ways. 1. Input the numerical value at the keypad. (You can use the [<] key as a backspace.) The press the appropriate unit button. 2. Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to set the value (see diagram below). Repeat until all digits are set. If necessary, change the frequency unit by pressing one of the displayed unit buttons. (If the display does not show all available digits, you can produce the remaining digits by moving the cursor to the rightmost column, then pressing [>] key once again.) 2 Turn the rotary knob to change the value.
Unit button
1 Move the cursor to the digit you want to set.
Note • The amplitude/offset settings are linked to the high/low-level settings. Changing a value in either pair automatically generates a corresponding change in the other pair. • If you attempt to set a value higher than the legal maximum or lower than the legal minimum, the value is automatically adjusted to the legal maximum or minimum, respectively. • The output-voltage setting represents the output voltage produced when the output attenuator is at “1/1” and the impedance is HIGH. • Where RMS is used in specifying/describing the amplitude of a waveform with an offset, the RMS setting denotes the RMS value of the waveform without the offset. • For pulses, as with sine waves, the midpoint between the high and low levels is equal to the average of these levels. This means that the RMS value of a pulse wave is independent of the wave’s duty cycle. • If you set the amplitude using an RMS unit, the unit will automatically switch to Vpp when you change the waveform. • Refer to Section 10.5 (page 10-7) for details about how to set the amplitude and the offset voltage for both channels at the same time. • Certain combinations of amplitude and offset, or of SUM IN (offset in) and VCA IN (amplitude control) inputs, will cause the output voltage to exceed ±10V. The FG may fail to output an accurate waveform when the voltage exceeds this level.
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4.5 Setting the Phase Procedure 4 Input the phase value at the keypad.
1 Select the channel.
CH
WAVE
2 Call the MAIN OUTPUT
5 Press to set the
SETUP screen
phase. SWEEP
3 Select phase
input. MOD
UTIL
4 C o m m o n O p e r a t i o n s
TRIG
Explanation Range and Resolution Range:
–10,000.00 deg to + 10,000.00 deg
Resolution: 0.01 deg
How the Phase Setting is Used • If single-channel output: The setting determines the start/stop phase for triggered and gated output. • If two-channel output: The setting determines the start/stop phase for triggered and gated output, and also the channelto-channel phase difference for continuous, triggered, and gated output.
How to Set the Phase You can set the phase in either of two ways. 1. Input the phase value at the keypad. (You can use the [<] key as a backspace.) Then press {DEG} button. 2. Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to set the value (see diagram below). Repeat until all digits are set. (If the display does not show all available digits, you can produce the remaining digits by moving the cursor to the rightmost column, then pressing [>] key.) 2 Turn the rotary knob to change the value.
1 Move the cursor to the digit you want to set.
Syncrhonizing the phase of both channels To automatically synchronize the phase for both channels (FG220/FG320 only), select {SYNCHRO} from the UTILITY menu, then set CHANNEL SYNC to “ON”. Note, however, that waveform discontinuities will then occur whenever either of the waveform frequencies is changed. An alternative is to leave CHANNEL SYNCH set “OFF” and press the {PHASE SYNC} button (in the OUTPUT window) whenever you want to resynchronize the phase. Refer to Section 10.1 (page 10-1) for details. Note • If you attempt to set a value higher than the legal maximum or lower than the legal minimum, the FG automatically adjusts the value to the legal maximum or minimum, respectively. • Refer to Section 10.5 (page 10-7) for details on how to set the phase for both channels at the same time.
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4-7
4.6 Setting the Output Attenuator; Turning OFF the Output Procedure 4 Select the output attenuation.
1 Select the channel.
3 Call the OUTPUT
CH
window. 2 Call the MAIN OUTPUT
WAVE
SETUP screen. SWEEP
MOD
UTIL
TRIG
4 Turn output OFF.
Explanation Setting the Output Attenuator To select an output voltage of 1/10 or 1/100 the voltage setting, press {1/10} or {1/100}, respectively. To select unattenuated output, press {1/1}. If you select {TTL LEVEL} output, the unit automatically selects 1/1.
Turning OFF the output Press {OFF} button to switch off the waveform output from the selected channel. You can switch output back on by pressing {TTL LEVEL} or any one of the displayed attenuator buttons.
To Force Output Off at Power On and Output Initialization The following procedure will ensure that output is forced off (1) at time of power-on, (2) whenever the FG reinitializes the output settings, and (3) whenever the FG loads settings from internal memory. 1. Press [UTIL] key to call the UTILITY MENU. 2. Press {CONFIG} button to call the CONFIGURATION window. 3. Press {InitOUT} button so that the value becomes OFF.
Set to OFF
Note When working with a low-voltage signal, you may want to set the attenuator to 1/10 or 1/100 to get a good signal/noise ratio.
4-8
IM 706111-01E
4.7 Setting the Trigger Source and Burst Count Procedure 3 Set the output mode to TRIG.
(See page 4-1 for instructions.)
1 Select the channel.
CH
2 Call the MAIN OUTPUT
5 Input the value
WAVE
for the burst count or trigger frequency.
SETUP screen SWEEP
MOD
4 Press to enable
burst-count input.
UTIL
Press to generate manual trigger.
4
TRIG
C o m m o n O p e r a t i o n s
Press to select internal or external trigger. 4 Press to enable trigger-frequency input.
Explanation
In order to set the burst count and trigger settings, you must first set the output mode to TRIG. See page 4-1 for instructions.
BURST (Burst count) Settable range is from 1 to 65,535 cycles.
TRIG INT/EXT (Trigger-type selection) Use the {TRIG INT/EXT} button to select between internal and external trigger. If the setting is “EXT”, the FG recognizes external triggers only. You can generate these triggers manually (by pressing [TRIG] key), or by inputting a trigger signal to the TRIG terminal. See Section 9.1 for information about connecting to the terminal and selecting the trigger slope. If the setting is “INT”, the FG generates period triggers internally, at the specified trigger frequency (see immediately below).
TRIG FREQ Sets the trigger frequency for the internal trigger. The settable range is from 1mHz to 50,000kHz; resolution is 1mHz.
How to Set the Burst Count and Trigger Frequency You can these values in either of two ways. 1. Input the numerical value at the keypad. (You can use the [<] key as a backspace.) Then press the {cycles} buttons (if setting the burst count), or the appropriate frequency-unit botton (if setting the trigger frequency). 2. Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to set the value (see diagram below). Repeat until all digits are set. If necessary, change the unit by pressing one of the displayed unit buttons. (If the display does not show all settable digits, you can produce the remaining digits by moving the cursor to the rightmost column, then pressing [>] key.) 2 Turn the rotary knob to change the value.
Unit button 1 Move the cursor to the digit you want to set.
Note • If you attempt to set the burst count to a value above 65,535, the FG automatically adjusts the setting to 65,535. • If you want to generate triggers by GP-IB command, select external triggering. • The FG will not respond to a trigger (either internal or external) while burst output is in progress. Triggering becomes reenabled once the FG has output the full burst count. • The internal trigger has 1.6µs jitter. IM 706111-01E
4-9
5.1 Setting the Sweep Mode Procedure 3
1
Select the channel.
Call the SWEEP MODE window.
CH
WAVE
2
Call the SWEEP SETUP screen.
SWEEP
MOD
UTIL
TRIG
5 4
S e t t i n g t h e S w e e p O u t p u t
Select the sweep mode.
Explanation Select any of the following four sweep modes.
REPEAT The sweep executes repetitively.
SINGLE The sweep executes once each time a trigger signal is received. You can issue the trigger manually by pressing [TRIG] key, or externally through the TRIG IN terminal or by GP-IB command. Trigger signal
SINGLE & HOLD The waveform begins output with no sweep. The first trigger signal causes a single sweep; when the sweep reaches its end, the waveform holds continuous output at the sweep’s final value. The next trigger signal then returns the waveform to its initial state. The process can then be repeated, with every other trigger generating a new sweep. Trigger signal
Waveform holds the sweep-end state.
Waveform returns to initial state.
Note • If the sweep-time setting is 26.1ms or less during SINGLE & HOLD sweeping, the sweep will not reach its final value. The FG holds the final value (hold value) to within 0.2% of the set value. • Use the MAIN OUTPUT SETUP screen to select and set up all parameters (other than sweep parameters) for the waveform to be swept. Refer to Chapter 4 for details. • Refer to Section 5.5 (page 5-6) for details on how to turn sweep ON and OFF. IM 706111-01E
5-1
5.2 Setting the Sweep Type Procedure 3 Call the SWEEP TYPE window.
1 Select the channel.
CH
WAVE
2 Call the SWEEP
SWEEP
SETUP screen. MOD
UTIL
TRIG
4 Select the sweep type.
Explanation Selecting the sweep type You can select any of the following sweep types.
• LINEAR A linear sweep. You can set the sweep ratio to any value between 0% and 100% in increments of 0.01%. (See page 1-8 for an explanation of sweep ratio.) The default ratio is 100%.
• LOG A logarithmic sweep. Again, you can set the sweep ratio to any value between 0% and 100% in increments of 0.01%. (See page 1-8.) The default ratio is 100%.
• LINEAR STEP Linear stepwise sweep. You can set the number of steps to any integer between 2 and 100. The default is 10.
• LOG STEP Logarithmic stepwise sweep. Again, you can set the number of steps to any integer between 2 and 100. The default is 10.
•
~
Arbitrary Waveform A1 to A8 (FG310/FG320 only)
The FG300 series allows you to select an arbitrary waveform as the sweep pattern. If the sweep item is other than FREQ & AMPLITUDE, you can select any arbitrary waveform (A1 to A8). If the sweep item is FREQ & AMPLITUDE, then A1 and A2 are automatically used as the frequency and amplitude sweeps, respectively. For instructions about how to create arbitrary waveforms, see Chapter 8.
Setting the sweep ratio or number of steps If sweep type is LINEAR or LOG, the SWEEP SETUP screen displays the {SWEEP RATIO} button. If sweep type is LINEAR STEP or LOG STEP, the screen displays the {STEP} button. To set the value, press the appropriate button and then do either of the following. • Input the numerical value at the keypad, then press the unit button. • Use the arrow keys to move the cursor to the next digit you want to set, then turn the rotary knob to set the value. Repeat until all digits are set. Note Refer to Appendix 2 for important information regarding the use of logarithmic sweeps.
5-2
IM 706111-01E
5.3 Setting the Sweep Item Procedure 3 Call the SWEEP ITEM window.
1 Select the channel.
CH
WAVE
2 Call the SWEEP
SWEEP
SETUP screen. MOD
UTIL
TRIG
5 4 Select the sweep item.
S e t t i n g t h e S w e e p O u t p u t
Explanation Selecting the sweep item Select any of the following six sweep items.
• FREQ (Frequency) Sweeps the waveform’s frequency.
• PHASE Sweeps the waveform’s phase.
• AMPL (Amplitude) Sweeps the waveform’s amplitude.
• OFFSET Sweeps the waveform’s offset voltage.
• DUTY Sweeps the waveform’s duty cycle. This setting is selectable only if the output waveform is a pulse wave.
• FREQ & AMPL Sweeps both the frequency and the amplitude. If you select sweeping by arbitrary waveform, the FG will automatically use the A1 waveform as the frequency sweep, and the A2 waveform as the amplitude sweep.
Setting the sweep conditions Conditional settings vary according to the selected sweep item. Refer to Section 5.4 for detailed information about settings and procedures. Note Use the MAIN OUTPUT SETUP screen to select and set up all parameters (other than sweep parameters) for the waveform to be swept. For information about setting up the sweep parameter, refer to the next page.
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5-3
5.4 Setting the Sweep Conditions Procedure The diagram below shows how the display appears when the sweep item is FREQ. 3 Press to set the start or center frequency. 4 Input the numerical value at the keypad.
1 Select the channel.
CH
WAVE
5 Press the unit
button. 2 Call the SWEEP
SWEEP
3 Press to set the
SETUP screen.
stop or span frequency.
MOD
UTIL
TRIG
3 Press to set the sweep time.
Explanation If sweep item = FREQ, set as follows. • START FREQ (or MIN FREQ, if sweep type is “arbitrary”) Range: 1µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 1kHz • STOP FREQ (or MAX FREQ, if sweep type is “arbitrary”) Range: 1µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 10kHz • CENTER FREQ Range: 1µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 5.5kHz • SPAN FREQ Range: 0µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 9kHz
If sweep item = PHASE: •
START PHASE (or MIN PHASE, if sweep type is “arbitrary”) Range: –360deg to +360deg Resolution: 0.01deg Default: 0deg
•
STOP PHASE (or MAX PHASE, if sweep type is “arbitrary”) Range: –360deg to +360deg Resolution: 0.01deg Default: 180deg
• CENTER PHASE Range: –360deg to +360deg Resolution: 0.01deg Default: 90deg • SPAN PHASE Range: 0 to +720deg Resolution: 0.01deg Default: 180deg
If sweep item = AMPL: • START AMP (or MIN AMP, if sweep type is “arbitrary”) Range: ±20Vpp (Sine wave: ±7071Vrms; Square/pulse wave: +110Vrms; Triangular wave: ±5.774Vrms) Resolution: 1mVpp Default: 1Vpp • STOP AMP (or MAX AMP, if sweep type is “arbitrary”) Range: ±20Vpp (Sine wave: ±7.071Vrms; Square/pulse wave: ±10Vrms; Triangular wave: ±5.774Vrms) Resolution: 1mVpp Default: 5Vpp • CENTER AMP Range: ±20Vpp (Sine wave: ±7.071Vrms; Square/pulse wave: ±10Vrms; Triangular wave: ±5.774Vrms) Resolution: 1mVpp Default: 3Vpp
5-4
IM 706111-01E
5.4 Setting the Sweep Conditions • SPAN AMP Range: 0Vpp to 40Vpp (Sine wave:±14.142Vrms; Square/pulse wave: ±20Vrms; Triangular wave: ±11.547Vrms) Resolution: 1mVpp Default: 4Vpp
If sweep item = OFFSET • START OFFSET (or MIN OFFSET, if sweep type is “arbitrary”) Range: –10V to +10V Resolution: 1mV Default: –2V • STOP OFFSET (or MAX OFFSET, if sweep type is “arbitrary”) Range: –10V to +10V Resolution: 1mV Default: 2V • CENTER OFFSET Range: –10V to +10V Resolution: 1mV Default: 0V • SPAN OFFSET Range: 0V to 20V Resolution: 1mV Default: 4V
If sweep item = DUTY • START DUTY Range: 0% to 100% Resolution: 0.01% Default: 10% • STOP DUTY Range: 0% to 100% Resolution: 0.01% Default: 90% • CENTER DUTY
5
Range: 0% to 100% Resolution: 0.01% Default: 50%
S e t t i n g t h e S w e e p O u t p u t
• SPAN DUTY Range: 0% to 100% Resolution: 0.01% Default: 80%
If the sweep item is = FREQ & AMPL: Set frequency and amplitude values as described above.
Setting the sweep time The range, resolution, and default for the sweep-time setting are the same for all sweep items. Range: 1ms to 1000s Resolution: 10µs Default: 1s Note that REPEAT-mode sweeping has a jitter of 1.6µs.
Entering the settings The SWEEP SETUP screen displays the buttons appropriate for the sweep item that you have selected. To set each value, press the corresponding button, then do either of the following. 1. Input the numerical value at the keypad. (You can use the [<] key as a backspace.) Then press the appropriate unit button. 2. Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to set the value (see diagram below). Repeat until all digits are set. If necessary, change the frequency unit by pressing one of the displayed unit buttons. (If the display does not show all available digits, you can produce the remaining digits by moving the cursor to the rightmost column, then pressing [>] key once again.) 2 Turn the rotary knob to change the value.
Unit button 1 Move the cursor to the digit you want to set.
Note • For each sweep item, the start/stop settings are linked to the center/span settings. Changing a value in either pair automatically generates a corresponding change in the other pair. • If you attempt to set a value higher than the legal maximum or lower than the legal minimum, the FG automatically adjusts the value to the legal maximum or minimum, respectively. • If sweeping with an arbitrary waveform: If the MIN value is higher than the MAX value, the FG inverts the arbitrary waveform about the Y axis value before sweeping.
IM 706111-01E
5-5
5.5 Controlling the Sweep (ON/OFF and HOLD) Procedure 1 Select the channel.
CH
WAVE
2 Call the SWEEP
Shows the running value of the sweep item.
SWEEP
MOD
UTIL
Press to start or stop sweeping.
TRIG
Press to display the running value of the sweep item. Press to set sweep hold ON or OFF.
Explanation Turning Sweep ON/OFF The {SWEEP ON/OFF} button sets sweeping on and off. The action depends on the sweep mode. • If sweep mode is REPEAT, {SWEEP OFF/ON} button sets the sweep on or off each time it is pressed. • If sweep mode is SINGLE or SINGLE & HOLD, pressing {SWEEP ON} button places the unit into trigger standby, so that sweeping will start at the next trigger. Pressing {SWEEP OFF} button switches the sweep off. When you start a sweep, the output mode automatically becomes “continuous,” while modulation and sequencing automatically switch off. Sweeping automatically goes off if you do any of the following: • Change the output mode • Turn modulation ON • Turn sequencing ON
Turning Hold ON/OFF Press the {HOLD OFF/ON} button to set or release the hold. The hold state applies to both channels; it is not possible to place the hold on one channel only.
