Bbu3900 Gsm User Guide-(v300r008_04)

BBU3900 GSM

V300R008

User Guide

Issue 04

Date 2008-09-05

Part Number

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For anyassistance, please contact our local office or company headquarters.

Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Copyright © Huawei Technologies Co., Ltd. 2008. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions

and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but the statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd

http://www.huawei.com

mailto:[email protected]

Contents

About This Document.....................................................................................................................1

1 Safety Information.....................................................................................................................1-11.1 Safety Precautions...........................................................................................................................................1-11.2 Electricity Safety.............................................................................................................................................1-31.3 Inflammable Environment...............................................................................................................................1-51.4 Battery.............................................................................................................................................................1-51.5 Radiation.........................................................................................................................................................1-71.6 Working at Heights.........................................................................................................................................1-91.7 Mechanical Safety.........................................................................................................................................1-111.8 Others............................................................................................................................................................1-12

2 BBU3900 Hardware....................................................................................................................2-12.1 BBU3900 Equipment......................................................................................................................................2-2

2.1.1 Appearance of the BBU3900.................................................................................................................2-22.1.2 Boards and Module of the BBU3900.....................................................................................................2-2

2.2 BBU3900 Cables...........................................................................................................................................2-142.2.1 BBU3900 Cable List............................................................................................................................2-152.2.2 PGND Cable.........................................................................................................................................2-162.2.3 Power Cable.........................................................................................................................................2-162.2.4 E1 Cable...............................................................................................................................................2-172.2.5 E1 Surge Protection Transfer Cable.....................................................................................................2-192.2.6 Monitoring Signal Cable Between the APMI and the BBU................................................................2-212.2.7 CPRI Optical Cable..............................................................................................................................2-212.2.8 Alarm Cable.........................................................................................................................................2-22

2.3 BBU3900 Auxiliary Equipment....................................................................................................................2-232.3.1 APM30.................................................................................................................................................2-232.3.2 DCDU-03B...........................................................................................................................................2-24

3 Maintaining BBU3900 Hardware............................................................................................3-13.1 Maintenance Items of the BBU.......................................................................................................................3-23.2 Powering On and Powering Off the BBU.......................................................................................................3-2

3.2.1 Powering On the BBU............................................................................................................................3-23.2.2 Powering Off the BBU...........................................................................................................................3-3

3.3 Replacing the BBU Parts.................................................................................................................................3-4

BBU3900 GSMUser Guide Contents

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3.3.1 Replacing the UBFU..............................................................................................................................3-53.3.2 Replacing a UPEU.................................................................................................................................3-73.3.3 Replacing the UEIU.............................................................................................................................3-103.3.4 Replacing the GTMU...........................................................................................................................3-113.3.5 Replacing the UELP.............................................................................................................................3-153.3.6 Replacing the Optical Module..............................................................................................................3-16

ContentsBBU3900 GSM

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Figures

Figure 1-1 Wearing an ESD wrist strap...............................................................................................................1-5Figure 1-2 Lifting a weight................................................................................................................................1-10Figure 1-3 Slant angle........................................................................................................................................1-11Figure 1-4 One meter higher than the eave........................................................................................................1-11Figure 2-1 BBU3900............................................................................................................................................2-2Figure 2-2 Typical configuration of the BBU3900..............................................................................................2-4Figure 2-3 Panel of the UEIU...............................................................................................................................2-5Figure 2-4 Panel of the GTMU............................................................................................................................2-6Figure 2-5 Panel of the UELP ...........................................................................................................................2-10Figure 2-6 DIP switch on the UELP .................................................................................................................2-11Figure 2-7 Panel of the UBFA...........................................................................................................................2-12Figure 2-8 Panel of the UPEA............................................................................................................................2-13Figure 2-9 Panel of the UPEB............................................................................................................................2-13Figure 2-10 PGND cable....................................................................................................................................2-16Figure 2-11 Power cable.....................................................................................................................................2-17Figure 2-12 E1 cable..........................................................................................................................................2-18Figure 2-13 E1 surge protection transfer cable..................................................................................................2-20Figure 2-14 Monitoring signal cable between the APMI and the BBU.............................................................2-21Figure 2-15 CPRI optical cable..........................................................................................................................2-22Figure 2-16 Alarm cable.....................................................................................................................................2-22Figure 2-17 DCDU-03B.....................................................................................................................................2-24Figure 2-18 Ports on the DCDU-03B panel.......................................................................................................2-25Figure 3-1 Loosening the screws..........................................................................................................................3-5Figure 3-2 Checking whether the UBFU runs normally......................................................................................3-6Figure 3-3 Querying UBFU alarms......................................................................................................................3-7Figure 3-4 Loosening the screws..........................................................................................................................3-8Figure 3-5 Checking whether the UPEU runs properly.......................................................................................3-9Figure 3-6 Querying the alarm information of the UPEU..................................................................................3-10Figure 3-7 Loosening the screws........................................................................................................................3-11Figure 3-8 Loosening the screws........................................................................................................................3-12Figure 3-9 Checking whether the GTMU runs properly....................................................................................3-13Figure 3-10 Querying the software version of the GTMU.................................................................................3-14Figure 3-11 Querying GTMU alarms.................................................................................................................3-15

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Figure 3-12 Loosening the screws......................................................................................................................3-16Figure 3-13 Checking whether the CPRI signal transmission is resumed.........................................................3-18

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Tables

Table 2-1 Board configuration principles of the BBU3900.................................................................................2-3Table 2-2 Ports on the UEIU................................................................................................................................2-5Table 2-3 LEDs on the GTMU.............................................................................................................................2-6Table 2-4 Ports on the GTMU panel....................................................................................................................2-7Table 2-5 Settings of S1.......................................................................................................................................2-8Table 2-6 Settings of S2.......................................................................................................................................2-9Table 2-7 Settings of S4.......................................................................................................................................2-9Table 2-8 Settings of S5.......................................................................................................................................2-9Table 2-9 Ports on the panel of the UELP..........................................................................................................2-10Table 2-10 DIP switch on the UELP .................................................................................................................2-11Table 2-11 LED on the UBFA...........................................................................................................................2-12Table 2-12 LED on the UPEU............................................................................................................................2-14Table 2-13 Ports on the UPEU...........................................................................................................................2-14Table 2-14 Cable list...........................................................................................................................................2-15Table 2-15 Pin assignment for wires of the -48 V power cable.........................................................................2-17Table 2-16 Pin assignment for wires of the +24 V power cable........................................................................2-17Table 2-17 Pin assignment for the wires of the 75-ohm E1 coaxial cable.........................................................2-18Table 2-18 Pin assignment for the wires of the 120-ohm E1 twisted pair cable................................................2-19Table 2-19 Pin assignment for the wires of the E1 surge protection transfer cable...........................................2-20Table 2-20 Pin assignment for the wires of the monitoring signal cable between the APMI and the BBU......2-21Table 2-21 Pin assignment for the fiber tails of the CPRI optical cable............................................................2-22Table 2-22 Pin assignment for the wires of the alarm cable...............................................................................2-23Table 2-23 Parameters for the ports on the DCDU-03B panel...........................................................................2-25Table 3-1 Maintenance items associated with the BBU.......................................................................................3-2

BBU3900 GSMUser Guide Tables


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About This Document

PurposeThis document provides an overview of the BBU3900 GSM hardware for the planning anddeployment of the BBU3900 GSM. It describes the BBU3900 GSM boards and modules, portsand related functions, categories of cables, and specifications and installation positions of theconnectors. This document also presents various installation modes and maintenanceinformation of the BBU3900 GSM.

Product VersionThe following table lists the product version related to this document.

Product Name Product Version

BBU3900 GSM(referred to asBBU3900 in this manual)

V300R008

Intended AudienceThis document is intended for:

l BBU3900 installers

l Maintenance engineers

l Technical support engineers

Change HistoryFor changes in the document, refer to Changes in BBU3900 GSM User Guide.

Organization

1 Safety Information

2 BBU3900 Hardware

This describes the boards, modules, cables, and auxiliary equipment of the BBU3900 to providereference for planning the deployment of the DBS3900.

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3 Maintaining BBU3900 Hardware

After the site is put into use, routine maintenance on the BBU is required to ensure that it runsproperly in the long term.

Conventions

1. Symbol Conventions

The following symbols may be found in this document. They are defined as follows

Symbol Description

DANGERIndicates a hazard with a high level of risk that, if not avoided,will result in death or serious injury.

WARNINGIndicates a hazard with a medium or low level of risk which, ifnot avoided, could result in minor or moderate injury.

CAUTIONIndicates a potentially hazardous situation that, if not avoided,could cause equipment damage, data loss, and performancedegradation, or unexpected results.

TIP Indicates a tip that may help you solve a problem or save yourtime.

NOTE Provides additional information to emphasize or supplementimportant points of the main text.

2. General Conventions

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

Boldface Names of files,directories,folders,and users are in boldface. Forexample,log in as user root .

Italic Book titles are in italics.

Courier New Terminal display is in Courier New.

3. Command Conventions


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italic.

[ ] Items (keywords or arguments) in square brackets [ ] are optional.

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{x | y | ...} Alternative items are grouped in braces and separated by verticalbars.One is selected.

