BTS3900 LTE Hardware Description(V100R002C00_02)

BTS3900 LTEV100R002C00

Hardware Description

Issue 02

Date 2010-07-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2010. 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 trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respective holders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees or representationsof any kind, either express or implied.

The 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 all statements, information, andrecommendations in this document do not constitute the warranty of any kind, express or implied.

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

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

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http://www.huawei.com

mailto:[email protected]

About This Document

PurposeThis document provides reference for planning and deploying the BTS3900 LTE (hereinafterreferred to as BTS3900). It describes the configurations, functions, and specifications of thesubracks, boards, and modules, and the details such as cable types, cable connections, andconnector specifications.

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

Product Name Product Version

BTS3900 LTE V100R002C00

Intended Audiencel System engineers

l Base station installation engineers

l Site maintenance engineers

Organization1 Changes in the BTS3900 LTE Hardware Description

This chapter describes the changes in the BTS3900 LTE Hardware Description.

2 Exterior of the BTS3900 Cabinet

The BTS3900 cabinet is designed in compliance with the IEC297 standard. It is a vertical cabinet.

3 Board and module Configurations

This chapter describes the configuration principles of the boards and modules in the cabinet.

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4 Power System of the BTS3900

The BTS3900 supports 110 V AC, 220 V AC, and -48 V DC power supplies. When AC poweris supplied, the power is converted to -48 V DC power for the base station.

5 Configurations of the Monitoring System

The monitoring signals and alarm signals for the components of the cabinet must be convergedinto the BBU before processed.

6 BTS3900 Components

This chapter describes the components of the BTS3900, which are the BBU3900, LRFUs,DCDU-01, FAN unit, ELU, power system, and optional components.

7 BTS3900 Cables

This chapter describes the BTS3900 cables. The BTS3900 cables consist of the PGND cable,power cable, transmission cable, CPRI cable, signal cable, and RF cable.

8 BTS3900 Auxiliary Equipment

This chapter describes the auxiliary equipment of the BTS3900.

ConventionsSymbol Conventions

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

Symbol Description

Indicates a hazard with a high level of risk, which if notavoided,will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, whichif not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if notavoided,could result in equipment damage, data loss,performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or savetime.

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

General Conventions

The general conventions that may be found in this document are defined as follows.

Convention Description

Times New Roman Normal paragraphs are in Times New Roman.

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Boldface Names of files, directories, folders, and users are inboldface. For example, log in as user root.

Italic Book titles are in italics.

Courier New Examples of information displayed on the screen are inCourier New.

Command Conventions

The command conventions that may be found in this document are defined as follows.


Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

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

{ x | y | ... } Optional items are grouped in braces and separated byvertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated byvertical bars. One item is selected or no item is selected.

{ x | y | ... }* Optional items are grouped in braces and separated byvertical bars. A minimum of one item or a maximum of allitems can be selected.

[ x | y | ... ]* Optional items are grouped in brackets and separated byvertical bars. Several items or no item can be selected.

GUI Conventions

The GUI conventions that may be found in this document are defined as follows.


Boldface Buttons, menus, parameters, tabs, window, and dialog titlesare in boldface. For example, click OK.

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

Keyboard Operations

The keyboard operations that may be found in this document are defined as follows.

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Format Description

Key Press the key. For 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 meansthe 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 release the primary mouse button without movingthe pointer.

Double-click Press the primary mouse button twice continuously andquickly without moving the pointer.

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

About This DocumentBTS3900 LTE


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Contents

About This Document...................................................................................................................iii

1 Changes in the BTS3900 LTE Hardware Description.........................................................1-1

2 Exterior of the BTS3900 Cabinet..............................................................................................2-1

3 Board and module Configurations.........................................................................................3-13.1 Module Configurations in the Cabinet............................................................................................................3-23.2 Board Configuration of the BBU3900............................................................................................................3-5

4 Power System of the BTS3900..................................................................................................4-14.1 Configuration of Circuit Breakers and Connections of Power Cables for the BTS3900................................4-24.2 Power Distribution of the BTS3900................................................................................................................4-2

5 Configurations of the Monitoring System............................................................................5-15.1 Monitoring Scheme.........................................................................................................................................5-25.2 External Monitoring Port................................................................................................................................5-45.3 Monitoring Board Configuration....................................................................................................................5-6

6 BTS3900 Components................................................................................................................6-16.1 Introduction to the BBU3900..........................................................................................................................6-2

6.1.1 Exterior of the BBU3900.......................................................................................................................6-26.1.2 Boards and Modules of the BBU3900...................................................................................................6-3

6.2 LRFU.............................................................................................................................................................6-176.3 MRFU............................................................................................................................................................6-216.4 DCDU-01......................................................................................................................................................6-266.5 Fan Box.........................................................................................................................................................6-276.6 ELU...............................................................................................................................................................6-286.7 DC/DC Power System...................................................................................................................................6-29

6.7.1 Components of the DC/DC Power System..........................................................................................6-296.7.2 PSU (DC/DC).......................................................................................................................................6-306.7.3 Power Subrack (DC/DC)......................................................................................................................6-32

6.8 AC/DC Power System...................................................................................................................................6-336.8.1 Components of the AC/DC Power System..........................................................................................6-336.8.2 PMU.....................................................................................................................................................6-346.8.3 PSU (AC/DC).......................................................................................................................................6-376.8.4 Power Subrack (AC/DC)......................................................................................................................6-39

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7 BTS3900 Cables...........................................................................................................................7-17.1 List of BTS3900 Cables..................................................................................................................................7-27.2 PGND Cables..................................................................................................................................................7-67.3 BTS3900 Power Cable....................................................................................................................................7-7

7.3.1 Power Cable Connections......................................................................................................................7-77.3.2 Power Input Cable of the Cabinet........................................................................................................7-107.3.3 DCDU-01 Power Cable........................................................................................................................7-137.3.4 BBU Power Cable................................................................................................................................7-137.3.5 Fan Power Cable..................................................................................................................................7-147.3.6 RFU Power Cable.................................................................................................................................7-15

7.4 BTS3900 Transmission Cable.......................................................................................................................7-167.4.1 Transmission Cable Connections.........................................................................................................7-167.4.2 E1/T1 Cable..........................................................................................................................................7-177.4.3 FE/GE Cable........................................................................................................................................7-207.4.4 FE/GE Optical Cable............................................................................................................................7-21

7.5 BTS3900 CPRI cables...................................................................................................................................7-227.5.1 CPRI Cable Connections of the BTS3900...........................................................................................7-227.5.2 CPRI Electrical Cable..........................................................................................................................7-26

7.6 BTS3900 Signal Cable..................................................................................................................................7-277.6.1 Signal Cable Connections....................................................................................................................7-277.6.2 Monitoring Signal Cable for the PMU.................................................................................................7-307.6.3 Monitoring Signal Cable for the PSU (DC/DC)..................................................................................7-317.6.4 In-Position Signal Cable for the PSU (DC/DC)...................................................................................7-327.6.5 Fan Box Monitoring Signal Cable.......................................................................................................7-337.6.6 Monitoring Signal Cable for the EMU.................................................................................................7-347.6.7 BBU Alarm Cable................................................................................................................................7-347.6.8 GPS Clock Signal Cable......................................................................................................................7-367.6.9 Signal Cable for the ELU.....................................................................................................................7-37

