OptiX RTN 950 Radio Transmission System V100R006
IDU Quick Installation Guide (Indoor)
Issue: 02 Date: 2013-10-15
HUAWEI HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2013. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions and other Huawei trademarks are tradem arks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied .
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Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China
Website:
http://www.huawei.com
Email:
[email protected]
Commissioning Commissionin g Process
Start
Page 35
Page 36
Powering On the Equipment
Configuring the NE Data (by Using the Web LCT)
Page 36
Pages 37 to 39
Aligning the Antennas
Page 39
Checking the Radio Link Status
End
1
Configuring the NE Data (by Using the Hand-Held Tool)
Pages 37 to 38
Aligning the SinglePolarized Antennas
Pages 38 to 39
Aligning the DualPolarized Antennas
Precautions
NOTE This document provides quick guidelines for hardware installation. This document does not describe pre -delivery assembly. This document describes only procedures for onsite installation.
CAUTION Electrostatic Discharge Wear ESD gloves or an ESD wrist strap prior to contact with the equipment or before handling the plug-boards, boards, and IC chips to prevent damage to sensitive components caused by electrostatic discharge from the human body. Ensure that the other end of the ESD wrist strap is properly grounded.
CAUTION Binding Cables Binding intervals between cable ties or optical fiber bindi ng straps inside the cabinet cannot exceed 250 mm. (The distance cannot exceed 200 mm for user cables). Binding intervals between cable ties for all cables and corrugated pipes outside the cabinet are determined according to the distance between the two horizontal beams. If the cable trough does not contain any beams, the binding intervals between cable ties cannot exceed 250 mm.
CAUTION Pre-installation Check Check the telecommunications room, cabinet, power supply, ground wires, opti cal cables, and associated facilities prior to installation. Start the installation according to the engineering design documents after verifying that conditions are met.
2
Instructions and Precautions for Handling Boards CAUTION Do not hold a b oard without hand protection. Wear an ESD wrist strip or ESD gloves before handling a board. Wearing ESD gloves
Wearing an ESD strip
Holding a board without hand protection
CAUTION Hold the front panel of a board with hands.
CAUTION Insert filler panels into vacant slots on an NE to prevent foreign matters from getting into the NE, which may result in faults on the NE. Boards are fragile and valuable. Wh en handling or placing a board, exercise caution and put it into a dedicated packing box.
3
Instructions and Precautions for Handling Power Cable Terminals
1 2 1 2
1
1
2
2
Press the front of the red latch.
Properly move the red latch outwards.
CAUTION Do not pick up the tail end of the red latch by using a finger or a screwdriver to avoid damage.
4
Precautions for Handling the Toggle Lever Switch •Position and description of the toggle lever switch O: OFF
CAUTION Turn the toggle lever switch only after gently pulling it out.
I : ON
•Turning on the switch sw itch 1
1 Pull the switch out gently.
3
2
2 Turn the switch.
3 Release the switch.
2
3
•Turning off the switch sw itch 1
1
Pull the switch out gently.
2
Turn the switch.
5
3
Release the switch.
Precautions for Handling IF Jumpers CAUTION Connect or disconnect an IF jumper only after powering off the ODU.
2
1
Power off the ODU.
Do not connect or disconnect an IF jumper when the ODU is powered on.
Connect or disconnect the IF jumper.
Precautions for Handling IF Cables
CAUTION
CAUTION
Connect or disconnect an IF cable only after powering off the ODU.
Do not connect or disconnect an IF cable when the ODU is powered on.
1
Power off the ODU.
2
Connect or disconnect the IF cable.
6
Precautions for Handling IF Boards CAUTION Remove or insert an IF board only after powering off the ODU.
1
2
3
Remove the IF board.
3
Insert the IF board.
Power off the ODU.
Disconnect the IF jumper.
Remove or insert the IF board.
CAUTION Do not remove or insert an IF board when the ODU is powered on.