[ x | y | ... ] Optional alternative items are grouped in square brackets andseparated by vertical bars.One or none is selected.

{ x | y | ... } * Alternative items are grouped in braces and separated by verticalbars.A minimum of one or a maximum of all can be selected.

[ x | y | ... ] * Alternative items are grouped in braces and separated by verticalbars.A minimum of zero or a maximum of all can be selected.

4. GUI Conventions


Boldface Buttons,menus,parameters,tabs,window,and dialog titles are inboldface. For example,click OK.

> Multi-level menus are in boldface and separated by the ">" signs.For example,choose File > Create > Folder .

5. Keyboard Operation


Key Press the key.For example,press Enter and press Tab.

Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+Ameans the three keys should be pressed concurrently.

Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the twokeys should be pressed in turn.

6. Mouse Operation

Action Description

Click Select and release the primary mouse button without moving thepointer.

Double-click Press the primary mouse button twice continuously and quicklywithout moving the pointer.

Drag Press and hold the primary mouse button and move the pointerto a certain position.

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1 Safety Information

1.1 Safety PrecautionsThis section describes certain safety precautions and helps to choose the measurement deviceand testing device. Read and follow these safety precautions before installing, operating, andmaintaining Huawei devices.

Following All Safety Precautions

Before any operation, read the instructions and precautions in this document carefully tominimize the possibility of accidents.

The Danger, Caution, and Note items in the package of documents do not cover all the safetyprecautions that must be followed. They only provide the generic safety precautions foroperations.

Symbols

DANGERThis symbol indicates that casualty or serious accident may occur if you ignore the safetyinstruction.

CAUTIONThis symbol indicates that serious or major injury may occur if you ignore the safety instruction.

NOTE

This symbol indicates that the operation may be easier if you pay attention to the safety instruction.

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Complying with the Local Safety Regulations

When operating the device, comply with the local safety regulations. The safety precautionsprovided in the documents are supplementary. You must comply with the local safetyregulations.

General Installation Requirements

The personnel in charge of installation and maintenance must be trained and master the correctoperating methods and safety precautions before beginning work.

The rules for installing and maintaining the device are as follows:

l Only the trained and qualified personnel can install, operate and maintain the device.

l Only the qualified specialists are allowed to remove the safety facilities, and repair thedevice.

l Any replacement of the device or part of the device (including the software) or any changemade to the device must be performed by qualified or authorized personnel of Huawei.

l Any fault or error that might cause safety problems must be reported immediately to thepersonnel in charge.

Grounding Requirements

The following requirements are applicable to the device to be grounded:

l Ground the device before installation and remove the ground cable after uninstallation.

l Do not operate the device in the absence of a ground conductor. Do not damage the groundconductor.

l The unit (or system) must be permanently connected to the protection ground beforeoperation. Check the electrical connection of the device before operation and ensure thatthe device is reliably grounded.

Safety of Personnel

Ensure the following:

l When lightning strikes, do not operate the device and cables.

l When lightning strikes, unplug the AC power connector. Do not use the fixed terminal ortouch the terminal or antenna connector.

NOTE

The previous two requirements are suitable for the wireless fixed terminal.

l To prevent electric shock, do not connect safety extra-low voltage (SELV) circuits totelecommunication network voltage (TNV) circuits.

l To prevent laser radiation from injuring your eyes, never look into the optical fiber outletwith unaided eyes.

l To prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, glovesand wrist strap, and remove conductors such as jewelry and watch before operation.

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Device Safetyl Before operation, the device must be secured on the floor or other fixed objects, such as

the walls and the mounting racks.l Do not block ventilation openings while the system is running.

l When installing the panel, tighten the screw with the tool.

1.2 Electricity Safety

High Voltage

DANGERl The high voltage power supply provides power for running the system. Direct contact with

the high voltage power supply or contact through damp objects may result in fatal danger.l Non-standard and improper high voltage operations may result in fire and electric shock.

l The personnel who install the AC facility must be qualified to perform operations on highvoltage and AC power supply facilities.

l When installing the AC power supply facility, follow the local safety regulations.

l When operating the AC power supply facility, follow the local safety regulations.

l When operating the high voltage and AC power supply facilities, use the specific toolsinstead of common tools.

l When the operation is performed in a damp environment, ensure that water is kept off thedevice. If the cabinet is damp or wet, shut down the power supply immediately.

ThunderstormThe following requirements are suitable only for the wireless base station or the device with anantenna or GPS antenna.

DANGERIn a thunderstorm, do not perform operations on high voltage and AC power supply facilities oron a steel tower and mast.

High Electrical Leakage

CAUTIONGround the device before powering on the device. Otherwise, the personnel and device are indanger.



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If the "high electrical leakage" flag is stuck to the power terminal of the device, you must groundthe device before powering it on.

Power Cable

CAUTIONDo not install and remove the power cable with a live line. Transient contact between the coreof the power cable and the conductor may generate electric arc or spark, which may cause fireor eye injury.

l Before installing or removing the power cable, turn off the power switch.

l Before connecting the power cable, ensure that the power cable and label comply with therequirements of the actual installation.

Fuse

CAUTIONTo ensure that the system runs safely, when a fuse blows, replace it with a fuse of the same typeand specifications.

Electrostatic Discharge

CAUTIONThe static electricity generated by the human body may damage the electrostatic sensitivecomponents on the circuit board, such as the large-scale integrated circuit (LIC).

In the following situations, the human body generates a static electromagnetic field:

l Movement of body parts

l Clothes friction

l Friction between shoes and the ground

l Holding plastic in hand

The static electromagnetic field will remain within the human body for a long time.

Before contacting the device, plug boards, circuit boards, and application specific integratedcircuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components frombeing damaged by the static electricity in the human body.

Figure 1-1shows how to wear an ESD wrist strap.


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Figure 1-1 Wearing an ESD wrist strap

1.3 Inflammable Environment

DANGERDo not place the device in the environment that has inflammable and explosive air or fog. Donot perform any operation in this environment.

Any operation of the electrical device in the inflammable environment causes danger.

1.4 Battery

Storage Battery

DANGERBefore handling the storage battery, read the safety precautions for the handling and connectionof the storage battery.

Incorrect operation of storage batteries may cause danger. During operation, ensure thefollowing:

l Prevent any short-circuit.



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l Prevent the electrolyte from overflowing and leakage.

Electrolyte overflow may damage the device. It will corrode the metal parts and the circuitboards, and ultimately damage the device and cause short-circuit of the circuit boards.

General OperationsBefore installing and maintaining the storage battery, ensure the following:

l Use special insulation tools.

l Use eye protection devices and operate with care.

l Wear rubber gloves and an apron in case of an electrolyte overflow.

l Always keep the battery upright when moving. Do not place the battery upside down or tiltit.

Short-Circuit

DANGERShort-circuit of the battery may cause injury. Although the voltage of a battery is low, hightransient current generated by short-circuit will release a surge of power.

Keep metal objects away from the battery to prevent short circuit. If they have to be used,disconnect the battery in use before performing any other operation.

Harmful Gas

CAUTIONl Do not use unsealed lead-acid storage batteries, because the gas emitted from it may result

in fire or device corrosion.l Lay the storage battery horizontally and fix it properly.

The lead-acid storage battery in use will emit flammable gas. Therefore, store it in a place withgood ventilation and take precautions against fire.

High Temperature

CAUTIONHigh temperature may result in distortion, damage, and electrolyte overflow of the battery.

When the temperature of the battery exceeds 60oC, check whether there is acid overflow. If acidoverflow occurs, handle the acid immediately.


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Acid

CAUTIONIf the acid overflows, it should be absorbed and neutralized immediately.

When handling a leaky battery, protect against the possible damage caused by the acid. Use thefollowing materials to absorb and neutralize acid spills:

l Sodium bicarbonate (baking soda): NaHCO3

l Sodium carbonate (soda): Na2CO3

Antacids must be used according to the instructions provided by the battery manufacturer.

Lithium Battery

CAUTIONThere is danger of explosion if the battery is incorrectly replaced.

l Replace the lithium battery with the same or equivalent type recommended by themanufacturer.

l Dispose of the used battery according to the instructions provided by the manufacturer.

l Do not dispose of the lithium battery in fire.

1.5 Radiation

Electromagnetic Field Exposure

CAUTIONHigh power radio-frequency signals are harmful to human body.

Before installing or maintaining an antenna on a steel tower or mast with a large number oftransmitter antennas, the operator should coordinate with all parties to ensure that the transmitterantennas are shut down.

The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for theinstallation and operation of BTSs are given in the following section. Operators are also requiredto comply with the related local regulations on erecting BTSs.

l The antenna should be located in an area that is inaccessible to the public where the RFradiation exceeds the stipulated value.



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l If the areas where RF radiation exceeds the stipulated value are accessible to workers,ensure that workers know where these areas are. They can shut down the transmitters beforeentering these areas. Such areas may not exist; but if they exist, the areas must be within arange of less than 10 m around the antennas.

l Each forbidden zone should be indicated by a physical barrier and striking sign to warn thepublic or workers.

Laser

CAUTIONWhen handling optical fibers, do not stand close to, or look into the optical fiber outlet withunaided eyes.