7.7 BTS3900 RF Cable.......................................................................................................................................7-377.7.1 RF Cable Connections of the BTS3900...............................................................................................7-387.7.2 RF Jumper............................................................................................................................................7-40

8 BTS3900 Auxiliary Equipment................................................................................................8-18.1 PS4890 Cabinet...............................................................................................................................................8-28.2 EMU................................................................................................................................................................8-2

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Figures

Figure 2-1 BTS3900 cabinet................................................................................................................................ 2-1Figure 3-1 Module configurations in the BTS3900 (-48 V DC) cabinet............................................................. 3-2Figure 3-2 Module configurations in the BTS3900 (+24 V DC) cabinet............................................................ 3-3Figure 3-3 Module configurations in the BTS3900 (AC) cabinet........................................................................3-3Figure 3-4 Slots in the BBU3900.........................................................................................................................3-5Figure 3-5 Typical board configurations of the BBU3900.................................................................................. 3-7Figure 4-1 Power distribution of the BTS3900 (-48 V DC) cabinet....................................................................4-3Figure 4-2 Power distribution of the BTS3900 (+24 V DC) cabinet...................................................................4-3Figure 4-3 Power distribution of the BTS3900 (AC) cabinet..............................................................................4-4Figure 5-1 Monitoring scheme for the BTS3900 (-48 V DC)..............................................................................5-2Figure 5-2 Monitoring scheme for the BTS3900 (+24 V DC).............................................................................5-3Figure 5-3 Monitoring scheme for the BTS3900 (AC)........................................................................................5-3Figure 5-4 Slot assignment for the two UPEUs...................................................................................................5-4Figure 6-1 BBU3900............................................................................................................................................6-2Figure 6-2 The position of the ESN..................................................................................................................... 6-3Figure 6-3 Panel of the LMPT............................................................................................................................. 6-3Figure 6-4 Panel of the LBBP..............................................................................................................................6-6Figure 6-5 Panel of the LBBP..............................................................................................................................6-6Figure 6-6 Panel of the FAN................................................................................................................................6-9Figure 6-7 Panel of the UPEUA.........................................................................................................................6-10Figure 6-8 Panel of the UPEUB.........................................................................................................................6-10Figure 6-9 Slots in the BBU...............................................................................................................................6-11Figure 6-10 Panel of the USCUb1 (0.5 U).........................................................................................................6-12Figure 6-11 Panel of the USCUb2 (1 U)............................................................................................................6-12Figure 6-12 Panel of the UTRP..........................................................................................................................6-14Figure 6-13 DIP switches on the UTRP.............................................................................................................6-16Figure 6-14 Panel of the LRFU..........................................................................................................................6-18Figure 6-15 Logical structure of the LRFU........................................................................................................6-19Figure 6-16 Panel of the MRFU.........................................................................................................................6-22Figure 6-17 Working principles of the MRFU...................................................................................................6-23Figure 6-18 Panel of the DCDU-01...................................................................................................................6-26Figure 6-19 Panel of the fan box........................................................................................................................6-27Figure 6-20 Structure of an ELU........................................................................................................................6-29

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Figure 6-21 DC/DC power system.....................................................................................................................6-30Figure 6-22 Panel of the PSU (DC/DC).............................................................................................................6-31Figure 6-23 Power Subrack (DC/DC)................................................................................................................6-32Figure 6-24 AC/DC power system.....................................................................................................................6-34Figure 6-25 PMU................................................................................................................................................6-34Figure 6-26 Front panel of the PMU..................................................................................................................6-35Figure 6-27 Right panel of the PMU..................................................................................................................6-37Figure 6-28 Panel of the PSU (AC/DC).............................................................................................................6-37Figure 6-29 Panel of the power subrack (AC/DC).............................................................................................6-39Figure 7-1 PGND cable for the cabinet................................................................................................................7-6Figure 7-2 PGND cable for the modules..............................................................................................................7-6Figure 7-3 Power cable connections of the BTS3900 (-48 V).............................................................................7-8Figure 7-4 Power cable connections of the BTS3900 (+24 V)............................................................................7-9Figure 7-5 Power cable connections of the BTS3900 (220 V)..........................................................................7-10Figure 7-6 Structure of the -48 V power cable...................................................................................................7-11Figure 7-7 Structure of the +24 V power cable..................................................................................................7-11Figure 7-8 Structure of an AC power cable (220 V AC, single phase)..............................................................7-12Figure 7-9 Structure of the power cable.............................................................................................................7-13Figure 7-10 Structure of the BBU power cable..................................................................................................7-14Figure 7-11 Structure of the FAN power cable..................................................................................................7-14Figure 7-12 Structure of the RFU power cable..................................................................................................7-15Figure 7-13 Transmission over E1 cable............................................................................................................7-16Figure 7-14 Transmission over FE/GE electrical cable.....................................................................................7-17Figure 7-15 Transmission over FE/GE optical cable.........................................................................................7-17Figure 7-16 E1/T1 cable.....................................................................................................................................7-18Figure 7-17 FE/GE cable....................................................................................................................................7-20Figure 7-18 FE/GE optical cable (FC and LC connectors)................................................................................7-21Figure 7-19 FE/GE optical cable (SC and LC connectors)................................................................................7-21Figure 7-20 FE/GE optical cable (LC and LC connectors)................................................................................7-21Figure 7-21 CPRI cable connections in the 3 x 10 MHz 2T2R configuration...................................................7-23Figure 7-22 CPRI cable connections in the 3 x 20 MHz 2T2R configuration...................................................7-24Figure 7-23 CPRI cable connections in the 3 x 10 MHz 4T4R configuration...................................................7-25Figure 7-24 CPRI cable connections in the 3 x 20 MHz 4T4R configuration...................................................7-26Figure 7-25 CPRI electrical cable......................................................................................................................7-26Figure 7-26 Signal cable connections of the BTS3900 (-48 V DC)...................................................................7-28Figure 7-27 Signal cable connections of the BTS3900 (+24 V DC)..................................................................7-29Figure 7-28 Signal cable connections of the BTS3900 (AC).............................................................................7-30Figure 7-29 Monitoring signal cable for the PMU.............................................................................................7-31Figure 7-30 Monitoring signal cable for the PSU (DC/DC)..............................................................................7-32Figure 7-31 In-position signal cable for the PSU (DC/DC)...............................................................................7-32Figure 7-32 Fan box monitoring signal cable....................................................................................................7-33Figure 7-33 Monitoring signal cable for the EMU.............................................................................................7-34

FiguresBTS3900 LTE


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Figure 7-34 BBU alarm cable............................................................................................................................7-35Figure 7-35 GPS clock signal cable...................................................................................................................7-36Figure 7-36 Signal cable for the ELU................................................................................................................7-37Figure 7-37 RF cable connections in the 3 x 10 MHz 2T2R or 3 × 20 MHz 2T2R configuration....................7-38Figure 7-38 RF cable connections in the 3 x 10 MHz 4T4R configuration.......................................................7-39Figure 7-39 RF jumper.......................................................................................................................................7-40Figure 8-1 Cable connections between the BTS3900 and the PS4890................................................................8-2

