C33124_20-DIU2M

2 Mbit/s DATA UNIT, nx64k Operating Handbook 16.12.1993

CU 24012 / CU 24013 CS 24062 II Page I (I)

CU 24012 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75/120 ohm CU 24013 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75 ohm Operating Handbook

Version D0 (ND 02J020) C33124.20

Contents

1

FUNCTI TIO ONAL DES ESC CRI RIP PTI TIO ON

DB2DU-0142-SED1

2

INSTALLATION

DB2DU-0143-SED1

3

OPERATION

DB2DU-0144-SED1

4

OPER ERA ATI TIO ON WI WITH TH SER ERVI VIC CE TERMINAL

Pro rogr gram am CS 24 2406 062, 2, ve vers rsio ion n 06 06A A

Prepared by J. Kapanen/mlt NTC/TS

Checked 30.12.93 HT HTu u

Approved 30.12.93 FE

DB2D DB 2DUU-01 0145 45-S -SED ED1 1

Number (DB2DU-0160-PED1) C33124001PE_00

2 Mbit/s DATA UNIT, nx64k Functional Description 16.12.1993

CU 24012 / CU 24013 CS 24062 II/1 Page 1

CU 24012 2 Mbit/s DATA UNIT, nx64k, G.703/704, 120/75 ohm CU 24013 2 Mbit/s DATA UNIT, nx64k, G.703/704,75 ohm Functional Func tional Description

Contents Page 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 1.2 2

UNIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3

3.4 3.5 3.6 3.7

NTC/TS

Blocks and Their Functions . . . . . . . . . . . . . . . . . . . . . . . . . 5 Operation in Transmit Direction . . . . . . . . . . . . . . . . . . . . . 7 Operation in Receive Direction . . . . . . . . . . . . . . . . . . . . . . 7 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Transmitted Synchronization Signal . . . . . . . . . . . . . . . . . . 12 Measurement Interface G.703 . . . . . . . . . . . . . . . . . . . . . . 12 Reading and Writing of Channel Signals . . . . . . . . . . . . . . 12 Statistics (2M Signal Quality) . . . . . . . . . . . . . . . . . . . . . . . 13

TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1 3.2 3.3

Prepared by J. Kapanen/si

Construction and Transmission Management . . . . . . . . . . . 4 DIU2M Unit Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Frame and Multiframe Structure . . . . . . . . . . . . . . . . . . . . ChannelĆspecific Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . Digital Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3.1 2048 kbit/s Interface . . . . . . . . . . . . . . . . . . . . . . . . 3.3.2 Synchronization Output 2048 kHz . . . . . . . . . . . . . 3.3.3 Measurement Interface 2048 kHz . . . . . . . . . . . . . Jitter and Wander Characteristics . . . . . . . . . . . . . . . . . . . Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions of the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environmental Requirements . . . . . . . . . . . . . . . . . . . . . .

Checked

Approved

15 15 17 17 17 19 20 21 21 21 (21)

Number DB2DU-0142-SED1


CU 24012 / CU 24013 CS 24062 II/1 Page 1

CU 24012 2 Mbit/s DATA UNIT, nx64k, G.703/704, 120/75 ohm CU 24013 2 Mbit/s DATA UNIT, nx64k, G.703/704,75 ohm Functional Func tional Description

Contents Page 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 1.2 2

UNIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3

3.4 3.5 3.6 3.7

NTC/TS

Blocks and Their Functions . . . . . . . . . . . . . . . . . . . . . . . . . 5 Operation in Transmit Direction . . . . . . . . . . . . . . . . . . . . . 7 Operation in Receive Direction . . . . . . . . . . . . . . . . . . . . . . 7 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Transmitted Synchronization Signal . . . . . . . . . . . . . . . . . . 12 Measurement Interface G.703 . . . . . . . . . . . . . . . . . . . . . . 12 Reading and Writing of Channel Signals . . . . . . . . . . . . . . 12 Statistics (2M Signal Quality) . . . . . . . . . . . . . . . . . . . . . . . 13

TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1 3.2 3.3

Prepared by J. Kapanen/si

Construction and Transmission Management . . . . . . . . . . . 4 DIU2M Unit Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Frame and Multiframe Structure . . . . . . . . . . . . . . . . . . . . ChannelĆspecific Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . Digital Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3.1 2048 kbit/s Interface . . . . . . . . . . . . . . . . . . . . . . . . 3.3.2 Synchronization Output 2048 kHz . . . . . . . . . . . . . 3.3.3 Measurement Interface 2048 kHz . . . . . . . . . . . . . Jitter and Wander Characteristics . . . . . . . . . . . . . . . . . . . Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions of the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environmental Requirements . . . . . . . . . . . . . . . . . . . . . .

Checked

Approved

15 15 17 17 17 19 20 21 21 21 (21)



CU 24012 / CU 24013 CS 24062 II/1 Page 2

2 Mbit/s DATA UNIT, nx64k

CU 24012 / CU 24013 CS 24062 II/1 Page 3

Functional Description 16.12.1993

1

INTRODUCTION The Data Unit CU 24012/13, of which the abbreviation DIU2M will be used from now on, belongs to the channel units of the DYNACARD equipment family. These channel units are connected to the DYNAĆ CARD equipment by means of an internal 2M bus. The DIU2M matches andconnects the 64 kbit/s and32 kbit/sconnections defined by the user between the channel unit bus and the 2M interface, see Figure 1.

PABX DM 2

MTX

DM 2

DM 2

2Mbit/s connection by microwave radio, fibre or copper cable 2 Mbit/s tributary unit CU 24012/13

Data interface unit 19.2 kbit/s or 64 kbit/s nx64 kbit/s

Subscriber interface unit (SUB)

Channel unit (e.g. TU 21234)

Data interface unit (e.g. TU 21120) DM0550EB2

Figure 1

Application example of Data Unit CU 24012/13


1.1

CU 24012 / CU 24013 CS 24062 II/1 Page 4

Construction and Transmission Management Data units are plugĆin units (cards) constructed on a EUROĆ2Ćsized cirĆ cuit board and installed in TM4 equipment cartridges. The operation of the units is controlled via the service interface on the front edge of the main unit (DYNACARDĆMUX) by means of a Service Terminal or a Service Terminal Emulator (TMC/Manager). The fault daĆ ta of the equipment is read and e.g. settings or controls are given to the target unit via the interface. Transmission management can also be carried out via a data channel composed of free bits 5-8 in time slot 0. Connection between the data channel andthe DYNACARDĆMUX processor and service interface can be established by setting the data hybrid on. By connecting the TS0 of the DIU2M to the data channel, the transmission management information can be transferred to the far end.

1.2

DIU2M Unit Types The DIU2M data units CU 24012 and CU 24013 are functionally similar to each other, but they are provided with different connectors for the 2M interface and, therefore, different impedance alternatives, see Table 1.

DIU2M

Connector type

Impedance

CU 24012 CU 24013

Euroconnector Coaxial connector

unbal. 75 ohm or bal. 120 ohm unbal. 75 ohm

Table 1

CU 24012 and CU 24013, connectors and impedances


CU 24012 / CU 24013 CS 24062 II/1 Page 5


2

UNIT OPERATION

2.1

Blocks and Their Functions

J2 BI

CONTROL

PB1

MEAS

MP

IT

J3

RLS

J4

TLS

DEMUX

FAC1

f MUX FAC3

f

P3

J6

TSS

SO

DC/DC +5 V

-

-

-5 V

J7

CU 24012

(CU 24013)

DB1226EC2

Figure 2 IT h h

h

Data Unit CU 24012 (CU 24013) block diagram 2M unit interface

generates the outgoing line code equalizes, regenerates and converts the received line signal into digiĆ tal format and generates the clock frequency for the incoming data if necessary, connects the equipment loopback


MUX h h

h h

h

h h

Transmitter

multiplexes the data and signalling buses coming from FAC3 generates the frame and multiframe for the outgoing signal, inserts the required alarm and data bits into the frame carries out the HDB3 encoding generates the CRC multiframe, if required

DEMUX h

CU 24012 / CU 24013 CS 24062 II/1 Page 6

Receiver

carries out the HDB3 decoding aligns with the incoming signal frame alignment word and demultiĆ plexes the multiplexing into the data and signalling bus supervises the fault conditions of the received signal realizes the alarm functions in compliance with the ITUĆT (former CCITT) Recommendation

CONTROL

Control and supervision

A block controlled by the local processor: conveys data on the state of the unit to the equipment main unit via h the command bus performs the settings and controls via the service interface and thus h via the command bus h controls the equipment operation in fault conditions compiles statistics on fault conditions h FAC3 h

h

h

aligns the data and signalling buses coming from direction Rx of the DYNACARD bus with the Tx (or DM 2; Tx or Rx direction) direcĆ tion clock allocates and, if necessary, rearranges the time slots in the DYNAĆ CARD bus -> 2M interface direction performs the required channelĆassociated loopbacks in the direction of the 2M interface

FAC1 h

h

Frame alignment to 2M interface

Frame alignment to bus interface

aligns the data and signalling buses coming from the DEMUX with the DYNACARD bus Tx direction clock and connects the defined channels to the bus via the BI interface performs the defined channelĆassociated loopbacks in the direction of the bus interface


SO h

Synchronization output signal

generates the outgoing synchronization signal

MP h

Selection of measurement point signal (MEAS)

generates the output signal to the measurement interface

BI h

Bus interface

matches the signals between the unit and the DYNACARD bus

DC/DC h

2.2

CU 24012 / CU 24013 CS 24062 II/1 Page 7

Power supply

generates the operating voltages +5 V and -5 V required by the unit from the central battery voltage

Operation in Transmit Direction In the transmit direction (BI --> TLS), the data and signalling signals coming from the bus are buffered in the FAC3 (IC3) in phase with the TCLK or connected through in the phase of the RCLK (DM 2ĆMUX). At the same time, the required time slot arrangements are made. The FAC3 generates also the defined channelĆassociated loopbacks (RLS --> TLS). TheMUXcircuitgeneratestherequiredframeandmultiframeinaccordĆ ance with the timing coming from the FAC3 and adds the alarm and data bits to the frame. In addition, the circuit multiplexes the data and signalĆ ling buses coming from FAC3 into one data stream, into which the HDB3 code is added. The encoded signal is connected via 2M interface block IT as a TLS signal.

2.3

Operation in Receive Direction In the receive direction (RLS --> BI), a digital signal is obtained from 2M interface block IT to the DEMUX (IC4); after HDB3 decoding, data and signalling are extracted from this signal as two separate signals. The DEMUX is synchronized with the received frame alignment word and, if TS16 is used for signalling, also with the received multiframe (G.704). If necessary, the circuit also searches the multiframe alignment complying with the CRC (G.706). The DEMUX block also supervises the receive diĆ rection fault conditions and receives the alarm bits. The FAC1 (IC1) buffers the clock and frame phase coming from the DEMUX to comply with the Tx direction frame phase used on the bus. The circuit also makes the required time slot shifts and channel connecĆ tions in the direction of the bus via interface BI.


CU 24012 / CU 24013 CS 24062 II/1 Page 8


2.4

Alarms The DIU2M unit has a common supervision block for both the unit faults and the 2M faults. The unit faultsand 2Mfaultstogetherreserve space for 26 faults in the fault supervision table of the DYNACARDĆMUX. 2M faults

There are altogether twelve 2M faults to be supervised. Some of the fault consequences can be defined by the user. Table 2 shows the fault catĆ egories, the corresponding rack alarms, the service LEDstate, the effects on data and signalling bits and the states of farĆend alarm bits in the outĆ put of the interface in question.

Fault code (HEX.) 32 42 42 51 56 16 63 63 63 0 B3 B3 B3 4A 52 B2 66 99 0

Table 2

Fault

Fault Rack LED category alarm

No incoming 2M signal AIS 2M AIS 2M Frame alignment lost CRC multiframe alignment lost Loop to equipment BER-3 BER-3 BER-3 BER-3 FEA (=TS0/B3) FEA (=TS0/B3) FEA (=TS0/B3) AIS TS16 Multiframe alignment lost TS16/F0/B6 BER-6 Fault in Tx OK

Rx data

Rx Tx Tx TX sig B3 B6 AIS

5 4 4 4

AS S BS AS

yel yel yel yel

AIS AIS AIS AIS

AIS AIS AIS AIS

1 1 1 1

1 1 1 1

4 4 4 2 2 0 3 3 3 2 2 2 1 0 0

AS AS AS A B S BS AS AS AS S B B -

yel yel yel yel yel yel yel yel yel yel yel yel yel -

AIS AIS

1 1 1 0 0 0 0 0 0 0 0 0 0 0 0

1 1 AIS 1 0 0 0 0 0 0 1 1 0 0 0 0

AIS AIS

AIS AIS AIS AIS AIS AIS

2M faults

The 'Fault in Tx' alarm can be selected to be given in a situation, where, after the FAC3, 4 zeros are found in bits a-d in one of channels 1-15 of the outgoing signalling channel to the 2M direction. When the alarm seĆ lection is active, the bits of the channel concerned are forced into state 0001 before transmission. The default setting is forced control without any alarm. Also enabling of signalling state abcd = 0000 on channels 1-15 can be selected (ADPCM usage).