7
Tools for Installation
Long measuring tape
Level
Phillips screwdriver screwdriver
Socket wrench
Torque wrench
Hex key
COAX crimping tool
Wire clippers
RJ45 crimping tool
Diagonal pliers
Cold press pliers
Needle-nose Needle-nose pliers
File
Multimeter
Heat gun
Wire stripper
Bayonet wrench
Combination pliers
Hammer drill
Marker
ESD gloves
ESD wrist strap
Vacuum cleaner
Binding strap
Utility knife
Ladder
Insulation tape
8
Flat-head screwdriver screwdriver
Adjustable wrench
Claw hammer
Antistatic gloves gloves
Electric iron
Impact tool
Coax stripper
Network cable tester
Introduction to the RTN 950 Equipment
1 Ports
10
11
12
Input power port
External clock/time port
ODU power switch
10
Orderwire phone port
NM/COM port
Ethernet service port
Optical port
11
External alarm port
NE concatenation port
IF port
Synchronous/Asynchronous data port
12
E1 port
NOTE Based on different board configurations, the positions of the actual IDU p orts may be different from the positions shown in the figure.
2 Installation Holes on Both Sides of the Chassis Holes for installation in the T63/T66/N66T cabinet
Holes for installation in the N63E/19-inch cabinet
NOTE Before installing the chassis in the ETSI cabinet, adjust the h oles for installing mounting ears based on the type of the cabinet.
9
Installing the RTN 950
1 Installing the Chassis in the 19-Inch Cabinet Fixing Floating Nuts
Floating nut
Installation hole
NOTE When tightening floating nuts, ensure a minimum of 25 mm space on the left and right sides of the RTN 950 for ventilation.
Removing Screws
NOTE Store the removed screws properly for installing PGND cables.
10
Installing the Chassis in the Cabinet
Installing PGND Cables
To the ground point on the column of the cabinet or the indoor ground bar
M6
M4
2.0±0.2 N·M
1.4±0.14 N·M
NOTE Install the cable tray if provided.
Connect PGND cables by using the removed screws.
2 Installing the Chassis in the ETSI Cabinet Installing Mounting Ears
Fixing Floating Nuts
NOTE Before installing the chassis in an ETSI cabinet, adjust the holes for installing mounting ears based on the type of the cabinet. Installation hole M6 screw assembly
Floating nut
M6
When tightening floating nuts, ensure a minimum of 25 mm space on the left and right sides of the IDU for ventilation.
Mounting ears 3.0±0.3 N·M
11
Installing the Chassis in the Cabinet
Installing PGND Cables
To the ground point on the column of the cabinet or the indoor ground bar
M6
2.0±0.2 N·M
M4
1.4±0.14 N·M
NOTE
Connect PGND cables by using the removed screws.
Install the cable tray if provided.
Wall-Mounting ting the Chassis 3 Wall-Moun Removing Mounting Ears
Marking and Drilling Holes (1) Place the chassis on the wall and then mark the positions of the holes for install ing mounting ears. Drill the holes in the marked positions and install the bolts. After the installation, ensure a minimum of 50 mm space on the upper and lower sides of the IDU for ventilation. ≥300 mm
8
12
Installing the Cable Tray (Optional)
Installing Mounting Ears
NOTE
NOTE
If the cable tray is provided, install it according to the illustration in the figure. Otherwise, go to Step g.
Rotate mounting ears to 90 degrees and install them in the direction shown in the figure.
Installing the Cable Tray (Optional)
Installation Effectiveness
13
Marking and Drilling Holes (2) Place the equipment on the wall and then mark the positions of the holes for installing mounting ears. Remove the equipment and drill the holes at the marked positions.
8
Drill 8 mm diameter holes with a depth ranging from 52 mm to 60 mm.
Mark the hole positions.
NOTE When wall-mounting the chassis, place the fan assembly in the lower part of the chassis for heat dissipation.