Monitoring the Sweep If you press the {MONITOR} button, the screen will display the sweep-item value in real time, with the value changing as the sweep progresses. If the monitor function is ON and the sweep is in hold state, the display will show the current (held) sweep value. You can then increment or decrement the value by turning the rotary knob. If you then switch the sweep back on, it will resume starting from the new value. Note Sweep hold can also be controlled by an external signal applied at the SWP HOLD IN connector. A HIGH level at this terminal forces the sweep into hold regardless of action of the {HOLD ON/OFF} button.
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IM 706111-01E
5.6 Setting the Sweep Marker Procedure The diagram below shows how the displays appears when the sweep item is FREQ. 4 Input the numerical value at the keypad.
1 Select the channel.
CH
WAVE
5 Press the unit
button. 2 Call the SWEEP
SWEEP
SETUP screen. MOD
3 Press to set the
stop or span marker.
UTIL
TRIG
5 S e t t i n g t h e S w e e p O u t p u t
3 Press to set the start or center marker.
Explanation If sweep item = FREQ, set as follows. • START MARKER Range: 1µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 1kHz • STOP MARKER Range: 1µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 5kHz • CENTER MARKER Range: 1µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 3kHz • SPAN MARKER Range: 0µHz to 15MHz Resolution: 1µHz (or 9 digits) Default: 4kHz
If sweep item = PHASE: • START MARKER Range: –360deg to +360deg Resolution: 0.01deg Default: 0deg • STOP MARKER Range: –360deg to +360deg Resolution: 0.01deg Default: 90deg • CENTER MARKER Range: –360deg to +360deg Resolution: 0.01deg Default: 45deg • SPAN MARKER Range: 0deg to 720deg Resolution: 0.01deg Default: 90deg
If sweep item = AMPL: • START MARKER Range: ±20Vpp (Sine wave: ±7.071Vrms; Square/pulse wave: ±10Vrms; Triangular wave: ±5.774Vrms) Resolution: 1mVpp Default: 1Vpp • STOP MARKER Range: ±20Vpp (Sine wave: ±7.071Vrms; Square/pulse wave: ±10Vrms; Triangular wave: ±5.774Vrms) Resolution: 1mVpp Default: 3Vpp • CENTER MARKER Range: ±20Vpp (Sine wave: ±7.071Vrms; Square/pulse wave: ±10Vrms; Triangular wave: ±5.774Vrms) Resolution: 1mVpp Default: 2Vpp (Continues on next page.) IM 706111-01E
5-7
5.6
Setting the Sweep Marker • SPAN MARKER Range: 0 to 40Vpp (Sine wave: ±14.142Vrms; Square/pulse wave: ±20Vrms; Triangular wave: ±11.547Vrms) Resolution: 1mVpp Default: 2Vpp
If sweep item = OFFSET: •
START MARKER Range: –10V to +10V Resolution: 1mV Default: –1V
• STOP MARKER Range: –10V to +10V Resolution: 1mV Default: 1V • CENTER MARKER Range: –10V to +10V Resolution: 1mV Default: 0V •
SPAN MARKER Range: 0V to 20V Resolution: 1mV Default: 2V
If sweep item = DUTY: • START MARKER Range: 0% to 100% Resolution: 0.01% Default: 10% • STOP MARKER Range: 0% to 100% Resolution: 0.01% Default: 50% • CENTER MARKER Range: 0% to 100% Resolution: 0.01% Default: 30% • SPAN MARKER Range: 0% to 100% Resolution: 0.01% Default: 40%
Entering the marker settings The SWEEP SETUP screen displays the buttons appropriate for the sweep item that you have selected. To set each value, press the corresponding button, then do either of the following. 1. Input the numerical value at the keypad. (You can use the [<] key as a backspace.) Then press the appropriate unit button. 2. Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to set the value (see diagram below). Repeat until all digits are set. If necessary, change the unit by pressing one of the displayed unit buttons. (If the display does not show all digits, you can produce the remaining digits by moving the cursor to the rightmost column, then pressing [>] key once again.) 2 Turn the rotary knob to change the value.
Unit button 1 Move the cursor to the digit you want to set.
Outputting the sweep marker signal Refer to Sections 9.6 (page 9-7) and 9.10 (page 9-14) for information about how to output the sweep marker signal. Note • The unit does not output sweep-marker signals for “FREQ & AMPL” sweeps, with this exception: If the sweep type is “arbitrary”, the unit will output the markers set up for arbitrary waveform A1 (the frequency sweep). • For each sweep item, the start/stop settings are linked to the center/span settings. Changing a value in either pair automatically generates a corresponding change in the other pair. • If you attempt to set a value higher than the legal maximum or lower than the legal minimum, the FG automatically adjusts the value to the legal maximum or minimum, respectively. • If you set the marker to a value outside the range of the actual sweep, the marker will not be output.
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6.1 Setting the Modulation Type Procedure 3
1
Select the channel.
Call the MODULATION TYPE window.
CH
Press to setup carrier wave
WAVE
SWEEP
2
Call the MODULATION SETUP screen.
MOD
Appears only if carrier is a pulse wave
UTIL
TRIG
4
Select the modulation type.
Details Setting up the carrier wave Use the MAIN OUTPUT SETUP screen (press the [WAVE] key) to set up the carrier wave. The procedure is the same as for setting up an unmodulated output waveform; refer to Chapter 4 for setup instructions. But note that it is also possible to set or change the value of the carrier’s modulated characteristic directly from the MODULATION SETUP screen, as indicated below.
Selecting the modulation type Select any of the following modulation types. • AM (Amplitude Modulation) The carrier-wave amplitude can be set at the MODULATION SETUP screen. • DSB-SC AM (Double-Sideband Suppressed-Carrier Amplitude Modulation) The carrier-wave amplitude can be set at the MODULATION SETUP screen. • FM (Frequency Modulation) The carrier-wave frequency can be set at the MODULATION SETUP screen. • PM (Phase Modulation) The carrier-wave phase can be set at the MODULATION SETUP screen. • PWM (Pulse Wave Modulation) Pulse-wave modulation (duty-cycle modulation) is available only if the carrier waveform is a pulse wave. The carrier-wave duty cycle can be set at the MODULATION SETUP screen. • OFFSET The carrier-wave offset can be set at the MODULATION SETUP screen. Note Refer to Section 6.3 (page 6-3) for instructions on how to switch modulation ON and OFF.
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6 S e t t i n g t h e M o d u l a t i o n O u t p u t
6.2 Selecting the Modulator Waveform Procedure 3 Call the MODULATION FUNCTION window.
1 Select the channel.
CH
WAVE
SWEEP
2 Call the MODULATION
MOD
SETUP screen. UTIL
TRIG
4 Select the modulator waveform.
Explanation Selecting the modulator waveform Select any one of the following four modulator waveforms. •
Sine wave
•
Triangular wave Set the symmetry to between 0.00% and 100.00%, as described below.
Pulse wave
•
Set the duty cycle to between 0.00% and 100.00%, as described below. •
~
Arbitrary waveform A1 to A8 (available on FG310/FG320 only) Refer to Chapter 8 for details about how to create arbitrary waveforms.
Setting the symmetry (if triangular wave) or duty cycle (if pulse wave) If the selected modulated waveform is triangular or pulse, the MAIN OUTPUT SETUP screen displays the {SYMMETRY} or {DUTY} button, respectively. To set the value, press the appropriate button and then do either of the following. • Input the desired value at the keypad, then press {%} button. • Use the arrow keys to move the cursor to the digit you want to set, then turn the rotary knob to select the value. Repeat until all digits are set. 2 Turn the rotary knob to change the value.
1 Move the cursor to the digit you want to set.
Note The modulator waveform has a jitter of 1.6µs.
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6.3 Setting the Modulation Parameters; Switching Modulation ON/OFF Procedure
The diagram below shows how the display appears when the modulation type is AM. 3
Press to set the modulator's frequency. 4 Input the numerical value
at the keypad.
1 Select the channel.
CH
WAVE
5 Select the unit.
SWEEP
3 Press to set the
carrier's amplitude. 2 Call the MODULATION
MOD
SETUP screen. UTIL
Press to switch modulation ON or OFF.
TRIG
3 Press to set the modulation depth.
Explanation Setting the modulation parameter
6
Each modulation type takes a single parameter that determines the degree of modulation. • AM: Depth Range: 0% to 100% Resolution: 0.01% Default: 50% • FM: Deviation Range: 0MHz to 7.5MHz Resolution: 0.001mHz Default: 100Hz • PM: Deviation (Phase deviation) Range: 0deg to 360deg Resolution: 0.01deg Default: 90deg • PWM: Deviation (Duty-cycle deviation) Range: 0% to 50% Resolution: 0.01% Default: 10% • OFFSET: Deviation (Offset-voltage deviation) Range: 0V to 10V Resolution: 1mV Default: 1V
S e t t i n g t h e M o d u l a t i o n O u t p u t
Setting the value of the carrier’s modulated characteristic Although you can set all carrier-wave parameters at the MAIN OUTPUT SETUP screen, it is also possible to set or adjust the value of the carrier’s modulated characteristic directly at the MODULATION SETUP screen. The adjustable carrier parameter depends on the modulation type, as follows. • If AM → carrier amplitude • If PM → carrier phase • If DSB-SC AM → carrier amplitude • If PWM → carrier duty cycle • If FM → carrier frequency • If OFFSET → carrier offset
Setting the parameters The MODULATION SETUP screen displays the buttons appropriate for the selected modulation type. To set each value, press the appropriate button and then do either of the following. • Input the desired value at the keypad, then press the unit button. • Move the cursor to the digit you want to set, then turn the rotary knob to select the value. Repeat until all digits are set.
Switching Modulation ON/OFF The {MODULATE ON/OFF} button sets modulation on and off. When you set modulation ON, the output mode automatically becomes “continuous”, while sweep and sequencing automatically switch off. Modulation automatically goes off if you change the output mode or begin execution of sweeping or sequencing. Note that any changes you make to the carrier’s parameters while modulation is ON will not become effective until modulation is switched OFF and then back ON.
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7.1 Setting Up Sequences with the Sequence Editor (FG310/FG320 only) Procedure Press the [UTIL] key to display the UTILITY MENU; then press the {SEQ} button to display the SEQUENCE window (shown below). Cursor positioning: Dial Numerical input: Keypad Backspace key: Current page Change the page. ...Previous page ...Next page
Switch the channel.
CH
Return to the UTILITY MENU. WAVE
Delete all data from all pages ("Start Over").
SWEEP
Display the FILE window (file-handling window).
MOD
UTIL key
Register numerical settings.
UTIL
Switch sequencing ON or OFF.
TRIG
7
Input an exponent value. Undo the previous operation. Delete all data on the current page. Insert a new page preceding the current page.
Explanation Setting the output waveform and attenuator Use the MAIN OUTPUT SETUP screen (press the [WAVE] key) to select the output waveform and to set the attenuator. Note that the output mode will automatically switch to CONT (continuous) whenever you start sequence output. For information about how to set up the output waveform, see Section 4.2 (page 4-2). For information about setting the output attenuator, see Section 4.6 (page 4-8).
Setting the sequence parameters Each step in the sequence consists of six parameters and occupies one full display page. You can set up to 256 steps per sequence. Refer to Sections 4.2 to 4.5 for the ranges, resolutions, and defaults of all parameters other than sequence markers. For information about sequence-marker output, refer to Sections 9.6 and 9.10. Output frequency Phase Amplitude Offset voltage Duty cycle (effective only with pulse output) Sequence marker HIGH-level step →「 1」 if your FG includes the external LOW-level step →「 0」 sweep control option, you can set marker levels from 0 to 7
(Explanation continues on next page.)
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S e t t i n g a n d O u t p u t t i n g t h e S e q u e n c e
7.1 Setting Up Sequences with the Sequence Editor (FG310/FG320 only) Important information about sequence editing • If you press {ENTER} button at the first page while the page is still blank, the FG will automatically set the parameters for the first step equivalent to those for the waveform defined under the MAIN OUTPUT SETUP screen. • If you close terminate editing while a page is incomplete, all settings on the page become invalid. • If you press {ENTER} button while one or more parameters are left blank, the FG automatically copies in the corresponding parameter values from the preceding page. • To jump to a desired page: Move the cursor to the page display area, input the desired page number at the keypad, then press {ENTER} button. • To enter an exponent: press {EXP} button, then enter the exponent value (“+” or “–”, followed by a single digit) at the keypad. (Example: 2.00000E+3)
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7.2 Outputting a Sequence (FG310/FG320 only) Procedure The diagram below shows how the SEQUENCE window appears when sequence output is ON. Current page (step)
Switch the channel.
CH
Return to UTILITY menu. WAVE
SWEEP
Current output parameters
MOD
UTIL
Set sequence output ON/OFF.
TRIG
Advance to next step of sequence.
Explanation Switching sequence output ON/OFF To start sequence output, press the {SEQUENCE ON/OFF} button once. The FG responds by
7
outputting the first step; the LCD changes to the format illustrated above, showing the current step’s parameters. You can switch sequencing off by pressing the {SEQUENCE ON/OFF} button again; the LCD will then switch back to the format shown on page 7-3 above. When you set sequence output ON, the output mode automatically becomes “continuous,” while sweep and modulation automatically switch OFF. Sequence output, in turn, will automatically switch off if you change the output mode or switch to sweep or modulation output.
Advancing to the next step of the sequence You can advance the step by pressing the [TRIG] key, by applying a trigger signal to the TRIG IN terminal, or by issuing the GP-IB *TRG command. (Refer to Section 9.1 for information about controlling the output via the TRIG IN/GATE IN terminal.) Note When you switch sequence output ON, the MAIN OUTPUT SETUP screen displays the “SEQUENCE EXECUTING!” message.
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7.3 Saving, Loading, and Deleting Sequence Data Files (FG310/FG320 only) Procedure Begin by pressing the {FILE} button in the SEQUENCE window (see page 7-1). The FG responds by displaying the FILE window, as shown below. The window shows the names of the sequence files stored in the floppy disk currently inserted in the FG’s drive. List of files containing saved sequence data (Select file by turning the dial.) File creation date
CH
Return to the SEQUENCE menu. WAVE
SWEEP
UTIL key
Save the data from the SEQUENCE window to file.
MOD
Load the selected file.
UTIL
Select a file for deletion. Delete the selected file(s).
TRIG
Explanation Preparing to save or load a file... Please insert the appropriate floppy disk into the drive before you press the {FILE} button in the SEQUENCE window. If you press {FILE} button while no disk is present, the FG will return the error message “No disk inserted. Please insert a disk.” If you see this message, you should press the {OK} button, insert the appropriate floppy disk, then press the {FILE} button again.
Saving data to file To save the data currently selected in the SEQUENCE window, press {SAVE} button. The FG responds by displaying the FILE/SAVE window shown below. Enter a filename consisting of one to eight alphanumerics, using the displayed buttons for letter input and the keypad for numeric input. Note that you can use the [<] key as a backspace. When you have finished, press the {ENTER} button to save the data to disk. The FG creates the file, saves your data into it, then returns you to the FILE window. Note that the FG automatically adds the “.CSV” extension to the filename. All save files are saved into the SEQUENCE directory.
Return to the FILE window. Filename input
Create the file and save the data.
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7.3
Saving, Loading, and Deleting Sequence Data Files (FG310/FG320 only)
Loading a sequence file 1. Insert the floppy disk containing the file into the drive. 2. Press the {FILE} button in the SEQUENCE window. The LCD responds by displaying the FILE window. The window displays the names of all “.CSV” files located in the disk’s SEQUENCE directory. 3. Rotate the rotary knob until the highlight is at the file you want to load. 4. Press the {LOAD} button. The FG loads the file and returns you to the SEQUENCE window.
Sequence data format The sequence information exists in the form of comma-separated text data, a format widely used by spreadsheets and databases. The parameters for each step are stored in the following order: frequency, phase, amplitude, offset voltage, duty cycle, marker. If you create a sequence-data file externally, you must conform to this format. When saving externally created data to a floppy disk, be sure to save the file into a directory named “SEQUENCE”, and be sure to add the “.CSV” extension to the filename.
FR E Q
PH A SE
A M PL O FFSE T
D UTY M ARKER
1.00000E +3,0.000,10.0000,0.0000,50.00,0 2.00000E +3,0.000,10.0000,0.0000,50.00,0 3.00000E +3,0.000,10.0000,0.0000,50.00,0 Deleting one or more sequence files 1. Insert the floppy disk containing the file(s) you want to delete. 2. Press the {FILE} button in the SEQUENCE window, so that the FILE window appears. The window displays the names of all “.CSV” files located in the disk’s SEQUENCE directory. 3. Rotate the rotary knob so that the highlight moves to the name of a file you want to delete. Then press the {DELETE SET} button to mark the file for deletion. An asterisk (*) appears to the left of the filename to indicate that the file is marked for deletion, as illustrated below. 4. To mark additional files, repeat step (3) above as necessary. If you make an error and wish to
S e t t i n g a n d O u t p u t t i n g t h e S e q u e n c e
unmark a marked file, move the highlight back to the filename and press {DELETE SET} button once again. 5. Press {DELETE EXEC} button to delete all marked files.
Note For details about how to respond to error messages that may appear during execution of the procedures above, refer to Section 11.1 (page 11-1).
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7-5
8.1 Loading Waveform Data (FG310/FG320 only) Procedure 1. Insert the floppy disk containing the stored waveform data into the disk drive. 2. Press [UTIL] key to call the UTILITY menu. 3. Press {ARB} button to call the ARB window. 4. Press the {ARB NO.} button to open the ARB NO. window (arbitrary-waveform selection window). Open the ARB NO. window.
Return to the UTILITY menu.
5. Press to select the load destination.
Return to the ARB window.
8
Select the waveform number to which you want to load the data.