CU 24012 / CU 24013 CS 24062 II/1 Page 9


Unit faults

Table 3 shows the unit faults. Before the equipment main unit gives the unit the startĆup permission, the only fault indication given by the unit is Equipping error, which is indicated by the red LED.

Fault code (HEX) 94 95 9F 7A 8D 17 14 8B

Fault

Equipment reset Forced indication Run diagn. test Sync. fault Forced control on Test mode Blocked from use Missing unit

Table 3

Rack alarm AS B A A B AS B AS

LED

Tx B3

red 1 red/yellow/red/yellow/yellow yellow yellow -

Tx Tx B6 AIS 1

AIS

Unit faults

Equipment reset:

the unit has been reset (e.g. when switching on the power) Forced indication:

forced control of service LEDs activated Run diagnostic test:

a more detailed description on a fault indicated by this is obĆ tained by selecting 9,9,u,7 (Runtest). E.g. memory fault in frame alignment circuits (RAM # OK) Synchronization fault:

the fault category for the Tx signal is >3 when the 2M Rx clock has been selected to the synchronization output (fault masked) Forced control on:

a control provided with a timeĆout is active Test mode:

EPROM or EEPROM test running Blocked from use:

oneoftimeslotallocationsisqueuingforatimeslotfromthebus (NC) or the TS0 data channel waits for the connection between the DM 2 MUX data channel and bus Missing unit:

DYNACARDĆMUX lost access to channel unit


CU 24012 / CU 24013 CS 24062 II/1 Page 10

Service LEDs

Red

Serious fault in unit or unit not included in equipment configuration.

Yellow

Fault in the signal received by unit, fault restricting the operation of the unit or a control activated in the unit.

Green

Unit accessed by Service Terminal.

If the operating voltages of the unit are disconnected (power supply fault), an external auxiliary voltage connected to the unit activates the red service LED.


2.5

CU 24012 / CU 24013 CS 24062 II/1 Page 11

Loopbacks With respect to the 2M interface, equipment loopback (see Figure 3) can be performed in the unit. The loopback is performed viathe service interĆ face. To ensure that the loopback is not left valid by mistake, it is released automatically after the time set for the controls has elapsed.

RLS

DEMUX

TLS

MUX 2M AIS signal DB1228EB1

Figure 3

Equipment loopback for 2M interface "TDAT" "TSIG"

RLS

FAC1 DEMUX

f

"TSYN" "TCLK"

FAC3 TLS

MUX

f "RDAT" "RSIG" "RCLK" "RSYN" DB1229EA1

Figure 4

ChannelĆassociated loopbacks

Also channelĆassociated loopbacks, see Figure 4,canbeperformedonthe unit. In such situations, the connections are made by settings and are thus not timeĆsupervised.


2.6

CU 24012 / CU 24013 CS 24062 II/1 Page 12

Transmitted Synchronization Signal The synchronization output signal is selectable among the bus clock sigĆ nals (TCLK and RCLK) and the clock regenerated from the 2M Rx sigĆ nal; this clock canbe defined to be disconnected, should thereceive direcĆ tion fault condition require it (fault category > 3).

2.7

Measurement Interface G.703 Four different signals from the 2M interface can be selected to the measurement interface: the Rx direction RLS data signal, the Tx direcĆ tion TLS data signal or the clock signal from either direction.

2.8

Reading and Writing of Channel Signals The DIU2M unit provides a possibility to test the channels via the service interface of the main unit. A bit pattern can be written into the outgoing 2048 kbit/s signal or into a channel time slot of the signal going to the multiplex unit. Similarly, the current contents can be read from a 2048 kbit/s signal coming from any time slot or from the multiplex unit. When data is written into a time slot, the data replaces the normal signal. ReadĆ ing a time slot does not disturb the normal operation. Similar reading and writing facilities are offered for the signalling data by the DIU2M unit. It is possible to read the signalling data of a specific channel either from the incoming or the outgoing signal by the Service Terminal. The Service Terminal can also be used for replacing the signal transmitted by the multiplex unit by a test signal either in time slot 16 of the outgoing signal (data conveyed to the far end) or the replacement can be performed for the signalling information going to the multiplex unit (nearĆend data). In both cases, the writing facility is provided with a timeĆout and the writĆ ing is deactivated when the time defined for the controls has elapsed. The writing is also stopped when writing to another channel in the same direcĆ tion is activated or if the unit is reset. Also selections Stop writing and DIU2M to normal state cause the writing to be stopped.


2.9

CU 24012 / CU 24013 CS 24062 II/1 Page 13

Statistics (2M Signal Quality) The statistics include statistics and error counter information concerning the operation of the equipment compiled by the equipment itself. The quality of the 2M signal is supervised in the DIU2M unit by observing the errors detected in the frame alignment word and in the CRC blocks. The format of the responses seen on the display is based on the ITUĆT Recommendation G.821 concerning signal quality. According to the recĆ ommendation, the total time (S(tot)) must be divided into available time and unavailable time (S(unav)). The available time is further divided into severely errored seconds (S(sev)),errored seconds (S(err)) anddegraded minutes (M(degr)) as follows: The connection is unavailable when the signal contains ten consecuĆ tive seconds with an error ratio worse than 10 -3. The seconds in question belong to the unavailable time (S(unav)). The available time begins again from the beginning of ten consecutive seconds with an error ratio better than 10 -3. The unavailable time also includes various severe failures, e.g. a missing signal or loss of frame alignĆ ment, if their duration exceeds 10 seconds. Errored seconds are seconds including one or several errors. Severely errored seconds are seconds in the available time with an error ratio worse than 10 -3. Degraded minutes are sequences of 60 seconds with the mean error ratio worse than 10-6. Errored Seconds

The ITUĆT Recommendations give maximum values for ratios concernĆ ing signal quality. The values have been measured for the 64 kbit/s signal with a certain connection type. Higher transmission rates are provided with recommendation drafts which presuppose that the transmission ratio is taken into consideration when calculating the errored seconds. When calculating errors in the 2048 kbit/s signal, if the number of errors in a second is smaller than 32, the number of errors is divided by 32 and the number obtained is considered as the value for an errorless 64 kbit/s signal in each second. If the number of errors is 32 or greater, the second in question is considered errored (count value = 1) also in the 64 kbit/s signal. When measuring errors in the frame alignment word, if an error is deĆ tected in the frame alignment word in the time of one second, the second in question is considered errored also as concerns the 64 kbit/s signal.


CU 24012 / CU 24013 CS 24062 II/1 Page 14

Number of Errors of the Error Ratio

If, in the time of one second, more than 28 erroneous frame alignment words are detected (BER = 10-3), the second concerned is considered severely errored. If, in the time of one minute, at least 2 errors are deĆ tected in the frame alignment word (BER = 1.12 x 10 -6) or at least 123 CRC block errors (BER = 1.00 x 10 -6), the minute is considered deĆ graded (if CRC is in use, it is utilized in identifying the degraded minute). Statistics Display

The menus obtained from the Service Terminal display the statistics conĆ cerning the availability of the equipment. The statistics are based on calculation of the error ratio: h h h h h h h h h

total time available time errored seconds BER > 10-3 seconds degraded minutes S(unav)/S(tot) S(err)/S(ava) S(sev)/S(ava) M(degr)/M(ava)

The total time and the available time are indicated in seconds. S(unav)/S(tot) indicates the ratio of the unavailable time to total time. S(err)/S(ava) indicates the ratio of errored seconds to the available time. S(sev)/S(ava) indicates the ratio of the severely errored seconds to the available time. M(degr)/M(ava) indicates the ratio of degraded minutes to the available time. Error Counters

The error counters contain occurrences of various fault conditions deĆ tected in the operation of the equipment: h h h h

number of frame alignment losses number of erroneous frame alignment words number of CRC block errors number of DIU2M unit processor resets.


3

TECHNICAL SPECIFICATIONS

3.1

Frame and Multiframe Structure

CU 24012 / CU 24013 CS 24062 II/1 Page 15

The frame and multiframe structure comply with ITUĆT (former CCITT) Recommendation G.704/706. Basic Characteristics

Bit rate Sampling rate Time slots in a frame Speech & data time slots Bits in a time slot Frames in a multiframe Signalling bits / speech channel Multiplex principle

3.2

2048 kbit/s ±50 ppm 8 kHz 32 30 (31) 8 16 4 Time slot interleaving

ChannelĆspecific Delays Channel Delay (ms) DYNACARD Bus --> 2M Interface

no TSI

Tx Clk: Fixed delay:

MUX Tx Used

HW >= 06A: 130...380 HW < 06A: -

Not used

MUX Rx Used Not used

12...504 12...504

255 -

130/255/380/504 130/255/380/504

TSI used Tx Clk: Fixed delay:

MUX Tx Used/Not used

HW >= 06A: (130...380)+t HW < 06A: 12...504

MUX Rx Used/Not used 255+t (130/255/380)+t


CU 24012 / CU 24013 CS 24062 II/1 Page 16

Channel Delay (ms) 2M Interface --> DYNACARD Bus

no TSI Fixed delay:

Used

Not used

HW >= 06A: 130...380 HW < 06A: -

12...166 12...166

TSI used Fixed delay:

Used/Not used

HW >= 06A: HW < 06A:

(130...380)+t (130...380)+t

Comments: TSI = Time Slot Interchanging Tx Clk = menu selection 6,9,u,4,1 Fixed delay = menu selection 6,9,u,4,2 t = (Tx TS - Rx TS) x 3.9 ms NOTE

When n x 64k connections are defined, time slot allocation is unrestricted if the HW version of the DIU2M is 06A (or newer) and the fixed TS delay (6,9,u,4,2,1) has been activated (SW >= 04A). In other cases, time slot interleaving is not alĆ lowed or if it is made, the time slot shift must be the same and to the same direction for all time slots.


3.3

Digital Interfaces

3.3.1

2048 kbit/s Interface

CU 24012 / CU 24013 CS 24062 II/1 Page 17

The interface complies with ITUĆT Recommendation G.703. Bit rate Code

2048 kbit/s ±50 ppm HDB3

Transmitter Characteristics

Pulse shape Peak voltage NoĆpulse height Pulse width Amplitude ratio between positive and negative pulses Width ratio between positive and negative pulses Output jitter

see Figure 5 2.37 V / 75 ohm and 3.0 V / 120 ohm 0.237 V / 75 ohm and 0.3 V / 120 ohm 244 ns ±20 ns 0.95...1.05 0.95...1.05 see Chapter 4.4

Receiver Parameters

Attenuation at 1 MHz Impedance Return loss Allowed input jitter

< 6 dB 75 ohm or 120 ohm > 12 dB / 50...100 kHz > 18 dB / 0.1...2.1 MHz > 14 dB / 2.1...3.1 MHz see Chapter 4.4

3.3.2 Synchronization Output 2048 kHz The interface complies with ITUĆT Recommendation G.703. Pulse shape Frequency Impedance Amplitude

see Figure 6 2048 kHz ±50 ppm 75 / 120 ohm 2...3.8 Vpp / 120 ohm 1.5...3.0 Vpp / 75 ohm


CU 24012 / CU 24013 CS 24062 II/1 Page 18


269 ns (244 + 25)

20% 10% V = 100 %

194 ns

10%

(244-50)

20%

Nominal pulse

50 % 244 ns

219 ns (244 - 25)

10%

10%

10%

10%

0% 20 %

488 ns (244 + 244)

Figure 5

Mask figure in 2048 kbit/s interface

DM0053EA1


CU 24012 / CU 24013 CS 24062 II/1 Page 19


3.3.3 Measurement Interface 2048 kHz The transmitted or received 2048 kbit/s data signal of the 2 Mbit/s interfaĆ ce and the corresponding 2048 kHz clock signals can be measured via this interface. Bit rate Code h Pulse shape h Peak voltage NoĆpulse height h h Pulse width h Amplitude ratio between positive and negative pulses h Width ratio between positive and negative pulses T/12

T/12

T/12

T/4

T/4

2048 kbit/s ±50 ppm HDB3 see Figure 5 2.37 V / 75 ohm 0.237 V / 75 ohm 244 ±20 ns 0.95...1.05 0.95...1.05. T/12

T/12

T/12

+U

+U1

0

-U1

-U2

T/4

T/4

T

SIGNAL MONOTONOUS

T=Average cycle length of clock signal DM0052EA1

Figure 6

Clock signal output mask figure


3.4

CU 24012 / CU 24013 CS 24062 II/1 Page 20

Jitter and Wander Characteristics The DYNACARD equipment meet the jitter (2 Mbit/s) and wander reĆ quirements defined by ITUĆT Recommendation G.823. Jitter and Wander Tolerance

The allowed jitter in the 2 Mbit/s input interface is shown in Figure 7.