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Tables

Table 3-1 Component of the cabinet....................................................................................................................3-4Table 3-2 Board configuration of the BBU3900..................................................................................................3-6Table 4-1 Applicable AC input voltage ranges....................................................................................................4-1Table 4-2 Applicable DC input voltage ranges....................................................................................................4-1Table 4-3 Recommended configuration of circuit breakers and connections of power cables............................4-2Table 5-1 Ports on the two UPEUs.......................................................................................................................5-4Table 5-2 Pin assignments for the wires connected to the ports for Boolean inputs on the BBU........................5-5Table 5-3 Monitoring board configurations of the BTS3900...............................................................................5-6Table 6-1 LEDs on the LMPT..............................................................................................................................6-4Table 6-2 LEDs and their status...........................................................................................................................6-4Table 6-3 Ports on the LMPT...............................................................................................................................6-5Table 6-4 Specifications of the LBBP..................................................................................................................6-7Table 6-5 LEDs on the LBBP...............................................................................................................................6-7Table 6-6 LEDs indicating the status of the SFP links.........................................................................................6-8Table 6-7 Ports on the LBBP................................................................................................................................6-8Table 6-8 LED on the FAN and its status............................................................................................................6-9Table 6-9 LEDs on the UPEU and its status......................................................................................................6-11Table 6-10 Ports on the panel of the UPEU.......................................................................................................6-11Table 6-11 LEDs on the USCU..........................................................................................................................6-13Table 6-12 LEDs on the TOD port.....................................................................................................................6-14Table 6-13 Ports on the USCU...........................................................................................................................6-14Table 6-14 LEDs on the panel of the UTRP......................................................................................................6-15Table 6-15 Ports on the panel of the UTRP........................................................................................................6-16Table 6-16 Settings of SW1 on the UTRP.........................................................................................................6-16Table 6-17 Settings of SW2 on the UTRP.........................................................................................................6-17Table 6-18 Settings of SW3 on the UTRP.........................................................................................................6-17Table 6-19 LEDs on the MRFU.........................................................................................................................6-20Table 6-20 Ports on the panel of the LRFU........................................................................................................6-21Table 6-21 LEDs on the MRFU panel................................................................................................................6-24Table 6-22 Ports on the MRFU panel.................................................................................................................6-25Table 6-23 Ports, terminals, and MCBs on the panel of the DCDU-01.............................................................6-26Table 6-24 LEDs on the panel of the fan box.....................................................................................................6-28Table 6-25 Ports on the panel of the fan box......................................................................................................6-28

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Table 6-26 Components of the DC/DC power system.......................................................................................6-30Table 6-27 LEDs on the panel of the PSU (DC/DC)......................................................................................... 6-31Table 6-28 Ports and terminals on the power subrack (DC/DC)........................................................................6-33Table 6-29 Components of the AC/DC power system.......................................................................................6-34Table 6-30 Ports and switch on the PMU...........................................................................................................6-35Table 6-31 LEDs on the panel of the PMU........................................................................................................6-36Table 6-32 LEDs on the panel of the PSU (AC/DC)......................................................................................... 6-38Table 6-33 Terminals and switch on the power subrack (AC/DC)....................................................................6-40Table 7-1 Power Cables and PGND Cables.........................................................................................................7-2Table 7-2 Transmission Cables............................................................................................................................7-4Table 7-3 CPRI Cables.........................................................................................................................................7-4Table 7-4 Signal Cables........................................................................................................................................7-5Table 7-5 RF Cables.............................................................................................................................................7-6Table 7-6 Power cables of the BTS3900 (-48 V).................................................................................................7-8Table 7-7 Power cables of the BTS3900 (+24 V)................................................................................................7-9Table 7-8 Power cables of the BTS3900 (220 V).............................................................................................. 7-10Table 7-9 Description on the -48 V power cable................................................................................................7-11Table 7-10 Description on the +24 V power cable.............................................................................................7-11Table 7-11 Description on the 220 V power cable.............................................................................................7-12Table 7-12 DCDU-01 power cable.....................................................................................................................7-13Table 7-13 Pin assignment of the power cable between the DCDU and the BBU............................................ 7-14Table 7-14 Pin assignment of the fan power cable.............................................................................................7-15Table 7-15 Pin assignment of the RFU power cable..........................................................................................7-15Table 7-16 Transmission over E1 cable.............................................................................................................7-16Table 7-17 Transmission over FE/GE electrical cable.......................................................................................7-17Table 7-18 Transmission over FE/GE optical cable...........................................................................................7-17Table 7-19 Connectors of the 75-ohm E1 coaxial cable.....................................................................................7-18Table 7-20 Pin assignment for the wires of the 75-ohm E1 coaxial cable.........................................................7-19Table 7-21 Pin assignment for the wires of the 120-ohm E1 twisted pair cable................................................7-19Table 7-22 Pin assignment for the wires of the FE/GE cable............................................................................ 7-20Table 7-23 CPRI cable connections of 3 x 10 MHz 2T2R.................................................................................7-23Table 7-24 CPRI cable connections of 3 x 20 MHz 2T2R.................................................................................7-24Table 7-25 CPRI cable connections of 3 x 10 MHz 4T4R.................................................................................7-25Table 7-26 CPRI cable connections of 3 x 20 MHz 4T4R.................................................................................7-26Table 7-27 Signal cables of the BTS3900 (-48 V DC).......................................................................................7-28Table 7-28 Signal cables of the BTS3900 (+24 V DC)......................................................................................7-29Table 7-29 Signal cables of the BTS3900 (AC).................................................................................................7-30Table 7-30 Pin assignment of the monitoring signal cable of the PMU.............................................................7-31Table 7-31 Pin assignment of the in-position signal cable for the PSU (DC/DC).............................................7-32Table 7-32 Pin assignment of the fan box monitoring signal cable................................................................... 7-33Table 7-33 Pin assignment of the monitoring signal cable for the EMU...........................................................7-34Table 7-34 Pin assignment for the wires of the BBU alarm cable.....................................................................7-35

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Table 7-35 Pin assignment of the signal cable for the ELU...............................................................................7-37Table 8-1 Cables connected between the BTS3900 and the PS4890...................................................................8-2

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1 Changes in the BTS3900 LTE HardwareDescription

This chapter describes the changes in the BTS3900 LTE Hardware Description.

02 (2010-07-30)

This is the commercial issue.

Compared with issue 01 (2010-05-20), this issue is added with the following topics:

l 4 Power System of the BTS3900

l 4.1 Configuration of Circuit Breakers and Connections of Power Cables for theBTS3900

Compared with issue 01 (2010-05-20), this issue incorporates the following changes:

Contents Change Description

4.2 Power Distribution of the BTS3900 Figures for the power distribution of thecabinet.

3.2 Board Configuration of the BBU3900 The typical board configurations of theBBU3900 is modified.

LMPT The description about the ports on the LMPTis modified.