A r b i t r a r y W a v e f o r m s a n d S w e e p P a t t e r n s
6. Press the {FILE} button (in the ARB window) to call the FILE window.
Return to the UTILITY menu. Open the FILE window.
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8.1 Loading Waveform Data (FG310/FG320 only) 7. Rotate the rotary knob to select the file you want to load. The currently selected file is highlighted on the screen. (If you are loading a file created on a different system, you should first press the {C. DIR} button to change to the directory containing the file.) 8. Press the {LOAD} button to execute the load. File creation data
Return to the ARB window.
Load the highlighted waveform file.
Change the directory.
Name of waveform file on disk. Select a file by turning the dial.
To modify (clip or normalize) a loaded waveform... 9. Press the {MODIFY} button to call the Modify window.
Return to the UTILITY menu.
Call the Modify window.
To clip the waveform... 10. To set the start position, press {X START CURSOR} button and then move the cursor to the desired start point. To set the stop position, press {X STOP CURSOR} button and then move the cursor to the desired stop point. You can move the cursor using either the rotary knob or, for greater precision, the left or right arrow key: each press on an arrow key moves the cursor one point in the corresponding direction. Cursor
X-axis, Y-axis, and marker values at the current cursor position.
Return to the ARB window. Press for start-point selection. Press for stop-point selection.
Clipped range
Marker level
Clipped range
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8.1 Loading Waveform Data (FG310/FG320 only) 11. When you have finished setting the positions, press {X CLIPPING} button to execute the clip.
To normalize the waveform... 12. Press the {Y NORMALIZE} button.
Return to the ARB window.
Normalize the waveform.
Return to the ARB window.
Waveform after normalization
Explanation Compatible waveform data The FG310 and FG320 can load waveform data created by any of the Yokogawa device types indicated below. Contact your Yokogawa representative if you require information about compatibility of data created on device types not mentioned here. • All arbitrary-waveform generators (“.WDT” file extension) • The DL4000-series and DL5000-series digital oscilloscopes (“.WVF” file extension) • ORM-series OR1400 oscillographic recorders (“.DAT” file extension) The FG310 and FG320 always store waveform data into the FG-WAVE directory, while other device types do not. To load data stored by another device type, therefore, you must first select the appropriate directory (at Step 7 of the above Procedure). You can do this as follows. 1. Turn the rotary knob so that the highlight is at the “<..>” filename. 2. Press the {C. DIR} button to move to the root directory. 3. Turn the rotary knob to highlight the name of the directory containing the file you need. 4. Press {C. DIR} button to display the files located in the selected directory.
Maximum number of arbitrary waveforms The FG’s internal memory can store up to eight arbitrary waveforms (A1 to A8).
Modifying your waveform data You can perform two operations on loaded waveform data: (1) clipping, and (2) normalization.
• Clipping Use this function to select and expand an arbitrary segment of the existing waveform. First set the desired start and stop points, then press {X CLIPPING} button to execute. The FG discards the waveform area outside the selected segment, then expands the selected segment along the X-axis so that it becomes as long as the original waveform.
• Normalization Use this function to expand the waveform in the Y-direction such that its maximum value matches the high level and its minimum value is at the low level. Normalization improves the S/N ratio. Note You can change the marker value of a selected segment (at Step 10 of the above Procedure) by pressing either 0 or 1 (or 0 to 7, if your FG is equipped with the external sweep-control option) at the keypad. IM 706111-01E
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8 A r b i t r a r y W a v e f o r m s a n d S w e e p P a t t e r n s
8.2 Creating an Arbitrary Waveform from Text Data (FG310/FG320 only) Procedure 1. Press [UTIL] key to call the UTILITY menu. 2. Press {ARB} button to call the ARB window.
Define the area... 3. Press {AREA DEFINE} to call the AREA DEFINE window.
Return to the UTILITY menu.
Open the AREA DEFINE window.
4. Set the maximum X value and the minimum and maximum Y values.
Return to the ARB window.
Press to select maximum X. Press to select minimum Y. Press for select maximum Y. Press to register numerical settings.
Press to enter an exponent value.
5. After setting all values, press {ESC} button to return to the ARB window.
Enter the text data... 6. Press {TEXT EDIT} button to call the TEXT EDIT window.
Return to the UTILITY menu.
Call the TEXT EDIT window.
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8.2
Creating an Arbitrary Waveform from Text Data (FG310/FG320 only)
7. Input the X and Y coordinates and the marker value for each point. (Refer to page 8-6, “Creating the text data,” for additional information). X-coordinate value Y-coordinate value Marker value
To move cursor vertically : Rotary knob To move cursor horizontally : To input a numeral : Keypad To backspace : Return to the ARB window. Delete all point data ("start over").
Call the INTERPOLATE window.
Register the point values.
Press to enter an exponent value. Undo the previous operation. Delete all data for the selected point. Insert a new point directly above the selected point.
Select the interpolation method... 8. Press {INTERPOLATE} button to call the INTERPOLATE window. 9. Select the interpolation method.
Return to the TEXT EDIT window.
8 A r b i t r a r y W a v e f o r m s a n d S w e e p P a t t e r n s
Press to select the interpolation method.
Return to the UTILITY menu.
The finished waveform (after interpolation) IM 706111-01E
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8.2 Creating an Arbitrary Waveform from Text Data (FG310/FG320 only)
Explanation Defining the area The X-axis represents the different phases along the waveform. The area between the 0 point and Xmax defines one cycle of the waveform. This is true regardless of whether the arbitrary wave is used as an output wave, a sweep wave, or a modulator wave. The Y-axis represents the output voltage. When the waveform is used as an output wave, the Ymin and Ymax values correspond to the wave’s high-level and low-level voltages, respectively. When the waveform is used as a sweep, these values give the minimum and maximum values for the sweep item. When the waveform is used as a modulator, the values give the maximum negative and positive deviations. Setting range for X{ss}max{/ss}: -999.999E+9 to +999.999E+9 Setting range for Y{ss}min{/ss}: -999.999E+9 to +999.999E+9 Setting range for Y{ss}max{/ss} : -999.999E+9 to +999.999E+9 Ymax
Xmax
Ymin The Xmin value is always 0.
Creating the text data The text data defines individual points (X, Y coordinates) on the waveform, together with the marker value to be output at each point. If the waveform is used as an output wave, each marker defines an event output value (0 or 1; or 0 to 7, if external sweep-control option is installed). If the waveform is used as a sweep pattern, each marker gives a sweep-marker level (0 for low level, 1 for high level; or 0 to 7, if sweep-control option is installed). You can define a maximum of 256 points for each arbitrary waveform. Define points from “left” to “right” (from Xmin to Xmax). Each successive point must have a higher X-value then its predecessor. If you need to move back and insert a point with a lower X value, use the rotary knob to bring the highlight to the first point whose X value is higher than that of the point you want to enter, then press {INS LINE} button to insert the new point directly above the cursormarked point. X coordinate
Y coordinate Marker value
Insertion point
Press to enter an exponent value.
Undo the previous operation. Delete all data for the selected point. Insert a new point directly above the selected point. Note Refer to Section 9.6 (page 9-7) for information about marker output from the CH1 MARKER OUT terminal. Refer to Section 9.10 for information about marker output through the DIGITAL CTRL I/O connector.
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8.2
Creating an Arbitrary Waveform from Text Data (FG310/FG320 only)
Creating and loading external text definitions You can create your waveform definitions (text definitions) at an external editor or spreadsheet for subsequent loading to the FG. Enter your data using the following format: AREA X max,Y min,Y max DATA X1,Y1,M1 X2,Y2,M2
： ：
：
where Xn, Yn, and Mn above correspond to the X-coordinate, Y-coordinate, and marker value for Point n.
Save the resulting file to floppy disk, into a directory named “TEXT”. Be sure to append file extension “.CSV” to the filename. To load the data into the FG, insert the floppy disk into the FG’s disk drive. Call the ARB window, press {TEXT EDIT} button to open the TEXT EDIT window, then press {FILE}button. Select the desired file with the cursor, then press {LOAD} button. Rotate the rotary knob to select the file.
Load the selected file.
8
Selecting the interpolation method The interpolation method determines how the FG “connects” adjacent points in order to create the finished waveform. You can select any one of the following four methods. • LINEAR: Connect by straight line. • STEP: Connect in step pattern. • RELAX SPLINE: Connect by free-end spline. • PERIOD SPLINE: Connect by periodic spline (so that the end point connects smoothly to the start point)
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8.3 Saving and Deleting Waveforms and Text Files (FG310/FG320 only) Procedure Saving/deleting waveforms Call the ARB window (see page 8-1) and press the {FILE} button. The LCD displays the FILE window, as shown below. Names of waveform files currently saved on disk. Rotate rotary knob to select file(s) for deletion.
File creation date
Return to the ARB window.
Save the waveform currently displayed in the ARB window.
Select a file for deletion. Delete the selected file(s).
The "*" preceding the filename means that the file is marked for deletion.
Change the directory.
Saving/deleting waveform text data Call the ARB window, press {TEXT EDIT} button to open the TEXT EDIT w indow, then press {FILE} button. The LCD displays the TEXT EDIT/FILE window, as shown below. Names of waveform text files currently saved on disk Rotate the dial to select file(s) for deletion.
File creation date
Return to the ARB window.
Save the text data currently displayed in the TEXT EDIT window. Select a file to be deleted. Delete the selected file(s).
The "*" preceding the filename means that the file is marked for deletion.
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8.3
Saving and Deleting Waveforms and Text Files (FG310/FG320 only)
Explanation Preparation Insert the appropriate floppy disk (the disk to which you want to save, or from which you want to delete) into the drive. Refer to Section 10.2 for information about floppy-disk handling.
Saving a waveform or a text-data definition to file When you press {SAVE} button, the LCD displays the FILE/SAVE window shown below. Enter a name consisting of one to eight alphanumerics, using the displayed buttons for letter input and the keypad for numeric input. Note that you can use the [<] key as a backspace. When you have finished, press the {ENTER} button to save the data to disk. The FG creates the file, writes the data into it, then returns you to the previous FILE window. The FG automatically assigns the “.WVF” extension to waveform files, and the “.CSV” extension to waveform text files.
Return to the FILE window. Filename input
Create the file and save the data.
Deleting waveform or text files 1. Insert the floppy disk containing the file(s) you want to delete. 2. Press the {FILE} button in the ARB window (if deleting waveform files) or the TEXT EDIT window (if deleting text files), so that the corresponding FILE window appears.
8
3. Rotate the rotary knob so that the highlight moves to the name of a file you want to delete. Then press the {DELETE SET} button to mark the file for deletion. An asterisk (*) appears to the left of the filename to indicate that it is marked for deletion, as illustrated below. 4. To mark additional files, repeat step (3) above as necessary. If you make an error and wish to unmark a marked file, move the highlight back to the filename and press {DELETE SET} button once again. 5. Press {DELETE EXEC} button to delete all marked files.
Note For details about how to respond to error messages that may appear during execution of the procedures above, refer to Section 11.1 (page 11-1).
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9.1 Controlling Waveform Output with TRIG/GATE Input This chapter describes how to control waveform output by applying an external trigger or gate signal. Specifically, you can use gate signals to control burst output; and you can use trigger signals to control burst output, SINGLE sweeps, SINGLE & HOLD sweeps, and sequence output. Your trigger and gate signals should meet the following specifications.
Trigger/gate input specifications Input level: TTL level Non-destructive input voltage: –10V to +15V Input impedance: At least 1k Ω
Caution • Never apply excessive voltage to the input terminal, as this may cause damage to the FG.
Input terminal and circuitry The TRIG IN/GATE IN terminal is located on the rear panel. Note that the terminal serves for both trigger input and gate input. ＋ 5V VHC14 1kΩ TRIG IN/ GATE IN
47kΩ
Linked to trigger slope TTL
Pull-up/ pull-down circuit
Timing chart When using trigger to generate a burst ＞200ns
Trigger signal
600ns (typ)*
Waveform output
＞0ns (typ)
* 780ns (typ) for square waveform
9
When using gate input to generate a burst ＞200ns Gate signal
t
t
Waveform output
300ns (typ) < t < (1 cycle of waveform output) + 300ns (typ)
When using trigger to generate SINGLE-mode sweep ＞200ns
Trigger signal 3μs (typ)
>50ms (typ)
Waveform output (offset sweep)
When using trigger to generate SINGLE & HOLD sweep ＞200ns
Trigger signal 3μs (typ)
＞0μs ＜55ms (typ)
＞0μs
Waveform output (offset sweep) IM 706111-01E
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9.1 Controlling Waveform Output with TRIG/GATE Input When using trigger input to control sequence output ＞5μs ＞200ns
Trigger signal 3μs (typ)
Waveform output (offset sweep)
• Amplitude and offset sweeps require a 5µs settling period. • Trigger jitter for sweep and sequence output is 1.6µs.
Related parameters Use of trigger/gate input requires appropriate parameter settings. Related parameters are as follows.
Output mode (See page 4-1.) Set the output mode to TRIG if you want to control bursts with trigger input. Set to GATE if you want to control bursts with gate output.
Trigger source and burst count (See page 4-9.) To use trigger input to control bursts: set the trigger type to INT or EXT (internal or external), and set a value for the burst count (BURST).
Trigger slope, gate-signal polarity 1. Press [UTIL] key to call the menu. 2. Press {TRIG SLOPE} button to call the TRIGGER SLOPE window.
Press to call the TRIGGER SLOPE (signal polarity) window.
3. Select the appropriate trigger slope or gate polarity. For trigger signals, the setting determines which edge of the trigger pulse generates the trigger. For gate input, the setting selects either positive or negative logic.
Select falling-edge trigger, negative-logic gate
Select rising-edge trigger, positive-logic gate Note • The TRIG/GATE IN signal is ORed with the manual trigger signal (as generated by the {TRIG} button). This means that the {TRIG} button becomes ineffective while TRIG/GATE IN is HIGH. • Switching the trigger-slope parameter may generate a single spurious trigger signal. • Trigger and gate inputs are not channel-specific; input is always received by both channels. • The word “TRIG” appears on the upper right of the screen during trigger or gate input.
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9.2 Holding Sweep with the SWP HOLD input You can hold a sweep by supplying a sweep-hold signal at the SWP HOLD input. The signal should meet the following specifications.
Sweep-hold input specifications Input level: TTL level Non-destructive input voltage: –10V to +15V Pulse width: At least 2µs Input logic: Positive Input impedance: At least 1k Ω
Caution • Never apply excessive voltage to the input terminal, as this may cause damage to the FG.
Input terminal The input terminal is located on the rear panel. SWP HOLD IN
TTL
Input circuitry ＋ 5V VHC14 1kΩ
47kΩ
9
Timing chart ＞2μs Sweep-hold signal
3μs (typ)
3μs (typ)
Waveform output
Amplitude and offset sweeps require a 5µs settling period.
Related parameters You can also hold a sweep by pressing the {HOLD ON/OFF} button in the SWEEP SETUP screen. The hold applies if either the button is ON or the input is active (logical OR). Refer to Section 5.5 (page 5-6) for more information on sweep hold operation. Note • Sweep-hold timing jitter is approximately 1.6µs. • The sweep hold affects both channels: it is not possible to hold a sweep on one channel only. Also not that you cannot use the sweep-hold input while controlling sweep with the external sweep-control option. IM 706111-01E
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E x t e r n a l C o n t r o l S i g n a l s a n d O u t p u t S i g n a l s
9.3 Adding an Output Offset through the SUM IN Input You can add an offset voltage to the output waveform via the SUM IN input. The supplied voltage replaces the waveform’s internal OFFSET setting (if any). The input signal should meet the following specifications.
Offset-voltage input specifications Rated input: ±10V
Non-destructive input voltage: ±35V
Input bandwidth: 100kHz (–3dB) (typ)
Input impedance: Approx. 20k Ω
Caution • Never apply excessive voltage to the input terminal, as this may cause damage to the FG.
Input terminal The input terminal is located on the rear panel. Note that the terminal serves for both offset input and VCA input. SUM IN/ VCA IN
10V
Timing chart SUM IN Waveform output
2V -2V 2V -2V
Setup 1. Press [UTILITY] key to call the UTILITY menu. 2. Press {SUM/VCA} button to call the SUM/VCA window.
Call the SUM/VCA window.
3. Press the {SUM} button of the channel you want to receive the offset. Return to the UTILITY menu.
Apply external offset voltage to channel 1.
Apply external offset voltage to channel 2.
Note • Any internal OFFSET setting made at the MAIN OUTPUT SETUP screen (see page 4-4) is automatically canceled if the channel is set to receive a SUM IN signal. If output mode is set to DC, the FG will output the SUM IN signal without change; the internally set DC voltage is ignored. • Offset input cannot be used together with offset sweep, offset modulation, or sequence output.
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9.4 Controlling Amplitude through the VCA Input You can use the VCA IN terminal to control the output amplitude from an external source. The supplied signal replaces the waveform’s internal amplitude setting. The input signal should meet the following specifications.
VCA IN specifications Rated input: ±10V Input bandwidth: 100kHz (–3dB) (typ)
Non-destructive input voltage: ±35V Input impedance: Approximately 20k Ω
Caution • Never apply excessive voltage to the input terminal, as this may cause damage to the FG.
Input terminal The input terminal is located on the rear panel. Note that the terminal serves for both VCA input and offset input. SUM IN/ VCA IN
10V
Timing chart VCA IN Waveform output
2V -2V 2V 0V -2V
Setup 1. Press [UTILITY] key to call the UTILITY menu. 2. Press {SUM/VCA} button to call the SUM/VCA window.