A p-p A 0

36.9 UI

1.5 UI

A 1

0.2 UI

A 2

f -5

1.2 x 10 Hz

20 Hz

2.4 kHz

18 kHz

100 kHz DB1255EA1

Figure 7

Lower limit of the jitter and wander tolerance in the 2 Mbit/s interface

Network Synchronization

To prevent uncontrolled slips in the buffer memory of the DIU2M, the DIU2M signal and the Tx clock ofthe DYNACARDbus mustbemesochĆ ronous (on an average of the same frequency) with regard to each other. A permanent difference in frequency causes a controlled slip so that a whole frame (one 8 kHz sample/64 kbit/s channel) is either left out or reĆ peated. The slip interval is 256/df. Symbol df stands for the frequency difference of the 2 Mbit/s signals.


3.5

Power Supply Type Supply voltage Power consumption

3.6

BuiltĆin DC/DC converter -20...-72 VDC < 2.5 W

Dimensions of the Unit Height Width Depth Weight

3.7

CU 24012 / CU 24013 CS 24062 II/1 Page 21

233 mm / 6 U 26 mm / 5 T 160 mm 0.3 kg

Environmental Requirements The environmental requirements are defined in a separate document Environmental Specification for ND Equipment". The environmental categories for the DIU2M unit are N1 and K1. Temperature Humidity

Operation -10...+50 _C 95 %, 30 _C

Transportation -40...+70 _C max. 98 %


CU 24012 / CU 24013

Installation

II/2 Page 1

16.12.1993

CU 24012 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75/120 ohm CU 24013 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75 ohm Installation

Contents

1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2

JUMPER SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3

INSTALLING THE UNIT IN A CARTRIDGE . . . . . . . . . . . . . . 6

3.1 3.2 4

SIGNAL INTERFACES AND THEIR CABLING . . . . . . . . . . . . 8

4.1 4.2 4.3 4.4

Prepared by J. Kapanen/si NTC/TS

Power Supply and Bus Interfaces on Back Connector PB1 6 Equipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Front Connectors and Cables . . . . . . . . . . . . . . . . . . . . . . . . 8 Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Signal Interfaces and Cabling of Unit CU 24012 . . . . . . . 10 Signal Interfaces and Cabling of Unit CU 24013 . . . . . . . 14 (14)

Checked

Approved


2 Mbit/s DATA UNIT, nx64k Installation 16.12.1993

CU 24012 / CU 24013 II/2 Page 2


1

CU 24012 / CU 24013 II/2 Page 3

INTRODUCTION This document describes the cable connections, installation into a carĆ tridgeandthenecessaryjumpersettingsofdataunitsDIU2M(CUĂ24012, CU 24013). In the unit, the operating connections are made only to the connectors on the unit front edge. The back connector of the unit is intended for equipĆ ment power supply and internal bus interface. Data unit interfaces are available either at one fullĆlength Euroconnector (CU 24012) or three coaxial connectors (CU 24013). Before installing the unit into a cartridge, check that the jumper settings conform to the interface type selected (see chapter 2). The data unit is installed in a subrack or cartridge meeting the TM4 ConĆ structionPractice specifications. The data units are ready foruseimmediĆ ately after they have been installed in the cartridge and the signal cables have been connected. The general cabling instructions for the TM4 ConĆ struction Practice and the connection instructions for the connectors are found in the Operating Handbook of the TM4 Construction Practice. For information on the connection of central battery voltages and rack alarms to the cartridges as well as the routing of signal cables, grounding, installation planning and work order, please refer to the OperatingHandĆ book of the TM4 Construction Practice. NOTE

Wrist grounding or other such protection should always be used when handling a plugĆin unit removed from its package.


CU 24012 / CU 24013

Installation

II/2 Page 4

16.12.1993

2

JUMPER SETTINGS

J2

DIU2M

PB1

Red Yellow Green NR4 NR5

P3

Jumper in Jumper out

NR2

T75 R75 RGND DB1230EA3

Figure 1

Locations of jumper settings on data unit CU 24012/ CU 24013

2048 kbit/s Interface

The sheath of the incoming cable can be connected to equipment ground and in unit CU 24012 either a 120Ćohm balanced or a 75Ćohm unbalanced interface can be selected for use:

Alternative

Location of jumper NR5 NR4

Impedance

Incoming cable sheath

a

120 ohms

Connected to equipment ground

b

120 ohms

Disconnected from equipment ground

c

75 ohms

d

75 ohms

Table 1

2048 kbit/s interface

Connected to equipment ground Disconnected from equipment ground

2 Mbit/s DATA UNIT, nx64k Installation

CU 24012 / CU 24013 II/2 Page 5

16.12.1993

Synchronization Interface

In unit CU 24012, either a 120Ćohm balanced or a 75Ćohm unbalanced inĆ terface can be selected for use:

Alternative

Location of jumper NR2

Impedance

a

120 ohms

b

75 ohms

Table 2

Synchronization interface


CU 24012 / CU 24013

Installation

II/2 Page 6

16.12.1993

3

INSTALLING THE UNIT IN A CARTRIDGE

3.1

Power Supply and Bus Interfaces on Back Connector PB1 When the data interface unit is installed in the cartridge, the central batĆ tery voltage is connected to the unit via the motherboard of the cartridge and the back connector PB1 of the unit. Simultaneously, the unit is grounded to the cartridge body. P

Power supply interface through which the unit obtains the central battery voltage.

B

Bus interface, described in more detail in the Functional Description of the equipment main unit.

The bus interface includes the command bus (CMI, CMO), unitĆspecific address data (UA0-UA4), Rx signals (RSYN,RCLK, RDAT and RSIG) of the bus as well as Tx signals (TSYN, TCLK, TDAT and TSIG) of the bus. Power supply and bus interfaces on back connector PB1 Voltage/ Signal

Use

Voltage/ Signal

Use

cba Supply voltage for bus transmitters Ground

VP5 GND

Tx bus clock Tx bus signalling Rx bus clock Rx bus signalling To command bus main unit Rx bus data channel

TCLK TSIG RCLK RSIG CMI RBCB

Unit address in binary format

Battery voltage, negative Battery voltage, positive Ground

UA0 UA1 UA2 UA3 UA4

VNB VPB GND

c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12 c13 c14 c15 c16 c17 c18 c19 c20 c21 c22 c23 c24 c25 c26 c27 c28 c29 c30 c31 c32

a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15 a16 a17 a18 a19 a20 a21 a22 a23 a24 a25 a26 a27 a28 a29 a30 a31 a32

VP5 GND

Supply voltage for bus transmitters Ground

TSYN T DAT RSYN R DAT CMO TBCB

Tx bus synchronization signal T x b us dat a si gn al Rx bus synchronization signal R x b us dat a si gn al From command bus main unit Tx bus data channel

VP5T VN5T

For testing For testing

VAP5 GND

External auxiliary voltage +5 V Ground

VNB VPB GND

Battery voltage, negative Battery voltage, positive Ground DB1312EB2

Figure 2

Back connector PB1


CU 24012 / CU 24013

Installation

II/2 Page 7

16.12.1993

3.2

Equipping The connectors on the motherboard of the cartridge and subrack and the backconnectorsoftheunitshavebeenstandardizedsothatthesamevoltĆ ages and rack alarm signals are always located at the same pins. ThereĆ fore, any type of unit may be installed at any location in the cartridge. A data unit may be installed at any unit location in any TM4 cartridge which contains a MUX unit. The cartridge may house also other Nokia ND genĆ eration equipment. A data unit requires one unit location in the cartridge (width 5 T). FigureĂ3 shows an equipping example where three data units have been installedin a 20 T cartridge. 20 T cartridge

MUX

DIU2M DIU2M DIU2M

P1

J2

J2

NOKIA

Rack

J2

J2

J3 J4 P3

P3

J6

P3

J7 1 LOCATION 1 2 3 4

Figure 3

2

3

4

UNIT MUX unit Data unit CU 24012/120 ohm Data unit CU 24012/75 ohm Data unit CU 24013/75 ohm

DB1313EB1

DM 2 equipping example: a 20 T cartridge houses a PCM multiplex equipment comprising the MUX unit and three DaĆ ta Units CU 24012/13


CU 24012 / CU 24013

Installation

II/2 Page 8

16.12.1993

4

SIGNAL INTERFACES AND THEIR CABLING

4.1

Front Connectors and Cables All connectors are of male type. Figures 4-6 show the locations of signals in the connectors, cabling is presented in Tables 4 and 5 .

Unit

2M IF

CU 24012/120 ohm CU 24012/75 ohm CU 24013/75 ohm

P3 Euroconn. P3 Euroconn. P3 Euroconn. P3 Euroconn. J3-J4 coax. conn. J6 coax. conn.

Table 3

Sync.output IF

Meas. IF G.703 J2 coax. conn. J2 coax. conn. J2 coax. conn.

Connectors of the CU 24012/13 units

It is recommended to use Euroconnectors (1/4) and symmetrical pair cable for the cable connections in unit CU 24012 at both the 2048 kbit/s interface andthesynchronization interface. One connectoranda half of a pair cable are required for each interface. SMB coaxial cable and coaxial connectors are used for CU 24013 at both the 2048 kbit/s interface and the synchronization interface. When connecting the cables, the sheath of the received signal can be grounded or left ungrounded. The required jumper settings must also be made on the unit. Grounding leads to the equipment ground. For recommendations on cables and connectors suitable for balanced cabling and for work instructions, please refer to the OperatingHandbook of the TM4 Construction Practice.


4.2

CU 24012 / CU 24013 II/2 Page 9

Signals Symbol

Use

RLS

Receive line signal, in unit CU 24012 on Euroconnector P3 and in unit CU 24013 on connector J3.

TLS

Transmit line signal, in unit CU 24012 on EuroconnecĆ tor P3 and in unit CU 24013 on connector J4.

TSS

Transmit synchronization signal, in unit CU 24012 on Euroconnector P3 and in unit CU 24013 on connectorJ6.

MEAS

Measurement signal, G.703 interface. The Rx or Tx clock/data signals can be selected for the connector J2.

MSOUT

TTL test output, in unit CU 24012 on Euroconnector P3 and in unit CU 24013 on connector J7.


CU 24012 / CU 24013

Installation

II/2 Page 10

16.12.1993

4.3

Signal Interfaces and Cabling of Unit CU 24012

DIU2M CU 24012/120 W Use

Direction Signal

J2 Meas. out

P3

Signal Direction Use RLSS

2M in

RLSC

2M in

RLSG

2M in

32a 31a 30a 29a 28a 27a 26a 25a 24a 23a 22a 21a 20a 19a 18a 17a 16a 15a 14a 13a 12a 11a 10a 9a 8a 7a 6a 5a 4a 3a 2a 1a

Use 32c 31c 30c 29c 28c 27c 26c 25c 24c 23c 22c 21c 20c 19c 18c 17c 16c 15c 14c 13c 12c 11c 10c 9c 8c 7c 6c 5c 4c 3c 2c 1c

MEAS

Direction Signal

2M out

TLSS

2M out

TLSC

2M out

TLSG

Sync. out

TSSS

Sync. out

TSSC

Sync. out

TSSG

Test out

MSOUT

Test out (TTL)

GND DB1314EB1

Figure 4

CU 24012/120 ohm, front connectors P3 and J2


CU 24012 / CU 24013

Installation

II/2 Page 11

16.12.1993

CU 24012/120 ohm, DIU2M NOKIA KLVMAAM 2x(2x0.4+0.4)+0.4mm CABLE Pair

Wires

1

blue white clear

2

orange white clear

Cable

1

CONNECTOR Conn.

CHANNEL Use

Signal

31a 27a 25a

2M in 2M in 2M in

RLSS RLSC RLSG

31c 27c 25c

2M out 2M out 2M out

TLSS TLSC TLSG

23c 19c 17c

Sync. out Sync. out Sync. out

TSSS TSSC TSSG

Test out Test out

MSOUT GND

Connector pin

P3 Cable

2

1

blue white clear

2

orange white clear

5c 1c

DB1317EB2

Table 4

Marking of cabling, CU 24012/120 ohm


CU 24012 / CU 24013

Installation

II/2 Page 12

16.12.1993


Direction

Signal

J2 Meas. out

P3

Signal Direction Use

RLSU

2M in

RLSC

2M in

32a 31a 30a 29a 28a 27a 26a 25a 24a 23a 22a 21a 20a 19a 18a 17a 16a 15a 14a 13a 12a 11a 10a 9a 8a 7a 6a 5a 4a 3a 2a 1a

32c 31c 30c 29c 28c 27c 26c 25c 24c 23c 22c 21c 20c 19c 18c 17c 16c 15c 14c 13c 12c 11c 10c 9c 8c 7c 6c 5c 4c 3c 2c 1c

Use

MEAS

Direction

Signal

2M out

TLSU

2M out

TLSC

Sync. out

TSSU

Sync. out

TSSC

Test out

MSOUT

Test out (TTL)

GND DB1315EB2

Figure 5

Data unit CU 24012/75 ohm, front connectors P3 and J2


CU 24012 / CU 24013

Installation

II/2 Page 13

16.12.1993

CU 24012/75 ohm, DIU2M NOKIA KLVMAAM 2x(2x0.4+0.4)+0.4mm CABLE Pair

Wires

1

blue white clear

2

orange white clear

Cable

1

CONNECTOR Conn.