6.1.1 Exterior of the BBU3900 The position of the ESN is added.

Compared with issue 01 (2010-05-20), UEIU and typical configurations of the BTS3900 aredeleted.

01 (2010-05-20)

This is the draft issue.

Compared with issue V100R001 03 (2010-01-31), this issue is added with the following topics:

BTS3900 LTEHardware Description 1 Changes in the BTS3900 LTE Hardware Description


1-1

l 4.2 Power Distribution of the BTS3900

l 5 Configurations of the Monitoring System

l 6.3 MRFU

l 3 x 20 MHz 4T4R

Compared with issue V100R001 03 (2010-01-31), this issue incorporates the following changes:

Contents Change Description

LBBP The description about the LBBPc is added.

Compared with the issue V100R001 03 (2010-01-31), no information is deleted.

1 Changes in the BTS3900 LTE Hardware DescriptionBTS3900 LTE


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2 Exterior of the BTS3900 Cabinet

The BTS3900 cabinet is designed in compliance with the IEC297 standard. It is a vertical cabinet.

Figure 2-1 shows the BTS3900 cabinet.

Figure 2-1 BTS3900 cabinet

BTS3900 LTEHardware Description 2 Exterior of the BTS3900 Cabinet


2-1

3 Board and module Configurations

About This Chapter

This chapter describes the configuration principles of the boards and modules in the cabinet.

3.1 Module Configurations in the CabinetThe BTS3900 cabinet uses a modular design. The main components of the cabinet are theBBU3900, RFU, DCDU-01, and fan box. The power equipment (DC/DC) and power equipment(AC/DC) are optional components of the cabinet.

3.2 Board Configuration of the BBU3900This section describes the principles for configuring the boards in the BBU3900.

BTS3900 LTEHardware Description 3 Board and module Configurations


3-1

3.1 Module Configurations in the CabinetThe BTS3900 cabinet uses a modular design. The main components of the cabinet are theBBU3900, RFU, DCDU-01, and fan box. The power equipment (DC/DC) and power equipment(AC/DC) are optional components of the cabinet.

There are three types of BTS3900 cabinets, namely, the BTS3900 (-48 V DC) cabinet, BTS3900(+24 V DC) cabinet, and BTS3900 (AC) cabinet.

Figure 3-1 Module configurations in the BTS3900 (-48 V DC) cabinet

(1) RFU (2) Fan box (3) Air inlet

(4) BBU3900 (5) DCDU-01 -

3 Board and module ConfigurationsBTS3900 LTE



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Figure 3-2 Module configurations in the BTS3900 (+24 V DC) cabinet


(4) BBU3900 (5) DCDU-01 (6) Power equipment (DC/DC)

Figure 3-3 Module configurations in the BTS3900 (AC) cabinet




3-3

(4) BBU3900 (5) DCDU-01 (6) Power equipment (AC/DC)

Table 3-1 describes the components of the cabinet.

Table 3-1 Component of the cabinet

Module Optional/Mandatory

MaximumNumber ofModulesConfiguredin a SingleCabinet

Remarks

RFU Optional 6 The RFU performs modulation anddemodulation between baseband signals andRF signals, processes data, and combines anddivides signals.

Fillerpanel

Optional 6 To ensure proper ventilation of the cabinet, theslot in the RFU subrack that is not installedwith an RFU must be installed with a fillerpanel.

Fan box Mandatory 1 The fan dissipates the heat in the cabinet.

BBU3900 Optional 1 The BBU3900 processes the baseband signalsand enables interaction between the basestation and the BSC or RNC.

DCDU-01 Mandatory 1 The DCDU-01 provides DC power to eachcomponent of the cabinet.

Powerequipment(DC/DC)

Optional 1 The power equipment (DC/DC) convertsexternal +24 V DC power into -48 V DC powerand provides power to the components of thecabinet.

Powerequipment(AC/DC)

Optional 1 The power equipment (AC/DC) convertsexternal 220 V AC single-phase, 220 V ACthree-phase, and 110 V AC dual-live-wirepower into -48 V DC power and providespower to the components of the cabinet.




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Module Optional/Mandatory

MaximumNumber ofModulesConfiguredin a SingleCabinet

Remarks

None - - l There is a 3 U idle space in the BTS3900(-48 V DC) cabinet for customer equipment.– The optional devices must meet the

requirement of working in the ambienttemperature of not lower than +55°C.

– The BTS3900 (-48 V DC) cabinet doesnot supply power to optionaltransmission devices from the customer.

l There is no idle space in the BTS3900 (+24V DC) cabinet.

l There is no idle space in the BTS3900 (AC)cabinet.

3.2 Board Configuration of the BBU3900This section describes the principles for configuring the boards in the BBU3900.

Slots in the BBU3900Figure 3-4 shows the slots in the BBU3900.

Figure 3-4 Slots in the BBU3900

Board Configuration of the BBU3900Table 3-2 describes the principles for configuring the boards in the BBU3900.



3-5

Table 3-2 Board configuration of the BBU3900

Board Optional orMandatory

MaximumQuantity

Slot Remarks

LMPT Mandatory 2 Slot 6 or slot 7 A single LMPTis alwaysconfigured inslot 7.

LBBP Mandatory 3 Slot 1 to slot 3 A single LBBPis preferentiallyconfigured inslot 3.

FAN Mandatory 1 Slot 16 The FAN isconfigured inslot 16.

UPEU Mandatory 2 Slot 18 or slot 19 A single UPEUis alwaysconfigured inslot 19.

UTRP Optional 2 Slot 4 or slot 5 The UTRP ispreferentiallyconfigured inslot 4.

USCU Optional 1 Slot 4, 5, 1 or 0. A single USCUis preferentiallyconfigured inslot 5. When the1 U-high USCUis used, it isconfigured inslot 5, and slot 4is also occupied.If slot 4 or 5 isalreadyoccupied, theUSCU isprerentiallyconfigured inslot 1. When the1 U-high USCUis used, it isconfigured inslot 1, and slot 0is also occupied.

Figure 2 shows the typical board configurations of the BBU3900.




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Figure 3-5 Typical board configurations of the BBU3900



3-7

4 Power System of the BTS3900

About This Chapter

The BTS3900 supports 110 V AC, 220 V AC, and -48 V DC power supplies. When AC poweris supplied, the power is converted to -48 V DC power for the base station.

Table 4-1 and Table 4-2 list the input voltage ranges supported by the BTS3900.

Table 4-1 Applicable AC input voltage ranges

Power Input Type Rated Voltage Working Voltage

200 V AC single-phase 220 V AC to 240 V AC 176 V AC to 290 V AC

220 V AC three-phase 220 V AC to 240 V AC 176 V AC to 290 V AC

110 V AC dual-live-wire 100 V AC to 120 V AC 90 V AC to 135 V AC

Table 4-2 Applicable DC input voltage ranges

Power Input Type Rated Voltage

-48 V DC -38.4 V DC to -57 V DC

4.1 Configuration of Circuit Breakers and Connections of Power Cables for the BTS3900This section lists the recommended configuration of circuit breakers and connections of powercables for the BTS3900. The recommended configurations are all based on a fully configuredbase station, which has the peak output power. The power requirements for the customerequipment in the cabinet are also included.