9 Call the SUM/VCA window.
E x t e r n a l C o n t r o l S i g n a l s a n d O u t p u t S i g n a l s
3. Press the {VCA} button of the channel on which you want to use amplitude control. Return to the UTILITY menu.
Apply amplitude control to channel 1.
Apply amplitude control to channel 2.
Note • Any internal AMPLITUDE setting made at the MAIN OUTPUT SETUP screen (see page 4-4) is automatically canceled if the channel has been set to receive a VCA IN signal. VCA input does not affect DC-mode output. • Application of negative voltage inverts the output waveform. • VCA IN cannot be used together with modulation sweep, AM modulation, DSB-SC AM modulation, or sequence output.
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9.5 Using the CH1 SYNC OUT terminal The CH1 SYNC OUT terminal outputs a TTL-level signal in sync with the Channel 1 output. The terminal’s output specifications are as follows.
CH1 SYNC OUT specifications Output level: TTL level Output impedance: Approx.50Ω (series termination)
Caution • Never apply any external voltage to this terminal. Application of voltage can damage the FG. • Never short the terminal or connect it to a load of less than 1k Ω. Excess current through the terminal can damage the FG.
Output terminal The output terminal is located on the rear panel. CH1 SYNC OUT
TTL
Output circuit ＋ 5V
VHC245X3 Parallel
23Ω
23Ω
Load: High impedance
Timing chart Sine wave
CH1 output waveform
Square wave Triangular wave Ramp wave
Pulse wave Peak-to-peak center
CH1 SYNC OUT
Note It is recommended that you use CH1 SYNC OUT with continuous-mode output. Initial values may be unstable if output mode is triggered or gated.
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9.6 Using the CH1 MARKER OUT terminal The CH1 MARKER OUT terminal outputs channel-1 sweep markers and sequence markers, as described below. The terminal’s output specifications are as follows.
CH1 MARKER OUT specifications Output level: TTL level Output impedance: Approx. 50Ω (series termination)
Caution • Never apply external voltage to the output terminal, as this may cause damage to the FG. • Never short the terminal or connect it to a load of less than 1k Ω. Excess current through the terminal can damage the FG.
Output terminal The output terminal is located on the rear panel. CH1 MARKER
OUT
TTL
Output circuit ＋ 5V
VHC245X3 Parallel
23Ω
23Ω
Load: High impedance
Timing charts
9
When outputting CH1 sweep markers Marker signal is HIGH (“1”) whenever the sweep value is between the stop and start markers, and is LOW (“0”) at all other times. Start-marker frequency
Stop value
Stop-marker frequency Stop-marker value CH1 waveform output
Start-marker value Start value
Marker signal
Marker signal
1 0
When outputting CH1 sequence markers (FG310/FG320 only) Trigger signal
Step 1
Step 2
Step 3
Step 4
Step 1
CH1 waveform output
Change in amplitude
Change in phase End of final step Change in frequency, amplitude, and offset voltage
Marker signal IM 706111-01E
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9.6 Using the CH1 MARKER OUT terminal
Parameters Related to Marker Output Sweep-marker parameters (See page 5-7 for setting instructions.) Use the START and STOP or the CENTER and SPAN parameters to set the sweep range to be accompanied by HIGH marker output. Sweeping outside of this range will produce LOW marker output.
Press to set the stop or span marker.
Press to set the start or center marker.
Sweep markers for arbitrary-wave sweep (See pages 8-2 and 8-6 for setting instructions.) Set the marker at the Modify window. First select the region using the cursor, then select the region’s marker level by pressing [0] or [1] at the keypad. Cursor
Marker level over selected cursor
Marker-level display
Range of marker setting
You can also set marker levels at the TEXT EDIT window. Move the cursor to the MKR column, then press either [0] or [1] at the keypad. Marker setting
Sequence markers (See page 7-1 for setting instruction) Set the marker value for each step to either 1 (HIGH) or 0 (LOW).
Sequence marker HIGH-level region→ [1] LOW-level region→ [0] Note If you are using an external-sweep control option (enabling the use of 3-bit markers), the CH1 MARKER output will reflect the value of the lowest bit only.
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9.7 Using the CH1 SWP OUT terminal The CH1 SWP OUT terminal outputs a signal that represents the channel-1 sweep or modulator signal. The terminal’s output specifications are as follows.
CH1 SWP OUT specifications Output level: ±10V Output impedance: Approx. 50Ω (series termination)
Caution • Never apply external voltage to the output terminal, as this may cause damage to the FG. • Never short the terminal or connect it to a load of less than 1k Ω. Excess current through the terminal can damage the FG.
Output terminal The output terminal is located on the rear panel. CH1 SWP OUT
10V
Timing charts When outputting a CH1 sweep signal Each sweep is represented as a linear voltage rise that starts at –10V and ends at +10V. CH1 Waveform output
Sweep time ＋ 10V
CH1 SWPOUT
9
− 10V
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When outputting a CH1 modulation signal The terminal outputs a modulation waveform having amplitude 20Vpp and no offset. CH1 Waveform output CH1 SWP OUT
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20Vpp
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9.8 Connecting and Synchronizing Multiple Units It is possible to interconnect and synchronize the operation of up to eight function generators. Connection is made via the OPER SYNC IN and OPER SYNC OUT terminals. Setup and operation are described below.
Caution • Never apply excessive voltage to the OPER SYNC terminals. Excess voltage at these terminal can damage the FG. • Never apply external voltage to the OPER SYNC OUT terminals. Doing so may cause damage to the FG.
Terminals and cables The OPER SYNC IN and OPER SYNC OUT terminals are located on the rear panel. Please use Parallel Connection Cable #705926 (1m length) to make each connection. Your setup will not operate correctly if different cables are used. OPER SYNC IN
OPER SYNC OUT
Connecting up Connect master and slaves as illustrated below. OPER SYNC OUT
OPER SYNC IN
・・・
MASTER
SLAVE
SLAVE
SLAVE
Maximum of eight FGs
Timing chart
Master waveform output
t If continuous waveform: t = 70ns (typ)
Slave 1 output t
If triggered waveform: t = 25ns (typ)
Slave 2 output
Trigger operation (for SINGLE sweep, SINGLE & HOLD sweep, or sequence output) has a jitter of 1.6µs.
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9.8
Connecting and Synchronizing Multiple Units
Setting up synchronization 1. Press [UTIL] key to call the UTILITY menu. 2. Press {SYNCHRO} button to call the SYNCHRO setup window.
Call the SYNCHRO window.
3. Press {MASTER} button to select the FG as the master, or {SLAVE} button to select it as a slave. The CHANNEL SYNC setting (see page 10-1) automatically switches “ON” when you make your selection. Indicates whether the FG is selected as master (MSTR) or as slave (SLAV).
Return to the UTILITY menu.
Set FG to slave mode.
Automatically comes on.
Set FG to master mode. Note • You can forcibly synchronize the output phases of all interconnected units by pressing the {PHASE SYNC} button in the master FG’s OUTPUT window. You may need to do this, for example, after changing the output settings at any of the slaves, since the change will cause the units to fall out of sync. Refer to Section 10.1 (page 10-1) for operating details. • If you set an FG for synchronized output before connecting up the cable(s), the unit may fail to operate correctly.
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9 E x t e r n a l C o n t r o l S i g n a l s a n d O u t p u t S i g n a l s
9.9 Using SWP CTRL IN (/R1 Option) Analog Sweep Control It is possible to control sweep externally by applying an analog signal to the SWP CTRL IN terminal. Signal specifications are as follows.
SWP CTRL IN specifications Rated input: ±10V Input bandwidth: 80kHz (–3dB) (typ) Non-destructive input voltage: ±35V Input impedance: Approx. 20k Ω
Caution • Never apply excessive voltage to the input terminal, as this may cause damage to the FG.
Input terminal The input terminal is located on the rear panel. SWP CTRL IN
10V
Timing chart An input voltage of –10V corresponds to the start value; a voltage of +10V corresponds to the stop value. The following diagram shows how the input would control a frequency sweep having a start frequency of 1kHz and a stop frequency of 10kHz.
10V SWP CTRL IN
-10V
Waveform output
10kHz
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1kHz
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9.9 Using SWP CTRL IN (/R1 Option) Analog Sweep Control
Setting up 1. Press [UTIL] key to call the UTILITY menu. 2. Press {OPTION CONTROL} button to call the R1 OPTION CONTROL setup window.
Call the R1 OPTION CONTROL window.
3. Press the {OPTION} button for the channel you want to control. 4. Press {ANALOG} button.
Press to control Channel 1 output. Press to control Channel 2 output.
Press to select analog-input control.
Sweep settings Refer to Chapter 4 for instructions on how to set the sweep parameters. It is recommended that you use the following settings when working with analog sweep control, so as to ensure that –10V and +10V input values will correlate correctly with sweep start and sweep stop.
9
Sweep type: LINEAR Sweep ratio: 100%
Note SWP CTRL IN can also be used to control modulation or sequence output. For modulation, a –10V input value produces maximum negative deviation, while +10V produces maximum positive deviation. For sequencing, –10V corresponds to Step 1, while +10V corresponds to Step 256.
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9.10 Using DIGITA DIGITAL L CTRL I/O (/R1 (/R1 Option) Option) You use this terminal to input sweep and sequence addresses, and to output markers and event values. Input and output specifications are as follows.
Sequence/sweep address input specifications Bits: 8
Input level: TTL level
NonNon-des destr truc ucti tive ve inpu inputt volta voltage: ge: –10 –10V V to +15V +15V
Inpu Inputt impeda impedance nce:: At leas leastt 1k Ω
Sweep clock output specifications Output frequency: 628.292kHz Output level: TTL level Output impedance: Approx. 100Ω 100Ω (series termination)
Marker output specifications Bits: 3 per channel Output level: TTL level Output impedance: Approx. 100Ω 100Ω (series termination)
Event output specifications Bits: 3 per channel Output level: TTL level Output impedance: Approx. 100Ω 100Ω (series termination)
Caution • Never apply external voltage voltage to the output terminal, terminal, as this may cause damage to the FG. • Never short short the the terminal terminal or or connect connect it to a load load of less less than 1k Ω. Excess current through the terminal can damage the FG.
Input/output terminal The input/output terminal is located on the rear panel. The terminal is implemented as a 25-pin Dsub connector. It is recommended that you use the following connector to make the connection: JAE-DB-25PF-N Case: JAE-DB-C2-J9 (manufactured by Japan Aviation Electronics Industry Ltd.) For fault-free operation, cable length should not exceed 1 meter.
1
13 DIGITAL CTRL I/O
25
14
Pi n
S i g na l
Pin
Signal
Pin
Signal
1 2 3 4 5 6 7 8 9
GND CH1 MARKER 1 CH2 MARKER 0 CH2 MAR KER 2 CH1 EVENT 0 CH1 EVENT 2 CH2 EVENT 1 GND SEQ/SWP ADRS 0
10 11 12 13 14 15 16 17 18
SEQ/SWP ADRS 2 SEQ/SWP ADRS 4 SEQ/SWP ADRS 6 GND CH1 MARKER 0 CH1 MARKER 2 CH2 MARKER 1 GND CH1 EVENT 1
19 20 21 22 23 24 25
CH2 EVENT 0 CH2 EVENT 2 SWP CLK SEQ/SWP ADRS 1 SEQ/SWP ADRS 3 SEQ/SWP ADRS 5 SEQ/SWP ADRS 7
SEQ/SWP ADRS 0 to 7: Sequence address or sweep address input CH1 MARKER 0 to 2: Channel-1 marker output CH2 MARKER 0 to 2: Channel-2 marker output CH1 EVENT 0 to 2: Channel-1 event output CH2 EVENT 0 to 2: Channel-2 event output GND: Ground
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9.10 9.1 0
Using Usi ng DIGIT DIGITAL AL CTRL CTRL I/O I/O (/R1 (/R1 Optio Option) n)
Digital-input setup 1. Press [UTIL] [UTIL] key to call call the UTILITY UTILITY menu. 2. Press {OPTION CONTROL} CONTROL} button to call the R1 OPTION CONTROL setup window.
Call the R1 OPTION CONTROL window.
3. Press the {OPTION} button for the channel you want to control. 4. Press {DIGITAL} {DIGITAL} button. button. Return to the UTILITY menu.
Press to control Channel-1 output. Press to control Channel-2 output.
Press to select digital-input control.
Sequence address input • Create sequence sequence data data as describe described d on page page 7-1. 7-1. • Refer to page page 7-3 for informatio information n about how to advance advance through through a sequence sequence and how to switch sequence output ON or OFF. The digital control input allows you to switch steps by inputting the step number directly, as an 8-bit data value. You do not need to use a trigger signal, and you can jump from step to step in arbitrary order. (When using a trigger you have to advance sequentially.) Note that while step numbers range from 1 to 256, digital input values range from 0 to 255; to select Step n, you must input a value of n-1.
Sweep address input Standard sweep control offers a 14-bit sweep, with 16,384 divisions between the start value and the stop value. Digital control allows only an 8-bit sweep, or 256 divisions. Each 8-bit input selects one of these divisions. Address “0” corresponds to the start value, while address “255” corresponds to the stop value. Sweep mode and time settings are ineffective while digital sweep control is in use.
• Refer to pages pages 5-2 through through 5-5 for informati information on about setting setting up sweep sweep output. output.
Modulation address input Standard modulation control uses 14-bit values, allowing for 16,384 deviation levels. Digital control provides only 8 bits, or 256 possible deviation levels. Each 8-bit input selects one of these levels. Address “0” corresponds to maximum negative deviation, while address “255” corresponds to maximum positive deviation.
• Refer to pages pages 6-1 through through 6-3 for details details about setting setting up modulatio modulation n output. output.
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9.10 9.1 0
Using Usi ng DIGI DIGITAL TAL CTRL CTRL I/O I/O (/R1 (/R1 Opti Option) on)
Sweep clock output The is a data-update clock pulse that is output during sequencing, sweeping, or modulation. Use this output as a latch value for control address-input timing. Note that this output is the clock signal from Channel 1. If you switch off CHANNEL SYNC (in the UTILITY menu’s SYNCHRO window), the two channels may lose sync. Refer to Section 101 for information about the CHANNEL SYNC function.
Marker output You can output markers separately for each channel. Marker output varies according to the current waveform output type (sweep, modulated, or sequence), as follows. • Duri During ng swe sweep ep out outpu putt (a) Sweeps (other than arbitrary-waveform sweeps): 1-bit values (0 or 1); equal to the sweepmarker settings (b) Arbitrary-waveform sweeps: 3-bit values (0 to 7), 7), as set within the arbitrary waveform For information about setting up 3-bit markers, refer to page 8-6 and to the Note on page 83.
• During During modula modulated ted output output If modulation is by arbitrary waveform, the waveform’s 3-bit (0 to 7) marker values are output.
• During During sequen sequenced ced output output The 3-bit markers (values from 0 to 7) set within the sequence data are output. Refer to page 71 for information.
Event output Applies during output of arbitrary waveforms. You can register 3-bit event values (range 0 to 7) within these waveforms; these values will then be output as the waveforms are output. Event values can be output separately for each channel. The event setup procedure is the same as that for setting up 3-bit sweep-marker data; refer to page 8-6 and to the Note on page 8-3.
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10.1 Synchronizing Phases of Two Channels (FG220/ FG320 only) Procedure
1. Press [UTIL] key to call the UTILITY menu. 2. Press the {SYNCHRO} button to call the SYNCHRO setup window.
Call the SYNCHRO setup window.
• To maintain phase synchronization between the two channels: 3. Press {ON} button.
• To select continuous waveform output: 3. Press {OFF} button. The {OFF} button will not appear if OPERATION SYNC is currently set to either master or slave. You can press the {NORMAL} button to return the FG to normal mode, so that the {OFF} button appears.
Press to hold phase sync across channels.
Press to select continuous waveform output.
Explanation You use the CHANNEL SYNC setting to determine whether or not phase is resynchronized when the frequency at either channel is changed. If you select to maintain sync, both channels will interrupt waveform output briefly and restart from matched phase. If you select continuous output, output remains continuous at both channels, with no phase resync.
• If sync is maintained (CHANNEL SYNC = ON)
• If output is continuous (CHANNEL SYNC = OFF)
CH1 output CH2 output Change in CH1 frequency Change in CH2 frequency
10
CH1 output CH2 output Change in CH1 frequency Change in CH2 frequency
If working with continuous output, you can resync phases across channels at any time by pressing the {PHASE SYNC} button in the MAIN OUTPUT SETUP screen’s OUTPUT window. (Go to the MAIN OUTPUT SETUP screen, press {OUTPUT} button, then press {PHASE SYNC} button). But note that {PHASE SYNC} button may not work if you are using different output modes on each channel (or on interconnected FGs).
Synchronize phases
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O t h e r O p e r a t i o n s
10.2 Formatting Floppy Disks (FG310/FG320 only) Procedure 1. Insert the floppy disk to be formatted into the disk drive. 2. Press [UTIL] key to call the UTILITY menu. 3. Press {FLOPPY} button to call the FLOPPY (format/autoload) window.
Call the FLOPPY format/ autoload window.
4. Press {FORMAT} button to call the FDD/FORMAT window.
Call the FDD/FORMAT window.
5. Select the format type. 6. Press {EXEC} button to begin the format.
Abort formatting; return to FLOPPY window.
Start the format.
Select the format type.
Explanation Floppy-disk formats The FG supports the following 3.5" floppy disk formats. • 2HD: 1.2MB or 1.44MB MS-DOS format • 2DD: 640KB or 720KB MS-DOS format
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10.2
Formatting Floppy Disks (FG310/FG320 only)
Inserting a floppy disk into the drive Insert the disk with the label facing up. Push in until the eject button pops out.