CHANNEL Use

Signal

29a 27a

2M in 2M in

RLSU RLSC

29c 27c

2M out 2M out

TLSU TLSC

21c 19c

Sync. out Sync. out

TSSU TSSC

Test out Test out

MSOUT GND

Connector pin

P3 Cable

2

1

blue white clear

2

orange white clear

5c 1c

DB1318EB2

Table 5

Marking of cabling, CU 24012/75 ohm


CU 24012 / CU 24013

Installation

II/2 Page 14

16.12.1993

4.4

Signal Interfaces and Cabling of Unit CU 24013


Direction Signal

J2 Meas. out

MEAS

J3 2M in

RLS

2M out

TLS

Sync. out

TSS

Test out (TTL)

MSOUT

J4 J6

J7

DB1316EB2

Figure 6

CU 24013/75 ohm, front connectors J2, J3, J4, J6 and J7

2 Mbit/s DATA UNIT, nx64k Operation 16.12.1993

CU 24012 / CU 24013 CS 24062 II/3 Page 1

CU 24012 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75/120 ohm CU 24013 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75 ohm Operation

Contents Page 1

STARTĆUP OF THE DATA UNIT . . . . . . . . . . . . . . . . . . . . . . . . . 3

2

SW SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 3.2 3.3 3.4


Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 State and Fault Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Fault Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Performance Measurements . . . . . . . . . . . . . . . . . . . . . . . . 10 (10)

Checked

Approved



CU 24012 / CU 24013 CS 24062 II/3 Page 2


CU 24012 / CU 24013 CS 24062 II/3 Page 3

Operation 16.12.1993

1

STARTĆUP OF THE DATA UNIT 1.

Place the data unit, the DYNACARDĆMUX (DM 2, DB 2 or DN 2) andtheotherunits,ifany,intoaDM2,DB2orDN2equipmentcarĆ tridge or subrack.

2.

Connect the Service Terminal to the service interface of the DYNAĆ CARDĆMUXunitandestablishaconnectiontotheequipment(conĆ nection cables unconnected): OBJ

7

The response:

RET

Current object: AD 4095/DM2 9600 bit/s /EOB/

The green LED is lit to indicate that a connection from the Service Terminal to the equipment has been established. NOTE!

Whenever a new unit is installed in a subrack, it shall be provided with default settings. 3.

Perform equipment installation by installing all units:

TOP

6

,

2

,

The response: 3

RET

Installing /EOB/

(duration approx. 10 sec.) Verify:

TOP

6

,

2

,

0

RET

The response: DIU2M /EOB/

4.

Check fault indications given by the equipment: TOP

1

RET

unit 2


2

CU 24012 / CU 24013 CS 24062 II/3 Page 4

SW SETTINGS Operation of the data units (DIU2M) is controlled via the service interfaĆ ce of the DYNACARDĆMUX unit. Through this interface, equipment state and alarm data are read, controls and settings are given, loopbacks are ordered, etc. If the service interfaces have been linked to each other to compose a bus and the buses have been further linked as a service network by means of a data channel, all equipment connected to the bus or network can be conĆ trolled remotely from one point using the Service Terminal, (DN 2/) DB 2 Manager or the Transmission Management System TMS (See TransĆ mission Management System TMS, Operating Handbook). A DIU description Operation with Service Terminal included in this book presentstheservice menus obtainedfrom theunit anddescribestheir use. The Service Terminal is provided with a separate Operating Handbook. The data unit is ready to operate after its installation into a cartridge conĆ taining the DYNACARD MUX unit (DM 2, DB 2 or DN 2), and the conĆ nection of signal cables. Before commissioning, however, identifications and settings should be verified, the required changes in the factory setĆ tings should be made and the statistics and error counters should be reset. No commissioning measurements are necessary. Unit settings

Service Terminal selection 6,9,u,0 displays the settings for thesynchronizĆ ation output, MUX selections, 2M interface and control timeĆout. Default settings (6,9,u,1)

The default settings are the following: h h

h

synchronization output interface: MUX settings: h Tx CLK h Fixed TS delay 2M interface settings: CRC h h TS0 data channel h TS0 bits B4-B8 h BER-3 fault consequence h h h

FEA fault consequence AIS fault consequence Fault in Tx

Tx BUS CLK MUX Tx CLK Not in use In use Not in use permanent '1' A+S alarms, AIS into chanĆ nels, B3 and B6 to the far end S alarm S alarm No alarm


h h h h h h h

Tx FEA SWAIS Use of 2M interface Use of multiframe BER-6 alarm MEAS output signal TS16/F0 bits 5, 7 and 8

CU 24012 / CU 24013 CS 24062 II/3 Page 5

Rx faults Enabled In use In use Not in use Tx 2M Data Permanent '1'.

TS allocation (6,9,u,2) Bidirectional allocations (6,9,u,2,1)

The time slot allocations between the 2048 Mbit/s interface and the chanĆ nel unit bus in the unit can be given either as individual allocations or as groups of successive time slots. When n x 64 kbit/s connections are made, therestrictionsgiven in Functional Description, in Chapter 4.2 (ChannelĆ specific delays) shall be taken into consideration. Special allocation types (6,9,u,2,3)

It is possible to define unidirectional 32 kbit/s or 64 kbit/s channel allocaĆ tions by special allocation alternatives: h h h h h h

allocation from bus to 2M interface allocation from 2M interface to bus loop to 2M interface loop to bus Fixed data to 2M interface Fixed data to bus

Display (6,9,u,2,0)

The selection displays all the allocation data grouped in different types. The unactivated allocations queuing for a time slot in the bus are proĆ vided with letters NC. The unactivated time slot allocations are also disĆ played on the fault display of the main unit (TOP 1). Remove all allocations (6,9,u,2,8)

Removes all time slot allocations and reservations of unit u on the bus. Reserved TS:s on BUS (6,9,u,2,9)

Displays, in addition to time slots allocated for unit u, also the ones reĆ served by the other channel units.


CU 24012 / CU 24013 CS 24062 II/3 Page 6

2M settings (6,9,u,5) TS0 bits, data channel (6,9,u,5,3,1)

Taking a data channel into use simultaneously in several DIU2M units calls for program version 03A (or newer) and unit version 04A (or newer) in all units concerned. When the DM2ĆMUX is used, the selection 6,1,8,3 or 6,1,8,4 must be made in it. Use of 2M interface (6,9,u,5,6,0,Used)

The interface may be removed from use e.g. in the installation stage. The interfaceisthenexcludedfromthefaultsupervisionoftheequipmentand AIS is connected to the defined time slots. DIU2M statistics (8,9,u)

The statistics concerning the signal quality and the error counters are reset when the equipment is commissioned: h h h

Statistics resetting (8,9,u,1,1) Reset 2M error counters (8,9,u,2,5) CPU reset counter resetting (8,9,u,3,1).

This ensures that compilation of statistics and counting of errors is began at the commissioning.


CU 24012 / CU 24013 CS 24062 II/3 Page 7

Operation 16.12.1993

3

MAINTENANCE The equipment does not require periodic maintenance. Servicing is reĆ quired only when faults are indicated by alarms. Detailed information on the state of the equipment and on the type of fault can be obtained by the Service Terminal. Information on the condition of the equipment and the signal quality is obtained also from internal measurements and statistics. The measureĆ ment results and statistics are read using the Service Terminal. The Service Terminal may also be used to invoke tests and loops which may be required for troubleshooting.

3.1

Alarms

RACK ALARM LAMPS red

alarm A (prompt)

white

alarm B (deferred)

yellow

alarm D (reminder of alarm cancellation)

SERVICE LEDS red

serious fault in the equipment

yellow

fault in the signal received by the equipment, equipment fault, or controlled service function (e.g. loopback) in the equipment

green

equipment connected to the Service Terminal

DM1027EB2

Figure 1

Rack alarm lamps and service LEDs


CU 24012 / CU 24013 CS 24062 II/3 Page 8

Interpretation of Alarms on Equipment Level

The red service LED is turned on to indicate a serious fault in the equipĆ ment, which will usually have to be replaced by a new one. The red service LED, the red rack alarm lamp and programmable alarm output PA1 are activated by means of an external auxiliary voltage. The yellow service LED usually indicates a fault in the signal received by the equipment. The alarm may also be caused by an activated service proĆ cedure (e.g. loopback or forced indication) in the equipment. The equipĆ ment indicating the fault is not necessarily faulty itself, the fault may be also in the farĆend equipment or in the signal cables. The green service LED is lit when the equipment is being controlled by the Service Terminal. Interpretation of Alarms on Unit Level

The logic section of a DIU2M unit can be superficially checked by observĆ ing the service LEDs. h

When the red LED is lit, the fault is in the unit. Note! In connection with a power supply failure, the red LED is lit although the fault were outside the unit.

h

The yellow LED indicates an equipment level fault.

h

The green LED is lit when the unit is accessed via the service interfaĆ ce by means of the Service Terminal.


3.2

CU 24012 / CU 24013 CS 24062 II/3 Page 9

State and Fault Messages The following tables list the state and fault messages obtained from the data unit. The fault messages are obtained by the Service Terminal from menu 1, Fault Display. The tables also show the corresponding rack alarms and service LED indications for each fault condition.

FAULT CODE (HEX)

FAULT CONDITION

RACK ALARMS

SERVICE LEDS

94

Equipment reset

A

red

95 9F

Forced indication Run diagnostic test

B A

red/yellow red/yellow

7A 8D

Synchronizing fault Forced control on

A B

yellow yellow

17

Test mode

A

yellow

14

Blocked from use

8B

Missing unit

Table 1 FAULT CODE (HEX) 32 42

B

-

A

-

Unit faults FAULT CONDITION

No incoming 2M signal

RACK ALARMS

SERVICE LEDS

A

yellow

AIS 2M

yellow

51

Frame alignment lost

A

yellow

56

CRC multiframe alignment lost

A

yellow

63 66

BER > 1 E-3 BER > 1 E-6

A B

yellow yellow

B3

FarĆend alarm

16

Loop to equipment

99

Fault in Tx (transmitter)

4A 52 B2

Table 2

AIS TS16 Multiframe alignment lost Multiframe alarm from far end

2M faults

yellow A

yellow

B

yellow

A

yellow

A

yellow yellow


3.3 3. 3

CU 24012 / CU 24013 CS 24062 II/3 Page 10

Fau ault lt Lo Loca cati tion on In fau fault lt con condit dition ions, s, it is pos possib sible le tha thatt sev severa erall uni units ts sim simult ultane aneous ously ly ind indica icate te thee sa th same me fa faul ultt be beca caus usee th thee ef effe fect ctss of ofth thee fa faul ultt sp spre read ad al alon ongg th thee si sign gnal al pa path th.. Usuall Usu allyy the theequ equipm ipment ent whi which ch det detect ectss the fau fault lt wil will, l, how howeve ever, r, sen send d the AIS to prevent alarms in the other units. They will instead indicate the AIS. If th thee fa faul ultt ca cann nnot ot be lo loca cate ted d by th thee eq equi uipm pmen entt al alar arms ms an and d th thee fa faul ultt me mess ssĆĆ ages obtained by the Service Terminal, equipment and interface loopĆ backs, testing of the signal path in the equipment and memory tests may prove useful. NOTE

3.4

Loops and sig Loops signal nal pat path h tes tests ts wil willl dis disrup ruptt the com commun munica icatio tion. n. If the loops are not cancelled, cancelled, they will remai remain n active for the preset control time.

Perf erfor orman mance ce Mea Measur sureme ements nts Sincee th Sinc thee eq equi uipm pmen entt co coll llec ects ts da data ta on th thee si sign gnal al qu qual alit ityy an and d an anyy fa faul ults ts th that at occur, and indicate the faults by alarms, very few performance tests conĆ ducted with external measuring instruments are necessary. MeasureĆ ments may, however, be performed if desired. The operating voltages may be measured and the results read with the Service Terminal. If the operating voltages deviate from the recomĆ mend me nded ed va valu lues es,, it is ad advi visa sabl blee to ha have ve th thee eq equi uipm pmen entt in insp spec ecte ted. d. Th Thee vo volt ltĆĆ ages are permitted to deviate by ± 5 % from their nominal values.