Installing the Chassis on the Wall
Installing PGND Cables
Big flat washer
M4
Nut
Small flat washer
Fan assembly M6x60 expansion bolt
14
1.4±0.14 N·M
PGND cable
4 Desk-Mounting the Chassis Installing Plastic Feet
Installing PGND Cables
Remove mounting ears and install plastic feet.
Connect PGND cables by using the removed screws.
PGND cable
M4
1.4±0.14 N·M
NOTE
Plastic foot
Do not place any items around the ventilation holes on the two sides of the cabinet to avoid impacts on heat dissipation.
Optional: Installing the E1 Panel
1 Fixing Floating Nuts
Floating nut
Installation hole
15
2 Fixing the E1 Panel
3 Installing PGND Cables on the E1 Panel To the ground point on the column of the cabinet or the indoor ground bar
16
Optional: Installing Transfer Brackets for IF Jumpers Installing IF Connectors Installing 12 IF Connectors
1
2
Installing Two IF Connectors
NOTE Transfer brackets for two IF jumpers can be installed on walls, but cannot be installed in 19 -inch cabinets and ETSI cabinets.
17
Installing Transfer Transfer Brackets for IF Jumpers Installing Transfer Brackets for IF Jumpers in 19-inch Cabinets
Installing Mounting Ears
Installing the Transfer Bracket in the Cabinet
Installing Transfer Brackets for IF Jumpers in ETSI Cabinets
Installing Mounting Ears
Installing the Transfer Bracket in the Cabinet
18
Installing Transfer Brackets for IF Jumpers on Walls Installing Transfer Brackets for 12 IF Jumpers
Installing Mounting Ears
Installing the Transfer Bracket on the Wall Method 2
Method 1 M6x60 expansion bolt
Tapping screw Nut
Small flat washer
Big flat washer
NOTE When installing transfer brackets for two IF jumpers, use the method of installi ng transfer brackets for 12 IF jumpers.
19
Installing Boards 1
2
3
4
Guide rail
Loosen the screws on the filler panel an d remove the filler panel. Hold the ejector levers on the panel with hands and raise them to form an angle of approximately 45 degrees between the ejector levers and the panel. Push the board gently along the guide rail until the board is secure.
Lower the two ejector levers of the board.
Tighten the screws on the panel.
NOTE Before installing and removing/inserting a board, wear an ESD wrist strap or ESD gl oves. Before you insert a board, ensure that the slot is correct. If it is difficult to insert the board, stop the operation.
Installing IDU Cables
1 Installing PGND Cables
When installing a PGND cable in the ETSI cabinet, connect the PGND cable to the ground point on the left side of the chassis.
20
When installing a PGND cable in the 19 -inch cabinet, connect the PGND cable to the ground point of the left mounting ear of the chassis.
2 Installing Power Cables 1
1 Insert the power cables into the DC connector based on the pin assignment. You do not need to prepare the power cables on site if they were prepared before delivery.
CAUTION After fastening a cable, check whether the cable cable core is exposed exposed outside the power cable connector terminal. If the cable core is exposed, re-route th e cable into the power cable connector. If the cable core is still exposed after you re-route the cable, peel the cable again. If the AC power box (ETP 4830) is used, the IDU needs to use the BGND power cable and -48 V power cable that are delivered with the AC power box. For detail s on the AC power box and its cables, see the IDU hardware description.
Check the fuse current of the external power supply.
Check the voltage and polarity of the external power supply.
Recommended Current Value of the External Fuse
Rated Voltage of the Input Power
Allowable Voltage Range
–48 V
–38.4 V to –57.6 V
–60 V
–48 V to –72 V
20 A
NOTE The recommended fuse capacity of 20 A can meet requirements under the maximum power consumption. Customers can compute the fuse capacity according to the actual power consumption. The fuse capacity should be larger than or equal to (total power consumption x 1.5)/(rated voltage x 87.5%). For example, when the rated power supply is -48 V and the total power consumption of the IDU is less than or equal to 420 W, the fuse capacity can be set to 15 A.