Access lamp
Eject button
Removing a floppy disk from the drive First make sure that the access lamp is off. Then press the eject button.
Caution • Never eject a floppy disk while the access lamp is lit. Removing a disk while access is in progress may damage the drive heads or destroy disk data.
Automatic directory creation The FG automatically sets up the following three directories on the disk at time of format. • FG_WAVE For storage of arbitrary-waveform data (binary) • SEQUENCE For storage of sequence data • TEXT For storage of arbitrary-waveform text data
Disk handling For details about general floppy-disk handling, refer to instructions included with your disks.
10 O t h e r O p e r a t i o n s
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10-3
10.3 Floppy-Disk Autoload, Load, and Save (FG310/ FG320 only) Procedure To save current settings to disk: 1. Insert the floppy disk into the drive. 2. Press [UTIL] key to call the UTILITY menu. 3. Press {FLOPPY} button to call the FLOPPY window.
Call the FLOPPY format/ autoload window.
4. Press {AUTOLOAD} button to call the AUTOLOAD window.
Call the AUTOLOAD window.
5. Press {UPDATE} button to save your current settings to disk. The data will overwrite (update) previous settings stored on the disk.
Cancel and return to the FLOPPY window.
Load data from floppy disk.
Save current settings to disk.
Autoloading from disk (power-on load) Insert the floppy disk with the settings you want to load into the drive before switching on the power. The FG will automatically load the stored data when power comes on.
Loading after power-on Follow Procedure Steps 1 to 4 above, then press the {LOAD} button in the AUTOLOAD window.
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10.3 Floppy-Disk Autoload, Load, and Save (FG310/FG320 only)
Explanation Targeted parameters When you execute an autoload, load, or save, the FG will load or save all parameter settings (with the exception of settings made under the CONFIGURATION window), all arbitrary-waveform data (both text and non-text), and all sequence data. Note See page 10-2 for details on how to insert and format floppy disks.
10 O t h e r O p e r a t i o n s
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10.4 Saving/Recalling Output Settings (to/from internal memory) Procedure 1. Press [UTIL] key to call the UTILITY menu. 2. Press {STORE/RECALL} button to call the STORE/RECALL window. Call the STORE/RECALL window.
3. Press the “Memory Number” corresponding to the memory location to which you want store, or from which you want to recall, your output settings. (You can also select by pressing the corresponding key on the keypad.) 4. Press {STORE} button to store settings to the selected memory location, or press {RECALL} button to recall settings from that location.
Return to the UTILITY menu.
③Select location for storing
or recalling.
④Recall output settings. ④Save output settings.
Explanation Memory locations This operation saves current output settings into a predesignated area of internal memory, or restores settings from any of these areas. Memory areas are identified by number (0 to 9). You can use this feature to store up to 10 different sets of output settings at any one time.
Targeted parameters This operation stores or recalls all parameter settings for both channels, with the following exceptions: • Sequence data; sequence ON/OFF setting. • Arbitrary waveform data (text and nontext) • Parameters located under the CONFIGURATION window Note • If you recall from a memory area to which you have not yet stored anything, the FG will set all parameters to their defaults. (See page 10-9 for a listing of default values.) • Initialization (as described on page 10-9) does not affect the content of stored settings. • Sequence output automatically switches to OFF when you execute a recall.
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10.5 Simultaneous Two-Channel Setting (FG220/ FG320 only) The “dual setting” feature makes it possible to enter parameter settings for both channels at the same time. You can use this feature with any or all of the output-waveform parameters (frequency, amplitude, phase, offset, and duty), as well as with sweep time.
Procedure 1. Press [UTIL] key to call the UTILITY menu. 2. Press {CONFIG} button to call the CONFIGURATION window. Call the CONFIGURATION window.
3. Press the square buttons in the DUAL SETTING area to select parameters for dual setting. When you select a parameter, the current Channel 1 setting is immediately copied to Channel 2.
Return to the UTILITY menu.
Select parameters for dual feature. □ : Dual-feature OFF ■ : Dual-feature ON
Explanation Parameters
10
You can select dual-mode setting for any or all of the following parameters. • Frequency • Amplitude • Phase • Offset voltage • Duty cycle • Sweep time
Display The FG displays the DUAL indicator to inform you that the setting you are entering will apply to both channels.
DUAL indicator
Note Your dual-feature setup remains in effect even if switch power OFF/ON or initialize as described on page 10-9.
IM 706111-01E
10-7
O t h e r O p e r a t i o n s
10.6 Copying Output Settings Across Channels (FG220/FG320 only) Procedure 1. Press [UTIL] key to call the UTILITY menu. 2. Press {COPY} button to call the COPY window. Call the COPY window.
3. Select either {CH1 -> CH2} or {CH2 -> CH1}. 4. Press {EXEC} button to execute the copy. Select the copy direction.
Return to the UTILITY menu.
Execute the copy.
Explanation Direction selection Select {CH1 -> CH2} if you want to copy settings from Channel 1 to Channel 2. Select {CH2 -> CH1} to copy settings from Channel 2 into Channel 1.
Targeted parameters The following settings are not copied: • Arbitrary waveform data (text, nontext) • Parameters located under the CONFIGURATION window All other values, including sequence data and sequence ON/OFF, are copied. Note Following the copy, the FG will set the channel selection to the destination channel.
10-8
IM 706111-01E
10.7 Initializing the Output Settings Procedure 1. Press [UTIL] key to call the UTILITY menu. 2. Press {INIT} button to call the INITIALIZE window. Call the INITIALIZE window.
3. Press {EXEC} button to initialize settings. If you do not want to initialize, press {CANCEL} button to return to the UTILITY menu.
Return to the UTILITY menu.
Initialize the output settings.
Cancel and return to UTILITY menu.
Explanation Targeted parameters This operation initializes all parameters other than the following:
10
• Sequence data • Arbitrary waveform data (text, nontext) • Parameters located under the CONFIGURATION window
Initial (default) values WAVE screen SWEEP screen MODULATION screen M O D E ：C O N T S .M O D E ：R E P E A T M .T Y P E ：A M FU N C：SIN E S.TY PE：LIN M .FU N C：SIN E O U TPU T：1/1 S.ITE M ：FR EQ M O D FR EQ ：100H z F R E Q ：1kH z S T A R T F R E Q ：1kH z D E P T H ：50％ PH A SE：0deg STO P：10kH z CA RR IER A M PL：2V pp A M PL ：2V pp ST A R T M A R K E R ：1kH z C O N TR O L：N O RM A L * O FFSET：0V STO P M A R K ER ：5kH z SW E E P T IM E：1s SW EE P R A TIO ：100％ H O LD ：O FF SW E EP ：O FF
IM 706111-01E
UTILITY menu O PE SY N C：N O RM A L CH SY N C：O FF(FG 210/FG 310) ：O N (FG 220/FG 320) T R IG S L O P E ：↑ SU M /V CA ：O FF M O D U L A T E：O FF O PT IO N *Applies only if the optional externalsweep control feature is installed.
10-9
O t h e r O p e r a t i o n s
10.8 Adjusting Contrast; Switching Button Sound ON/OFF Procedure 1. Press [UTIL] key to call the UTILITY menu. 2. Press {CONFIG} button to call the CONFIGURATION window. Call the CONFIGURATION window.
To adjust the screen contrast: 3. Press {CNTRST} button, then turn the rotary knob to adjust.
To switch the button sound on or off: 3. Press the {BEEP ON/OFF} button to select ON or OFF. To adjust screen contrast, press here and then rotate the dial.
Return to the UTILITY menu.
Switch button sound ON or OFF.
Explanation Adjusting the screen contrast Screen contrast can be set to any one of 31 levels (0 to 30). Use the rotary knob to adjust.
Switching button sound ON or OFF When setting is ON, the FG beeps each time a soft button is pressed. Note Settings made within the CONFIGURATION window remain in effect even if you switch power OFF/ON or initialize the FG as described on page 10-9.
10-10
IM 706111-01E
10.9 Setting the Date and Time (FG310/FG320 only) Procedure 1. Press [UTIL] key to call the UTILITY window. 2. Press {CONFIG} button to call the CONFIGURATION window. Call the CONFIGURATION window.
3. Press {DATE/TIME} button to call the DATE/TIME window. Call the DATE/TIME window.
4. Press the soft button corresponding to the value you want to change (year, month, day, hour, or minute), then turn the rotary knob to change the setting. 5. Press {EXEC} button to register the new setting(s). Changes are not effective until registered. Settings that have not yet been registered are shown in reverse video.
10 Return to the CONFIGURATION window.
Select the item you want to change, then set the value by turning the dial. Register new settings
Explanation Setting Range You can set to any date between January 1, 1980 and December 31, 2079. The FG will correctly reflect leap years over this period.
IM 706111-01E
10-11
O t h e r O p e r a t i o n s
11.1 Error Messages: Causes and Corrections The FG uses three types of messages, as follows.
• Error messages The FG displays an error message to indicate that you have attempted an impossible operation or that the system is an abnormal state.
• Warning messages The FG generates a warning message to inform you of an inappropriate operation that requires attention.
• Status message The FG displays this type of message in the lower part of the LCD to indicate the current status. For example: “AM MODULATING!”. This section lists the system’s error and warning messages and describes appropriate countermeasures. This section does not include communications-related error messages; for information about communications errors, refer to the FG200/FG300 GP-IB Interface User’s Manual (IM706111-12E).
Error Messages All error messages (with the exception of communications-related messages) appear in the center of the LCD. (You can view communications-related error message, along with warnings, from the ERROR LOG window; refer to the next page.) No.
Message
Meaning/Action
602
No disk inserted. Please insert a disk.
604 605 606 609
Floppy disk isn’t formatted. Please format the disk. File not found. Select the proper file. Disk is write-protected. Set the disk switch to OFF. Same file already exists. Save under a different name.
610 612 6 15 618
Invalid file name. Please check file name. Disk is full. Please use new disk. Dis k f or mat fa il ure . P le as e r et ry fo rm at tin g. Cannot find ‘.HDR’ file. Put HDR file in WVF directory.
619
626
Cannot find ‘.INF’ file. Put INF file in WDT directory. File access failure. Invalid data format. Please check this file. Invalid ‘AREA’ definition. Please check this file. Invalid data in this file. Please check data in line xxx. Invalid information in ‘.HDR’. Please check symbol ‘xxx’. Invalid information in ‘.INF’. Please check file ‘.INF’. Invalid operation.
906
Fan stopped. Turn OFF the power immediately.
620 621 622 623 624 625
See page...
There is no floppy disk in the disk drive. Insert a disk into the drive. Floppy disk must be formatted. The selected file cannot be found. Check the filename. Set floppy disk’s write-protect switch to OFF. File with same name already exists. Save the file under a different name. The filename is invalid. Input a proper filename. Insufficient space on disk. Use a different disk. Fo rm at ti ng was un su cce ssf ul. Tr y f orm att in g th e di sk ag ain . Cannot find HDR information file (file with “.HDR” extension). Please put file into same directory as “.WVF” files. Cannot find INF information file (file with “.INF” extension). Please put file into same directory as “.WDT” files. Error occurred during file access. File may be corrupted. File format is abnormal. Check the file. Error in AREA definition. Check the file. File contains bad data. Check line xxx in file. Error in HDR file (file with “.HDR” extension). Check the definition of symbol xxx. Error in INF file (file with “.INF” extension). Check the file content. Invalid operation. May have attempted to change sequence settings while sequence was ON, or to set trigger source to “INT” while output mode was other than “TRIG”. The cooling fan has stopped. Switch the power off immediately.
10-3 10-2 – – – 7-4, 8-8 – 1 0- 2 –
– – – – 7-5, 8-7 –
11
–
I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d
4-9
–
See next page for warning messages.
IM 706111-01E
11-1
11.1
Error Messages: Causes and Corrections
Warning Messages The FG will display a warning indicator the upper right part of the screen to indicate that a warning condition has occurred. Warning indicator
When you see this indicator, go to the UTILITY menu and press {ERROR LOG} button. The FG responds by displaying a list of warnings and uncleared communications-related error messages. If the listing is too large to fit on the screen, you can scroll through it by turning the rotary knob. Return to the UTILITY menu. Clear communications-related error messages. (Does not affect warning messages.)
No. Message
Meaning/Action
001 0 02
CHx Frequency overrange. C Hx Vo lta ge ov err an ge.
003
CHx AM overrange.
004
CHx FM overrange.
005
CHx PWM overrange.
006
CHx OM overrange.
007
CHx SUM setting conflict. CHx VCA setting conflict.
Channel’s frequency setting is too high. Check the setting. C han ne l’ s v olt ag e set ti ng is ou t o f ra ng e. Ch ec k th e a mp lit ud e a nd of fse t v olt ag e settings. Channel’s AM-modulated amplitude is out of range. Check the carrier frequency and the modulation depth. Channel’s FM-modulated frequency is out of range. Check the carrier frequency and the maximum deviation. Channel’s PWM-modulated duty cycle setting is out of range. Check the carrier’s duty cycle and the maximum deviation. Channel’s offset-modulated offset voltage is out of range. Check the carrier offset and the maximum deviation. Cannot use SUM IN offset in combination with offset sweep, offset modulation, or sequence output. Switch off Channel x’s SUM IN. Cannot use external amplitude control (VCA IN) together with amplitude sweep, AM modulation, or sequence output. Switch off Channel x’s VCA IN.
008
11-2
See page... 4-3 4 -4 4-4 6-3 6-3 6-3 9-4 9-5
IM 706111-01E
11.2 Troubleshooting • Refer to Section 11.1 for information about how to respond to error messages. • If the information on this page does not solve the problem, or if you FG requires service for some other reason. Please contact one of the Yokogawa representatives listed on the back cover for assistance. Problem
Possible causes
Corrections
Unit does not turn on.
The power source does not comply with the FG’s power ratings.
Use the correct power source.
3-4
The circuit breaker is OFF.
Determine why the circuit breaker switched OFF. If the FG seems normal, switch the breaker back on.
11-4
The contrast is too dark.
Adjust the contrast.
10-10
The screen is too cold.
Ambient temperature must be at least 5°C.
–
Screen image is distorted.
System is malfunctioning.
Switch power OFF/ON.
–
Keys do not work.
The FG is set to remote mode.
Set the FG to local mode.
*
FG does not output a waveform.
Waveform output is not switched ON. The SUM/VCA settings are incorrect. The OPER SYNC settings are incorrect.
Switch waveform output ON. Correct the settings. Correct the settings.
4-8 9-4, 9-5 9-10
Output waveform is not correct.
The FG is not fully warmed up.
Allow 30 minutes for warm-up following power-on.
–
Output parameters are incorrectly set.
Correct the settings.
Chapter 4
The disk is not formatted.
New disks must be formatted before use.
10-2
The floppy disk is not correctly inserted.
Push disk into drive until eject button pops out all the way.
10-3
T he f lo pp y d isk is w ri te -p ro tec te d.
S et t he d is k’ s w ri te -p ro tec t t ab to en ab le writing.
–
The floppy disk is full.
Delete unnecessary files, or use a new disk.
–
The floppy disk is not correctly inserted.
Push disk into drive until eject button pops out all the way.
10-3
Screen is blank.
Cannot save data to floppy disk.
Cannot load data from floppy disk.
See page...
*Refer to the GP-IB Interface User’s Manual.
11 I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d IM 706111-01E
11-3
11.3 Running Self-Tests Disconnect all connector cables from the rear panel before beginning self-test execution.
Procedure 1. Press [UTIL] key to call the UTILITY menu, then press {SELF TEST} button to call the SELF TEST window.
Return to the UTILITY menu.
Testing the digital and analog circuits: 2. Press {SELF TEST} button, then press {EXEC} button to start the test. The FG begins testing its circuitry, display the results of each test in turn. During testing the screen displays the message “SELFTEST EXECUTING”. When testing is finished, the message changes to “SELFTEST EXECUTED”, and the {ESC} button appears. Make sure that all items receive a “PASS”. Absence of a “PASS” result indicates a problem.
Return to the SELF TEST window.
Testing the keys and the rotary knob: 2. Press {KEY TEST} button, then press {EXEC} button to start the test. 3. The FG displays an image of the front panel, as shown below. 4. Press each key and confirm that the corresponding key icon on the screen turns to reverse video. Rotate the rotary knob and confirm that the rotary knob icon on screen also rotates.
Return to the SELF TEST window.
11-4
IM 706111-01E
11.3 Running Self-Tests Testing the touch panel: 2. Press {TOUCH KEYTEST} button, then press {EXEC} button to start the test. 3. Press each of the buttons displayed on the screen; confirm that each pressed button turns to reverse video when pressed. Also be sure that the FG beeps when you press each button. To return to the SELF TEST window, press any key on the keypad.
Testing the display: 2. Press {DISPLAY TEST} button, then press {EXEC} button to start the test. 3. The display color should change to solid blue. Confirm that the display includes no white points. To return to the SELF TEST window, press any key on the keypad.
Explanation If a test reveals a problem... The FG may be damaged. Please contact one of the Yokogawa representatives listed on the back cover.
If the Digital/Analog test returns one of these warnings... If the Digital/Analog test returns the “LOW BATTERY” warning, it is time to change the lithium battery. If the test returns the “CALIBRATION DATA LOST” warning, the FG’s internal calibration data may have been lost, so that recalibration may be necessary. Battery replacement and recalibration must be performed by a qualified service engineer; contact one of the Yokogawa representatives listed on the back cover for assistance.