2 Mbit/s DATA UNIT, nx64k Operation with Service Terminal 16.12.1993

CU 24012 / CU 24013 CS 24062 II/4 Page 1

CU 24012 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75/120 ohm CU 24013 2 Mbit/s DATA UNIT, nx64k, G.703/704, 75 ohm Operation with Service Terminal

Contents Page 1

SERVICE MENUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3

SERVICE TERMINAL MAIN MENU . . . . . . . . . . . . . . . . . . . . 12

4

DATA UNIT MENUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1 4.2 4.3 4.4 4.5 4.6 4.7

Fault Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Settings (permanent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NOTE


15 17 19 23 41 42 44 (46)

This descr descriptio iption n is valid for progr program am CS 2406 24062, 2, versi version on 06A

Checked

Approved



CU 24012 / CU 24013 CS 24062 II/4 Page 2


1

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SERVICE MENUS

MAIN LEVEL MENU TOP

Select Operation: 1 Fault display 2 Local alarm cancel 3 Reset local cancel 4 Identifications 5 Controls (temporary) 6 Settings (permanent) 7 Measurements 8 Statistics 9 Testing 10 User privileges 11 Miscellaneous

4,9,u

5,9,u

Give main level: 4 ... 9 4-9 Select the unit: 9

6,9,u

9 Give unit number: (letter u designates the unit number in the menus)

7,9,u

8,9,u

9,9,u

DIU2M identifications: 3 User manual 4 2M IDs 5 HW-unit ID 6 Program ID 7 Modify IDs

DIU2M controls: 0 Display 1 DIU2M to normal state 2 Interface controls 3 Signal to MEAS-output 4 Forced indications 6 Read/Write CH 7 Read/Write SIG

DIU2M settings: 0 Display 1 Set NOKIA defaults 2 TS allocation 3 Synchr. output 4 MUX settings 5 2M interface 7 Timeout for controls 8 Read/Save DIU2M settings

See: Page 4

Pages 5-6

Pages 7-9

DIU2M measurements: 1 Supply voltages

Page 10

DIU2M statistics: 1 2M signal quality 2 2M error counters 3 CPU reset counter

Page 10

DIU2M testings: 4 A/D-test 5 Memory tests 6 Memory operations 7 RUNTEST

Page 10


CU 24012 / CU 24013 CS 24062 II/4 Page 4

IDENTIFICATIONS

4,9,u DIU2M identifications: 3 User manual 4 2M IDs 5 HW-unit ID 6 Program ID 7 Modify IDs

4,9,u,7 Modify IDs: 4 2M IDs 5 HW-unit ID

4,9.u,7,4 2M IDs: 0 Display own 1 Modify own 2 Display conn. 3 Modify conn. 4,9,u7,4,1/3 Give ID string: 1-15 characters

4,9,u,7,5 HW-unit ID: 0 Display 1 Modify 4,9,u7,5,1 2 CU 24012 3 CU 24013 4,9,u,7,5,2/3 Give .-version: 0-99

Give version: 3 characters


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CONTROLS

5,9,u DIU2M controls: 0 Display 1 DIU2M to normal state 2 Interface controls 3 Signal to MEAS-output 4 Forced indications 6 Read/Write CH 7 Read/Write SIG

5,9,u,2 2M interface: 0 Display 1 To normal state 3 Loop to equipment

5,9,u,3 Signal to MEAS-output: 0 Display 1 Tx 2M data 2 Rx 2M data 3 Tx 2M CLK 4 Rx 2M CLK 5,9,u,4 Forced indications: 0 Display 1 Normal indic. 2 Forced red indic. 3 Forced yellow indic. 4 Forced no indic.


CU 24012 / CU 24013 CS 24062 II/4 Page 6

CONTROLS 5,9,u

5,9.u,6,1

DIU2M controls: 0 Display 1 DIU2M to normal state 2 Interface controls 3 Signal to MEAS-output 4 Forced indications 6 Read/Write CH 7 Read/Write SIG

2M interface: 1 Read 2 Write

5,9,u,6,1,1

1-31

TS number? 1...31 5,9,u,6,1,2

1-31

TS number? 1...31 5,9,u,6,1,2,1-31 Bits value? 12345678 10101010 e.g

5,9,u,6 TS data R/W: 1 2M interface 2 X interface 3 Stop writing

5,9,u,6,2 X interface: 1 Read 2 Write

1-31 5,9,u,6,2,1 TS number? 1...31 1-31 5,9,u,6,2,2 TS number? 1...31 5,9,u,6,2,2,1-31 Bits value? 12345678 10101010 e.g.

5,9,u,7 Sig. data R/W: 1 2M interface 2 X interface 3 Stop writing

5,9,u,7,1 2M interface: 1 Read 2 Write

5,9,u,7,1,1

1-30

Ch number? 1...30 5,9,u,7,1,2

1-30

Ch number? 1...30 5,9,u,7,1,2,1-30 Bits value? abcd 0101 e.g.

5,9,u,7,2 X interface: 1 Read 2 Write

5,9,u,7,2,1

1-30

Ch number? 1...30 5,9,u,7,2,2

1-30

Ch number? 1...30 5,9,u,7,2,2,1-30 Bits value? abcd 0101 e.g.


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SETTINGS 6,9,u,1 6,9,u DIU2M settings: 0 Display 1 Set NOKIA defaults 2 TS allocation 3 Synchr. output 4 MUX settings 5 2M interface 7 Timeout for controls 8 Read/Save DIU2M settings

Are you sure? 121 Yes

6,9,u,1,121 Done

6,9,u,2 TS allocation: 0 Display 1 Activate n TS 2 Remove one TS 3 Special alloc. types 8 Remove all allocations 9 Reserved TS:s on BUS

page 8

6,9,u,3 Synchr. output: 0 Display 1 *Tx BUS CLK & Tx 2M CLK 2 Rx BUS CLK 3 Rx 2M CLK 4 Rx 2M CLK/fault masked 6,9,u,4 MUX settings: 1 Tx timing 2 Fixed TS delay

6,9,u,4,1 Tx timing: 0 Display 1 *MUX Tx CLK 2 MUX Rx CLK 6,9,u,4,2

6,9,u,5 2M-settings: 0 Display 1 Set NOKIA defaults 2 Use of CRC 3 Use of TS0 bits 4 Fault consequences 5 SWAIS 6 Use of 2M interf. 7 Use of MF 8 BER-6 alarm 9 Signal to MEAS-output 10 TS16/F0 bits 6,9,u,7 Timeout for controls: 0 Display 1...65000 min 6,9,u,8 * default setting

Read/Save all: 0 Display ID 1 Read settings 2, Save settings

Fixed TS delay: 0 Display 1 In use 2 *Not in use

page 9


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SETTINGS 6,9,u,2 TS allocation: 0 Display 1 Activate n TS 2 Remove one TS 3 Special alloc. types 8 Remove all allocations 9 Reserved TS:s on BUS

6,9,u,2,3 Special types: 0 Display 1 Activate to BUS 2 Activate to 2M 3 Remove from BUS 4 Remove from 2M 5 Loop to BUS 6 Loop to 2M 7 Fixed data to BUS 8 Fixed data to 2M

6,9,u,2,1 Give TS count: 1...31 Give first TS on BUS: 1...31 Give first TS on 2M: 1...31 6,9,u,2,2 Give Tx TS on BUS: Done 1...31

6,9,u,2,3,1 (2) Give Rx TS on 2M (BUS): 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB) Give Tx TS on BUS (2M): 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB) 6,9,u,2,3,3 (4) Give Tx TS on BUS (2M): 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB) 6,9,u,2,3,5 (6) Give Rx TS on BUS (2M): 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB) Give Tx TS on BUS (2M): 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB) 6,9,u,2,3,7 (8) Give Tx TS on BUS (2M): 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB) 1-31

Bits value? 12345678 10101010 e.g.

33-63 Bits value? 1234 1101 e.g value? 65-95 Bits 5678 1101 e.g.

Bits value? abcd 0101 e.g.


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SETTINGS 6,9,u,5 2M settings: 0 Display 1 Set NOKIA defaults 2 Use of CRC 3 Use of TS0 bits 4 Fault consequences 5 SWAIS 6 Use of 2M-interface 7 Use of MF 8 BER-6 alarm 9 Signal of MEAS-output 10 TS16/F0 bits

6,9,u,5,1 Done 6,9,u,5,2 CRC: 0 Display 1 *CCITT R.B Modif. 2 CCITT B.B 3 Not used 6,9,u,5,3 TS0 bits usage: 0 Display 1 Data channel 2 *Fixed '1' 3 Fixed '0' 6,9,u,5,4 Fault consequences: 1 Error rate >1E-3 2 Far-end alarm 3 AIS alarm 4 Fault in Tx 5 Tx FEA 6,9,u,5,5 SWAIS: 0 Display 1 *Enabled 2 Disabled 6,9,u,5,6 Use of 2M: 0 Display 1 *Used 2 Not used 6,9,u,5,7 Use of MF: 0 Display 1 *Used 2 Not used 6,9,u,5,8 BER-6 Alarm: 0 Display 1-254 sec. count time 255* Disable alarm 6,9,u,5,9 MEAS-output: 0 Display 1 *Tx 2M data 2 Rx 2M data 3 Tx 2M CLK 4 Rx 2M CLK

* default settings

6,9,u,5,10 TS16/F0 bits: 0 Display 1*Fixed '1' 2 Fixed '0'

6,9,u,5,3,1 Data channel: 0 Display 1 * Not in use 2 Sampl. rate 4 kHz 3 Sampl. rate 8 kHz 4 Sampl. rate 16 kHz 6,9,u,5,3,2/3 Select bits: 4...8 6,9,u,5,4,1 Error rate >1E-3: 0 Display 1 *A+S+AIS+FEA 2 A-alarm 3 B-alarm 4 No alarm 6,9,u,5,4,2 FEA consequences: 0 Display 1 *S-alarm 2 B+S -alarm 3 A+S -alarm 6,9,u,5,4,3 AIS alarm consequences: 0 Display 1 *S-alarm 2 B+S -alarm 6,9,u,5,4,4 Fault in Tx: 0 Display 1 B-alarm 2 *No alarm 3 Not in use 6,9,u,5,4,5 Tx FEA active: 0 Display 1*Rx fault 2 Rx- or MUX Rx-fault

6,9,u,5,10,1/2 Select bit: 5,7,8


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MEASUREMENTS 7,9,u DIU2M Measurements: 1 Supply voltages

STATISTICS 8,9,u DIU2M statistics: 1 2M signal quality 2 2M error counters 3 CPU reset counter

7,9,u,1

7,9,u,1,1,2

Voltage measurements: 1 +5 V 2 -5 V

7,9,u,1,2,2

Supply voltage 5 V: 1 Display voltage (float) 2 Calibration

Give measured supply voltage mV (without sign)

8,9,u,1 DIU2M signal quality: 1 Reset statistics 2 TT, AT, ES, SES, DM 3 Total time 4 Available time 5 Err. secs. 6 Severely err. secs. 7 Degraded minutes 8 S (unav) /S (tot) 9 S (err) /S (ava) 10 S (sev) /S (ava) 11 M (degr) /M (ava) 8,9,u,2 2M error counters: 0 Display all 2 Frame sync. losts 3 Errored framewords 4 Errored CRC-blocks 5 Reset counters 8,9,u,3 CPU reset counter: 0 Display 1 Reset

TESTING 9,9,u DIU2M Testing: 4 A/D-test 5 Memory test 6 Memory operations 7 RUNTEST

9,9,u,5 Memory tests: 1 RAM 2 EPROM 3 EEPROM 9,9,u,6 Memory operations: 1 Read byte 2 Write byte in RAM 3 Read 8 bytes 4 Write byte in EEPROM

9,9,u,6,1/3 Give memory addr.: 0...65535 9,9,u,6,2 Give memory addr.: 0...65535 Give byte value: 0...255 9,9,u,6,4 Give EEPROM offset: 0...511 Give byte value: 0 ... 255


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GENERAL The Data Unit is controlled by the Service Terminal, the use of which is described in the Operating Handbook of Service Terminal TC 21700. By means of the Service Terminal, the basic settings of the equipment can be performed and stored into the permanent storage (replaces jumper setĆ tings), maintenanceĆrelated measures, e.g. loopbacks, can be taken, and identifications, statistics, etc. can be read from the equipment. OFF

ON

Select operation: 1 Fault display 2 Local alarm cancel 3 Reset local cancel

F1

F2

F3

F4

MODE

OBJ

TOP

UP

>...