NEG(-)
RTN(+)
1
3 2 OUTPUT
4
A
ON
B
1
3 2 OUTPUT
4
ON R TN 1 (+ ) RTN2(+) N E G1 ( -) NEG2(-)
OFF
INPUT 3 2A 2A
3 2A 2A
20A
OFF 3 2A 2A
20A
21
3 2A 2A
20A
20A
Ensure that the circuit breaker of the PDU is set to the OFF state. Insert the DC connector into the power port of the chassis. Ensure that the two groups of power cables are connected to different wiring terminals, and then tighten the screws of the power connector and the chassis.
CAUTION
PIU boards in 1+1 hot backup mode
If an external power box is used, cut off the input of the power box before you connect power cables.
3 Installing E1 Cables Optional: Connecting E1 Cables to the External Equipment The MD1, ML1, SP3D, and SP3S boards provide the E1 port.
M2.5
SP3D board 0.4±0.03 N·M
NOTE For information about the pin assignment of an E1 cable, see the related table deli vered with these E1 cables or the cable part in the Hardware Description. For a 1.6 mm diameter E1 cable, use a type 75-1-1 connector and a 2 .5 mm or 1.7 mm COAX crimping tool when assembling the DDF-side connector of the E1 cable.
22
Optional: Connecting E1 Cables to the E1 Panel
SP3D board
Optional: Connecting E1 Cables to the TCU6 Board
TCU6 board SP3S board
NOTE The TCU6 board, which performs conversion between DB44 ports and RJ45 ports of 6xE1 services, is generally used with the SP3S (120 ohms) board . By using Anea96 –DB44 E1 cables, the TCU6 board can perform perform conversion between Anea96 ports and RJ45 ports.
23
4 Installing Ethernet Service Cables The EFP8, EM6T, EM6TA, EM6F, EM6FA, and EMS6 boards provide the FE ports. The EM6T, EM6TA, EG4, and EG4P boards provide the GE electrical ports.
NOTE The Ethernet service port supports the MDI/MDI-X adaptive function. Therefore, you can assemble either a crossover cable or a straight-through cable. It is recommended that you assemble a straight-through cable.
Ethernet board
CAUTION By default, power over Ethernet is enabled at the 3/P1 and 4/P2 ports of EG4P boards. If power over Ethernet is not used, this function must be disabled at the ports using the Web LCT or U2000 to prevent the risks of damaging the interconnected equipment. After this function is disabled, the P1/P2 indicators are off.
5 Installing XPIC Cables The ISX2, IFX2, and ISV3 (XPIC function enabled) boards support the XPIC function . X-OUT X-IN
X-OUT X-IN
XPIC IF board
NOTE The IN port on one XPIC IF board must be connected to the OUT port on the other XPIC IF board.
CAUTION •If the XPIC function is disenabled on an ISX2 or IFX2 board, use a short XPIC cable to connect the IN and OUT ports on the board. Otherwise, board performance will be affected. •If the XPIC function is disenabled on an ISV3 board, do not use a short XPIC cable to connect the IN and OUT ports on the board. Otherwise, the board performance will be affected.
24
6 Installing IF Jumpers Installing an IF Jumper The ISV3, IF1, ISU2, ISX2, IFU2, and IFX2 boards provide the IF port.
ODU switch
CAUTION Before installing an IF jumper, turn off the ODU switch on the IF board. If an RG-8U IF cable or a 1/2-inch IF cable is used, an IF jumper is required to connect the IF cable and IDU; if a 5D IF cable is used, the 5D IF cable is directly connected to the IDU.