Warning messages
IM 706111-01E
11-5
11 I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d
11.4 Running performance tests About performance tests... These tests are designed to ensure that your FG is performing correctly. If test results do not meet the specified performance criteria, contact a Yokogawa representative (see list on back cover) to request adjustment or repair.
Required equipment Digital multimeter Thermal converter Digital oscilloscope Spectrum analyzer Time-interval analyzer 50Ω feedthrough terminator Attenuator (–6dB) Attenuator (–20dB) Low-pass filter
Keithley 2001 or equivalent Ballantine 1395A-3-09 or equivalent Yokogawa Electric DL1300 or equivalent HP 3588A or equivalent Yokogawa Electric TA1100 (704020) or equivalent Hirose MR201 (0.5W) or equivalent Hirose AT506 (2W) or equivalent Hirose AT520 (2W) or equivalent 10kΩ ±1%, 1µF±10% 10kΩ 1μF
Coaxial cable
50Ω BNC, 1m
Test environment and operating conditions • Warm-up time: The TA1100 must be warmed up for at least two days. All other equipment (including the FG) should be allowed at least 30 minutes for warm-up. • Ambient temperature: 23°C±2°C • Ambient humidity: 50%±10% RH • Test start: Do not start or adjust until warm-up period is completed. • Connection cable: Use coaxial cable to connect the FG to the various measuring devices.
Modulation precision Required equipment Digital multimeter
Test procedure 1. Set the FG and the digital multimeter as indicated below. • If using a two-channel FG (the FG220 or FG320), be sure to measure modulation precision for both channels. • FG settings • Digital-multimeter settings Output mode: CONT AC-voltage measurement Output waveform: Sine wave AC couple Output frequency: 1kHz Auto-range Phase: 0deg Offset voltage: 0V Output attenuator: 1/1 2. Connect the FG’s OUTPUT terminal to the digital multimeter and take the required readings.
Performance criterion ±(Setting × 0.8% + 14mVrms) Voltage setting 7.071Vrms 3.535Vrms 1.768Vrms 353mVrms 0mVrms –353mVrms –1.768Vrms –3.535Vrms –7.071Vrms
11-6
Required for pass 7.071Vrms ± 70mVrms 3.535Vrms ± 42mVrms 1.768Vrms ± 28mVrms 353mVrms ± 16mVrms 0mVrms ± 14mVrms –353mVrms ± 16mVrms –1.768Vrms ± 28mVrms –3.535Vrms ± 42mVrms –7.071Vrms ± 70mVrms
IM 706111-01E
11.4
Running performance tests
Output impedance Required equipment Digital multimeter 50Ω feedthrough terminator
Test procedure 1. Use the digital multimeter to measure the resistances of both the cable (Rcable) and the 50Ω feedthrough terminator. • If using a two-channel FG (the FG220 or FG320), be sure perform measurements for both channels. 2. Set up the FG and the digital multimeter as indicated below. • FG settings
• Digital-multimeter settings
Output mode:
CONT
AC-voltage measurement
Output waveform:
Sine wave
AC couple
Output frequency:
1kHz
Offset voltage:
0V
3. Connect the FG’s OUTPUT terminal to the digital multimeter and measure the output voltage (“VOUT_H”). 4. Disconnect the cable from the OUTPUT terminal. Connect the 50Ω feedthrough terminator to the OUTPUT terminal, then connect the digital multimeter to the feedthrough terminator and measure the output voltage again (“VOUT_50”). • Calculate the output impedance (Rout) as follows: Rout = (VOUT_H/Vout_50-1) × 50 - Rcable
Performance criterion 50Ω±1% Output attenuator
Criterion
1/1
50Ω±0.5Ω
1/10
50Ω±0.5Ω
1/100
50Ω±0.5Ω
Output-attenuator precision (high impedance load) Required equipment Digital multimeter
Test procedure 1. Set the FG and the digital multimeter as indicated below. • If using a two-channel FG (the FG220 or FG320), be sure to measure the attenuator precision for both channels. • FG settings
• Digital-multimeter settings
Output mode:
Direct Current (DC)
DC-voltage measurement
Output voltage:
10V
Auto-range
11 I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d
2. Connect the FG’s OUTPUT terminal to the digital multimeter input and take the required readings.
Performance criterion ± 0.2%
IM 706111-01E
Attenuator setting
Criterion
1/1
(Output voltage setting)
1/10
(Output voltage setting)/10 ± 0.2%
1/100
(Output voltage setting)/100 ± 0.2%
11-7
11.4
Running performance tests
DC-output precision (DC-Output mode; high impedance load) Required equipment Digital multimeter
Test procedure 1. Set the FG and the digital multimeter as indicated below. • If using a two-channel FG (the FG220 or FG320), perform measurements for both channels. • FG settings
• Digital-multimeter settings
Output mode:
Direct Current (DC)
DC-voltage measurement
Output attenuator:
1/1
Auto-range
2. Connect the FG’s OUTPUT terminal to the digital multimeter input and take the required readings.
Performance criterion ±(Setting × 0.3% + 20mV) Voltage setting
Criterion
+10V
+10V±50mV
+5V
+5±35mV
+1V
+1V±23mV
0V
0V±20mV
–1V
–1V±23mV
–5V
–5V±35mV
–10V
–10V±50mV
(DC+AC) offset-voltage precision (high impedance load) Required equipment Digital multimeter Low-pass filter
Test procedure 1. Set the FG and the digital multimeter as indicated below. • If using a two-channel FG (the FG220 or FG320), perform measurements for both channels. • FG settings
• Digital-multimeter settings
Output mode:
CONT
DC-voltage measurement
Output waveform:
Sine wave
Auto-range
Output frequency:
1kHz
Output attenuator:
1/1
2. Connect the FG’s OUTPUT terminal to the digital multimeter input via the low-pass filter, and take the required readings.
Performance criterion ±([Set offset × 0.3%] + [Set amplitude × 0.5%] + 40mV)
11-8
Set amplitude
Set offset
Criterion
20Vpp
0V
0V±140mV
10Vpp
+5V
+5V±105mV
0Vpp
+0V
0V±40mV
10Vpp
–5V
–5V±105mV
20Vpp
0V
0V±140mV
IM 706111-01E
11.4
Running performance tests
Amplitude and frequency precision of output sine, square, triangular, and pulse waves (50Ω load) Required equipment Digital multimeter Thermal converter 50Ω feedthrough terminator Attenuator (–6dB)
Test procedure 1. Set the FG and the digital multimeter as indicated below. • If using a two-channel FG (the FG220 or FG320), perform measurements for both channels. • FG settings
• Digital-multimeter settings
Output mode:
CONT
AC-voltage measurement
Phase:
0deg
AC couple
Amplitude:
20Vpp
Auto-range
Offset voltage:
0V
Output attenuator:
1/1
2. Connect the FG output terminal to the digital multimeter via the attenuator and 50Ω feedthrough terminator, and take the required readings. • Measure frequency-induced AC voltage fluctuation rate, taking AC voltage at 1kHz as the base. • Measurements for 1MHz, 10MHz, and 15MHz sine-wave output are to be made by thermal converter connected to the attenuator.
Performance criteria • Sine wave (as measured by digital multimeter) Frequency setting
Criterion
1kHz
(base)
100Hz
± 0.1dB
10kHz
± 0.1dB
100kHz
± 0.1dB
• Sine wave (as measured by thermal converter) Frequency setting
Criterion
1kHz
(base)
1MHz
± 0.2dB
10MHz
± 0.5dB
15MHz
± 1.0dB
• Square wave (as measured by digital multimeter) Frequency setting
Criterion
1kHz
(base)
100Hz
± 2%
10kHz
± 2%
11 I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d
• Triangular wave (50% symmetry) (as measured by digital multimeter) Frequency setting
Criterion
1kHz
(base)
100Hz
± 3%
10kHz
± 3%
• Pulse wave (50% duty cycle) (as measured by digital multimeter)
IM 706111-01E
Frequency setting
Criterion
1kHz
(base)
100Hz
± 2%
10kHz
± 2%
11-9
11.4
Running performance tests
Sine-wave purity (50Ω load) Harmonic distortion, and distortion ratio • Required equipment Spectrum analyzer Attenuator (–20dB)
• Test procedure 1. Set the FG and the spectrum analyzer as indicated below. • If using a two-channel FG (the FG220 or FG320), perform measurements for both channels. • FG settings
• Spectrum analyzer settings
Output mode:
CONT
Output waveform: Sine wave Phase:
0deg
Amplitude:
20Vpp
Offset voltage:
0V
Range:
±10dBm
Center frequency:
1, 2, 3, 4, and 5 times FG frequency setting
Output attenuator: 1/1 Frequency setting
RES BW
Frequency span
100kHz
36Hz
1kHz
1MHz
290Hz
10kHz
10MHz
2300Hz
100kHz
15MHz
2300Hz
100kHz
2. Connect the FG’s OUTPUT terminal to the spectrum analyzer through the attenuator (– 20dB).
• Performance criteria • Harmonic distortion Measure the maximum levels for second-, third-, fourth-, and fifth-order harmonics. Frequency
Criterion
100kHz
Not above –55dBc
1MHz
Not above –45dBc
10MHz
Not above –35dBc
15MHz
Not above –25dBc
• Harmonic distortion ratio Calculate the harmonic distortion ratio using the following formula: e2
(10 ) 20
Harmonic = distortion ratio
2
e3
+
(10 ) 20
11-10
Criterion
100kHz
Not above 0.3%
+
(10 ) 20
e5
2
+
(10 ) 2 20
×
e1
10
Frequency
e4
2
100%
20
IM 706111-01E
11.4
Running performance tests
Spurious level • Required equipment Spectrum analyzer Attenuator (–20dB)
• Test procedure 1. Set the FG and the spectrum analyzer as indicated below. • If using a two-channel FG (the FG220 or FG320), measure the spurious levels for both channels. • FG settings
• Spectrum analyzer settings
Output mode:
CONT
Start frequency: 1kHz
Output waveform: Sine wave
Stop frequency: 100MHz
Frequency:
100kHz
RES BW:
Phase:
0deg
Amplitude:
20Vpp
Offset voltage:
0V
1200Hz
Output attenuator: 1/1 2. Connect the FG’s OUTPUT terminal to the spectrum analyzer through the attenuator (– 20dB). 3. Measure the maximum spurious output levels at frequencies from 1kHz to 100MHz. (Do not make measurements at base frequency and harmonic frequencies).
• Performance criterion Frequency
Criterion
100kHz
Not above –55dB
Channel crosstalk (Isolation, 50Ω load) (FG220/FG320 only) Required equipment Spectrum analyzer Attenuator (–20dB) 50Ω feedthrough terminator
Test procedure 1. Set the FG220/FG320 and the spectrum analyzer as indicated below. • FG settings
• Spectrum analyzer settings CH1
CH2
Range:
Output mode
CONT
CONT
Frequency span: 1kHz
Output frequency
15MHz 10MHz
Amplitude
20Vpp
20Vpp
Phase
0deg
0deg
Offset voltage
0V
0V
Output attenuator
1/1
1/1
RES BW:
+10dBm 36Hz
11
2. Connect the FG’s CH2 OUTPUT terminal to the spectrum analyzer via the attenuator (–20dB). 3. Connect the 50Ω feedthrough terminator to the FG’s CH1 OUTPUT terminal. 4. Set the spectrum analyzer to “CF 10MHz” and measure the base wave signal level. 5. Set the spectrum analyzer to “CF 15MHz” and measure the crosstalk from the CH1 OUTPUT to the CH2 OUTPUT. The difference between this measurement and the previous measurement gives the channel-to-channel crosstalk.
Performance criterion Not above –65dB
IM 706111-01E
11-11
I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d
11.4
Running performance tests
Pulse characteristics (50 Ω load) Square/Pulse rise time and overshoot • Required equipment Digital oscilloscope 50Ω feedthrough terminator
• Test procedure 1. Set the FG and the digital oscilloscope as indicated below. • If using a two-channel FG (the FG220 or FG320), check rise times and overshoot levels for both channels. • FG settings
• Digital-oscilloscope settings
Output mode:
CONT
V/div:
2V/div
Output waveform: Square/pulse
Time/div: 50ns/div
Output frequency: 100kHz
Measure: AUTO, rise time, overshoot
Amplitude:
20Vpp
Offset voltage:
0V
Output attenuator: 1/1 2. Connect the FG’s OUTPUT terminal to the digital oscilloscope via the 50Ω feedthrough terminator, and take the required readings.
Performance criteria • Rise time • For square wave
• For pulse wave (50% duty cycle)
Not above 30ns (10% - 90%)
Not above 100ns
• Overshoot • For square wave
• For pulse wave (50% duty cycle)
Max: Output pp value + 5%
Max: Output pp value + 5%
Precision of pulse-wave duty cycle setting • Required equipment Time-interval analyzer
• Test procedure 1. Set the FG and the time-interval analyzer as indicated below. • If you are testing the FG220/FG320, perform measurements for both channels. • FG settings
• Settings for time-internal analyzer
Output mode:
CONT
Function:
Pulse width measurement A high level
Output waveform: Pulse
Sample:
1
Output frequency: 10kHz
Input:
50Ω DC couple
Phase:
0deg
ATT:
off
Amplitude:
20Vpp
Trigger level: 0V
Offset voltage:
0V
Output attenuator: 1/1 2. Connect the FG’s OUTPUT terminal to the analyzer’s A input and make the measurement.
• Performance criterion
11-12
Waveform
Criteria
Pulse wave
50µs±0.2%
IM 706111-01E
11.4
Running performance tests
Frequency precision Required equipment Time-interval analyzer
Test procedure 1. Set the FG and the time-interval analyzer as indicated below. • If using a two-channel FG (the FG220 or FG320), measure the frequency precision for both channels. • FG settings
• Settings for time-interval analyzer
Output mode:
CONT
Function:
FREQ A
Output waveform:
Sine wave
Sample:
1
Output frequency:
10MHz
Gate:
INT 1sec
Phase:
0deg
Input:
50Ω AC couple
Amplitude:
20Vpp
ATT:
off
Offset voltage:
0V
Trigger level:
0V
Output attenuator:
1/1
2. Connect the FG’s OUTPUT terminal to the analyzer’s A input and make the measurement.
Criterion ±20ppm
10MHz±200Hz
11 I n T r s o p u e b c e l t i s o h n o o t i n g , M a i n t e n a n c e a n d IM 706111-01E
11-13
11.5 Location and Operation of the Circuit Breaker Location The FG’s internal circuitry is protected by a circuit breaker rather than a fuse. The following diagram shows the location of circuit breaker.
R
C
R
DIGITAL
C
CTRL
I/O
CIRCUIT TRIG IN/
SWP
GATE IN
HOLD IN
CH1 SYNC
OUT
CH1 MAKER
CH1 OUT
SWP
OUT
SUM IN/ VCA IN
BREAKER
SWP CTRL
IN
Circuit breaker TTL
TL
G P -I B
TL
TL
0V
10V
10V
I E EE 48 8
WARNING
100-240V 00-240V AC 50 60Hz 125VA 0 - 60Hz 125 VA MAX
TO AVOID ELECTRIC ELECTRICSHOCK, SHOCK, O AVOID PROTECTIVE CONDUCTOR N IN THE THE ROTECTIVE GROUNDING GROUNDING CONDUCTOR
ODEL MODEL
POWER CORD MUST MUST BE BE CONNECTED CONNECTED TO TOGROUND. GROUND. OWER CORD DO NOT REMOVE REMOVE COVERS. COVERS. O NOT REFER SERVICING TO TO QUALIFIED QUALIFIEDPERSONNEL PERSONNELONLY. ONLY. EFER SERVICING
U F FX SUFFIX
NO. Made n Japan
Operation The circuit breaker protects the FG from overcurrent due to excess load conditions. When such a condition occurs, the circuit breaker will trip, cutting off the power. The RESET button will pop out, exposing a white indicator. White indicator
Reset If the circuit breaker trips, wait at least one full minute before resetting. To reset, push the reset button back to its original position. If the overload condition continues, the circuit breaker’s no-reset function will activate, making it impossible to restore the button to its normal position.
Caution • Tripping of the circuit breaker usually indicates an abnormal condition within the FG’s internal circuitry. If the reset button does not return to its original position at the first or second press, do not continue trying. Contact one of the Yokogawa representatives listed on the back cover for advice.
11-14
IM 706111-01E
12.1 Performance Specifications The performance features described below apply when the FG is used in accordance with the general specifications given in Section 12.6.