HELP

STO

RCL

DEF

DATA

7

8

9

ASCII

D 4

E 5

F 6

INV

A

B

C

1

2

3

EXP -

. 0

#

AUTO

,

RET

DEL

TS2105EA3

Figure 1

Service Terminal keypad

Command parameter separator

The Service Terminal functions are menuĆbased. The menu levels can be byĆpassedif theuser knows therequired command strings. Thekey<,>is used as a command parameter separator. For example, if 5,9,3,2,3 is given from the main level, the outgoing 2048 kbit/s signal of the 2M interĆ face of the data unit is looped back to the equipment, i.e., equipment loopback is performed. In the previous example, the unit is installed in unit location 3.


3

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SERVICE TERMINAL MAIN MENU When the Service Terminal is switched on, it shifts into mode Use of equipment/Select operation, which is the factory setting. The main menu common to all equipment, offered by the Service Terminal, is disĆ played:

Select operation: 1 Fault display 2 Local alarm cancel 3 Reset local cancel 4 Identifications 5 Controls (temporary) 6 Settings (permanent) 7 Measurements 8 Statistics 9 Testing 10 User privileges 11 Miscellaneous

1

Fault display

The fault display indicates the fault condition of the equipment. The fault data indicates: h h h h

equipment ID (e.g. DM 2 ABC) fault category ( A, B, D, S or combination of these) supervision block indicating the fault fault type

The equipment ID is given by the user in the Identifications menu. Fault display does not concern a single unit but the entire equipment. 2

Local alarm cancel

In a fault condition, selection Local alarm cancel cancels rack alarms A and B. As a reminder of cancellation, alarm D is given. Cancelling an alarm without a fault condition produces also alarm B. Local alarm canĆ cel concerns the entire equipment. 3

Reset local cancel

The normal situation is restored.


4

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Identifications

Under this function, the equipment identifying data, such as equipment type, the name givenand the type and version of the program used, can be read. Some of the identifications can be changed by the user. 5

Controls (temporary)

Controls are functions (loopbacks, forced alarms, etc.) required for troubleshootingand servicing of theequipment. All controls areremoved automatically after a set supervision period, with the exception of the seĆ lection of signal to the MEAS output. 6

Settings (permanent)

Settingsdetermine theoperatingmode of theequipment. They arestored in the equipment storage also during a power outage. 7

Measurements

Under this function, various measurements made by the equipment itself are performed (without external measuring instruments). 8

Statistics

Reading and emptying of statistics collected by the equipment itself. 9

Testing

Automatic tests performed by the equipment itself. 10 User privileges

The protective functions of the equipment are under this function. Some of the equipment functions (e.g. Settings) can be protected. The equipĆ ment can be given a password that must be known if protected functions are to be changed. A single unit has no protective functions of its own. 11 Miscellaneous

This category covers the functions not included in the above entries (not yet in use).


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Access to Data Unit

Since the Data Unit is not provided with a direct service interface, the Service Terminal functionsmust be directed to theData Unit viathe main unit (DYNACARDĆMUX). First, the main level menu (4...9) is selected, then 9 separated by a comma and finally the unit number u: 4...9,9,u.

The unit numbering starts from 1 on the left. By entering the command given above, the menu of the unit concerned, below the main level, is acĆ cessed.


4

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DATA UNIT MENUS The data unit is controlled via the service interface in the main unit (DYNACARDĆMUX). The main unit offers the menus related to the commonsectionoftheequipmentandviathemenusofferedbyittheuser can select the unit for the measures taken. The data unit provides the menus required for its control.

4.1

Fault Display The main unit collects the fault data from other units into a common fault storage. In the initialization stage, the main unit collects from each unit the faultĆrelated data: the faults of the unit, their effect on the alarm outĆ puts, the fault code related with each fault, how the fault is indicated (colĆ our of indicator) and name of the supervision block. The main unit generĆ ates a response to the fault inquiry. The response contains the following data: h h h

equipment ID (equipment name) fault status fault data: h fault object fault type (fault code) h

Example:

*DM 2 ABC (AS) MUXĆ2M unit 1: - frame alignment lost DIU2M unit 3: - no incoming 2M

In the above example, the equipment is provided with the name DM 2 ABC and it indicates alarms A and S. The fault indications come from the main unit equipment interface supervision block (unit 1), the fault being loss of frame alignment, and from the supervision block of the data unit (unit 3), the fault being the missing incoming 2048 kbit/s signal. The data unit has a common supervision block (DIU2M) for both the 2M interface (2M faults) and the other parts of the unit (unit faults).


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Faults Supervised by DIU2M Unit Faults: h h h h h h h h

Equipment reset Forced indication Run diagnostic test Synchronization fault Forced control on Test mode Blocked from use Missing unit

Faults of 2M Interface Block: h h h h h h h h h h h h

No incoming 2M AIS 2M Frame alignment lost CRC frame alignment lost Error rate > 10 -3 Error rate > 10 -6 Alarm from far end Equipment loopback Fault in Tx (transmitter) AIS TS16 Multiframe alignment lost Alarm from farĆend signalling equipment

The last four faults can occur only if channelĆassociated signalling is used.


4.2

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Identifications 4,9,u

DIU2M Identifications

DIU2M Identifications: 3 User manual 4 2M IDs 5 HW-unit ID 6 Program ID 7 Modify IDs

In the menu, selections 3...6 display the equipment identifications which can be modified via item 7. 4,9,u,3

User manual

The document number of Operation with Service Terminal manual relatĆ ing to the program; fixed. Response: DB2DU-0145-SED

4,9,u,4

2M IDs

ConnectionĆspecific identifications, given by theuser, that canbe used for network management. Response example: HEL 91 -> ESP 10

4,9,u,5

HWĆunit ID

Unit type designation and version symbol. Set at factory, but the user can change it e.g. in connection with repair. Response example: CU 24013 06A


4,9,u,6

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Program ID

Program type and version; fixed. Response: CS 24062 06A

4,9,u,7

Modify IDs

Modify IDs: 4 2M IDs 5 HW-unit ID

When selection 4 is made, the following menu is displayed: 2M IDs: 0 1 2 3

Display own Modify own Display conn. Modify conn.

Selections 0 and 2 display the ID and selections 1 and 3 display the text: Give ID string: 1-15 characters

When selection 5 is made, the following menu is displayed: HW-unit ID: 0 Display 1 Modify

Selection 0 displays the type designation and version, and selection 1 disĆ plays the menu: 2 CU 24012 3 CU 24013

After the type designation has been selected, the .Ćversion and the version symbol are given.


4.3

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Controls 5,9,u

DIU2M Controls

DIU2M Controls: 0 Display 1 DIU2M to normal state 2 Interface controls 3 Signal to MEAS-output 4 Forced indications 6 Read/Write CH 7 Read/Write SIG

The controls, excluding the Signal to MEASĆoutput selection, are timeĆ supervised. Active controls are usually indicated by a B alarm and the yelĆ low service LED. 5,9,u,0

Display

This selection displays all controls performed on the unit. Response example:

Active controls: 2M equipment loopback

When no controls have been performed, the reply Normal is obtained. 5,9,u,1

DIU2M to normal state

Forces all controls of the data unit into normal state. 5,9,u,2

Interface controls

By Interface controls function, the 2M interface is selected as the object. The following is displayed: 2M interface: 0 Display 1 To normal state 3 Loop to equipment

Selection 0 displays the state of the interface.


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Selection 1 returns the interface into normal state. Byequipmentloopback(selection3)theoutputsignaloftheequipmentis looped back to the equipment. 2M AIS is connected to the interface outĆ put to indicate loopback and alarm AS is activated. 5,9,u,3

Signal to MEAS output

Under Signal to MEAS output function, the signal going to the measureĆ ment connector of the unit can be selected.

Signal to MEAS output: 0 Display 1 Tx 2M data 2 Rx 2M data 3 Tx 2M CLK 4 Rx 2M CLK

Selection 0 displays the current selection. The outgoing 2048 kbit/s signal is connected to the measurement interfaĆ ce by selection 1. The incoming 2048 kbit/ssignal is connected to the measurement interfaĆ ce by selection 2. The outgoing direction clock, nominal frequency 2048 kHz, can be measured from the interface by selection 3. The clock generated from the incoming signal can be fed to the measureĆ ment interface by selection 4. 5,9,u,4

Forced indications

Forced indications: 0 Display 1 Normal indic. 2 Forced red indic. 3 Forced yellow indic. 4 Forced no indic.

Selection 0 displays the forced indication selected for the unit.


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Selection 1 cancels the forced controls of indicators. Indications are deĆ termined by fault conditions. By selection 2, the red service LED starts to blink, alarm B is given and fault data on forced fault indication is provided. By selection 3, the yellow service LED starts to blink, alarm B is given and fault data on forced indication is provided. Selection 4 disables the indications (however,thegreen service LED is on if the unit is being accessed by the Service Terminal), gives alarm B and provides fault data on forced indication. 5,9,u,6

Read/Write CH

Under this function it is possible to read and write time slot data both in the 2M interface and the X interface direction.

TS data R/W: 1 2M interface 2 X interface 3 Stop writing

Selection 1 makes it possible to read time slot data entering from the 2M interface and write a fixed bit configuration into the time slot leaving for the 2M interface. Selection 2 directs the corresponding functions to the X interface (conĆ nection field). By selection 3 the time slot writing is stopped. After selection 1/2 the following menu is displayed:

2M interface/X interface: 1 Read 2 Write

After selection 1, the time slot 1...31, whose current contents are required to be read, is given. The contents are displayed in binary format. After selection 2, the time slot number and the bit configuration to be written are given in the form 11001010 (B1-B8, 8 characters, 1 or 0).


5,9,u,7

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Read/Write SIG

The functions following this selection are the same as under selection 5,9,u,6 except that time slots are replaced by channel numbers (1...30) and the bit configuration is of form 1011 (abcd, 4 characters, 1 or 0) when the write option is selected.


4.4

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Settings (permanent) Settings determine the operating mode of the equipment and are mainĆ tained during a power outage. If the unit is replaced by a new one, the setĆ tings are automatically copied into the new unit except for channelĆspeĆ cific loopbacks, fixed data patterns and 32 kbit/s connections between the BUS and the 2M on bits B5-B8 (HB). 6,9,u

DIU2M Settings

DIU2M settings: 0 Display 1 Set NOKIA defaults 2 TS allocation 3 Synchr. output 4 MUX settings 5 2M interface 7 Timeout for controls 8 Read/Save DIU2M settings

6,9,u,0

Display

Selection 6,9,u,0 displays all settings (excluding time slot allocations). 6,9,u,1

Set NOKIA defaults

Selection 6,9,u,1 sets all settings to their default values. After the selecĆ tion, the program prompts for confirmation:

Are you sure? 121 Yes

By selection 121 the following default settings are activated: h h

h

synchronization output interface: MUX settings: Tx CLK h h Fixed TS delay 2M interface settings: h CRC h TS0 data channel h TS0 bits B4-B8

Tx BUS CLK MUX Tx CLK Not in use In use Not in use permanent '1'


h

BER-3 fault consequence

h

FEA fault consequence AIS fault consequence Fault in Tx Tx FEA SWAIS Use of 2M interface Use of multiframe BER-6 alarm MEAS output signal TS16/F0 bits 5, 7 and 8

h h h h h h h h h

6,9,u,2

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A+S alarms, AIS into chanĆ nels, B3 and B6 to the far end S alarm S alarm No alarm Rx faults Enabled In use In use Not in use Tx 2M Data Permanent '1'.

TS allocation

TS allocation: 0 Display 1 Activate n TS 2 Remove one TS 3 Special alloc. types 8 Remove all allocations 9 Reserved TS:s on BUS

General principle in checking the definition strings: If a defined time slot is already used by another unit in the bus interface, the program displays a warning that all the allocations were not activated; some of them were left to queue for a possible release. If, on the other hand, the allocation definitions contained an overlapping definition, the last selection is not accepted at all. A fault message indicatĆ ing a definition fault is given instead. 6,9,u,2,0

Display

The selection displays all allocation data regarding the 2M interface and the bus, grouped in different allocation types. 6,9,u,2,1

Activate n time slot

Selection 6,9,u,2,1 displays a menu prompting forthe number of consecuĆ tive time slots to be defined.


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Give TS count: 1...31

Selection 6,9,u,2,1,l (l indicates the number of selected time slots) is folĆ lowed by a menu prompting for the first time slot in the bus.

Give first TS on BUS: 1...31

Select Sele ctio ion n 6, 6,9, 9,u, u,2, 2,1, 1,l, l,m m (m in indi dica cate tess th thee fi firs rstt ti time me sl slot ot in th thee bu buss in inte terf rfac ace, e, condition m+l < 33) is followed by a menu prompting for the first time slot in the 2M interface.

Give first TS on 2M: 1...31

By selection 6,9,u,2,1,l,m,n the time slot allocation between the bus and the 2M interface is defined as follows (conditions m+l < 33 and n+l < 33). BUS

2M

m ... m+l-1

6,9,u,2,2

> <--<--> <-->

n ... n+l-1

Remove one TS

Select Sele ctio ion n 6, 6,9, 9,u, u,2, 2,2 2 is fo foll llow owed ed by a me menu nu pr prom ompt ptin ingg fo forr th thee ti time me sl slot ot to be removed from the bus interface.