Laser transceivers or transmitters are used in the optical transmission system and associated testtools. Because the laser that is transmitted through the optical fiber produces a small beam oflight, it has a very high power density and is invisible to human eyes. If a beam of light entersthe eye, the retina may be damaged.

Normally, staring into the end of an unterminated optical fiber or broken optical fiber with theunaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyesmay, however, be damaged if an optical tool such as a microscope, magnifying glass or eyeloupe is used to stare into the bare optical fiber end.

Read the following guidelines to prevent laser radiation:

l Only the trained and authorized personnel can perform the operation.

l Wear a pair of eye-protective glasses when you are handling lasers or optical fibers.

l Ensure that the optical source is switched off before disconnecting optical fiber connectors.

l Never look into the end of an exposed optical fiber or an open connector if you cannotensure that the optical source is switched off.

l To ensure that the optical source is switched off, use an optical power meter.

l Before opening the front door of an optical transmission system, ensure that you are notexposed to laser radiation.

l Never use an optical tool such as a microscope, a magnifying glass, or an eye loupe to lookinto the optical fiber connector or end.

Read the following instructions before handling optical fibers:

l Only the trained personnel can cut and splice optical fibers.

l Before cutting or splicing an optical fiber, ensure that the optical fiber is disconnected fromthe optical source. After disconnecting the optical fiber, use protecting caps to protect allthe optical connectors.


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1.6 Working at Heights

CAUTIONWhen working at heights, ensure that the objects do not fall.

When working at heights, ensure that the following requirements must be met:

l The personnel who work at heights must be trained.

l The operating machines and tools should be carried and handled safely to prevent themfrom falling.

l Safety measures, such as wearing a helmet and a safety belt, should be taken.

l In cold regions, warm clothes should be worn before working at heights.

l Ensure that the lifting appliances are well prepared for working at heights.

Lifting Weights

CAUTIONDo not access the areas under the arm of the crane and the goods in suspension when liftingweights.

l Ensure that the operators have been trained and qualified.

l Check the weight lifting tools and ensure that they are intact.

l Lift the weight only when the weight lifting tools are firmly mounted onto the weight-bearing object or the wall.

l Use a concise instruction to prevent incorrect operation.

l The angle between the two cables should be less than or equal to 90o in the lifting of weights(See Figure 1-2).



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Figure 1-2 Lifting a weight

Safety Guide on Ladder UseChecking the Ladder

l Check the ladder before using it. Check the maximum weight that the ladder can support.

l Never overload the ladder.

Placing the Ladder

l The slant angle is preferred to be 75o. The slant can be measured with the angle square orwith arms, as shown in Figure 1-3. When using a ladder, place the wider end of the ladderon the ground and take protective measures on the base of the ladder against slippage. Placethe ladder on a stable ground.

When climbing the ladder, ensure the following:

l The gravity of the body does not shift from the edge of the ladder.

l Keep balance on the ladder before performing any operation.

l Do not climb higher than the fourth highest step of the ladder.

If you tend to climb to the roof, the length of the ladder should be at least one meter higher thanthe eave, as shown in Figure 1-4.


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Figure 1-3 Slant angle

Figure 1-4 One meter higher than the eave

1.7 Mechanical Safety

Drilling

CAUTIONDo not drill on the cabinet without permission. Inappropriate drilling on the cabinet may damagethe electromagnetic shielding and internal cables. Metal shavings from the drilling may resultin a short-circuit of the circuit board if they get into the cabinet.

l Before drilling a hole on the cabinet, remove the cables from the cabinet.



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l During the drilling, wear blinkers to protect your eyes.

l During the drilling, wear the protective gloves.

l Prevent the metal shavings from getting into the cabinet. After drilling, clean the metalshavings in time.

Handling Sharp Objects

CAUTIONWhen carrying the device by hand, wear the protective gloves to prevent injury by sharp objects.

Handling Fansl When replacing a component, place the component, screw, and tool at a safe place to prevent

them from falling into the running fan.l When replacing the ambient equipment around the fan, do not place the finger or board

into the running fan until the fan is switched off and stops running.

Moving Heavy ObjectsWear the protective gloves when moving heavy objects.

CAUTIONl Be careful when moving heavy objects.

l When moving the chassis outwards, be aware about the unfixed or heavy objects on thechassis to prevent injury.

l Two persons should be available to move a chassis; one person must not move a heavychassis. When moving a chassis, keep your back straight and move stably to prevent asprain.

l When moving or lifting a chassis, hold the handle or bottom of the chassis. Do not hold thehandle of the installed modules in the chassis, such as the power module, fan module, orboard.

1.8 Others

Inserting and Removing a Board

CAUTIONWhen inserting a board, wear the ESD wrist strap or gloves. Insert the board gently to preventany bent pins on the backplane.


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l Insert the board along the guide rail.

l Avoid contact of one board with another to prevent short-circuit or damage.

l Do not remove the active board before powering off.

l When holding a board in hand, do not touch the board circuit, components, connectors, orconnection slots.

Bundling Signal Cables

CAUTIONBundle the signal cables separately from the strong current cables or high voltage cables.

Cabling RequirementsAt a very low temperature, movement of the cable may damage the plastic skin of the cable. Toensure the construction safety, comply with the following requirements:

l When installing cables, ensure that the environment temperature is above 0oC.

l If cables are stored in the place below 0oC, move the cables into a place at a roomtemperature and store the cables for more than 24 hours before installation.

l Move the cables with care, especially at a low temperature. Do not drop the cables directlyfrom the vehicle.



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2 BBU3900 Hardware

About This Chapter

This describes the boards, modules, cables, and auxiliary equipment of the BBU3900 to providereference for planning the deployment of the DBS3900.

2.1 BBU3900 EquipmentThe BBU3900 is used for baseband processing and enables interaction between the BTS andthe BSC.

2.2 BBU3900 CablesThe BBU3900 cables are classified into the PGND cable, power cable, E1 cable, E1 surgeprotection transfer cable, monitoring signal cable between the APMI and the BBU, CPRI opticalcable, and BBU alarm cable.

2.3 BBU3900 Auxiliary EquipmentThe BBU3900 auxiliary equipment consists of the APM30 and the DCDU-03B. You can chooseone or more types of auxiliary equipment when installing the BBU3900.

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2.1 BBU3900 EquipmentThe BBU3900 is used for baseband processing and enables interaction between the BTS andthe BSC.

The primary functions of the BBU3900 are as follows:

l Providing physical ports for the communication between the BTS and the BSC

l Providing CPRI ports for the communication with the RF modules

l Providing USB ports for downloading the BTS software

l Providing the OM channel for connection with the LMT or the M2000

l Processing uplink and downlink data

l Providing centralized management on the entire DBS system, such as OM and signalingprocessing

l Providing the reference clock for the system

2.1.1 Appearance of the BBU3900The BBU3900 is a small box with all the external ports on the front panel.

2.1.2 Boards and Module of the BBU3900The BBU3900 boards consist of the UEIU, GTMU, UELP and UPEU; and its module is theUBFA.

2.1.1 Appearance of the BBU3900The BBU3900 is a small box with all the external ports on the front panel.

Figure 2-1 shows the BBU3900.

Figure 2-1 BBU3900

2.1.2 Boards and Module of the BBU3900The BBU3900 boards consist of the UEIU, GTMU, UELP and UPEU; and its module is theUBFA.

2.1.2.1 Board Configuration of the BBU3900This describes the board configuration of the BBU3900.

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2.1.2.2 UEIU BoardThis describes the Universal Environment Interface Unit (UEIU) board of the BBU3900. TheUEIU transmits monitoring signals and alarm signals from external devices to the main controlboard.

2.1.2.3 GTMUThe GSM Transmission, Timing, and Management Unit for BBU (GTMU) controls and managesthe entire BTS. It provides interfaces related to the reference clock, power supply, OM, andexternal alarm collection.

2.1.2.4 UELP BoardThe Universal E1/T1 Lightning Protection (UELP) is a universal E1/T1 surge protection unit.The UELP is optionally installed in the SLPU or BBU. Each UELP provides surge protectionfor four E1s/T1s.

2.1.2.5 UBFA ModuleThis describes the Universal BBU Fan Unit Type A (UBFA) module of the BBU3900. TheUBFA controls the fan speed and detects the temperature of the fan board.

2.1.2.6 UPEU BoardThis describes the Universal Power and Environment Interface Unit (UPEU) board. It is amandatory board of the BBU3900 that converts -48 V or +24 V DC to +12 V DC.

Board Configuration of the BBU3900This describes the board configuration of the BBU3900.

Table 2-1 describes the board configuration principles of the BBU3900.

Table 2-1 Board configuration principles of the BBU3900

Board/Module

Optional/Mandatory

MaximumConfiguration

Slot ConfigurationLimitations

GTMU Mandatory 1 Slot 5 and slot 6 Only configured at slot5 and slot 6

UBFA Mandatory 1 FAN Only configured at thefan slot

UPEU Mandatory 2 PWR1 andPWR2

Preferentiallyconfigured at PWR2 inthe case of a singleUPEU



2-3

Board/Module

Optional/Mandatory

MaximumConfiguration

Slot ConfigurationLimitations

UELP Optional 2 Slot 0 and slot 4 In the case of less thanor equal to four E1signals, one UELP isrequired and installed inslot 4. In the case ofmore than four and lessthan or equal to eight E1signals, two UELPs arerequired and installed inslot 0 and slot 4. In thecase of more than eightE1 signals, the SLPU isrequired and the UELPsare installed in theSLPU.