Waveform Output Feature
Specification
Channels FG220/FG320: 2, FG210/FG310: 1 Standard output waveforms Sine, square (duty cycle = 50% fixed), triangular (variable symmetry), pulse (variable duty cycle) Arbitrary waveforms (FG310/FG320 only) Output amplitude resolution 12 bits Memory length 8192 points (Not all points generated if repeat cycle is 4.9kHz or above.) Frequency range Sine, square 1µHz to 15MHz Triangular, pulse 1µHz to 200kHz Arbitrary 1µHz to 200kHz Frequency resolution 1µHz or 9 digits Frequency accuracy ±20ppm Frequency stability ±20ppm (Ambient temperature: 5 to 40°C) Base clock 40.21071MHz
Output Characteristics Feature
Specification
Maximum output voltage*** ±10V (high-impedance load) Amplitude range*** ±20Vpp (1mVpp resolution) (Negative value denotes inverted waveform.) Amplitude accuracy*** ±(0.8% set value + 14mV) (for 1kHz sine wave) Amplitude frequency characteristics* Sine ±0.1dB ≦100kHz ≦1MHz ±0.2dB ±0.5dB ≦10MHz ≦15Mhz ±1dB Square/pulse (50% duty cycle) ±2% ≦10kHz Triangular (50% symmetry) ±3% ≦10kHz Offset-voltage range*** ±10V (1mV resolution) Offset-voltage accuracy*** ±(0.3% set offset + 0.5% set amplitude + 40mV) Output impedance 50Ω±1% (But OPEN if output is OFF.) Output range** ±10V (1mV resolution) DC-output accuracy*** ±(0.3% set value + 20mV) Output-attenuator settings 1/1, 1/10, 1/100 Output-attenuator accuracy*** ±0.2% Channel-to-channel crosstalk** (FG220/FG320 only) <–65dB * RMS measurement, based on 20Vpp amplitude, 0V offset, 50Ω load, 1KHz reference ** Crosstalk from CH1 to CH2, where CH1 = 15MHz sine wave, CH2 = 10MHz sine wave; 20Vpp amplitude, 0V offset, 50Ω load *** At high-impedance load
Sinewave Purity Feature
Specification
Harmonics* (Max. of 2nd to 5th-order harmonics) 100kHz <–55dBc 1MHz <–45dBc 10MHz <–35dBc 15MHz <–25dBc Harmonic distortion rate (RMS of 2nd to 5th-order harmonics) 100kHz <0.3% Spurious* (1kHz to 100MHz frequency range) 100kHz <–55dBc *
12 S p e c i f i c a t i o n s
As measured at 20Vpp amplitude, 0V offset, 50Ω load.
IM 706111-01E
12-1
12.1
Performance Specifications
Characteristics of Square, Pulse, and Triangular Waves Feature
Specification
Rise time* Square <30ns (10% to 90%) Pulse <100ns (10% to 90%) Overshoot* < (Output p-p value ±5%) Duty-cycle setting (pulse waves only) Range 0 to 100% (Resolution: 0.01% or 25ns) Time accuracy (≦10kHz) (1/set frequency)±0.2% Jitter 1 clock pulse Symmetry setting (triangular waves only) Range 0 to 100% (Resolution: 0.01% or 25ns) Jitter 1 clock pulse *
Measured at 20Vpp amplitude, 0V offset, 50Ω load.
Phase Feature
Specification
Setting range
–10000deg to +10000deg (0.01deg resolution)
Sweep Characteristics Feature
Specification
Sweep types Sweep time range Sweep ratio External sweep control Analog-input resolution
Linear, logarithmic, linear-step, log-step, arbitrary (FG310/FG320 only) 1ms to 10000s (Resolution: 10µs or 5 digits) 0 to 100% (Resolution: 0.01% or 1.6µs) Sampling frequency: 628.292kHz 12-bits
Modulation Characteristics Feature
Specification
C arrier wave
Sine, square (duty cycle = 50% fixed), triangular (variable symmetry), pulse (variable duty cycle), arbitrary waveform (on FG310/FG320 only). Conditions same as for waveform output under CONT mode.
Modulation types AM Depth setting DSB-SC AM FM Pe ak dev iat io n set ti ng Phase modulation Peak deviation setting Offset modulation Pe ak dev iat io n set ti ng PWM Pe ak dev iat io n set ti ng M od ula to r wa ve Modulator frequency
0% to 100% (Resolution: 0.01%)
0 Hz to 7.5 MHz (R eso lu tio n: 1µHz or 9 digits) 0deg to 360deg (Resolution: 0.01deg) 0 V to 10 V ( Re so lu ti on : 1 mV) 0 % to 50 % (R eso lut io n: 0. 01 %) Si ne, tr ia ng ula r ( va ri ab le sy mm et ry) , p ulse (v ar ia ble du ty cy cl e) , ar bit rar y wa ve fo rm (o n F G3 10 / FG320 only). 1mHz to 50kHz (Resolution: 1mHz)
Trigger Feature
Specification
Internal-trigger frequency setting Burst count setting
1mHz to 50kHz (Resolution: 1mHz) 1 to 65535 cycles (must be integer)
Synchronized Operation
12-2
Feature
Specification
Configuration
Can synchronize output of up to 8 interconnected FGs.
IM 706111-01E
12.2 Functional Specifications Feature Output operation Continuous (CONT)
Specification FG220/FG320: Continuous phase or channel/channel phase sync (selectable). FG210/FG310: Continuous phase only. FG ou tp ut s b urs t ( sp ec if ie d wh ole nu mb er of cy cle s) in re sp on se to tr ig ge r. External, internal, manual, GP-IB command FG outputs burst (whole number of cycles) while GATE is ENABLED. External, manual FG outputs DC voltage.
Tr igg er ed (TR IG ) Trigger source Gated (GATE) Gate source DC output (DC) Sweep REPEAT Continuous sweep SINGLE Single sweep at trigger SI NG LE & H OL D S in gle swe ep , f oll ow ed b y co nt in uo us o utp ut a t f in al swe ep v alu e Arbitrary waveforms (FG310/FG320 only) Applications Output waveform, sweep pattern, modulator wave Number available 8 In ter po la ti on me th od L ine ar, st ep , re la xed sp lin e, p eri od ic s plin e Phase setting Ap pli ca ti on s Sta rt/ sto p p hase f or T RI G an d GA TE m od e o per at io n. Al so , p ha se d if fe re nce b et wee n ch an nel s (FG220/FG320 only, during 2-channel operation) Storage of settings Store up to 10 sets of panel data for recall (non-volatile memory) Preset TTL Amplitude = 5V; offset = 2.5V (at high-impedance load) Waveform output ON/OFF Separate ON/OFF control for each channel Parameter copying (FG220/FG320 only) Copy parameter values from one channel to another (CH1→CH2, or CH2→CH1). 2-channel simultaneous setting (FG220/FG320 only) Changes to selected parameters apply to both channels.
12 S p e c i f i c a t i o n s
IM 706111-01E
12-3
12.3 Supplementary Input/Output Feature TRIG/GATE IN Input level Pulse width Edge detection
Specification TTL >200ns Trigger: Rising or falling (selectable) Gate: H-enable or L-enable (selectable) >1kΩ BNC
Input impedance Connector type SWP HOLD IN Input level TTL Pulse width >2µs Level detection H-enable Input impedance >1kΩ Connector type BNC CH1 SYNC OUT Output level TTL Output impedance Approx. 50Ω Connector type BNC CH1 MARKER OUT (CH1 sweep-marker output) Output level TTL Output impedance Approx. 50Ω Connector type BNC CH1 SWP OUT (CH1 sweep/modulation output) Output level ±10V Output impedance Approx. 50Ω Connector type BNC SUM IN/VCA IN (external offset/amplitude control) Input level ±10V Input impedance Approx. 20kΩ Connector type BNC SWP CTRL IN (analog sweep-control input) [external sweep-control option] Input level ±10V Input impedance Approx. 20kΩ Connector type BNC OPER SYNC IN (Synchronization input) Connector type Half-pitch 26-pin Amphenol OPER SYNC OUT (Synchronization output) Connector type Half-pitch 26-pin Amphenol DIGITAL CTRL I/O [external sweep-control option] Connector type 25-pin D-sub Sequence/sweep address input Bits 8 Level TTL Impedance >1kΩ Sweep clock output Frequency 628.292kHz Level TTL Impedance Approx. 100Ω Marker output Bits 3 per channel Level TTL Impedance Approx. 100Ω Event output Bits 3 per channel Level TTL Impedance Approx. 100Ω
12-4
IM 706111-01E
12.4 Display, Disk Drive, GP-IB Communication Interface Display Specifications Feature
Specification
Device Resolution Defects
Liquid crystal; resistance-film touch panel 320 × 240 dots < approx. 0.01% of pixels
Internal Floppy-Disk Drive (FG310/FG320 only) Feature
Specification
Type Drives Supported formats
For 3/5" floppy disk 1 MS-DOS 640KB/720KB/1.2MB/1.44MB
GP-IB Communication Interface Feature
Specification
E le ct ri ca l, m ec han ica l Functional Protocol Code Address
C on fo rm s to I EE E S t’ d 4 88 -1 97 8 (J IS C 190 1- 19 87 ) SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0 Conforms to IEEE St’d 488.2-1987 ISO (ASCII) Can be set from 0 to 30 (talker/listener)
12 S p e c i f i c a t i o n s
IM 706111-01E
12-5
12.5 General Specifications Feature
Specification
Optimal operating environment
Ambient temperature: 23°C±2°C. Ambient humidity: 50%±10%RH. Power source: 100V±1%. FG fully warmed up. 30 minutes
Warm-up time Operating environment Temperature 5°C to 40°C Humidity 20% to 80% RH to 29°C wet-bulb temp.; no condensation Storage environment Temperature –20°C to 60°C Humidity 20% to 80%RH Rated power supply 100VAC to 240VAC Permitted power-supply fluctuation 90VAC to 264VAC Rated power frequency 50Hz to 60Hz Permitted power-frequency fluctuation 48Hz to 63Hz Peak power consumption 125VA Withstand voltage (power to case) 1.5kVAC, 1 min. Insulation resistance (power to case) 500VDC, >10MΩ Signal ground All I/O connector grounds connected to case ground. Dimensions Approx. 213(W) × 132(H) × 350(D) mm (excluding projections) Weight Approx. 5kg (Main unit only) Cooling method Forced-air cooling Installation orientation Horizontal Battery backup Internal lithium battery backs up panel settings and time-of-day Included accessories Power cord, 2 rear-leg rubber mounts, floppy disk (with FG310/FG320 only), 1 user manual set
12-6
IM 706111-01E
12.6 Dimensions
Unit : mm
Rear View
13
213
19
350
27
2 3 1
1 2
Above values accurate to within ±3%.
12 S p e c i f i c a t i o n s
IM 706111-01E
12-7
Appendix 1 Setting Up for Arbitrary Sweep (Example) This Appendix shows how to set up an arbitrary waveform and then apply it as a sweep pattern on the currently selected output waveform. You first define the waveform, then select the sweep conditions. This example sets up a frequency sweep that goes from 1kHz to 10kHz, with a sweep time of 1 second.
1. Set up the area. Open the AREA DEFINE window. Set maximum X to 1s, minimum Y to 1.0E+3Hz, and maximum Y to 10.0E+3Hz.
2. Enter the waveform text data. Go to the TEXT EDIT window and enter significant points on the waveform. Be sure that all points are within the selected area: X values must be between 0s and 1s; Y values must be between 1.0E+3Hz and 10.0E+3Hz.
3. Select the interpolation method. Press {INTERPOLATE} button and select the interpolation method. The FG then generates the waveform accordingly.
4. Set the sweep conditions Go to the SWEEP SETUP screen to set the sweep conditions. Set the sweep item to FREQ, the sweep type to the arbitrary waveform you just defined, the minimum frequency to 1kHz, the maximum frequency to 10kHz, and the sweep time to 1s.
A p p e n d i x Appendix
Setup is now completed. You can now set sweep ON to begin sweep output. IM 706111-01E
App-1
Appendix 2 Logarithmic Sweeps on Negative Values If you set up a logarithmic sweep that uses a negative start and/or stop value, processing is as illustrated below.
• If start and stop values are both negative: Stop
Logarithms based on absolute values.
Start • If one value is negative and the other is positive: Stop
Minimum positive value Maximum negative value
0
Log sweep is implemented separately for negative and positive areas, with a jump and slope reversal at the 0 point.
Start
Similar processing applies in the case of log-step sweeps. But note that number of steps doubles if the sweep must cross the 0 boundary.
• If start and stop values are both negative:
Stop
Log steps based on absolute values.
Start • If one value is negative and the other is positive:
Stop
0
Start
App-2
Minimum positive value Maximum negative value
Log steps implemented separately for negative and positive areas, with a jump at the 0 point. Number of steps is doubled.
IM 706111-01E
Appendix 3 Floppy-Disk Sample Data (included with models FG310 and FG320 only) Disk format The supplied disk is in 2DD 720KB format.
Directories and files The disk includes the following. AUTOLOAD.SET : Autoload file README.DOC : Text file with information about disk content TEXT\ : Directory for waveform-definition text files FG_WAVE\ : Directory for waveform files SEQUENCE\ : Directory for sequence files OTHERS\ : Directory containing sample files created at other devices GPIBSMPL\ : Directory containing GP-IB sample programs
Explanations Please open and read the README.DOC file at a PC. For detailed explanations about the sample programs in the GPIBSMPL directory, refer to Chapter 5 of the GP-IB Interface User’s Manual (IM706111-12E).
About autoloaded sample files If you switch on the FG310/FG320 while the sample disk is inserted in the drive, the unit will automatically load the data described below.
Arbitrary waveforms The FG will load seven arbitrary waveforms, as follows.
• A1 Waveform created from text data and spline interpolation. Try this as an output waveform (go to the MAIN OUTPUT SETUP screen, press the {FUNC} button, then press {A1} button).
• A2 Created from text data and linear interpolation; intended for use as a sweep pattern.
• A3 Sine wave created from interpolated text-data points spaced at 10deg intervals. Try changing some of the points and re-interpolating.
• A4 Arbitrary waveform. Try using the normalization feature to expand the waveform vertically.
• A5 Arbitrary waveform. Try using the clipping feature to remove side areas and expand the central area horizontally.
• A6 Arbitrary waveform.
• A7 Acoustic waveform (bird sounds). Try this as your output waveform, with frequency set to about 1Hz. Play the output through a speaker to hear the sounds.
A p p e n d i x
• A8 Undefined. Try creating your own waveform; refer to Chapter 8 for details.
Sequence data Sample sequence data.
Appendix
Other settings Factory defaults for all parameters.