Give Tx TS on BUS: 1...31

Selection 6,9,u,2,2,m cancels the definitions made for time slot m on the bus side.


6,9, 6, 9,u, u,2, 2,3 3

CU 24012 / CU 24013 CS 24062 II/4 Page 26

Spec Sp ecia iall al allo loca cati tion on ty type pess

Special types: 0 Display 1 Activate to BUS 2 Activate to 2M 3 Remove from BUS 4 Remove from 2M 5 Loop to BUS 6 Loop to 2M 7 Fixed data to BUS 8 Fixed data to 2M

6,9,u,2,3 6,9,u ,2,3,1-2 ,1-2

Unidirecti Unidi rectional onal chann channel el alloc allocation ationss

Selection 6,9,u,2,3,1 activates one channel (32/64 kbit/s) in the 2M interĆ face towards the bus. The program displays a menu prompting for the time slot to be connected from the 2M interface and it is followed by another menu prompting for the time slot of the bus.

Give Rx TS on 2M (BUS): 1-31 = n (T 1-31 (TSn Sn = 64 64 kb/ kb/s) s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB)

Give Tx TS on BUS (2M): 1-31 = n (T 1-31 (TSn Sn = 64 64 kb/ kb/s) s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB)

Selection 6,9,u,2,3,1,n,m activates the allocation from time slot n of the 2M interface to time slot m of the bus. Selection 6,9,u,2,3,1,95,35 allocates allocates bits B5-B8 of time slot 31 in the inĆ coming 2M to bits B1-B4 of time slot 3 in the bus. In a corresponding way, but as a mirror image of the previous, it is possĆ ible to make an allocation from the bus to the 2M interface by selection 6,9,u,2,3,2,m,n.


6,9,u,2,3 6,9,u ,2,3,3-4 ,3-4

CU 24012 / CU 24013 CS 24062 II/4 Page 27

Remove Rem ove from BUS/2 BUS/2M M inter interface face

Select Sele ctio ion n 6, 6,9, 9,u, u,2, 2,3, 3,3 3 di disp spla lays ys a me menu nu pr prom ompt ptin ingg fo forr th thee ti time me sl slot ot to be re reĆĆ moved. Give Tx TS on BUS (2M): 1-31 = n (T 1-31 (TSn Sn = 64 64 kb/ kb/s) s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB)

Selection 6,9, Selection 6,9,u,2,3 u,2,3,3,m ,3,m remov removes es from the definitions definitions the one made in time slot m towards the bus. Selection Select ion 6,9,u 6,9,u,2, ,2,3,4 3,4,n ,n rem remove ovess fro from m the def defini initio tions ns the one mad madee in tim timee slot n to the 2M interface. 6,9,u,2,3 6,9,u ,2,3,5-6 ,5-6

Loop to BUS/2 BUS/2M M

Selection 6,9,u,2,3,5 performs the loopback to the bus and selection 6,9,u,2,3,6 performs the loopback towards the 2M interface. Each selecĆ tion is first followed by a menu prompting for the Rx direction time slot and then one prompting for the definition of the Tx direction time slot. Give Rx TS on BUS (2M): 1-31 = n (T 1-31 (TSn Sn = 64 64 kb/ kb/s) s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB)

Selection Select ion 6,9 6,9,u, ,u,2,3 2,3,r, ,r,tt all alloca ocates tes tim timee slo slott r com coming ingfro from m the thebus busbac back k to the bus, to time slot t. Selection Select ion 6,9 6,9,u, ,u,2,3 2,3,6, ,6,r,t r,t all alloca ocates tes tim timee slo slott r com comingfrom ingfrom the the2M 2Mint interf erface ace back to the interface, to time slot t.


6,9,u,2,3,7-8

CU 24012 / CU 24013 CS 24062 II/4 Page 28

Fixed data to BUS/2M

After selection 6,9,u,2,3,7 the menu prompts for the definition of time slot for which the data is allocated. Give Tx TS on BUS: 1-31 = n (TSn = 64 kb/s) 33-63 = n+32 (TSn/B1-B4 = 32 kb/s) (LB) 65-95 = n+64 (TSn/B5-B8 = 32 kb/s) (HB)

After selection 6,9,u,2,3,7,m the menu prompts for the data to be conĆ nected in binary format. If the 64 kbit/s channel is concerned, the followĆ ing two menus are displayed.

Bits value? 12345678 10101010 e.g.

Bits value? abcd 0101 e.g.

In the case of a 32 kbit/s definition, one of the following menus is disĆ played depending on the selection of time slot half. Bits value? 1234 1101 e.g.

Bits value? 5678 1101 e.g.

Selection 6,9,u,2,3,7,m,11010011,0101 allocates the fixed data word 11010011 to the bus, to the time slot m, and the fixed data word 0101 to time slot 16 as the signalling bits of the channel in question. Correspondingly, 6,9,u,2,3,8,33,1001 allocates data word 1001 towards the 2M interface, to bits B1-B4 of time slot 1.


6,9,u,2,8

CU 24012 / CU 24013 CS 24062 II/4 Page 29

Remove all allocations

The effect of selection 6,9,u,2,8 is the same as that of 6,9,u,2,2 but the seĆ lection affects now all defined time slot allocations. 6,9,u,2,9

Reserved TS:s on BUS

Selection 6,9,u,2,9 displays the numbers of those time slots in the bus to which allocations have been defined. 6,9,u,3

Synchronization output

Synchr. output: 0 Display 1 *Tx BUS CLK & Tx 2M CLK 2 Rx BUS CLK 3 Rx 2M CLK 4 Rx 2M CLK/ fault masked

Selection 6,9,u,3,0 displays the selected outgoing synchronization signal. By selection 6,9,u,3,1, the Tx busclock signal is selected to thesynchronizĆ ation output. The clock signal is the same as the Tx clock of e.g. the DMĂ2ĆMUX 2M interface. By selection 6,9,u,3,2, the Rx bus clock signal is selected to the synchronĆ ization output (e.g. DM 2ĆMUX 2M interface Rx clock). By selection 6,9,u,3,3, the clock signal regenerated from the 2M interface is selected to the synchronization output. If the 2M is missing, the Rx bus clock signal is selected as the clock signal. By selection 6,9,u,3,4, the clock signal regenerated from the incoming 2M interface is selected as above, but in case the incoming signal is faulty with an error ratio BER-3 or worse (fault category >3), the synchronization output signal is disconnected completely.


6,9,u,4

CU 24012 / CU 24013 CS 24062 II/4 Page 30

MUX settings

The MUX settings define theTx timing and fixed channel delaysrequired by the n x 64k allocations in the DIU2M 2M interface.

MUX settings: 1 Tx timing 2 Fixed TS delay

6,9,u,4,1

Tx timing

The Tx timing selections affect the operation of the unit only when the DM 2ĆMUX is used. Tx timing: 0 Display 1 *MUX Tx CLK 2 MUX Rx CLK

Selection 0 (6,9,u,4,1,0) displays the current selection. Selection 1 (6,9,u,4,1,1) sets the MUX Tx clock as the timing source for the DIU2M 2M interface. Selection 2 (6,9,u,4,1,2) connects the DM 2ĆMUX Rx clock through the equipment as the Tx direction timing of the DIU2M. By using this selecĆ tion, it is possible to have different timing sources for different transĆ mission directions when the DM 2ĆMUX is synchronized with the DIU2M Rx clock via the synchronization interfaces. 6,9,u,4,2

Fixed TS delay

Fixed TS delay: 0 Display 1 In use 2 *Not in use

Selection 0 (6,9,u,4,2,0) displays the current selection. By selection 1 (6,9,u,4,2,1) the length of the channel delay is forced apĆ proximately to two frames and free allocation of time slots in nx64k conĆ nections is allowed. NOTE Free allocation of n x 64k connections is availĆ able only if the HW version is 06A or newer.


CU 24012 / CU 24013 CS 24062 II/4 Page 31

Selection 2 (6,9,u,4,2,2) sets the delay to minimum when the channel time slot is not changed between the bus and the 2M interface. When n x 64k connections are made, time slot interleaving is not allowed, or if it is done, the time slot shift must be the same size and to the same direction for all time slots. 6,9,u,5

2M interface

2M settings: 0 Display 1 Set NOKIA defaults 2 Use of CRC 3 Use of TS0 bits 4 Fault consequences 5 SWAIS 6 Use of 2M-interf. 7 Use of MF 8 BER -6 alarm 9 Signal to MEAS-output 10 TS16/F0 bits

6,9,u,5,0

Display

Selection 6,9,u,5,0 displays the settings of the 2M interface. 6,9,u,5,1

Set NOKIA defaults

Selection 6,9,u,5,1 sets the NOKIA defaults. In the menus, the default settings are marked with an asterisk (*). The default settings are the following: CRC:

in use

TS0 bits Data channel B4 B5 B6 B7 B8

not in use fixed '1' fixed '1' fixed '1' fixed '1' fixed '1'


CU 24012 / CU 24013 CS 24062 II/4 Page 32

Fault consequences: BER-3 alarm

FEA AIS Fault in Tx Tx FEA SWAIS 2M interface Multiframe BER-6 alarm MEAS output signal

A+S+AIS+FEA , i.e. alarms A and S, AIS to channels and alarm bits B3 and B6 to far end S alarm S alarm No alarm Rx fault in use in use in use not in use Tx 2M data

TS16/F0 bits

fixed '1' fixed '1' fixed '1'

B5 B7 B8 6,9,u,5,2

Use of CRC

CRC: 0 Display 1 *CCITT R.B Modif. 2 CCITT B.B 3 Not used

Selection 0 (6,9,u,5,2,0) displays the current CRC operating status. By selection 1 (6,9,u,5,2,1) the CRC is taken into use. The CRC block errors are indicated to the far end by forcing the E bit into state '1'. By selection 2 (6,9,u,5,2,2) the CRC is taken into use in accordance with the CCITT (nowadays ITUĆT) Recommendations. The CRC block errors are indicated to the far end by forcing the E bit into state '0' . By selection 3 (6,9,u,5,2,3) the CRC is taken out of use.


6,9,u,5,3

CU 24012 / CU 24013 CS 24062 II/4 Page 33

Use of TS0 bits

TS0 bits usage: 0 Display 1 Data channel 2 *Fixed '1' 3 Fixed '0'

The use of TS0 bits B4-B8 is displayed by selecting 6,9,u,5,3,0. By selecting 1 (6,9,u,5,3,1), the data channel usage menu will be disĆ played: Data Channel: 0 1 2 3 4

Display *Not in use Sampl. rate 4 kHz Sampl. rate 8 kHz Sampl. rate 16 kHz

By selection 0 (6,9,u,5,3,1,0) the use of data channel is displayed. Selection 1 (6,9,u,5,3,1,1) removes thedata channel from use (default setĆ ting). By selections 2-4 (6,9,u,5,3,1,2-4) the sampling rate for the data chanĆ nel is set. If the sampling rate is chosen to be 4 kHz, the data channel reĆ serves TS0/B8 for its use. If 8 kHz is chosen, bits B7&B8 will be reserved and when the sampling rate is 16 kHz, bits B5-B8 are used by the data channel. The data channel can be activated simultaneously in several DIU2M units if their HW unit versions are 04A or newer and the SW verĆ sions 03A or newer. After selections 2 or 3 (6,9,u,5,3,2 or 3) the target bit is selected: Select bits: 4...8

Selection b (6,9,u,5,3,2,b) is used for selecting '1' (default setting) as the fixed state of TS0 bit Bb (b = 4...8) in the 2M outputframe (providingthat the bit b has not already been defined for data channel usage).


CU 24012 / CU 24013 CS 24062 II/4 Page 34

Selection b (6,9,u,5,3,3,b) is used for selecting '0' as the fixed state of TS0 bit Bb in the 2M output frame (providing that the bit b has not already been defined for data channel usage). 6,9,u,5,4

Fault consequences (BER-3, FEA, AIS, Fault in Tx, Tx FEA) Fault consequences: 1 Error rate >1E-3 2 Far-end alarm 3 AIS alarm 4 Fault in Tx 5 Tx FEA

6,9,u,5,4,1

Error rate > 1E-3

Error rate > 1E-3: 0 Display 1 *A+S+AIS+FEA 2 A-alarm 3 B-alarm 4 No alarm

By selection0 (6,9,u,5,4,1,0) theconsequencesdefined fora BER-3 fault are displayed. Selection 1 (6,9,u,5,4,1,1), default setting, causes alarms A and S to be generated and AIS to be connected to channels to indicate the detected fault condition. Alarm bits B3 and B6 are sent to the far end. By selection 2 (6,9,u,5,4,1,2) a BER-3 fault causes alarm A but the reĆ ceived signal still goes to the channels. This selection could be used when a very poor transmission path is to be utilized and it is to be ensured that the outages in the multiplex equipment are prolonged as little as possible. Selection 3 (6,9,u,5,4,1,3) differs from the previous one in that the fault only causes alarm B. Selection 4 (6,9,u,5,4,1,4) causes theerror ratio >1E-3 to have no conseĆ quences. It is not seen even on the equipment fault display.