UEIU Optional 1 PWR1 andPWR2

Preferentiallyconfigured at PWR1

Figure 2-2 shows the typical configuration of the BBU3900.

Figure 2-2 Typical configuration of the BBU3900

GTMU UPEUUBFA

GTMU

ETH FE0 FE1

CPRI0 CPRI2 CPRI4

CPRI3CPRI1 CPRI5TX RX

TX0 RX0 TX1 RX1 TX2 RX2 TX3 RX3TX4 RX4 TX5 RX5LIU0 LIU2

LIU1 LIU3

USB TST E1/T1 RST

RUNALMACT

1 2 3 4 5

UEIU BoardThis describes the Universal Environment Interface Unit (UEIU) board of the BBU3900. TheUEIU transmits monitoring signals and alarm signals from external devices to the main controlboard.

PanelFigure 2-3 shows the panel of the UEIU.


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Figure 2-3 Panel of the UEIU

FunctionThe UEIU has the following functions:l Providing two ports with each transmitting one RS485 signal

l Providing two ports with each transmitting four dry contact signals

PortTable 2-2 describes the ports on the UEIU panel.

Table 2-2 Ports on the UEIU

Label Connector Type Description

MON0 RJ45 One RS485 signal

MON1 RJ45 One RS485 signal

EXT-ALM0 RJ45 Four dry contact signals

EXT-ALM1 RJ45 Four dry contact signals

GTMUThe GSM Transmission, Timing, and Management Unit for BBU (GTMU) controls and managesthe entire BTS. It provides interfaces related to the reference clock, power supply, OM, andexternal alarm collection.

PanelFigure 2-4 shows the GTMU panel.



2-5

Figure 2-4 Panel of the GTMU

GTMU

ETH FE0 FE1

CPRI0 CPRI2 CPRI4


TX0 RX0 TX1 RX1 TX2 RX2 TX3 RX3 TX4 RX4 TX5 RX5 LIU0 LIU2

LIU1 LIU3

USB TST E1/T1 RST

RUNALMACT

1 2 3 4 5

Functions

The GTMU performs the following functions:

l Controlling, maintaining, and operating the BTS

l Providing fault management, configuration management, performance management, andsecurity management

l Monitoring the fan module and the power supply module

l Distributing and managing BTS clock signals

l Providing clock input for testing

l Providing the Ethernet port for local maintenance

l Providing four E1 inputs

l Providing CPRI ports for the communication with the RF modules

LED

Table 2-3 describes the LEDs on the GTMU panel.

Table 2-3 LEDs on the GTMU

LED Color State Description

RUN Green ON The board is faulty.

OFF No power supply is available orthe board is faulty.

1s ON and 1s OFF The board is operational.

2s ON and 2s OFF The OML link is abnormal.

0.125s ON and0.125s OFF

The board is loading software.

ALM Red ON A fault occurs in the runningboard.

OFF No alarm is generated.

ACT Green ON The board is operational.


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LED Color State Description

OFF Board Fault

LIU0-LIU3 Green ON Local E1/T1 alarms arereported.

0.125s ON and0.125s OFF

A remote E1/T1 alarm isgenerated.

OFF This link is not used or the alarmis cleared.

CPRI0-CPRI5

Green ON The CPRI link is normal.

Red ON The reception of the opticalmodule is abnormal and analarm is generated.

PortTable 2-4 describes the ports on the GTMU panel.

Table 2-4 Ports on the GTMU panel


CPRI0-CPRI5 SFP connector Ports for the communication between the BBUand the RF module; support input and output ofthe optical and electrical signal .

ETH RJ45 connector Performs local maintenance and commissioning

FE0 RJ45 connector A reserved port that performs the followingfunction:Connects the BBU to a routing device in theequipment room through the Ethernet cable totransmit network information.

FE1 DLC connector A reserved port that performs the followingfunction:Connects the BBU to a routing device in theequipment room through the optical cable totransmit network information.

USB USB connector A reserved port that performs the followingfunction:Used in software upgrade from a USB disk

TST USB connector Tests the output clock signals using a tester



2-7


E1/T1 DB26 femaleconnector

Provides the input and output of the four E1/T1signals between the GTMU and the UELP orbetween the GTMU and the BSC.

The RESET button on the GTMU is used to reset the GTMU.

DIP Switch

The GTMU has five DIP switches. Each DIP switch has four DIP bits. The DIP switches S1 andS2 should be set in pairs.

l If the 75-ohm E1 cable is used, the S1 and S2 should be set as follows: The E1 impedanceis set to 75 ohms and the E1/T1 is grounded.

l If the 120-ohm E1 cable is used, the S1 and S2 should be set as follows: The E1 impedanceis set to 120 ohms and the E1/T1 is not grounded.

l If the 100-ohm T1 cable is used, the S1 and S2 should be set as follows: The T1 impedanceis set to 100 ohms and the E1/T1 is not grounded.

NOTE

All the E1/T1 cables are used in balanced mode.

The functions of the DIP switches are as follows:

l S1 is used to set E1 impedance. Table 2-5 describes the settings of the DIP switch.

l S2 is used to set the grounding of E1/T1 transmission. Table 2-6 describes the settings ofthe DIP switch.

l S3 is reserved.

l S4 is used for the selection of E1 bypass. Table 2-7 describes the settings of the DIP switch.

l S5 is used to set the timeslots when the E1 link is bypassed. Table 2-8 describes the settingsof the DIP switch.

Table 2-5 Settings of S1

DIP Switch DIP Status Description

1 2

S1 ON ON The E1 impedance is set to 75 ohms.

OFF ON The E1 impedance is set to 120 ohms.

ON OFF The T1 impedance is set to 100 ohms.

NOTE

The DIP bits 3 and 4 of S1 should retain the default settings. The default settings are OFF. If they are ON,you should change them to OFF.


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DIPSwitch

DIP Status Description

1 2 3 4

S2 ON ON ON ON E1/T1 grounded(unbalanced mode)

OFF OFF OFF OFF E1/T1 not grounded(balanced mode)

Other settings of the DIP bits Disabled

NOTE

All the DIP bits of S2 are set to OFF (balanced mode) by default in 75-ohm E1 mode. When four E1 linksare faulty, all the DIP bits of S2 should be set to ON (unbalanced mode) so that the faults are rectified.

All the DIP bits of S2 should retain OFF in 120-ohm E1 mode or 100-ohm T1 mode.


DIPSwitch


1 2 3 4

S4 ON ON ON ON The E1 link can bebypassed.

OFF OFF OFF OFF The E1 link cannot bebypassed.

Other settings of the DIP bits Disabled


DIPSwitch


1 2 3 4

S5 ON ON ON ON The E1 link cannot bebypassed.

OFF ON ON OFF The E1 link of theLevel 1 cascaded BTScan be bypassed.

ON OFF ON OFF The E1 link of theLevel 2 cascaded BTScan be bypassed.



2-9

DIPSwitch


1 2 3 4

OFF OFF ON OFF The E1 link of theLevel 3 cascaded BTScan be bypassed.

ON ON OFF OFF The E1 link of theLevel 4 cascaded BTScan be bypassed.

OFF ON OFF OFF The E1 link of theLevel 5 cascaded BTScan be bypassed.

UELP Board

The Universal E1/T1 Lightning Protection (UELP) is a universal E1/T1 surge protection unit.The UELP is optionally installed in the SLPU or BBU. Each UELP provides surge protectionfor four E1s/T1s.

Panel

Figure 2-5 shows the panel of the UELP.

Figure 2-5 Panel of the UELP

Port

Table 2-9 describes the ports on the panel of the UELP.

Table 2-9 Ports on the panel of the UELP


INSIDE DB25 E1 transfer transmission port

OUTSIDE DB26 E1 transmission port

DIP Switch

The UELP has one DIP switch, which is used to select whether the receive terminal is grounded.The DIP switch has four bits. Figure 2-6 shows the DIP switch on the UELP.


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Figure 2-6 DIP switch on the UELP

Table 2-10 describes the DIP switch on the UELP.

Table 2-10 DIP switch on the UELP

DIPSwitch


1 2 3 4

S1 ON ON ON ON Used for the 75-ohm unbalanced mode

OFF OFF OFF OFF Used for other modes except the 75-ohmunbalanced mode

UBFA ModuleThis describes the Universal BBU Fan Unit Type A (UBFA) module of the BBU3900. TheUBFA controls the fan speed and detects the temperature of the fan board.

PanelFigure 2-7 shows the panel of the UBFA.



2-11

Figure 2-7 Panel of the UBFA

Function

The UBFA has the following functions:

l Controlling the fan speed

l Reporting the fan status to the main control board.

l Detecting the temperature of the air inlets

LED

The UBFA has only one LED, indicating the running status of the module. Table 2-11 describesthe LED and its status.