Optional: Connecting the IF Jumper Directly to the IF Cable
IF jumper
IF cable
NOTE When connecting an IF jumper to an IF cable, you must test the connectivity of the IF cable. On the equipment configured with IF 1+1 protection, the IF cable of the active ODU must be connected to the IF jumper of the active IF board, and the IF cabl e of the standby ODU must be connected to the IF jumper of the standby IF board. If the XPIC IF board is used, the IF cable connected to the vertically polarized ODU must be connected to the IF jumper on the IF board that processes vertically polarized waves, and the IF cable connected to the horizontally polarized ODU must be connected to the IF jumper of the IF board that processes horizontally polarized waves.
25
Optional: Connecting the IF Jumper to the IF Cable Using a Transfer Bracket Installation Effectiveness in the 19-Inch Cabinet
Installation Effectiveness in the ETSI Cabinet
26
Installation Effectiveness on the Wall • Installation Effectiveness of Wall-Mounted Transfer Brackets for 12 IF Jumpers
• Installation Effectiveness of Wall-Mounted Transfer Brackets for Two IF Jumpers
27
7 Installing Fibers Precautions
CAUTION When installing or maintaining fibers, do not look into the optical port without eye protection. See Figure 1. Coil up the inter-office fibers on th e ODF and then route them into the cabinet. Do not coil up external fibers in the cabinet.
NOTE When routing fibers, take proper measures to avoid any damage to fiber connectors After installation of the fibers, place protective caps on to the idle optical ports, and place fiber caps on to the idle fibers. See Figure 2. Figure 1
Figure 2
Fiber with a short protective tube
Fiber cap
Pluggable optical module
Dustproof cap
NOTE For a closed corrugated pipe, take protective measures and then route fibers into through corrugated pipe. For an open corrugated pipe, route fibers through the corrugated pipe and then take protective measures. After routing fibers through a corrugated corrugated pipe, wrap PVC insulation insulation tapes around the cuts of the corrugated pipe. Do not feed a large number of fibers in a corrugated pipe. It is recommended that you feed not more than sixty 2 mm diameter fibers in an open corrugated pipe and not more than twenty 2 mm diameter fibers in a closed corrugated pipe (See Figure 3). The corrugated pipe needs to be routed into the cabinet for approximately 10 cm (See Figure 4).
Figure 3
Figure 4
10 cm
28
Installing Fibers The CQ1, SL1D, SL1DA, EM6F, EM6FA, EMS6, EG4, and EG4P boards provide the optical port.
SL1D board
8 Installing STM-1e Cables The CQ1, SL1D, and SL1DA boards provide the STM-1e electrical port.
SL1D board
9 Installing NM Cables Installing NM Cables (for a Gateway NE) The CSH and CST boards provide the NMS/COM port.
NMS/COM port
NMS
29
Installing NM Cables (for Multiple Interconnected NEs at a Site)
EXT
NMS/COM
NOTE Assemble a crossover cable or a straight-through cable on site. Ensure that the interconnected network cables do not form a loop an d the standby CSH/CSTA board is not connected to another network cable.
10
Installing Orderwire Phone Cables
The AUX board provides the PHONE port.
PHONE port
30
11 Installing External Clock Cables Assembling External Clock Cables Based on the Pin Assignment
Pin 1
Color
Relationship
CLK/TOD1
White/Orange
Negative receive end of the external clock Twisted pair
2 3 6 4
Orange
Positive receive end of the external clock
White/Green
External time 1_N Twisted pair
Green
External time 1_P Negative transmit end of the external clock
Blue Twisted pair
5
White/Blue
7
White/Brown
Positive transmit end of the external clock External time 2_N Twisted pair
8
Brown
External time 2_P
Installing External Clock/Time Cables for the IDU The CSH and CST boards provide the CLK/TOD1 port and TOD2 port.
TOD2 port
CLK/TOD1 port
31
Asynchronous and Synchronous Data Cables 12 Installing Asynchronous Assembling Asynchronous and Synchronous Data Cables Based on the Pin Assignment Pin Assignment Pin 1 2 3 6 4 5 7 8
Color
Relationship
Function
White/Orange
Transmits asynchronous data signals. Twisted pair
Orange
Grounding
White/Green
Receives asynchronous data signals. Twisted pair
Green
Grounding
Blue
Transmits synchronous data signals (TIP). Twisted pair
White/Blue
Transmits synchronous data signals (RING).