4.2 Power Distribution of the BTS3900This section describes the power distribution modes of the BTS3900.

BTS3900 LTEHardware Description 4 Power System of the BTS3900


4-1

4.1 Configuration of Circuit Breakers and Connections ofPower Cables for the BTS3900

This section lists the recommended configuration of circuit breakers and connections of powercables for the BTS3900. The recommended configurations are all based on a fully configuredbase station, which has the peak output power. The power requirements for the customerequipment in the cabinet are also included.

Table 4-3 lists the recommended configuration of circuit breakers and connections of powercables for the BTS3900.

Table 4-3 Recommended configuration of circuit breakers and connections of power cables

Power Input Type Requirements forCircuit Breakerson CustomerEquipment

Cross-SectionalArea of PowerCables

Length of PowerCables

-48 V DC 1 x 100 A 16 mm2 ≤15 m

+24 V DC 1 x 160 A or 2 x 100A

2 x 25 mm2 ≤15 m

200 V AC single-phase

1 x 63 A or 1 x 50 A(both using a two-level magneticcircuit breaker)

6 mm2 ≤40 m

110 V AC dual-live-wire

220 V AC three-phase

1 x 25 A or 1 x 32 A(both using a three-level magneticcircuit breaker)

2.5 mm2 ≤40 m

NOTE

All power cables must comply with local standards.

4.2 Power Distribution of the BTS3900This section describes the power distribution modes of the BTS3900.

Power Distribution of the BTS3900 (-48 V DC) CabinetThe external power equipment supplies -48 V DC power to the DCDU-01 of the BTS3900 (-48V DC) cabinet, and the DCDU-01 feeds power to each module in the BTS3900 cabinet. Figure4-1 shows the power distribution principles.

4 Power System of the BTS3900BTS3900 LTE



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Figure 4-1 Power distribution of the BTS3900 (-48 V DC) cabinet

NOTE

MCB: miniature circuit breaker

Power Distribution of the BTS3900 (+24 V DC) Cabinet

The external power equipment supplies +24 V DC power to the DC/DC power equipment of theBTS3900 (+24 V DC) cabinet. The DC/DC power equipment converts +24 V DC power into-48 V DC power and feeds -48 V DC power to the DCDU-01. The DCDU-01 feeds power toeach module in the cabinet. Figure 4-2 shows the power distribution principles.

Figure 4-2 Power distribution of the BTS3900 (+24 V DC) cabinet

BTS3900 LTEHardware Description 4 Power System of the BTS3900


4-3

Power Distribution of the BTS3900 (AC) CabinetThe external power equipment supplies single-phase or three-phase 220 V AC power, or dual-live-line 110 V AC power to the BTS3900 (AC) cabinet. The AC/DC power equipment convertsthe AC power into -48 V DC power and feeds the -48 V DC power to the DCDU-01. TheDCDU-01 feeds power to each module in the cabinet. Figure 4-3 shows the power distributionprinciples.

Figure 4-3 Power distribution of the BTS3900 (AC) cabinet

4 Power System of the BTS3900BTS3900 LTE



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5 Configurations of the Monitoring System

About This Chapter

The monitoring signals and alarm signals for the components of the cabinet must be convergedinto the BBU before processed.

5.1 Monitoring SchemeThis section describes the principles of the monitoring signal cable connections on the mandatoryand optional modules in the BTS3900.

5.2 External Monitoring Port

5.3 Monitoring Board ConfigurationThe monitoring board configurations are affected by the combinations of different cabinets andcabinet types.

BTS3900 LTEHardware Description 5 Configurations of the Monitoring System


5-1

5.1 Monitoring SchemeThis section describes the principles of the monitoring signal cable connections on the mandatoryand optional modules in the BTS3900.

Monitoring scheme for the BTS3900 (-48 V DC)Figure 5-1 shows the monitoring scheme for the BTS3900 (-48 V DC). If a device is not presentin the network, the cable connections for the device can be ignored.

Figure 5-1 Monitoring scheme for the BTS3900 (-48 V DC)

Monitoring scheme for the BTS3900 (+24 V DC)Figure 5-1 shows the monitoring scheme for the BTS3900 (+24 V DC). If a device is not presentin the network, the cable connections for the device can be ignored.

5 Configurations of the Monitoring SystemBTS3900 LTE



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Figure 5-2 Monitoring scheme for the BTS3900 (+24 V DC)

Monitoring scheme for the BTS3900 (AC)Figure 5-1 shows the monitoring scheme for the BTS3900 (AC). If a device is not present inthe network, the cable connections for the device can be ignored.

Figure 5-3 Monitoring scheme for the BTS3900 (AC)



5-3

5.2 External Monitoring PortThe monitoring ports are configured on the BBU, EMU, and EMUA for monitoring externalsignals of the base station.

The BBU is configured with two UPEUs for monitoring at most. Each board has two Booleaninput ports and two RS485 input ports, and each Boolean input port receives four Boolean inputs.Figure 5-4 shows the slot assignment for the two UPEUs.

Figure 5-4 Slot assignment for the two UPEUs

Table 5-1 lists the ports on the two UPEUs.

Table 5-1 Ports on the two UPEUs

Slot Board Label Connector Quantity Description

Slot19 UPEU EXT-ALM0 RJ-45connector

1 Port forBooleaninputs 8 to 11

EXT-ALM1 RJ-45connector

1 Port forBooleaninputs 12 to15

MON0 RJ-45connector

1 Port forRS485 input0

MON1 RJ-45connector


Slot18 UPEU EXT-ALM0 RJ-45connector


EXT-ALM1 RJ-45connector





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Slot Board Label Connector Quantity Description

MON0 RJ-45connector


MON1 RJ-45connector


Table 5-2 describes the pin assignments for the wires connected to the ports for Boolean inputson the BBU.

Table 5-2 Pin assignments for the wires connected to the ports for Boolean inputs on the BBU

Pin Monitored Signals

Slot19 (UPEU) Slot18 (UEIU)

EXT_ALM0 EXT_ALM1 EXT_ALM0 EXT_ALM1

1.1 0+ 4+ 8+ 12+

1.2 0- (GND) 4- (GND) 8- (GND) 12- (GND)

1.3 1+ 5+ 9+ 13+

1.6 1- (GND) 5- (GND) 9- (GND) 13- (GND)

1.5 2+ 6+ 10+ 14+

1.4 2- (GND) 6- (GND) 10- (GND) 14- (GND)

1.7 3+ 7+ 11+ 15+

1.8 3- (GND) 7- (GND) 11- (GND) 15- (GND)

The EMU and EMUA are used for environment monitoring indoors and outdoors respectively.The EMU and EMUA enable the monitoring of analog values and Boolean signals with the portfor monitoring analog inputs, port for detecting the Boolean inputs, and port for controlling theexternal Boolean outputs.l When the base station is deployed indoors, the EMU is configured for monitoring the analog

values and Boolean signals. For details about the monitoring ports on the EMU, seeHUAWEI QCKG1EMU User Guide.

l When the base station is deployed outdoors, the EMUA is configured for monitoring theanalog values and Boolean signals. For details about the monitoring ports on the EMUA,see EMUA User Guide.



