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7.2 Replacing the Signal Cables of the BTS3702E

When the signal cables of the BTS3702E are faulty, you need to replace them. The BTS3702E
signal cables are monitoring signal cables.

Prerequisite

l

The types, models, and quantity of the faulty signal cables are confirmed, and the new
signal cables are ready.

l

The new cables are in good condition.

l

The required tools and materials are ready. The tools and materials are the ESD wrist strap
or ESD gloves, Phillips screwdriver, flat-head screwdriver, and ESD box or bag.

Context

Replacing the BTS3702E signal cables interrupts the signal transmission carried on the signal
cables.

Replacing the signal cables involves removing the faulty cables, installing the new cables,
clearing the alarms generated on the BTS3702E, and resuming the services. This operation takes
about ten minutes.

CAUTION

Take proper ESD prevention measures, for example, wear ESD wrist straps or gloves to prevent
boards, modules, and electronic components from being destroyed by static discharge from the
human body.

Procedure

Step 1

Lead the new signal cables to the peer device along the route of the faulty cables.

Step 2

Remove the faulty signal cables from the equipment.

Step 3

Connect two ends of new signal cables to the port connected to the faulty signal cables, and then
remove the fault signal cables.

Step 4

Attach an engineering label to each new cable. The content on each engineering label should be
the same as that on the replaced cable.

Step 5

Bind the new signal cables.

----End

Later Measures

Check the following items after replacing the faulty signal cables:

l

The cables are correctly and securely connected.

l

All related alarms are cleared in the alarm management system.

DBS3900 WiMAX
Site Maintenance Guide (Draft)

7 Replacing the BTS3702E Cables

Issue 01 (2009-11-30)

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

7-3

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Содержание DBS3900 WiMAX

Страница 1: ...DBS3900 WiMAX V300R002 Site Maintenance Guide Issue 01 Date 2009 11 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd ...

Страница 2: ... 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 recommenda...

Страница 3: ... 3 4 4 Replacing the BTS3702E Modules 4 1 5 Replacing the Optical Modules 5 1 6 Replacing the Power Modules 6 1 7 Replacing the BTS3702E Cables 7 1 7 1 Replacing the Power Cables of the BTS3702E 7 2 7 2 Replacing the Signal Cables of the BTS3702E 7 3 7 3 Replacing the Transmission Cables of the BTS3702E 7 4 7 3 1 Replacing the Ethernet Cables 7 4 7 3 2 Replacing the Optical Fibers 7 5 7 4 Replacin...

Страница 4: ......

Страница 5: ...702E 2 2 Table 2 2 Maintenance tasks of the BTS3702E 2 3 Table 2 3 Maintenance items for cables 2 3 Table 3 1 Meanings of the BTS3702E indicators 3 2 DBS3900 WiMAX Site Maintenance Guide Draft Tables Issue 01 2009 11 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd iii ...

Страница 6: ......

Страница 7: ... main equipment and the maintenance of the cables In addition the document provides guidance for the replacement of modules and cables Version The following table lists the product version related to this document Product Name Version BTS3702E V300R002 Intended Audience This document is intended for l System engineers l Site maintenance personnel Change History Version Change History 01 2009 11 25...

Страница 8: ...an interface for photoelectric conversion which enables the transmission between the BTS3702E and other equipment through the optical fiber It is used to connect the ASN GW or cascading connections between the BTSs Remove the optical fibers first when replacing the optical modules This disrupts the transmission signal 6 Replacing the Power Modules The power module is used to shift the power level ...

Страница 9: ...le log in as user root Italic Book titles are in italics Courier New Examples of information displayed on the screen are in Courier New Command Conventions The command conventions that may be found in this document are defined as follows Convention Description Boldface The keywords of a command line are in boldface Italic Command arguments are in italics Items keywords or arguments in brackets are...

Страница 10: ... example press Enter and press Tab Key 1 Key 2 Press the keys concurrently For example pressing Ctrl Alt A means the three keys should be pressed concurrently Key 1 Key 2 Press the keys in turn For example pressing Alt A means the two keys should be pressed in turn Mouse Operations The mouse operations that may be found in this document are defined as follows Action Description Click Select and re...