White/Brown
Receives synchronous data signals (TIP). Twisted pair
Brown
Receives synchronous data signals (RING).
Installing Synchronous and Asynchronous Data Cables for the IDU The AUX board provides the F1/S1 port.
F1/S1 port
32
13 Installing External Alarm Cables Assembling External Alarm Cables Based on the Pin Assignment Pin
1 2 3 6 4 5
Color
Relationship
White/Orange
ALMO
ALMI External alarm signal input 1
Positive alarm signal output 1
Twisted pair Orange
Grounding
White/Green
Negative alarm signal output 1 Positive alarm signal output 2
External alarm signal input 2 Twisted pair
Green
Grounding
Blue
Negative alarm signal output 2
External alarm signal input 3
Positive alarm signal output 1
Twisted pair White/Blue
7
White/Brown
8
Brown
Grounding
Negative alarm signal output 1
External alarm signal input 4
Positive alarm signal output 2
Twisted pair Grounding
Negative alarm signal output 2
Installing External Alarm Cables for the IDU The AUX board provides the ALMI port and the ALMO port.
ALMO port ALMI port
33
14
Cable Layout Effectiveness
Cable Connections 7 9 4 1
3 2 6 11 8 10 5
PGND Cables
Ethernet Service Cables
NM Cables
10
Power Cables
IF Jumpers
Orderwire Phone Cables
11
E1 Cables
Fibers/STM-1e Cables
External Clock Cables
Asynchronous Asynchronous and Synchronous Synchronous Data Cables
External Alarm Cables
NOTE For information about how to install XPIC cables, see the "Install ing XPIC Cables" part.
Cable Layout Effectiveness
34
Powering On the Equipment
CAUTION Before powering on the equipment, ensure that the instal lation of the ODU is completed and the ODU switch on the IF board is set to the OFF state.
Red indicator: The fan is malfunctioning.
Green indicator: The fan is functioning properly.
Status Description of Indicators Indicator
Status
Description
PWR
Constantly on and green
The power supply is functioning properly.
Off FAN
The power supply fails.
Constantly on and green
The fan is functioning properly.
Constantly on and red
The fan is malfunctioning.
Off
The fan is not powered off.
Check and ensure that the STAT indicators on the system control, switching, and timing board are on in green color.
35
Configuring NE Data (by Using the Web LCT)
CSH board
NMS/COM
You can use the Web LCT to confi gure NE data, including basic data of the NE, IF/ODU information of the radio link, parameters for the IF ports, and p arameters for the ODU ports.
Configuring NE Data (by Using the Hand-Held Tool ) Connect the hand-held terminal to the NMS/COM port on the active system control, cross-connect, and timing board.
CSH board
NMS/COM
You can use the hand-held tool to configure NE data, including basic data of the NE,IF/ODU information of the radio link, parameters for the IF ports, parameters for the ODU ports, and DCN parameters.
36
Aligning Antennas
1 Aligning Single-Polarized Antennas Determine the azimuth of the antenna according to the in stallation position and height of the antenna. Adjust the elevation of the antenna to the horizontal position. Connect a multimeter to the RSSI port on the ODU at the local end and measure the voltage value VBNC.
NOTE The red line of the multimeter is connected to the pin, and the black line of the multimeter is connected to the inner wall (ground pin).