5-5

5.3 Monitoring Board ConfigurationThe monitoring board configurations are affected by the combinations of different cabinets andcabinet types.

Table 5-3 describes the monitoring board configurations of the BTS3900.

Table 5-3 Monitoring board configurations of the BTS3900

Cabinet Type Number of Dry ContactAlarms

Monitoring Board

-48 V DC cabinet/ACcabinet

None UPEU

1 to 16 UPEU+UPEU

17 to 32 UPEU+UPEU+EMU

+24 V DC cabinet None UPEU

1 to 16 UPEU+UPEU+EMU

17 to 32

NOTE

l The analog values can be monitored only by the EMU.

l The EMU with sensors can be configured according to site requirements.




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6 BTS3900 Components

About This Chapter

This chapter describes the components of the BTS3900, which are the BBU3900, LRFUs,DCDU-01, FAN unit, ELU, power system, and optional components.

6.1 Introduction to the BBU3900The BBU3900 implements Operation & Maintenance (OM) management, signal processing,and radio resource management of the entire eNodeB system and provides ports for datacommunication between the eNodeB and the Mobile Management Entity/Server-GateWay(MME/S-GW).

6.2 LRFULTE Radio Frequency Units (LRFUs) work in Frequency Division Duplex (FDD) mode.

6.3 MRFUOne Multi-Mode Radio Frequency Unit (MRFU) supports a maximum of six carriers.

6.4 DCDU-01The Direct Current Distribution Unit-01 (DCDU-01) supplies DC power to each component inthe cabinet.

6.5 Fan BoxOne fan box has four fans and dissipates the heat in the cabinet.

6.6 ELUThe Electronic Label Unit (ELU) reports the cabinet type information to the fan box.

6.7 DC/DC Power SystemThe DC/DC power system converts +24 V DC power into -48 V DC power.

6.8 AC/DC Power SystemThe AC/DC power system converts 220 V AC power into -48 V DC power.

BTS3900 LTEHardware Description 6 BTS3900 Components


6-1

6.1 Introduction to the BBU3900The BBU3900 implements Operation & Maintenance (OM) management, signal processing,and radio resource management of the entire eNodeB system and provides ports for datacommunication between the eNodeB and the Mobile Management Entity/Server-GateWay(MME/S-GW).

The BBU3900 performs the following functions:

l Provides ports for data communication between the eNodeB and the MME/S-GW.l Provides Common Public Radio Interface (CPRI) ports for communication between the

BBU3900 and the RRUs/RFUs.l Provides USB ports, which facilitate eNodeB upgrade when a USB disk is inserted into the

LMPT during software installation and data configuration.l Provides the OM channel for connection to the OMC.l Processes uplink and downlink data.l Manages the entire eNodeB system in terms of OM and signaling processing.l Provides ports for the system clock.l Provides ports for alarm monitoring.

6.1.1 Exterior of the BBU3900The BBU3900, which features a case structure, is 19 inches wide and 2 U high.

6.1.2 Boards and Modules of the BBU3900This section describes the boards and module of the BBU3900 in terms of their functions, ports,LEDs, and DIP switches.

6.1.1 Exterior of the BBU3900The BBU3900, which features a case structure, is 19 inches wide and 2 U high.

The dimensions of the BBU3900 are 442 mm x 310 mm x 86 mm (W x D x H). Figure 6-1shows the BBU3900.

Figure 6-1 BBU3900

6 BTS3900 ComponentsBTS3900 LTE



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The Electronic Serial Number (ESN) is unique to a Network Element (NE) for identification, itis used during the commissioning of the base station. The ESN shown on the label is attachedto the mounting ear of the BBU. Figure 6-2 shows the position of the ESN.

Figure 6-2 The position of the ESN

6.1.2 Boards and Modules of the BBU3900This section describes the boards and module of the BBU3900 in terms of their functions, ports,LEDs, and DIP switches.

LMPTThe LTE Main Processing & Transmission Unit (LMPT) is the main control and transmissionunit of the BBU3900. It manages the entire eNodeB in terms of OM and signaling processingand provides clock signals for the BBU3900.

PanelFigure 6-3 shows the panel of the LMPT.

Figure 6-3 Panel of the LMPT

TX

SFP 0

RX TX

SFP 1

RX

USB TST ETH FE/GE0 FE/GE1GPSRST

RUNALMACT

LMPT

LMPTb

FunctionsThe LMPT performs the following functions:

l Performs configuration management, equipment management, performance monitoring,signal processing, and radio resource management.



6-3

l Controls all boards in the system.

l Provides the system clock.

l Processes signals between the eNodeB and the MME/S-GW.

LEDs

The LMPT provides three LEDs on the panel. Table 6-1 describes the LEDs.

Table 6-1 LEDs on the LMPT

LED Color Status Description

RUN Green On There is power supply, butthe board is faulty.

Off There is no power supply,or the board is faulty.

On for 1s and offfor 1s

The board works properly.

On for 0.125s andoff for 0.125s

Software is being loaded tothe board.

ALM Red On The board is reportingalarms.

Off No alarm is generated.

ACT Green On The board is in active mode.

Off The board is in standbymode.

Besides the preceding three LEDs, there are LEDs indicating the connection status of the FEoptical port, FE electrical port, and serial Ethernet port for commissioning. Each of the LEDs ispositioned near the relevant port without any label on the panel of the board. Table 6-2 describesthe LEDs and their status.

Table 6-2 LEDs and their status


SFP 0 and SFP 1 Green (LINK) On The connection issuccessful.

Off There is noconnection.

Orange (ACT) Blinking The port is receivingor transmittingsignals.




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Off The port does notreceive or transmitsignals.

ETH Orange (ACT) Blinking The port is receivingor transmittingsignals.


Green (LINK) On The connection issuccessful.


FE/GE0 and FE/GE1 Green (LINK) On The connection issuccessful.


Orange (ACT) Blinking The port is receivingor transmittingsignals.


Ports

Table 6-3 describes the ports on the LMPT.

Table 6-3 Ports on the LMPT

Label Connector Type Quantity Function

SFP 0 and SFP 1 LC 2 Indicates Ethernetoptical ports, which areused to connect to thetransmission device orgateway

USB USB 1 Loads software to theboard

TST USB 1 Tests

ETH RJ-45 1 Commissions



6-5

Label Connector Type Quantity Function

FE/GE0 and FE/GE1

RJ-45 2 Indicates Ethernetelectrical ports, whichare used to connect tothe transmissiondevice or gateway

GPS SMA 1 Receives GPS signals

RST - 1 Resets the BBU3900

NOTE

The ports labeled SFP0 and FE/GE0 on the LMPT are for only one GE transmission line, and the two portscannot be used at the same time.

The ports labeled SFP1 and FE/GE1 on the LMPT are for another GE transmission line, and the two portscannot be used at the same time.

LBBP

The LTE BaseBand Processing unit (LBBP) in the BBU3900 processes the baseband signals.