Table 2-11 LED on the UBFA

Label Color Status Description

STATE Green 0.125s ON, 0.125sOFF

The module is notregistered, and noalarm is reported.

1s ON, 1s OFF The module isrunning properly.

Red OFF No alarm is reported.


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Label Color Status Description

1s ON, 1s OFF The module isreporting alarms.

UPEU BoardThis describes the Universal Power and Environment Interface Unit (UPEU) board. It is amandatory board of the BBU3900 that converts -48 V or +24 V DC to +12 V DC.

PanelThe UPEU is classified into the Universal Power and Environment Interface Unit Type A(UPEA) and the Universal Power and Environment Interface Unit Type B (UPEB). The UPEAconverts -48 V DC to +12 V DC and the UPEB converts 24 V DC to 12 V DC. Figure 2-8 showsthe UPEA panel and Figure 2-9 shows the UPEB panel.

Figure 2-8 Panel of the UPEA

Figure 2-9 Panel of the UPEB

FunctionsThe UPEU has the following functions:l Converting -48 V or +24 V DC to +12 V DC that is applicable to the boards

l Providing two ports with each transmitting one RS485 signal and another two ports witheach transmitting four dry contact signals

l Providing reverse connection protection for power cable connectors.



2-13

LEDThe UPEU has only one LED, indicating the running status of the board. Table 2-12 describesthe LED and its status.

Table 2-12 LED on the UPEU

Label Color Status Meaning

RUN Green ON The UPEU isoperational.

OFF Power input isunavailable or theboard is faulty.

PortTable 2-13 describes the ports on the UPEU.

Table 2-13 Ports on the UPEU


PWR 3V3 +24 V/-48 V DC power input

EXT-ALM1 RJ45 Transmitting four dry contactalarms

EXT-ALM0 RJ45 Transmitting four dry contactalarms

MON1 RJ45 Transmitting one RS485environment monitoringsignal

MON0 RJ45 Transmitting one RS485environment monitoringsignal

2.2 BBU3900 CablesThe BBU3900 cables are classified into the PGND cable, power cable, E1 cable, E1 surgeprotection transfer cable, monitoring signal cable between the APMI and the BBU, CPRI opticalcable, and BBU alarm cable.

2.2.1 BBU3900 Cable ListThe BBU3900 cables consist of BBU power cable, BBU PGND cable, E1 cable, E1 surgeprotection transfer cable, monitoring signal cable between the APMI and the BBU, CPRI opticalcable, and BBU alarm cable.

2.2.2 PGND Cable


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This describes the PGND cable. The PGND cable ensures the grounding of the BBU.

2.2.3 Power CableThis describes the power cable. Either -48 V power cable or +24 V power cable can be used,depending on the power input.

2.2.4 E1 CableThis describes the E1 cable. It connects the BBU3900 to the RNC and transmits baseband signals.

2.2.5 E1 Surge Protection Transfer CableThis describes the E1 surge protection transfer cable. It connects the UELP to the main controlboard.

2.2.6 Monitoring Signal Cable Between the APMI and the BBUThis describes the monitoring signal cable between the APMI and the BBU. It transmits theenvironment monitoring signals of the power cabinet to the BBU.

2.2.7 CPRI Optical CableThis describes the CPRI optical cable. It connects the BBU to the RRU and transmits CPRIsignals between them.

2.2.8 Alarm CableThis describes the alarm cable. It transmits alarm signals from external devices to the BBU.

2.2.1 BBU3900 Cable ListThe BBU3900 cables consist of BBU power cable, BBU PGND cable, E1 cable, E1 surgeprotection transfer cable, monitoring signal cable between the APMI and the BBU, CPRI opticalcable, and BBU alarm cable.

Table 2-14 lists the BBU3900 cables.

Table 2-14 Cable list

Cable Type Factory Settings Installation Positions

BBU PGND cable Both ends of the cable shouldbe connected on site.

One end is connected to thegrounding bolt of the BBU.The other end is connected tothe wiring terminal of thePGND bar.

BBU power cable Both ends of the cable shouldbe connected on site.

One end is connected to thePWR port on the UPEU.The other end is connected tothe external power device (5A).

E1 cable Both ends of the cable shouldbe connected on site.

One end is connected to theOUTSIDE port on the UELPor the E1/T1 port on theGTMU.The other end is connected tothe corresponding auxiliaryequipment.



2-15

Cable Type Factory Settings Installation Positions

E1 surge protectiontransfer cable

Both ends of the cable shouldbe connected on site.

One end is connected to theINSIDE port on the UELP.The other end is connected tothe E1/T1 port on the GTMU.

Monitoring signal cablebetween the APMI and theBBU

Before delivery, the cable isrouted and one end isconnected to the APMI. Theother end needs to be installedon site.

One end is connected to theMON port on the UEIU or theUPEU.The other end is connected tothe corresponding externaldevice.

CPRI optical cable Both ends of the cable shouldbe connected on site.

One end is connected to theCPRI port on the BBU.The other end is connected tothe CPRI port on the RRU.

BBU alarm cable Both ends of the cable shouldbe connected on site.

One end is connected to theEXT-ALM port on the UEIUor the UPEU.The other end is connected tothe corresponding externaldevice.

2.2.2 PGND CableThis describes the PGND cable. The PGND cable ensures the grounding of the BBU.

Appearance

The green and yellow PGND cable is a single cable with a cross-sectional area of 6 mm2. Bothends of the cable are OT terminals. If you prepare the cable by yourself, it is recommended thatyou use a copper-based cable with a minimum cross-sectional area of 6 mm2.

Figure 2-10 shows the PGND cable.

Figure 2-10 PGND cable

2.2.3 Power CableThis describes the power cable. Either -48 V power cable or +24 V power cable can be used,depending on the power input.


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AppearanceThe power cable has a 3V3 connector at one end and bare wires at the other end. Based on theconnector of the power distribution device, appropriate terminals are added to the bare end onsite. Figure 2-11 shows the power cable by taking OT terminals at the bare end as an example.

Figure 2-11 Power cable

(1) 3V3 connector (2) OT terminal

NOTE

There are two –48 V power cables with one in blue and the other in black. The +24 V power cables havethe same appearance to the –48 V power cables, but they differ in color. The +24 V power cable are in redand black.

Pin AssignmentThe power cable is a 2-wire cable. Table 2-15 and Table 2-16 describe the pin assignment forthe wires of the power cable.

Table 2-15 Pin assignment for wires of the -48 V power cable

Pin on the 3V3Connector

Color Description

A1 Blue -48 V

A2 - -

A3 Black GND

Table 2-16 Pin assignment for wires of the +24 V power cable

Pin on the 3V3 Connector Color Description

A1 Red +24 V

A2 - -

A3 Black GND

2.2.4 E1 CableThis describes the E1 cable. It connects the BBU3900 to the RNC and transmits baseband signals.



2-17

Structure

The E1 cables are of two types: 75-ohm E1 coaxial cable and 120-ohm E1 twisted pair cable.

One end of the E1 cable is a DB26 male connector. The connector at the other end of the cableshould be made on site according to site requirements. Figure 2-12 shows an E1 cable.

Figure 2-12 E1 cable

Pin Assignment

Table 2-17 and Table 2-18 describe the pin assignment for the wires of the E1 cable.

NOTE

In Table 2-17, "Tip" refers to a wire in the E1 coaxial cable, and "Ring" refers to an external conductor ofthe cable.

Table 2-17 Pin assignment for the wires of the 75-ohm E1 coaxial cable

Pins of the DB26Male Connector

Wire Type Coaxial Series No. Cable Label

X1.1 Tip 1 RX1+

X1.2 Ring RX1-

X1.3 Tip 3 RX2+

X1.4 Ring RX2-

X1.5 Tip 5 RX3+

X1.6 Ring RX3-

X1.7 Tip 7 RX4+

X1.8 Ring RX4-

X1.19 Tip 2 TX1+

X1.20 Ring TX1-

X1.21 Tip 4 TX2+

X1.22 Ring TX2-

X1.23 Tip 6 TX3+

X1.24 Ring TX3-


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Wire Type Coaxial Series No. Cable Label

X1.25 Tip 8 TX4+

X1.26 Ring TX4-

Table 2-18 Pin assignment for the wires of the 120-ohm E1 twisted pair cable


Wire Color Wire Type Cable Labels

X.1 Blue Twisted pair cable RX1+

X.2 White RX1-

X.3 Orange Twisted pair cable RX2+

X.4 White RX2-

X.5 Green Twisted pair cable RX3+

X.6 White RX3-

X.7 Brown Twisted pair cable RX4+

X.8 White RX4-

X.19 Gray Twisted pair cable TX1+

X.20 White TX1-

X.21 Blue Twisted pair cable TX2+

X.22 Red TX2-

X.23 Orange Twisted pair cable TX3+

X.24 Red TX3-

X.25 Green Twisted pair cable TX4+

X.26 Red TX4-

2.2.5 E1 Surge Protection Transfer CableThis describes the E1 surge protection transfer cable. It connects the UELP to the main controlboard.

Appearance

The E1 surge protection transfer cable has a DB26 male connector at one end and a DB25 maleconnector at the other end, as shown in Figure 2-13.