6,9,u,5,4,2

CU 24012 / CU 24013 CS 24062 II/4 Page 35

FarĆend alarm consequences

FEA consequences: 0 Display 1 *S alarm 2 B+S alarm 3 A+S alarm

By selection 0 (6,9,u,5,4,2,0) the alarm consequences of a farĆend alarm (FEA) fault caused by alarm bit TS0/B3 are displayed. By selection 1 (6,9,u,5,4,2,1) a default setting is made. The alarm received from the far end causes alarm S to be generated, which means that the services of the equipment are not available due to a fault detected in the far end. Selection 2 (6,9,u,5,4,2,2) causes alarm B, in addition to alarm S, to be generated as the result of a farĆend alarm. Selection 3 (6,9,u,5,4,2,3) causes alarm A, in addition to alarm S, to be generated as a result of the farĆend alarm. The selection is used when the farĆend station is not supervised, the supervision being performed via the near end. 6,9,u,5,4,3

AIS alarm consequences

AIS alarm consequences: 0 Display 1 *S alarm 2 B+S alarm

By selection 0 (6,9,u,5,4,3,0) the fault consequence set for the AIS signal is displayed. By selection 1 (6,9,u,5,4,3,1) a default setting is made. An identified AIS signal causes alarm S only; the fault has already been detected someĆ where else. By selection 2 (6,9,u,5,4,3,2) the alarm classification is changed from norĆ mal so that the AIS causes alarm B, in addition to alarm S, to be generĆ ated.


6,9,u,5,4,4

CU 24012 / CU 24013 CS 24062 II/4 Page 36

Fault in Tx

Under this function the user may define the consequences for a situation where all signalling bits of one of the channels 1-15 in 2M transmit direcĆ tion are zeros (abcd = 0000).

Fault Tx: 0 Display 1 B alarm 2 * No alarm 3 Not in use

Selection 0 (6,9,u,5,4,4,0) displays the current alarm selection. When option 1 (6,9,u,5,4,4,1) is selected, the transmit channel signalling 0000 is replaced by 0001 and a B alarm is activated. When option 2 (6,9,u,5,4,4,2) is selected, the signalling of the transmit channel is replaced by 0001 but in this case no alarm is generated. When option 3 (6,9,u,5,4,4,3) is selected, the sending of 0000 signalling is enabled on channels 1-15. 6,9,u,5,4,5

Tx FEA active

By this function, information on the Rx direction fault in the DM 2ĆMUX can be transferred to the DIU2M output. Tx FEA active: 0 Display 1 *Rx fault 2 Rx or MUX Rx fault

By selection 0 (6,9,u,5,4,5,0) the current selection is displayed. With selection 1 (6,9,u,5,4,5,1) a farĆend alarm is activated only by the DIU2M Rx direction faults. When selection 2 (6,9,u,5,4,5,2) has been made, also a fault in the DM 2ĆMUX Rx direction (fault category >3) or a received farĆend alarm actiĆ vate a DIU2M Tx farĆend alarm.


6,9,u,5,5

CU 24012 / CU 24013 CS 24062 II/4 Page 37

Freezing of SWAIS

SWAIS: 0 Display 1 *Enabled 2 Disabled

Option 0 (6,9,u,5,5,0) displays the current selection. By selection 1 (6,9,u,5,5,1) the signalling of the incoming channel is replaced by 1111 and the channelĆspecific freezing is activated in fault situations. By selection 2 (6,9,u,5,5,2) the signalling of the incoming channel is actively replaced by AIS. This means that in addition of replacing the sigĆ nalling by 1111, the channelĆspecific freezing bit is momentarily forced into state 0. 6,9,u,5,6

Use of 2M interface

The selection defines whether the 2M interface is in use or not (i.e. whether it sends AIS to the interface and channels).

Use of 2M: 0 Display 1 *Used 2 Not used

Selection 0 (6,9,u,5,6,0) displays the use of 2M interface. Selection 1 (6,9,u,5,6,1) sets the 2M interface into use (e.g. under fault supervision). Selection2(6,9,u,5,6,2)setsthe2Minterfaceoutofuse.Atthesametime, the AIS signal is connected to the channels and 2M AIS is connected toĆ wards the interface, and the fault supervision concerning the interface is ended.


6,9,u,5,7

CU 24012 / CU 24013 CS 24062 II/4 Page 38

Use of MF

MF: 0 Display 1 *Used 2 Not used

Selection 0 (6,9,u,5,7,0) displays the use of the multiframe at the 2M inĆ terface. Selection 1 (6,9,u,5,7,1), default setting, sets the multiframe into use at the 2M interface. Selection 2 (6,9,u,5,7,2) releases time slot 16 from signalling use. 6,9,u,5,8

BER-6 alarm

BER-6 alarm: 0 Display 1-254 sec. count time 255 *Disable alarm

Selection 0 (6,9,u,5,8,0) displays the setting parameters of the BER-6 alarm. Selection 1-254 (6,9,u,5,8,1-254) sets the count time of the BER-6 fault if CRC is used. Selection 255 (6,9,u,5,8,255) disables the BER-6 alarm. 6,9,u,5,9

Signal to MEAS output

MEAS-output: 0 Display 1 *Tx 2M data 2 Rx 2M data 3 Tx 2M CLK 4 Rx 2M CLK


CU 24012 / CU 24013 CS 24062 II/4 Page 39

Selection 0 (6,9,u,5,9,0) displays the signal selected for the measurement output. Selection 1 (6,9,u,5,9,1) selects the Tx direction data signal. Selection 2 (6,9,u,5,9,2) selects the Rx direction data signal. Selection 3 (6,9,u,5,9,3) selects the 2048 kHz clock signal used in the Tx direction. Selection 4 (6,9,u,5,9,4) selects the 2048 kHz clock signal regenerated from the Rx direction. If the incoming 2M is missing, the clock signal will be that of the transmitter. 6,9,u,5,10

TS16/F0 bits

TS16/F0 bits: 0 Display 1 *Fixed 1 2 Fixed 0

Selection 0 (6,9,u,5,10,0) displays the setting of bits 5, 7 and 8 of TS16/F0. Selection 1 (6,9,u,5,10,1) can be used to set the selected TS16/F0 bit into fixed "1" state. Selection 2 (6,9,u,5,10,2) sets the selected bit into "0" state. Selections 1 and 2 display the menu below defining the TS16/F0 bit (bits) for which the selected fixed state is set: Select bit: 5, 7 or 8


6,9,u,7

CU 24012 / CU 24013 CS 24062 II/4 Page 40

Timeout for controls

Under this function, a time is selected for which the controls are effective without being refreshed; the default setting is 10 minutes.

Timeout for controls: 0 Display 1...65000 min

Selection 0 (6,9,u,7,0) displays the timeĆout selected for the controls of the unit. Any other selection within the allowable limits sets the timeĆout in minutes. 6,9,u,8

Read/Save DIU2M settings Read/Save all: 0 Display ID 1 Read settings 2, Save settings

Selection 0 (6,9,u,8,0) displays the unit ID in decimals. Reading and savĆ ing is possible only between such units that have the same ID. By selection 1 (6,9,u,8,1) the settings of the DIU2M unit are read into the Service Terminal (emulator) data buffer (numbers appear on the disĆ play). By selection 2,* (6,9,u,8,2,*), (DIU2M settings as the contents of the data buffer) the settings contained in the buffer are saved into the unit conĆ cerned. Copying from one unit to another is thus performed by reading the setĆ tings from unit A by selection 1, after which a connection is established to the unit B, and option 2,* (* = DATA key) or TOP 6,9,u,8,2,* is selected.


4.5

CU 24012 / CU 24013 CS 24062 II/4 Page 41

Measurements 7,9,u

DIU2M measurements

DIU2M measurements: 1 Supply voltages

7,9,u,1

Voltage measurements

Voltage measurements: 1 +5 V 2 -5 V

After the selections, it is possible to read the value of the operating voltĆ age in question and calibrate the measurement system to the measured value. Selections 1 and 2 (7,9,u,1,1/2) display the menu:

Supply voltage 5 V: 1 Display voltage (float) 2 Calibration

By selection 1 (7,9,u,1,1/2,1) the value of the +5 V operating voltage measured by the unit is displayed. After selection 2 (7,9,u,1,1/2,2) the measured operating voltage can be given (mV).


4.6

CU 24012 / CU 24013 CS 24062 II/4 Page 42

Statistics This function includes statistics and error counters maintained by the equipment itself. 8,9,u

DIU2M statistics

DIU2M statistics: 1 2M signal quality 2 2M error counters 3 CPU reset counter

8,9,u,1

2M signal quality

DIU2M signal quality: 1 Reset statistics 2 TT, AT, ES, SES, DM 3 Total time 4 Available time 5 Err. secs. 6 Severely err. secs. 7 Degraded minutes 8 S (unav) /S (tot) 9 S (err) / S (ava) 10 S (sev) / S (ava) 11 M (degr) / M (ava)

Selection 1 (8,9,u,1,1) resets the counters and starts the counting again. The NMS response of selection 2 (8,9,u,1,2) displays the floating point parameter values of the statistics counters. These parameters can be used when counting statistics with the Network Management System (NMS). The given values include the total time (given in seconds), available time (given in seconds), errored seconds, number of seconds with BER > E-3 and degraded minutes. Selections 3...7 display the floating point value of the statistics counter in question. Selections 8...11 display four ratios computed on the basis of the above mentioned statistics counter contents.


8,9,u,2

CU 24012 / CU 24013 CS 24062 II/4 Page 43

2M error counters

2M error counters: 0 Display all 2 Frame sync. losts 3 Errored framewords 4 Errored CRC-blocks 5 Reset counters

Selection 2 (8,9,u,2,2) indicates the number of frame synchronization losses since the previous counter reset. Selection 3 (8,9,u,2,3) indicates the number of errored frame words. Selection 4 (8,9,u,2,4) indicatesthe numberof detected CRC block errors since the previous counter reset. If only few errors occur on the transĆ mission path, the number of CRC block errors is approximately the same as the number of bit errors. Selection 5 (8,9,u,2,5) resets the error counters. In addition, selection 0 (8,9,u,2,0) displays the reading of all three counters simultaneously. 8,9,u,3

CPU reset counter

CPU reset counter: 0 Display 1 Reset

Selection 0 displays the number of CPU resets in the unit since the previĆ ous counter reset. Selection 1 resets the counter.


4.7

CU 24012 / CU 24013 CS 24062 II/4 Page 44

Testing The testing menu contains test options performed on the unit, some of which can affect the communication. 9,9,u

DIU2M Testing

DIU2M Testing: 4 A/D tests 5 Memory tests 6 Memory operations 7 RUNTEST

9,9,u,4

A/D test

Selection 9,9,u,4 starts the A/D converter test of the DIU2M unit proĆ cessor. The lower one of the responses given below indicates that a fault has been detected in the tested function. A/D OK

A/D # OK

9,9,u,5

Memory tests

Memory tests: 1 RAM 2 EPROM 3 EEPROM

Selection 1 (9,9,u,5,1) tests the RAM memory circuit of the DIU2M unit processor environment. The lower one of the responses given below indiĆ cates that a fault has been detected: RAM OK

RAM # OK


CU 24012 / CU 24013 CS 24062 II/4 Page 45

Selection 2 (9,9,u,5,2) starts the EPROM memory test in the DIU2M unit. As a response to the selection, a text indicating the duration of the test (10 sec) is obtained. When the test is running, the yellow service LED is lit and the A and S alarm are active. The result is obtained by starting the test again. The lower one of the responses given below indicates that a fault has been detected. EPROM OK

EPROM # OK

Selection 3 (9,9,u,5,3) starts the EEPROM memory test in the DIU2M unit. As a response to the selection, a text indicating the duration of the test(10 min) isobtained. When the test is running,the yellowservice LED is lit and the A and S alarm are active. The test does not disturb the operĆ ation of the unit. The result is obtained by starting the test again. The lower one of the responses given below indicates that a fault has been deĆ tected. EEPROM OK

EEPROM # OK

9,9,u,6

Memory operations

Memory operations: 1 Read byte 2 Write byte in RAM 3 Read 8 bytes 4 Write byte in EEPROM

By selection 1 (9,9,u,6,1) a text prompting for the read address is obĆ tained: Give memory addr.: 0...65535

C33124_20-DIU2M

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