Panel

The LBBP has two types of panels, as shown in Figure 6-4 and Figure 6-5.

Figure 6-4 Panel of the LBBP

CPRI 0 CPRI 1 CPRI 2 CPRI 3 CPRI 4 CPRI 5

TX RX TX RX TX RX TX RX TX RX TX RXLBBP RUNALMACT

LBBPb

Figure 6-5 Panel of the LBBP

CPRI 0 CPRI 1 CPRI 2 CPRI 3 CPRI 4 CPRI 5

TX RX TX RX TX RX TX RX TX RX TX RXLBBP RUNALMACT

LBBPc

Function

The LBBP has the following functions:

l Processes uplink and downlink baseband signals

l Provides CPRI ports connected to the RF module

Table 6-4 describes the specifications of the LBBP.




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Table 6-4 Specifications of the LBBP

Board Number of Cells Bandwidth of theCell

AntennaConfiguration

LBBPb 3 10M 2T2R

1 20M 2T2R

1 10M 4T4R

LBBPc 3 20M 2T2R

6 10M 2T2R

1 20M 4T4R

LEDThere are three LEDs on the panel of the LBBP. Table 6-5 describes the LEDs on the LBBP.

Table 6-5 LEDs on the LBBP

Label Color Status Description

RUN Green On There is powersupply, but the boardis faulty.

Off There is no powersupply, or the boardis faulty.

On for 1s and off for1s

The board is runningproperly.

On for 0.125s and offfor 0.125s

Data is being loadedto the board, or theboard is not started.

ALM Red On An alarm is reported,indicating a fault inthe board.

Off The board is normal.

ACT Green On The board works inactive mode.

Off The board works instandby mode.

The LBBP provides six LEDs indicating the status of the SFP links. The LEDs are positionedabove the SFP ports. Table 6-6 describes the LEDs.



6-7

Table 6-6 LEDs indicating the status of the SFP links


TX RX Red/Green Steady green The CPRI link isavailable.

Steady red The optical modulefails to receivesignals.

Blinking red (on for0.125s and off for0.125s)

The RRU on the CPRIlink is faulty.

Blinking red (on for1s and off for 1s)

The CPRI link is outof lock(Clocksynchronization is notachieved for the CPRIsignals).

Off The SFP module is notin position or theoptical module ispowered off.

Port

Table 6-7 describes the ports on the panel of the LBBP.

Table 6-7 Ports on the LBBP

Label Connector Quantity Description

CPRI0 to CPRI5 SFP connector 6 The CPRI portsconnect to the LRRUor LRFU fortransmitting servicedata, clock signals,and synchronizationinformation

FAN

The FAN is the fan unit of the BBU3900. The FAN controls the fan speed, detects the temperatureof the fan board, and dissipates the heat in the BBU.

Panel

Figure 6-6 shows the panel of the FAN.




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Figure 6-6 Panel of the FAN

FunctionsThe FAN performs the following functions:l Controls the fan speed.

l Reports the fan status to the main control board.

l Detects the temperature of the air inlets.

l Dissipates the heat.

LEDsThe FAN has one LED, indicating the running status of the module. Table 6-8 describes theLED on the FAN and its status.

Table 6-8 LED on the FAN and its status


STATE Green On for 0.125s and offfor 0.125s

The module is notregistered, and noalarm is reported.


The module isrunning properly.

Red Off No alarm is reported.


The module isreporting alarms.



6-9

UPEUThe Universal Power and Environment Interface Unit (UPEU) is a mandatory board of theBBU3900. It converts -48 V or +24 V DC power to +12 V DC power.

PanelsThe UPEU is classified into the Universal Power and Environment Interface Unit Type A(UPEUA) and the Universal Power and Environment Interface Unit Type B (UPEUB). TheUPEUA converts -48 V DC to +12 V DC and the UPEUB converts +24 V DC to +12 V DC.Figure 6-7 shows the UPEUA panel and Figure 6-8 shows the UPEUB panel.

Figure 6-7 Panel of the UPEUA

(1) Power switch of the BBU

Figure 6-8 Panel of the UPEUB

(1) Power switch of the BBU

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

l Provides two ports for two RS485 inputs and two ports for eight Boolean signals

l Provides reverse connection protection for power cable connectors

LEDsThe UPEU has one LED that indicates the operating status of the board. Table 6-9 describes theLED and its status.




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Table 6-9 LEDs on the UPEU and its status


RUN Green On The UPEU isoperational.

Off Input power isunavailable or theboard is faulty.

Ports

The UPEU provides two RS485 ports and two ports for eight Boolean signals. When configuredin different slots, the ports on the UPEU have different functions. Figure 6-9 shows the slots inthe BBU.

Figure 6-9 Slots in the BBU

Table 6-10 describes the ports on the panel of the UPEU.

Table 6-10 Ports on the panel of the UPEU

Slot Label Connector

Quantity Description

Slot 19 PWR 3V3 1 Port for +24 V DC or -48 V DC inputpower

EXT-ALM0

RJ-45 1 Port for Boolean signal inputs 8 to 11

EXT-ALM1


MON0 RJ-45 1 Port for RS485 signal input 0


Slot 18 PWR 3V3 1 Port for +24 V DC or -48 V DC inputpower

EXT-ALM0




6-11

Slot Label Connector

Quantity Description

EXT-ALM1




USCU

This section describes the Universal Satellite card and Clock Unit (USCU).

Panel

There are two types of USCU: USCUb1 and USCUb2, as shown in Figure 6-10 and Figure6-11.

Figure 6-10 Panel of the USCUb1 (0.5 U)

Figure 6-11 Panel of the USCUb2 (1 U)

(1) GPS port (2) RGPS port (3) TOD port (4) M-1PPS port (5) BITS port

Functions

The USCU has the following functions:

l The USCU provides interface for an external RGPS device (such as a reused device of theoperator), Metro1000 device, BITS device, and TOD input.




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l The USCUb1 supports the GPS with the built-in satellite card. It is used for clocksynchronization or obtaining accurate clock signals from transmission devices.

l The USCUb2 supports GPS and GLONASS with two built-in satellite cards.

LEDTable 6-11 and Table 6-12 describe the LEDs on the USCU.

Table 6-11 LEDs on the USCU


RUN Green On There is power supply, but theboard is faulty.

Off There is no power supply, or theboard is faulty.

Blinking (on for 1sand off for 1s)

The board is running properly.

Blinking (On for0.125s and Off for0.125s)

Software is being loaded to theboard, or the board is notconfigured.

ALM Red Off The board is running properly,and no alarm is generated.

On An alarm is generated, and theboard needs to be replaced.

Blinking (on for 1sand off for 1s)

An alarm is generated. Thealarm may be caused by thefaults of the related boards orports. Therefore, whether theboard needs to be replacedcannot be determined.

ACT Green On The serial port forcommunication between theUSCU and the main controlboard is enabled.

Off The serial port forcommunication between theUSCU and the main controlboard is disabled.



6-13

Table 6-12 LEDs on the TOD port

Color Meaning Default Configuration

Green On: The TOD port isconfigured as the inputport.