Elevation adjustment screw
Level adjustment screw
Retain the remote antenna secure. Adjust the level adjustment screw. At the local end, rotate the antenna widely in the horizontal direction.
a
If three signal peaks are tracked, adjust the azimuth of the antenna so that the received signal level (RSL) reaches the peak value at position 2.
b
If two signal peaks are tracked, adjust the azimuth of the antenna to the middle of positions 4 and 5. Then, adjust the elevation of the antenna so that the three signal peaks such as the signals on the line AA' can appear. Adjust the antenna so that the RSL reaches the peak value at position 2.
c
If one signal peak is tracked, adjust the azimuth of th e antenna to the middle of positions 6 and 7. Then, adjust the elevation of the antenna so that the three signal peaks such as the signals on the line AA' can appear. Adjust the antenna so that the RSL reaches the peak value at position 2.
37
Front view of the lines tracked at different elevations of the antenna
RSL value of each line
6 7
B A
7
6
C
C 5
4
B
2
3
A
'
5
4
'
'
1
C
C
B
B
'
'
2 1 A
3 A
'
Adjust the elevation adjustment screw. At the local end, gently adjust the elevation and azimuth azimuth until the RSL reaches the peak within the tracked range. Repeat Steps 3 to 4 to ensure that three signal peaks are tracked in both ho rizontal and vertical directions. When the local RSL reaches the maximum peak value, tighten the local anten na. Adjust the remote antenna to ensure that the RSL RSL at the local end and the RSL at the remote remote end reach the peak value. Check the status of the ODU indicator on the IF board. The ODU indicator on the IF board is off. If the ODU indicator on the IF board is yellow and blinks every 300 ms, continue aligning the antenna. Tighten all the screws of the antennas after th e alignment is completed.
2 Aligning Dual-Polarized Antennas NOTE If an OMT is used to connect the ODUs to the antenna in direct -mounting mode, align the antenna in the same method as that for aligning single -polarized antennas. If soft waveguides are used to connect the ODUs to the antenna in separate-mounting mode, follow the procedure to align the antenna:
Power off the vertically polarized ODUs at both ends of a radio link, power on the horizontally polarized ODUs at both ends of the radio li nk. This ensures that the antennas at both ends transmit horizontally polarized signals. Adjust the azimuth and elevation of the antennas at both ends by referring to th e description in “Aligning Single -Polarized Antennas”, and ensure that the main lobes of the h orizontally polarized signals are aligned with the antennas.
38
Use a multimeter to measure the RSL (P1) on the RSSI port of the horizontally polarized ODU at the local end. Power on the vertically polarized ODU at the local end. Use a multimeter to measure the RSL on the RSSI port of the vertically polarized ODU. Release the holder of the feed boom gently, and turn th e feed boom gently until the RSL reaches the minimum value (P2). The calculated XPD1 (XPD1 = P1 - P2) cannot be less than 30 dB. Record the current angle (D1) of the feed boom. Power off the horizontally polarized ODUs at both ends of the radio link, and power on the vertically polarized ODUs at both ends of the radio l ink. Adjust the azimuth and elevation of the antennas at both ends by referring to the description in “Aligning Single -Polarized Antennas”, and ensure that the main lobes of the vertically polarized signals are aligned with the antennas. Refer to Steps 3 and 4 to ensure that the calculated XPD2 (XPD2 = P3 - P4) is equal to or more than 30 dB. Record the current angle (D2) of the feed boom. Repeat Steps 1 to 6 to adjust the feed boom gently (ranging from D1 to D2), and ensure that XPD1 and XPD2 are equal to or more than 30 dB. Tighten all the screws of the antennas after the alignment is completed.
Checking the Radio Link Status
LINK indicator
Check the status of the LINK indicator on the IF board.
a b c d
If the LINK indicator is on (green), the radio link is functioning properly. If the LINK indicator is on (red), check whether the configuration data is correct. If the configurati on data is incorrect, configure correct data. If the LINK indicator blinks yellow at intervals of 300 ms, check whether the antennas are aligned properly. If the antennas are not aligned properly, realign the antennas. If the LINK indicator is off, check whether the l ogical units of the IF unit and the ODU have been added on the NMS. If yes, check for a fault in the IF jumper, IF cable, or the ODU.