Страница 11: ...l Maintaining the BTS3702E main equipment l Maintaining the cables of the BTS3702E Arranging for Tools and Spare Parts Choose the corresponding tools and spare parts according to the site information and maintenance tasks of the BTS3702E The site maintenance tools are l The frequency test devices include a signal generator a spectrum analyzer and corresponding connectors and cables l The power tes...

Страница 12: ...Ethernet cables for commissioning Local maintenance terminal Spare parts NOTE Arrange for the tools and components according to the actual conditions of the specific replacement 1 Preparations for Site Maintenance DBS3900 WiMAX Site Maintenance Guide Draft 1 2 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2009 11 30 ...

Страница 13: ...peration guidance and reference standard of the power supply system and grounding system of the BTS3702E 2 2 Maintenance of BTS3702E Main Equipment The maintenance tasks of the BTS3702E equipment include checking the surface of the equipment cleanness of the equipment and indicators 2 3 Maintenance of Cables The maintenance tasks of cables include checking the signal cables the Ethernet cables the...

Страница 14: ...Monthly Measure the voltage of the power supply using a multimeter Operating voltage range 36 V DC to 57 V DC PGND cable Monthly Check whether the PGND cable and ground bar are connected securely The joints are secure and corrosion free Earth resistance Monthly Measure the earth resistance using an electric earth resistance tester and record the measurement The grounding resistance is lower than 1...

Страница 15: ...connectors and the sockets Table 2 3 lists the maintenance items for the cables Table 2 3 Maintenance items for cables Item Frequency Operation Standard Signal cables Annually Carefully check the connection of the signal cables l The signal cables are reliably connected l The signal cables are intact l The cables can be clearly identified through the labels Ethernet cables Annually Carefully check...

Страница 16: ...Annually Carefully check the connection of the RF jumper l The RF jumpers are intact and reliably connected l The waterproof of the RF jumper connections is perfect l The cables can be clearly identified through the labels Connectors and sockets Quarterly Check whether there is any dust or greasy dirt on the insulators of the connectors and sockets The insulators are clean 2 Tasks of Routine Hardw...

Страница 17: ...according to actual requirements 3 1 Powering On the BTS3702E The power supply input of the BTS3702E is 48 V DC After powering on the BTS3702E determine the working state of the BTS3702E according to the status of the indicators 3 2 Powering Off the BTS3702E You can power off the BTS3702E in a normal situation or in an emergency DBS3900 WiMAX Site Maintenance Guide Draft 3 Powering On and Powering...

Страница 18: ...n do not look directly at the beam from the optical module without taking the necessary eye protection measures Step 2 Wait for three to five minutes and then check the status of the indicators on modules of the BTS3702E Table 3 1 lists the meanings of the indicators Table 3 1 Meanings of the BTS3702E indicators Indicator Color State Description RUN Green On There is power input but the board is f...

Страница 19: ...t Red and on An alarm is generated indicating that an exception occurs when the optical module receives signals Off The SFP module is not in position or is powered off SFP1 Red and green Green and on The link connected to the Ethernet port is functional Green and blinking Data can be transmitted and received over the Ethernet port Red and on An alarm is generated indicating that exception occurs w...

Страница 20: ...ring off the BTS3702E according to the actual situation If Then The BTS3702E needs to be powered off when you swap the equipment or anticipate a territorial power outage Power off the BTS3702E in a normal situation by referring to Step 2 The BTS3702E needs to be powered off in an emergency such as fire smoke or water immersion Power off the BTS3702E in an emergency by referring to Step 3 Step 2 Se...

Страница 21: ...being destroyed by static discharge from the human body NOTE See the BTS3702E Quick Installation Guide to install new BTS3702E modules Procedure Step 1 Upload the BTS data configuration file by referring to Manually Backing Up Configuration Data Step 2 Power off the BTS3702E and turn off the power switch of the external power supply of the BTS3702E by referring to 3 2 Powering Off the BTS3702E Ste...