2-19

Figure 2-13 E1 surge protection transfer cable

(1) DB25 male (2) DB26 male

Pin AssignmentTable 2-19 describes the pin assignment for the wires of the E1 surge protection transfer cable.

Table 2-19 Pin assignment for the wires of the E1 surge protection transfer cable

Pin on the DB26 MaleConnector

Wire Type Pin on the DB25 MaleConnector

X1.20 Twisted pair X2.2

X1.19 X2.3


X1.3 X2.5


X1.21 X2.7


X1.5 X2.9


X1.23 X2.11


X1.7 X2.13


X1.2 X2.15


X1.26 X2.25


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2.2.6 Monitoring Signal Cable Between the APMI and the BBUThis describes the monitoring signal cable between the APMI and the BBU. It transmits theenvironment monitoring signals of the power cabinet to the BBU.

Appearance

The monitoring signal cable between the APMI and the BBU has an RJ45 connector at one endand four bare wires at the other end. Figure 2-14 shows the monitoring signal cable betweenthe APMI and the BBU.

Figure 2-14 Monitoring signal cable between the APMI and the BBU

(1) RJ45 connector

Pin Assignment

Table 2-20 describes the pin assignment for the wires of the monitoring signal cable betweenthe APMI and the BBU.

Table 2-20 Pin assignment for the wires of the monitoring signal cable between the APMI andthe BBU

Pin on theRJ45Connector

Color X2 to X5 Ends Description Terminal on theAPMI

X1.1 White X2 Twisted pair TX+

X1.2 Orange X3 TX-

X1.4 Blue X4 Twisted pair RX+

X1.5 White X5 RX-

2.2.7 CPRI Optical CableThis describes the CPRI optical cable. It connects the BBU to the RRU and transmits CPRIsignals between them.

Appearance

The CPRI optical cable is a multi-mode 2-wire cable with DLC connectors at both ends. Figure2-15 shows the CPRI optical cable.



2-21

Figure 2-15 CPRI optical cable

(1) DLC connector (2) Label on the fiber tail

(3) Fiber tail

Pin Assignment

Table 2-21 describes the pin assignment for the fiber tails of the CPRI optical cable.

Table 2-21 Pin assignment for the fiber tails of the CPRI optical cable

Label Color Connect to...

1A Orange RX port on the RRU

1B Gray TX port on the RRU

2A Orange TX port on the BBU

2B Gray RX port on the BBU

2.2.8 Alarm CableThis describes the alarm cable. It transmits alarm signals from external devices to the BBU.

Appearance

The alarm cable of the BBU has an RJ45 connector at each end, as shown in Figure 2-16. OneRJ45 connector at one end, however, may be removed and an appropriate terminal may be addedaccording to the field requirements.

Figure 2-16 Alarm cable

(1) RJ45 connector

Pin Assignment

Table 2-22 describes the pin assignment for the wires of the alarm cable.


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Table 2-22 Pin assignment for the wires of the alarm cable

Pin on the RJ45Connector

Pin on the RJ45Connector

Wire Color Wire Type

X1.1 X2.1 White and orange Twisted pair

X1.2 X2.2 Orange

X1.3 X2.3 White and green Twisted pair

X1.6 X2.6 Green

X1.5 X2.5 White and blue Twisted pair

X1.4 X2.4 Blue

X1.7 X2.7 White and brown Twisted pair

X1.8 X2.8 Brown

2.3 BBU3900 Auxiliary EquipmentThe BBU3900 auxiliary equipment consists of the APM30 and the DCDU-03B. You can chooseone or more types of auxiliary equipment when installing the BBU3900.

2.3.1 APM30The advanced power module 30 (APM30) is an integrated backup power system, which can beinstalled outdoors. The APM30 consists of the power cabinet, battery cabinet, and transmissioncabinet. The power cabinet provides the DBS with power distribution, surge protection, andbackup power for a short period. It also provides space for installing the transmission equipment.The battery cabinet supplies backup power to the DBS for a long period. The transmission cabinetprovides 11 U space for installing the transmission equipment.

2.3.2 DCDU-03BAs an auxiliary device of the distributed BTS, the DCDU-03B provides the DC power solutionto meet the requirement of rapid network deployment.

2.3.1 APM30The advanced power module 30 (APM30) is an integrated backup power system, which can beinstalled outdoors. The APM30 consists of the power cabinet, battery cabinet, and transmissioncabinet. The power cabinet provides the DBS with power distribution, surge protection, andbackup power for a short period. It also provides space for installing the transmission equipment.The battery cabinet supplies backup power to the DBS for a long period. The transmission cabinetprovides 11 U space for installing the transmission equipment.

Power Cabinet

The power cabinet provides the DBS and mini BTSs with –48 V DC power and backup powerfor a short period, and provides space for installing the transmission equipment. It also performsfunctions such as battery management and monitoring, and surge protection.



2-23

l Maximum DC power output: –48 V/90 A

l Backup power for a short period: batteries of –48 V (24 Ah)

l Space for user equipment: 5 U

Battery CabinetThe battery cabinet is optional. It supplies backup power to the equipment for a long time incertain situations. The battery cabinet supports -48 V (50 Ah) or -48 V (92 Ah) built-in batterygroups. A maximum volume of -48 V (184 Ah) can be realized through parallel connection.

Transmission CabinetThe transmission cabinet, which is optional, provides 11 U space for installing the userequipment. If a heater is installed in the 1 U space at the transmission cabinet, the transmissioncabinet provides 10 U space for installing the user equipment.

For detailed structure and functions of the APM30, refer to the APM 30 User Guide.

2.3.2 DCDU-03BAs an auxiliary device of the distributed BTS, the DCDU-03B provides the DC power solutionto meet the requirement of rapid network deployment.

AppearanceFigure 2-17 shows the DCDU-03B.

Figure 2-17 DCDU-03B

PortsFigure 2-18 shows the ports on the DCDU-03B panel.


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Figure 2-18 Ports on the DCDU-03B panel

SW0

OFF

ON

SW1

OFF

ON

SW2

OFF

ON

SW3

OFF

ON

SW4

OFF

ON

SW5

OFF

ON

SW6

OFF

ON

SW7

OFF

ON

SW8

OFF

ONNEG(-)

RTN(+)

INPUT

NE

G(-

) LOAD0 LOAD1 LOAD2 LOAD3 LOAD4 LOAD5 LOAD6 LOAD7 LOAD8

RTN

(+)

PG

ND

ALM

Table 2-23 describes the ports on the DCDU-03B panel.

Table 2-23 Parameters for the ports on the DCDU-03B panel

Parameter Specification Standard Cross-Sectional Area(mm2)

Remarks

DC inputterminal

Supports M6 2-hole OTterminal.

16 Supports input power cablesranging from 6 mm2 to 25 mm2.

DC outputterminal

LOADO-LOAD8(from left to right)LOAD0-LOAD5provide 20 A DC outputand LOAD6-LOAD8provide 12 A DCoutput.

2.5 l Three rows of wiring terminalsfor output: NEG(-), RTN(+), andPGND, where, the last threewiring terminals of the PGNDsupport the grounding of M4 2-hole OT terminal.

l Supports a maximum of 6 mm2output power cable.

Surgeprotectionalarm wiringterminal

Supports 2-PIN cordend terminal.

- 2-PIN cord end terminal regardlessof polarity.

FunctionThe DCDU-03B is applied for indoor DC power distribution. It can be installed in the 19-inchspace or on the wall. All the cables are routed from the front panel. The primary functions areas follows:



2-25

l Supporting the –48 V DC power input (voltage ranging from –38.4 V DC to –57 V DC)

l Providing nine -48 V DC power outputs for boards and modules in the cabinet

l Providing surge protection of 10 kA in differential mode and 15 kA in common mode, andproviding dry contact for surge protection failure


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3 Maintaining BBU3900 Hardware

About This Chapter

After the site is put into use, routine maintenance on the BBU is required to ensure that it runsproperly in the long term.

3.1 Maintenance Items of the BBUThe maintenance items consist of the checking of fans, equipment surface, equipment cleanness,and LEDs.

3.2 Powering On and Powering Off the BBUThis describes how to power on and power off the BBU. When powering on the BBU, you shouldcheck the status of the LEDs on the BBU. When powering off the BBU, you can perform normalpower-off or emergency power-off operation based on the actual situations.

3.3 Replacing the BBU PartsThis describes how to replace the faulty UBFU, UPEU, UEIU, GTMU, UELP, and opticalmodule.

BBU3900 GSMUser Guide 3 Maintaining BBU3900 Hardware


3-1

3.1 Maintenance Items of the BBUThe maintenance items consist of the checking of fans, equipment surface, equipment cleanness,and LEDs.

Maintenance Items of the EquipmentTable 3-1 lists the maintenance items associated with the BBU.

Table 3-1 Maintenance items associated with the BBU

Item Interval Operation Instructions Reference Standard

Checking thefans

Weekly,monthly, orquarterly

Check the fans. Alarms related to the fansare not present.

Checking theequipmentsurface

Monthly orquarterly

Check whether there aredents, cracks, holes, orcorrosion on the surface ofthe equipment and whetherthe cabinet label is legible.