IM 706111-01E
App-3
Index Page
CENTER OFFSET ..................................................................... 5-5
* mark
............................................................................ 7-5, 8-9
CENTER PHASE ....................................................................... 5-4 Center/span values ................................. .............................. 1-8, 5-4
<>
................................................................................... 2-1
CH
.............................................2-1, Ch.4, Ch.5, Ch.6, Ch.7
#0 ~ #9
................................................................................. 10-6
CH1
................................................................................... 2-1
1/1
................................................................................... 4-8
CH1 -> CH2 ............................................................................. 10-8
1/10
................................................................................... 4-8
CH1 MARKER OUT .................................................1-13, 2-2, 9-7
1/100
................................................................................... 4-8
CH1 marker output ................................... .................. 1-13, 2-2, 9-7 CH1 output indicator .................................................................. 2-1 CH1 SWP OUT ................................. ......................... 1-13, 2-2, 9-9
A
Page
A1 to A8 ............................................................. 4-2, 5-2, 6-2, 8-1 Accessories ................................... ...................................... ............ 3 AM ..................................................................................... 1-9, 6-1 AMPL
............................................................................ 4-4, 5-3
Amplitude .................................. ...................................... .... 1-6, 4-4 Amplitude-control input .................................................... 1-13, 9-5 Amplitude modulation ................................. ........................ 1-9, 6-1 Amplitude sweep ................................. ................................ 1-6, 5-3 ANALOG ................................................................................. 9-13 ARB ...................................... ..................................... ........ 2-4, Ch.8 Arbitrary modulator ................................. ............................ 1-9, 6-2 Arbitrary sweep ................................................................... 1-7, 5-2 Arbitrary waveforms ........................................ 1-5, 1-12, 4-2, Ch.8 AREA DEFINE .......................................................................... 8-4 Arrow keys ................................................................................. 2-1 Attenuator ................................... .................................. 1-3, 1-6, 4-8 AUTO LOAD ........................................................................... 10-4 Autoload ........................................................................ 1-14, 10-4
CH1 sweep/modulation output .......................................... 1-13, 2-2 CH1 SYNC OUT ................................. ....................... 1-13, 2-2, 9-6 CH1-synchronous output ................................. ........... 1-13, 2-2, 9-6 CH1 waveform output terminal .................................................. 2-1 CH2
................................................................................... 2-1
CH2 -> CH1 ............................................................................. 10-8 CH2 output indicator .................................................................. 2-1 CH2 waveform output terminal .................................................. 2-1 Channel phase sync ........................................................... 1-6, 10-1 CHANNEL SYNC .......................................................... 9-11, 10-1 Channel-to-channel copy .................................. ............... 1-14, 10-8 CIRCUIT BREAKER ..................................................... 2-2, 11-14 Circuit breaker ................................................................... 2-2, 11-4 CLEAR ................................................................................. 11-2 Clipping
............................................................................... 8-2, 3
CNTRST ............................................................................... 10-10 CONFIG ................................................... 2-4, 10-7, 10-10, 10-11 CONFIGURATION ...........................................10-7, 10-10, 10-11 CONT
............................................................................ 1-4, 4-1
Continuous output ............................................................... 1-4, 4-1 Continuous sweep ..................................... ........................... 1-7, 5-1 Contrast adjustment ....................................................... 1-14, 10-10
B
Page
BEEP OFF/ON ....................................................................... 10-10 Beep ON/OFF switch .................................................... 1-14, 10-10 Block diagram, FG circuitry ....................................................... 1-3 Box contents ................................... ...................................... .......... 2 BURST
................................................................................... 4-9
Burst count .......................................................................... 1-4, 4-9
Coordinate setting (for arbitrary wave) ............................... 8-4, 8-6 COPY Copying
.......................................................................... 2-4, 10-8 ........................................................................ 1-14, 10-8
Cursor
................................................................................... 8-2
CURSOR ................................................................................... 8-2
D
Page
DATE
C
Page
C.DIR
............................................................................ 8-2, 8-8
Calendar clock ............................................................... 1-14, 10-11 CANCEL ................................................................................. 10-9 CARRIER AMPL....................................................................... 6-3 CARRIER FREQ ....................................................................... 6-3 CARRIER OFFSET ................................................................... 6-3 CARRIER PHASE ..................................................................... 6-3 Carrier wave ........................................................................ 1-9, 6-3 selection of ......................................................................... 1-9 Caution symbol .................................... ..................................... ...... 6 CENTER AMPL ........................................................................ 5-4 CENTER DUTY ........................................................................ 5-5 CENTER FREQ ......................................................................... 5-4 CENTER MARKER .................................................................. 5-7 Center marker ...................................................................... 1-8, 5-4
IM 706111-01E
................................................................. 7-4, 8-8, 10-11
DATE/TIME .......................................................................... 10-11 Date/time setting .................................. ................... 1-14, 3-5, 10-11 DC
.....................................................................1-4, 4-1, 4-5
DC LEVEL ................................................................................. 4-5 DC output ............................................................................ 1-4, 4-1 Level setting ....................................................................... 4-5 DDS
................................................................................... 1-1
Default values ........................................................................... 10-9 DEL LINE .................................................................................. 8-5 DEL PAGE ................................................................................. 7-1 DELETE EXEC .................................................................. 7-4, 8-8 DELETE SET ..................................... ................................. 7-4, 8-8 Deleting arbitrary-wave data ...................................................... 8-8 DEPTH ................................................................................... 6-3 Deviation .......................................................................... 1-10, 6-3 DEVIATION .............................................................................. 6-3 Dial ................................................................................... 2-1 Dial mark ................................................................................... 2-3
Index-1
I n d e x
Index
Index DIGITAL ................................................................................. 9-15 Digital Control I/O ..................................................... 1-13, 2-2, 9-9
H
Page
DIGITAL CTRL I/O ................................................ 1-13, 2-2, 9-14
High level ............................................................................ 1-6, 4-4
Dimensions ............................................................................... 12-7 Direct digital synthesis ............................................................... 1-1
HIGH LEVEL ............................................................................ 4-4 HOLD OFF/ON ................................... ...................................... . 5-6
DISPLAY TEST ................................. ...................................... 11-4 Double-sideband surpressed carrier AM ............................. 1-9, 6-1 DSB-SC AM ................................ ...................................... ......... 6-1 DUAL
................................................................................. 10-7
Dual channel setting ........................................................ 1-14, 10-7 DUTY
............................................................................ 4-2, 6-2
Duty cycle ..................................... ................................ 1-5, 4-2, 6-2 Duty-cycle sweep ................................................................ 1-7, 5-3
I
Page
INIT
.......................................................................... 2-4, 10-9
INITIALIZE ............................................................................. 10-9 Initialization ................................... .................................. 1-14, 10-9 InitOUT OFF/ON ....................................................................... 4-8 INS LINE ................................................................................... 8-5
E
Page
INS PAGE .................................................................................. 7-1 Installation .................................................................................. 3-2 Instrument No. .................................... ...................................... ...... 2
EJECT button ........................................................................... 10-3
Internal configuration of FG ....................................................... 1-4
ENTER
............................................................. 7-1, 7-4, 8-4, 8-5
Internal memory (for output setting) ........................................ 10-6
ERROR LOG .................................................................... 2-4, 11-2
Internal trigger ............................................................................ 1-4
Error message ........................................................................... 11-1
INTERPOLATE ......................................................................... 8-5
ESC
...................................... Ch.7, Ch.8, Ch.9, Ch.10, Ch.11
Interpolation ............................................................................. 1-12
Event output .................................................................... 1-12, 9-14 EXEC .......................................... 10-2, 10-8, 10-9, 10-11, 11-4
Selection of method ............................................. 5-6, 8-5, 8-7
EXP
..................................................................... 7-1, 8-4, 8-5
K F
Page
Page
Keypad
................................................................................... 2-1
KEYTEST ................................................................................ 11-4 FILE
............................................................................ 7-1, 8-1
FILE NAME ................................. ...................................... . 7-4, 8-9 FLOPPY .................................................................2-4, 10-2, 10-4 Floppy disk ................................ ..................................... ................ 3 Autoload ........................................................................... 10-4 Formatting ........................................................................ 10-2 Insertion ........................................................................... 10-3 Saving/deleting arb binary/text data .................................. 8-8 Floppy-disk drive ....................................................................... 2-1 FM
............................................................................ 1-9, 6-1
FORMAT ................................................................................. 10-2 Format of floppy disk ...................................................... 1-14, 10-2 FREQ
............................................................................ 4-3, 5-3
Frequency-& amplitude sweep ................................... ......... 1-7, 5-3 Frequency modulation ......................................................... 1-9, 6-1
L LCD
................................................................................... 2-1
LIN
................................................................................... 5-2
LINEAR ............................................................................ 5-2, 8-7 Linear interpolation .................................................................... 8-7 LINEAR STEP ........................................................................... 5-2 Linear-step sweep ................................ ................................ 1-7, 5-3 Linear sweep ................................ ...................................... .. 1-7, 5-2 LINSTEP ................................................................................... 5-2 LOAD
FSK FUNC
................................................................................. 1-11 ................................................................................... 4-2
........................................................... 7-4, 8-2, 8-7, 10-4
Loading Sequence data ................................ ..................................... 7-4 Waveform binary data........................................................ 8-1
Frequency sweep ................................................................. 1-7, 5-3 Front panel ................................... ..................................... .......... 2-1 FRQ& ................................................................................ 5-3
Page
Waveform text data ............................................................ 8-7 LOG ................................................................................... 5-2 LOG STEP ................................................................................. 5-2 Log-step sweep ...................................... .............................. 1-7, 5-2 Log sweep ................................. ................................... 1-7, 5-2, A-2
G GATE
Page
LOW LEVEL ............................................................................. 4-4
............................................................................ 1-4, 4-1
GATE IN ................................................................................... 9-1 Gate input ................................ ................................... 1-13, 2-2, 9-1 Gate (output mode) ................................. ............................. 1-4, 4-1 GP-IB
Low level ............................................................................ 1-6, 4-4
................................................................................... 2-2
M
Page
M.FUNC ................................................................................... 6-2 M.TYPE ................................................................................... 6-1 MAIN OUTPUT SETUP screen ................................................ 2-3 Manual trigger ............................................................................ 4-9 MARK
................................................................................... 9-8
Markers (output signal) ... 1-8, 1-11, 1-12, 1-13, 5-7, 8-6, 9-7, 9-14 MASTER ................................................................................. 9-11 Master unit ................................... ...................................... ....... 9-10
Index-2
IM 706111-01E
Index Messages ................................................................................. 11-1 MKR ............................................................................ 8-6, 9-8 MOD
P
Page
.................................................................. 2-1, 2-4, Ch.6
Performance testing .................................................................. 11-6
MOD FREQ ............................................................................... 6-3 MODE ................................................................................... 4-1
Periodic spline ............................................................................ 8-7
MODEL ....................................................................................... 2
Phase
............................................................................ 1-6, 4-7
Model code (suffix) ................................ ..................................... ... 2
PHASE
............................................................................ 4-7, 5-3
Model name ...................................... ..................................... ......... 2
Phase (as sweep item) .................................... ...................... 1-7, 5-3
MODIFY ................................................................................... 8-2
Phase modulation ................................................................ 1-9, 6-1
MODULATE ...................................... ...................................... Ch.6
PHASE SYNC ...................................... ............................. 4-7, 10-1
MODULATE OFF/ON .............................................................. 6-3
Phase synchronization ..................................................... 1-13, 10-1
Modulation ........................................................................ 1-9, Ch.6
PM
PERIOD SPLINE ....................................................................... 8-7
............................................................................ 1-9, 6-1
Conditions ................................................................. 1-10, 6-3
Points (for arb-wave definition) ........................................ 1-12, 8-5
Depth ................................ ...................................... ... 1-10, 6-3
Power
Frequency ........................................................................... 1-9
Connecting ......................................................................... 3-4
ON/OFF switch .................................................................. 6-3
Connector .................................................................... 2-2, 3-4
Output ................................................................1-13, 2-2, 9-9
Cord ............................................................................... 3, 3-4
Setup .................................................................................. 1-9
POWER
Types ................................ ...................................... ..... 1-9, 6-1
Power switch ....................................................................... 2-1, 3-5
................................................................................... 2-1
MODULATION FUNCTION .................................................... 6-2
PSK
MODULATION SETUP screen ................................................ 2-4
Pulse modulation ................................................................. 1-9, 6-1
MONITOR ................................................................................. 5-6
Pulse modulator ................................ ................................... 1-9, 6-2
MSTR
Pulse wave ...................................... ..................................... 1-5, 4-2 Pulse width modulation ....................................................... 1-9, 6-1
.......................................................................... 2-4, 9-11
N
Page
NAME
............................................................................ 7-4, 8-8
NEW
............................................................................ 7-1, 8-5
................................................................................. 1-11
PWM ................................................................................... 1-9, 6-1
R
Page
NORMAL ................................... ............................ 9-11, 9-13, 9-15
Rack mount .................................... ..................................... ........ 3-3
Normalization ............................................................................. 8-3
Rear-leg rubber mounts ................................. ................................. 3
NORMALIZE ............................................................................ 8-3
Rear panel ................................................................................... 2-2 RECALL ................................................................................. 10-6
O
Page
Recalling settings from memory .............................................. 10-6 Relaxed spline ............................................................................ 8-7 RELAX SPLINE ........................................................................ 8-7
OFF
........................................................... 4-8, 9-4, 9-5, 10-1
REPEAT ................................................................................... 5-1
OFFSET ..................................................................... 4-4, 5-3, 6-1
Repeat sweep .............................................................................. 1-7
Offset/amplitude input ................................. ...................... 1-13, 2-2 Offset input .................................... .................................... 1-13, 9-4 Offset modulation ..................................... ........................... 1-9, 6-1
S
Page
Offset voltage ...................................................................... 1-6, 4-4 Offset voltage, as sweep item .................................... .......... 1-7, 5-3
S.ITEM
ON
S.MODE ................................................................................... 5-1
........................................................................ 9-11, 10-1
OPER SYNC IN ................................... .................... 1-13, 2-2, 9-10 OPER SYNC OUT ................................... ................ 1-13, 2-2, 9-10
S.TYPE
................................................................................... 5-3 ................................................................................... 5-2
OPERATION SYNC ................................................................ 9-11
Sample data, in floppy disk ....................................................... A-3 SAVE ............................................................................ 7-4, 8-8
OPTION ........................................................................ 9-13, 9-15 OPTION CONTROL ........................................................ 2-4, 9-13
Saving Arbitrary-waveform data ................................................... 8-8
OUTPUT ................................................................................... 2-1
Sequence data ................................... .................................. 7-4
Output attenuator ................................ .......................... 1-3, 1-5, 4-8
Saving settings to memory ....................................................... 10-6
Output conditions ....................................................................... 1-5
Screen displays ........................................................................... 2-3
Output frequency ................................................................. 1-6, 4-3
SELF TEST ....................................................................... 2-4, 11-4
Output function .................................... ...................................... . 1-5
Self-testing ................................. ...................................... 1-14, 1-15
Output mode ........................................................................ 1-4, 4-1
SEQ
Output ON/OFF ...................................... .................................... 4-8
SEQUENCE ............................................................................... 7-1
Output settings
Sequence address input ............................................................ 9-14
..........................................................................2-4, Ch.7
Initialization ..................................................................... 10-9
Sequence data ...................................................................... 7-1, 7-4
Store, recall ...................................................................... 10-6
Sequence editor .......................................................................... 7-1
Output voltage ..................................................................... 1-6, 4-4
Sequence marker ............................................................... 1-11, 7-1
Output waveform ................................. ................................ 1-5, 4-1
SEQUENCE OFF/ON ................................................................ 7-3 Sequence output ................................................................ 1-11, 7-3
I n d e x
Sequence output ON/OFF .......................................................... 7-3 SGL&HLD ................................................................................. 5-1 Simultanous (dual) channel setting ................................. 1-14, 10-7 IM 706111-01E
Index-3
Index
Index Sine wave ............................................................................ 1-5, 4-2 Sine-wave modulator .................................... ....................... 1-9, 6-2
Ratio ................................. ..................................... ...... 1-8, 5-2 Setup .................................................................................. 1-6
SINGLE
................................................................................... 5-1
Time ............................................................................ 1-8, 5-5
SINGLE HOLD .................................... ..................................... . 5-1 Single & hold sweep .................................. .......................... 1-7, 5-1
Type ............................................................................ 1-7, 5-2 Sweep-control option .................................................... 2, 1-3, 1-12
Single sweep ................................. ...................................... . 1-7, 5-1
Sweep/modulation output .................................. ......... 1-13, 2-2, 9-9
Signal flow ................................................................................. 1-3
SWEEP OFF/ON ................................... ..................................... 5-6
Signal I/O ................................................................................. 1-14
SWEEP RATIO.......................................................................... 5-2
SLAV
.......................................................................... 2-4, 9-11
SWEEP SETUP screen .............................................................. 2-3
SLAVE
................................................................................. 9-11
SWEEP TIME ............................................................................ 5-4
Slave units ................................................................................ 9-10
SWP CTRL IN .........................................................1-13, 2-2, 9-12
Square wave ........................................................................ 1-5, 4-2
SWP HOLD IN .......................................................... 1-13, 2-2, 9-3
SPAN AMPL ................................... ..................................... ...... 5-5
Synchronization (of multiple devices) ..................... 1-13, 2-2, 9-10
SPAN DUTY ................................... ...................................... ..... 5-5
Symmetry ..................................................................... 1-5, 4-2, 6-2
SPAN FREQ ................................ ...................................... ......... 5-4
SYMMETRY ...................................................................... 4-2, 6-2
Span marker .................................... ..................................... 1-8, 5-7
SYNCHRO ...................................... ......................... 2-4, 9-11, 10-1
SPAN MARKER........................................................................ 5-7 SPAN OFFSET .......................................................................... 5-5 SPAN PHASE ............................................................................ 5-4 Specifications ........................................................................... 12-1
T
Page
Spline interpolation .................................................... 1-12, 5-6, 8-7 START AMPL ........................................................................... 5-4
TEXT EDIT .................................... ..................................... 8-4, 9-8
START CURSOR ...................................................................... 8-2 Start cursor ................................................................................. 8-2
TIME ............................................................................... 10-11 TOUCH KEYTEST ................................................................. 11-4
START DUTY ........................................................................... 5-4 START FREQ ............................................................................ 5-4
Triangular modulator wave ................................................. 1-9, 6-2
Start marker ......................................................................... 1-8, 5-7
Triangular wave .................................... ............................... 1-5, 4-2 TRIG ............................................... 1-4, 2-1, 2-4, 4-1, 7-3, 9-2
START MARKER ..................................................................... 5-7
TRIG FREQ ............................................................................... 4-9
START OFFSET ........................................................................ 5-5
TRIG IN/GATE IN .................................................... 1-13, 2-2, 9-1
START PHASE ................................... ...................................... . 5-4
TRIG INT/EXT .......................................................................... 4-9
Start value (sweep) .............................................................. 1-8, 5-4
TRIG SLOPE ...................................................................... 2-4, 9-2
STEP
Trigger
............................................................................ 5-2, 8-7
Status messages ...................................................................... 11-10
Frequency ........................................................................... 4-9
Steps (sequence) ..................................... .................... 1-11, 7-1, 7-3
Input ................................. .................................. 1-13, 2-2, 9-1
Steps (sweep) .................................... ................................... 1-8, 5-2
Output mode ................................. ............................... 1-4, 4-1
STOP AMPL .............................................................................. 5-4
Source ......................................................................... 1-4, 4-9
Stop cursor ................................... ..................................... .......... 8-2
TRIGGER SLOPE ..................................................................... 9-2
STOP CURSOR ......................................................................... 8-2
Troubleshooting .................................... ................................. 11-3,4
STOP DUTY .............................................................................. 5-5
TTL LEVEL ............................................................................... 4-4
STOP FREQ ............................................................................... 5-4 Stop marker ......................................................................... 1-8, 5-7 STOP MARKER ........................................................................ 5-7 STOP OFFSET ................................ ...................................... ..... 5-5 STOP PHASE ................................. ..................................... ....... 5-4 Stop value (sweep) .............................................................. 1-8, 5-4 STORE ................................................................................. 10-6 STORE/RECALL ................................ .............................. 2-4, 10-6 Storing output settings .............................................................. 10-6 SUFFIX SUM
....................................................................................... 2 ................................................................................... 9-4
SUM IN/VCA IN ....................................................... 1-13, 2-2, 9-4 SUM/VCA ................................... ................................. 2-4, 9-4, 9-5 SWEEP
.................................................................. 2-1, 2-3, Ch.5
Sweep Address input ................................................................... 9-14
U UNDO
Page ............................................................................ 7-1, 8-5
UPDATE ................................................................................. 10-4 UTIL ................. 2-1, 2-4, Ch.7, Ch.8, Ch.9, Ch.10, 11-2, 11-4 UTILITY ........................ 2-4, Ch.7, Ch.8, Ch.9, Ch.10, 11-2, 11-4 UTILITY menu ........................................................... 2-4, Ch.7-11
V
Page
VCA
................................................................................... 9-5
VCA IN
................................................................................... 9-5
Analog control input ........................................ 1-13, 2-2, 9-12 Clock ouptut ..................................................................... 9-14 Conditions ................................................................... 1-8, 5-4 Data memory...................................................................... 1-2 Hold ............................................................................ 1-8, 5-6 Hold input .......................................................... 1-13, 2-2, 9-3 Item ............................................................................ 1-7, 5-3 Mode ........................................................................... 1-7, 5-1 Monitor .............................................................................. 1-8 ON/OFF ............................................................................. 5-6
Index-4
IM 706111-01E