39
Checking the Installation No.
What to Check For
1
The chassis must be installed securely in the position as specified in the engineering design documents.
2
Each chassis component does not have any paint drop, damage, or stain. Otherwise, re-paint or clean the component.
3
For a board inserted into the chassis, the screws on the front panel are tightened.
4
Filler panels are installed for vacant slots in the chassis.
5
Cable routes comply with the engineering design documents and facilitate maintenance and expansion.
6
Cables are not damaged, broken, or jointed in between.
7
Each core of the cables is tested for connectivity.
8
Cables are properly bound. Cable ties are installed at equal spacing and in the same direction. The excess of cable ties is trimmed off without remaining rough edges.
9
Signal cables are routed correctly in the cabinet.
10
Cables outside the cabinet are routed as follows: • The cables are placed tidily and are not cross -connected. • If a cabling ladder is used, the cables are bound onto the ladder beam tidily. If the cabling frame is 0.8 m or more higher than the cabinet top, a cabling ladder is available on th e cabinet top to support the cables and to ease stress.
11
Cable turns are smooth and have a great bending radius.
12
Cable labels are filled in correctly and attached securely. They are aligned and face to the same direction. Preferably, the labels are attached 2 cm away from the connectors.
13
The power cable and ground cable are routed separately from the signal cables.
14
Idle cable connectors are protected. For example, protective caps are installed on the idle connectors.
15
Protective tube for fiber jumpers are routed into the cabinet for 10 cm and bound securely.
16
The cuts of protective tubes for fiber jumpers are smooth. Otherwise, they need to be wrapped by an insulation tape.
17
Fiber jumpers are bound gently to ensure free move in the cable tie.
18
Connecting points of fiber jumpers are clean. Protective caps (plugs) are installed for idle fiber connectors and optical ports.
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Appendix Connecting Cables to a Power Cable Connector 1 Obtaining Tools, Cables, and a Power Cable Connector
Power cable connector
One -48 V blue power cable One 0 V black ground cable
Ruler (optional)
Diagonal pliers
Utility knife
Phillips screwdriver (M3 screw)
2 Peeling Cables 1
Use the 1:1 peeling indicator on one side of the power cable connector as the peeling length reference.
2
Use a pair of diagonal pliers to trim off one end of a -48 V power cable. Place the cable on the peeling length reference plane, and use a utility knife to make a mark on t he cable according to the 1:1 peeling indicator.
3
Peel the cable using the diagonal pliers.
12 mm 12 mm
12 mm Peeling length reference plane 1:1 peeling indicator (12 mm)
Cable core
1:1 peeling indicator (12 mm)
Note 4
Repeat steps 1-3 to peel a 0 V ground cable.
If a ruler is availabl e, you can use the ruler to measure a 12 mm peeling length after trimming off one end of a cable.
12 mm
Cable core
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Appendix Connecting Cables to a Power Cable Connector 3 Connecting Cables to the Power Cable Connector 1
2
Route a cable into the power cable connector.
Power Cable Connector Terminal
Cable
-
-48 V power cable (blue)
+
0 V ground cable (black)
Fasten the cable.
3
Pull the cable slightly. If the cable is loose, fasten it again. Pull the cable slightly.
M3 screw
Caution After fastening a cable, check whether the cable cable core is exposed exposed outside the power cable connector terminal. If the cable core is exposed, re-route the cable into the power cable connector. If the cable core is still exposed after you re-route the cable, peel the cable again. After the power switch switch is turned on, sparks may be generated at the exposed exposed cable core when when an inappropriate operation is performed. 4
Slide the power cable connector's cover to close it.
5
Connecting cables to the power cable connector is complete. The cover is closed.
All the cables are are fastened, and no cable core is exposed outside the power cable connector.
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HUAWEI TECHNOLOGIES CO., LTD. Huawei Industrial Base Bantian Longgang Shenzhen 518129 People’s Republic of China www.huawei.com