None.

Checking theequipmentcleanness

Monthly orquarterly

Check whether theequipment is clean.

The surface of theequipment is clean and nodust is accumulated insidethe cabinet.

Checking theLEDs

Monthly orquarterly

Check whether theequipment operatesnormally by observing theLEDs on the equipment.

For details about the statusof the LEDs, refer to 2.1.2Boards and Module ofthe BBU3900.

3.2 Powering On and Powering Off the BBUThis describes how to power on and power off the BBU. When powering on the BBU, you shouldcheck the status of the LEDs on the BBU. When powering off the BBU, you can perform normalpower-off or emergency power-off operation based on the actual situations.

3.2.1 Powering On the BBUBefore powering on the BBU, set the power switch on the BBU to ON and determine theoperation status of the BBU based on the status of the LEDs.

3.2.2 Powering Off the BBUThe BBU power-off is classified into normal power-off and emergency power-off.

3.2.1 Powering On the BBUBefore powering on the BBU, set the power switch on the BBU to ON and determine theoperation status of the BBU based on the status of the LEDs.

3 Maintaining BBU3900 HardwareBBU3900 GSM

User Guide


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Prerequisitel The hardware and cables of the BBU are installed.

l The voltage of the external input power ranges from –38.4 V DC to –57 V DC.

Procedure

Step 1 Power on the BBU by setting its power switch to ON.

Step 2 Check the status of the three LEDs on the BBU panel, namely RUN, ALM, and ACT, and thenproceed with the subsequent operations based on the status of the LEDs.

If... Then...

l The RUN LED is on,

l The ALM LED is on for 1s.

l The ACT LED is on for 1s.

The board operates normally. Go to Step 3.

l The RUN LED is on,

l The ALM LED is on,

l The ACT LED is on,

The board does not work properly. Rectify thefaults in the following manner:l Verify that the power cable is securely

connected.l Reset the board.

l Remove the board and check whether thereare damaged pins. If there are damagedpins, replace the board. If there are nodamaged pins, reinstall the board.

Check the LEDs. If the states of the LEDs arenormal, go to Step 3. If the states of the LEDsare not normal, contact Huawei TechnicalSupport.

Step 3 View the status of the other LEDs on the BBU panel.

Step 4 Take corresponding actions based on the LED status.

If... Then...

The BBU runs normally, The power-on operation is complete.

The BBU is faulty, Rectify the fault, and then go to Step 1.

----End

3.2.2 Powering Off the BBUThe BBU power-off is classified into normal power-off and emergency power-off.



3-3

Procedure

Step 1 Choose normal power-off or emergency power-off based on the actual situation.

If... Then...

The BBU is powered off in the case of anequipment swap or a foreseeable regionalblackout,

Go to Step 2 to perform the normal power-off.

The BBU incurs electric spark, smog, waterimmersion, and so on,

Go to Step 3 to perform the emergencypower-off.

Step 2 To perform the normal power-off, do as follows:

1. Set the power switch of the BBU to OFF.

2. Set the MCB on the PDU that corresponds to the BBU to OFF.

3. Set the MCB on the external power device that corresponds to the BBU to OFF.

Step 3 Set the MCB on the external power device that corresponds to the BBU to OFF. If time allows,set the power switch of the BBU to OFF , and then set the MCB on the PDU that correspondsto the BBU to OFF.

----End

3.3 Replacing the BBU PartsThis describes how to replace the faulty UBFU, UPEU, UEIU, GTMU, UELP, and opticalmodule.

3.3.1 Replacing the UBFUThe UBFU is the fan module in the BBU. It works with the air inlet box in the cabinet to forma ventilation path. During the replacement of the UBFU, the heat generated by the BBU mightnot be properly ventilated and, with the increase of the temperature, an overtemperature alarmmight be triggered. The services, however, are not affected.

3.3.2 Replacing a UPEUThe UPEU is the power module of the BBU and provides power for the boards in the BBU. TheUPEU supports the –48 V DC input. During the replacement of the UPEU, the BBU is poweredoff and the ongoing-services are disrupted.

3.3.3 Replacing the UEIUThe Universal Environment Interface Unit (UEIU) is used to transmit the monitoring signals ofthe service boards in the BBU. During the replacement of the UEIU, the external devices cannotbe monitored.

3.3.4 Replacing the GTMUAs the basic transmission and control entity of the BBU, the GTMU controls and manages theentire BTS. It provides the interfaces associated with reference clock, power supply, OM, andexternal alarm collection. During the replacement of the GTMU, the services carried by the BTSare disrupted.

3.3.5 Replacing the UELP


User Guide


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The UELP is used for E1/T1 surge protection of the BBU. Each UELP provides surge protectionfor four E1/T1 signals. The UELP replacement interrupts the E1/T1 links. Thus, the ongoingBTS services are disrupted.

3.3.6 Replacing the Optical ModuleThe optical module provides the electrical-optical interface for the optical transmission betweenthe BBU and other devices. During the replacement of the optical module, the optical cable isremoved. Thus, the CPRI signal transmission is disrupted.

3.3.1 Replacing the UBFUThe UBFU is the fan module in the BBU. It works with the air inlet box in the cabinet to forma ventilation path. During the replacement of the UBFU, the heat generated by the BBU mightnot be properly ventilated and, with the increase of the temperature, an overtemperature alarmmight be triggered. The services, however, are not affected.

Prerequisitel The number and types of faulty UBFUs are determined, and new UBFUs are available.

l The installation positions of the faulty UBFUs are recorded.

ContextIt takes about three minutes to replace a UBFU. The duration of the replacement involves theremoval of the faulty UBFU, the installation of the new UBFU, and the time required for theoperation of the UBFU.

Procedure

Step 1 Loosen the screws on the panel of the UBFU, as shown in Figure 3-1.

Figure 3-1 Loosening the screws

Step 2 Remove the faulty UBFU from the slot.



3-5

Step 3 Slide the new UBFU into the slot of the faulty UBFU.

Step 4 Fasten the screws on the panel of the new UBFU.

Step 5 Check the STATE LED on the panel of the module and take actions accordingly.

If... Then...

The green STATE LED blinks slowly (on for1 second and off for 1 second).

On the Board Management window of theSite Maintenance Terminal System, checkwhether the UBFU runs normally, as shownin Figure 3-2.

The green STATE LED does not blinkslowly (on for 1 second and off for 1 second).

Power off the BBU, and then remove theboard. Check whether there is a damaged pin.If there is no damaged pin, reinstall the board,and then check whether the board runsnormally. If there is a damaged pin, replacethe board.

Figure 3-2 Checking whether the UBFU runs normally

If... Then...

The UBFU icon is displayed white, The board runs properly. Then, go to the nextstep.

The UBFU icon is displayed in other color, The board runs improperly. Reinstall theboard.

Step 6 On the Board Management window of the Site Maintenance Terminal System, right-click theboard to be queried, and choose Board Warning from the shortcut menu, as shown in Figure3-3.


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Figure 3-3 Querying UBFU alarms

If... Then...

Alarms are not present, The replacement is successful.

Alarms are present, Rectify the fault as recommended.

NOTE

The alarms associated with the fans are the overtemperature alarm, undertemperature alarm, block alarm,and communication alarm.

----End

PostrequisiteContact the local Huawei office to handle the faulty UBFU.

3.3.2 Replacing a UPEUThe UPEU is the power module of the BBU and provides power for the boards in the BBU. TheUPEU supports the –48 V DC input. During the replacement of the UPEU, the BBU is poweredoff and the ongoing-services are disrupted.

Prerequisitel The number and types of faulty UPEUs are obtained, and new UPEUs are available.

l The installation positions of the faulty UPEUs and the interconnection relations of thecables on the UPEU panels are recorded.

l The required tools and materials such as an ESD wrist strap/ESD gloves and an ESD box/ESD bag are kept ready.



3-7

Context

It takes about 10 minutes to replace the board. The duration of the replacement involves theremoval of the cables and the faulty UPEU, the installation of the new UPEU and the cables,and the time elapsed for the operation of the UPEU.

CAUTIONTake correct ESD prevention measures, such as wearing an ESD wrist strap or ESD gloves, toavoid static damage to boards, modules, and electronic components.

Procedure

Step 1 Power off the BBU by referring to 3.2.2 Powering Off the BBU.

Step 2 Remove the cables from the panel of the faulty UPEU.

Step 3 Loosen the screws on the panel of the UPEU, as shown in Figure 3-4.


EXT-ALM1 EXT-ALM0 MON1 MON0

PWR

UPEU

RUN

Step 4 Remove the faulty UPEU from the slot.

Step 5 Put the faulty UPEU into the ESD bag.

Step 6 Slide the new UPEU into the slot of the faulty UPEU.

Step 7 Fasten the screws on the panel of the new UPEU.

Step 8 Install the cables on the panel of the new board according to the recorded installation positions.

Step 9 Power on the BBU by referring to 3.2.1 Powering On the BBU.

Step 10 Check the RUN LED on the panel of the new UPEU and take action accordingly.

If... Then...

The RUN LED is on On the Board Management window of theSite Maintenance Terminal System, checkwhether the UPEU runs normally, as shownin Figure 3-5.