Страница 22: ...o Detecting BSs Automatically End Later Measures Check the following items after replacing the faulty BTS3702E modules l The BTS3702E modules are correctly installed l All the cables are correctly connected l The BTS3702E is operational after being powered on Contact the local Huawei office to handle the faulty BTS3702E modules 4 Replacing the BTS3702E Modules DBS3900 WiMAX Site Maintenance Guide ...

Страница 23: ...wappable l Replacing the BTS3702E optical module involves removing the optical fibers and faulty optical modules installing the new optical modules connecting the optical fibers to the optical modules and recovering the links The operation takes about five minutes CAUTION l Take proper ESD prevention measures for example wear ESD wrist straps or gloves to prevent boards modules and electronic comp...

Страница 24: ...2E Step 4 Connect the optical fiber connectors to the new optical modules Step 5 Check whether the transmission signal is recovered according to the indicators End Postrequisite Contact the local Huawei office to handle the faulty optical modules 5 Replacing the Optical Modules DBS3900 WiMAX Site Maintenance Guide Draft 5 2 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd I...

Страница 25: ... swappable l Replacing the BTS3702E power module involves removing the Ethernet cables and faulty power modules installing the new power modules connecting the Ethernet cables to the power modules and recovering the links The operation takes about five minutes CAUTION l Take proper ESD prevention measures for example wear ESD wrist straps or gloves to prevent boards modules and electronic componen...

Страница 26: ...ignal is recovered according to the indicators End Postrequisite Contact the local Huawei office to handle the faulty power module 6 Replacing the Power Modules DBS3900 WiMAX Site Maintenance Guide Draft 6 2 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2009 11 30 ...

Страница 27: ...e faulty you need to replace them 7 2 Replacing the Signal Cables of the BTS3702E When the signal cables of the BTS3702E are faulty you need to replace them The BTS3702E signal cables are monitoring signal cables 7 3 Replacing the Transmission Cables of the BTS3702E The transmission cables of the BTS3702E are optical fibers and Ethernet cables 7 4 Replacing the RF Jumpers of the BTS3702E The RF ju...

Страница 28: ...ds modules and electronic components from being destroyed by static discharge from the human body Procedure Step 1 Route the new power cables in the same way as the faulty power cables are routed Step 2 For details about how to power off the BTS3702E see 3 2 Powering Off the BTS3702E Step 3 Remove the faulty power cables from the equipment Step 4 Install the new power cables Step 5 Attach engineer...

Страница 29: ...ake proper ESD prevention measures for example wear ESD wrist straps or gloves to prevent boards modules and electronic components from being destroyed by static discharge from the human body Procedure Step 1 Lead the new signal cables to the peer device along the route of the faulty cables Step 2 Remove the faulty signal cables from the equipment Step 3 Connect two ends of new signal cables to th...

Страница 30: ...2C are faulty you need to replace them Prerequisite l The quantity and types of the faulty Ethernet cables are confirmed and new Ethernet cables are ready l The new cables are in good condition l The installation position of the Ethernet cable is recorded l The required tools and materials are ready The tools and materials are the ESD wrist strap or ESD gloves and ESD box or bag Context Replacing ...

Страница 31: ...When the optical fibers of the BTS3702E are faulty you need to replace them Prerequisite l The quantity and type of the faulty optical fibers are confirmed and new optical fibers are ready l The new fibers are in good condition l The connections of optical fibers are recorded l The required tools and materials are ready The tools and materials include the ESD wrist strap or gloves ESD box or bag a...

Страница 32: ...er Step 5 Arrange and bind the new optical fibers End Later Measures Check the following items after replacing the faulty optical fiber l The optical fiber of the correct type is properly connected l All related alarms are cleared in the alarm management system Contact the local Huawei office to handle the faulty optical fibers 7 4 Replacing the RF Jumpers of the BTS3702E The RF jumper of the BTS3...

Страница 33: ...apped in the following sequence from top down from bottom up and then from top down For every two adjacent tape layers the tape on the upper layer overlaps about half the width of the tape on the lower layer Step 8 Wrap the waterproof tape with three layers of insulating tape For details about how to wrap the insulating tape see Step 7 Step 9 Connect the RF jumpers to the antenna system Step 10 Wr...

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