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If... Then...

The RUN LED is off Take the following measures to rectify thefault:l Verify that the power switch is set to ON.

l Power off the BBU and check whether thepower cable is securely connected.

l Power OFFthe BBU, and then remove theboard. Check whether there are damagedpins. If there are no damaged pins, reinstallthe board. If there is a damaged pin, replacethe board.

Power on the BBU and check whether theLEDs blink normally.

Figure 3-5 Checking whether the UPEU runs properly

If... Then...

The UPEU icon is displayed white The board runs properly. Go to the next step.

The UPEU icon is displayed in other color, The board runs improperly. Reinstall theboard.




3-9

Figure 3-6 Querying the alarm information of the UPEU

If... Then...

Alarms are not present The replacement is successful.

Alarms are present Rectify the fault as recommended.

----End

Postrequisite

Contact the local Huawei office to handle the faulty UPEU.

3.3.3 Replacing the UEIUThe Universal Environment Interface Unit (UEIU) is used to transmit the monitoring signals ofthe service boards in the BBU. During the replacement of the UEIU, the external devices cannotbe monitored.

Prerequisitel The number and types of faulty UEIUs are determined, and new UEIUs are available.

l The installation positions of the faulty UEIUs and the interconnection relations of the cableson the UEIU panels are recorded.

l The required tools and materials such as ESD wrist strap/ESD gloves and ESD box/ESDbag are kept ready.

Context

This board is hot swappable.


User Guide


Issue 04 (2008-09-05)

It takes about 5 minutes to replace the board. The duration of the replacement involves theremoval of the cables and the faulty UEIU, the installation of the new UEIU and the cables, andthe time elapsed for the operation of the UEIU.


Procedure

Step 1 Remove the cables from the panel of the faulty UEIU.

Step 2 Loosen the screws on the panel of the UEIU, as shown in Figure 3-7.


EXT-ALMOEXT-ALM1 MONOMON1UEIU

Step 3 Remove the faulty UEIU from the slot.

Step 4 Put the faulty UEIU into an ESD bag.

Step 5 Slide the new UEIU into the slot of the faulty UEIU.

Step 6 Fasten the screws on the panel of the new board.

Step 7 Install the cables on the panel of the new board according to the recorded installation positions.

----End

Postrequisite

Contact the local Huawei office to handle the faulty UEIU.

3.3.4 Replacing the GTMUAs the basic transmission and control entity of the BBU, the GTMU controls and manages theentire BTS. It provides the interfaces associated with reference clock, power supply, OM, andexternal alarm collection. During the replacement of the GTMU, the services carried by the BTSare disrupted.



3-11

Prerequisitel The number and types of faulty GTMUs are determined, and new GTMUs are available.

l The installation positions of the faulty GTMUs and the interconnection relations for thecables on the GTMU panels are recorded.

l The required tools and materials such as ESD wrist strap/ESD gloves and ESD box/ESDbag are available.

Context

This board is hot swappable.

It takes about 15 minutes to replace the board. The duration of the replacement involves theremoval of the cables and the faulty board, the installation of the new board and the cables, andthe time required for the operation of the board.


Procedure

Step 1 Remove the cables from the panel of the faulty GTMU.

Step 2 Loosen the screws on the panel of the GTMU, as shown in Figure 3-8.


GTMU

ETH FE0 FE1

CPRI0 CPRI2 CPRI4


TX0 RX0 TX1 RX1 TX2 RX2 TX3 RX3 TX4 RX4 TX5 RX5 LIU0 LIU2

LIU1 LIU3

USB TST E1/T1 RST

RUNALMACT

1 2 3 4 5

Step 3 Remove the faulty GTMU from the slot.

Step 4 Put the faulty GTMU into an ESD bag.

Step 5 Slide the new GTMU into the slot of the faulty GTMU.

Step 6 Fasten the screws on the panel of the new GTMU.

Step 7 Install the cables on the panel of the new GTMU according to the recorded installation positions.

Step 8 Check the LEDs on the panel of the new board.


User Guide


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If... Then...

The RUN LED is on, and the ALM andACT LEDs are off,

On the Board Management window of the SiteMaintenance Terminal System, check whether theGTMU runs normally, as shown in Figure 3-9.

The RUN, ALM, or ACT LED is inother state,

Power off the BBU, and then remove the GTMU.Check whether there is a damaged pin. If there isno damaged pin, reinstall the board, and then checkwhether the board runs normally. If there is adamaged pin, replace the board.

Figure 3-9 Checking whether the GTMU runs properly

If... Then...

The GTMU icon is displayed green, The board runs properly. Then, go to the nextstep.

The GTMU icon is displayed in other color, The board runs improperly. Reinstall theboard.

Step 9 On the Board Management window of the Site Maintenance Terminal System, right-click theGTMU to be queried, and choose Board Information from the shortcut menu. Check whetherthe software version of the GTMU matches the software version of the BTS, as shown in Figure3-10.



3-13

Figure 3-10 Querying the software version of the GTMU

If... Then...

The software version of the GTMU matchesthe current BTS software version,

Go to the next step.

The software version of the GTMU does notmatch the current BTS software version,

Load and activate the software.



User Guide


Issue 04 (2008-09-05)

Figure 3-11 Querying GTMU alarms

If... Then...

Alarms are not present, The replacement is successful.

Alarms are present, Rectify the fault as recommended.

Step 11 Check whether the board can process the services. Perform dialing tests after the boardreplacement. If the board before the replacement supports PS services, check whether the boardafter the replacement can process the PS services, such as web browsing, to ensure that the boardcan provide services properly.

----End

Postrequisite

Contact the local Huawei office to handle the faulty GTMU.

3.3.5 Replacing the UELPThe UELP is used for E1/T1 surge protection of the BBU. Each UELP provides surge protectionfor four E1/T1 signals. The UELP replacement interrupts the E1/T1 links. Thus, the ongoingBTS services are disrupted.

Prerequisitel The number and types of faulty UELPs are determined, and new UELPs are kept ready.

l The installation positions of the UELP and the interconnection relations of the cables onthe UELP panel are recorded.




3-15

Context

It takes about two minutes to replace the board. The duration of the replacement involves theremoval of the cables and the faulty board, the installation of the new board and the cables, andthe time required for the operation of the board.


Procedure

Step 1 Remove the cables from the panel of the faulty UELP.

Step 2 Loosen the screws on the panel of the UELP, as shown in Figure 3-12.


INSIDE OUTSIDE

UELP

Step 3 Remove the faulty UELP from the slot.

Step 4 Slide the new UELP into the slot of the faulty UELP.

Step 5 Fasten the screws on the panel of the new UELP.

Step 6 Install the cables on the panel of the new UELP according to the recorded installation positions.

Step 7 Perform the dialing test to verify that the services are resumed.

----End

Postrequisite

Contact the local Huawei office to handle the faulty UELP.

3.3.6 Replacing the Optical ModuleThe optical module provides the electrical-optical interface for the optical transmission betweenthe BBU and other devices. During the replacement of the optical module, the optical cable isremoved. Thus, the CPRI signal transmission is disrupted.

Prerequisitel The number and types of faulty optical modules are determined, and new optical modules

are available.l The installation positions of the faulty optical modules and optical cables are recorded. The

interconnection relations for the optical cables are also recorded.


User Guide


Issue 04 (2008-09-05)


ContextThe optical module can be installed in the CPRI0-CPRI5 ports on the GTMU.

The optical module is hot swappable.

It takes about five minutes to replace the optical module of the BBU. The duration of thereplacement involves the removal of the optical cable and the faulty optical module, theinstallation of the new optical module, the connection of the optical cable to the optical module,and the time elapsed for the restoration of the CPRI links.

CAUTIONl You must take proper ESD prevention measures, for example, wear an ESD wrist strap or

a pair of ESD gloves to prevent the boards, modules, or electrical components from beingdamaged by static electricity generated by your body.

l Do not look into the optical module after removing the optical cable from the opticalmodule.

Procedure

Step 1 Press the bulge on the optical cable connector, and then remove the connector from the faultyoptical module.

Step 2 Turn the puller on the faulty optical module outwards, and then pull out the optical module fromthe slot and so from the BBU.

Step 3 Install the new optical module into the BBU.

Step 4 Remove the dustproof caps from the optical connector and from the optical module, and theninsert the connector into the new module.

Step 5 On the Board Management window of the Site Maintenance Terminal System, double-clickthe GTMU. On the displayed Topology Management window, check whether the transmissionof CPRI signals is resumed by viewing the status of the RRU to which the replaced optical cableis connected, as shown in Figure 3-13.



3-17

Figure 3-13 Checking whether the CPRI signal transmission is resumed

If... Then...

The RRU module icon is displayed green, The CPRI signal transmission is resumed.The replacement of the optical cable issuccessful.

The RRU module icon is not displayed green, The CPRI signal transmission is abnormal.Check whether the connection of the opticalcable is secured.

----End

PostrequisiteContact the local Huawei office to handle the faulty optical module.


User Guide


Issue 04 (2008-09-05)

Bbu3900 Gsm User Guide-(v300r008_04)

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Transcript of Bbu3900 Gsm User Guide-(v300r008_04)