The green LED of the TOD0 port is Off,and the yellow LED of the TOD0 port isOn.

Yellow Off: The TOD port isconfigured as the outputport.

The yellow LED of the TOD1 port is Off,and the green LED of the TOD1 port is On.

Ports

Table 6-13 describes the ports on the USCU.

Table 6-13 Ports on the USCU

Port Connector Description

GPS port SMA coaxialconnector

Receiving GPS signals

RGPS port PCB weldedwiring terminal

Receiving RGPS signals

TOD0 port RJ-45 connector Receiving or transmitting 1PPS+TOD signals

TOD1 port RJ-45 connector Receiving or transmitting 1PPS+TOD signals, andreceiving TOD signals from the M1000

BITS port SMA coaxialconnector

Receiving BITS clock signals, supporting adaptiveinput of 2.048 MHz and 10 MHz clock referencesource

M-1PPS port SMA coaxialconnector

Receiving 1PPS signals from the M1000

UTRP

The Universal Transmission Processing unit (UTRP) in the BBU3900 provides ports for eightE1s/T1s.

Panel

Figure 6-12 shows the panel of the UTRP.

Figure 6-12 Panel of the UTRPRUNALMACT

E1/T1(0-3)

UTRP

E1/T1(4-7)




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Functions

The UTRP performs the following functions:

l Provides ports for eight E1s/T1s based on the IP protocol.

l Performs deframing and framing of the HDLC frames, and allocates and controls 256HDLC timeslots.

LEDs

Table 6-14 describes the LEDs on the panel of the UTRP.

Table 6-14 LEDs on the panel of the UTRP


RUN Green On There is powersupply, but the boardis faulty.

Off There is no powersupply, or the boardis faulty.


The board worksproperly asconfigured.


The board is notconfigured or data isbeing loaded.


The board works inoffline mode or isbeing tested.

ALM Red On or blinking at ahigh frequency

An alarm is reported,indicating a fault inthe board.

Off The board is normal.


A minor alarm isreported.


A major alarm isreported.


A critical alarm isreported.

ACT Green On The board works inactive mode.



6-15


Off The board works instandby mode.

Ports

Table 6-15 describes the ports on the panel of the UTRP.

Table 6-15 Ports on the panel of the UTRP

Label Port Quantity Connector

E1/T1 E1/T1 2 DB26 connector

DIP Switches

There are three DIP switches on the UTRP. SW1 and SW2 are used to ground the receiver endof the E1, and SW3 is used to set the impedance of the E1 cable. SW1 corresponds to E1s 4 to7, and SW2 corresponds to E1s 0 to 3. Figure 6-13 shows the DIP switches.

Figure 6-13 DIP switches on the UTRP

Table 6-16, Table 6-17, and Table 6-18 describes the settings of the DIP switches.

Table 6-16 Settings of SW1 on the UTRP

Bit Balanced Unbalanced

1 Off On

2 Off On

3 Off On




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4 Off On



1 Off On

2 Off On

3 Off On

4 Off On

CAUTIONSW1 and SW2 are set to off (balanced) by default. When a bit error occurs on the eight E1s, thebits on SW1 and SW2 must be set to on to rectify the faults on the E1 links.


Bit 75-Ohm E1 120-Ohm E1 T1

1 On On Off

2 On On Off

3 On Off On

4 On Off On

6.2 LRFULTE Radio Frequency Units (LRFUs) work in Frequency Division Duplex (FDD) mode.

PanelFigure 6-14 shows the panel of the LRFU.



6-17

Figure 6-14 Panel of the LRFU

FunctionsThe LRFU processes uplink and downlink services and controls and monitors internal boardsor modules. Figure 6-15 shows the logical structure of the LRFU.




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Figure 6-15 Logical structure of the LRFU

The uplink RX channels implement the following functions:

l Filters and amplifies two uplink signals and performs digital down-conversion, analog-to-digital (A/D) conversion, digital Inphase Quadrature (IQ) signal demodulation, andmatched filtering.

l Performs uplink Automatic Gain Control (AGC) and stabilizes the level in the IQ digitaldomain of the BBU-RFU interface.

l Frames the IQ signals of the BBU-RFU interface.

l Reports the Received Signal Strength Indicator (RSSI).

The downlink TX channels implement the following functions:

l Deframes the IQ signals of the BBU-RFU interface.

l Shapes and filters downlink IQ signals, performs digital up-conversion, digital-to-analog(D/A) conversion, and amplifies the power.

l Reports the transmit power.

l Provides overload protection of the power amplifier.

l Enables or disables TX channels.

l Provides closed-loop power control.

l Simulates the downlink load.

The control module implements the following functions:

l Provides the interface for reporting backup power alarms.

l Provides the functions of the Remote Electrical antenna Tilt (RET) antenna.

l Supports the Tower Mounted Amplifier (TMA).

l Provides the BBU-RFU port for signal transmission by using the CPRI electrical cable oroptical cable.



6-19

LEDsTable 6-19 describes the LEDs on the panel of the LRFU.

Table 6-19 LEDs on the MRFU

Label Color State Description

RUN Green ON The power input is normal, but themodule is faulty.

OFF There is no power input, or the moduleis faulty.

ON for 1s and OFF for1s

The module runs properly.

ON for 0.125s and OFFfor 0.125s

The module is loading software or isnot started.

ALM Red ON An alarm is generated, and the moduleneeds to be replaced.

Blinking (ON for 1s andOFF for 1s)

An alarm is generated. The alarm maybe caused by the fault of the relatedmodule or port. Therefore, whether themodule needs to be replaced cannot bedetermined.

OFF No alarm is generated.

ACT Green ON The module works properly (the TXchannel is set to ON).

ON for 1s and OFF for1s

The module is running (the TXchannel is set to OFF).

VSWR Red ON (red) A VSWR-related alarm is generated atthe ANT_TX/RXA port.

Blinking (ON for 1s andOFF for 1s)

A VSWR-related alarm is generated atthe ANT_TX/RXB port.

Blinking (ON for0.125s and OFF for0.125s)

A VSWR-related alarm is generated atthe ANT_TX/RXA and ANT_TX/RXB ports.

OFF (red) No VSWR alarm is generated.

CPRI0 Red/Green On (green) The CPRI links are normal.

On (red) The reception of the optical module (orthe SFP module) is abnormal, and analarm is generated.

ON for 1s and OFF for1s (red)

The CPRI link has a loss-of-lock error.




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OFF The SFP module is out of position, orthe optical module is powered off.


On (red) The reception of the optical module (orthe SFP module) is abnormal, and analarm is generated.

ON for 1s and OFF for1s (red)


OFF The SFP module is out of position, orthe optical module is powered off.

PortTable 6-20 describes the ports on the panel of the LRFU.

Table 6-20 Ports on the panel of the LRFU

Label Connector Description

ANT_TX/RXB DIN TX/RX port for RF signalsUsed for the connection to the antenna systemANT_TX/RXA DIN

CPRI0 SFP femaleconnector

CPRI portUsed for the connection to the BBU. CPRI0 port andCPRI1 port work in mutual backup mode.


CPRI portUsed for the connection to the BBU. CPRI1 port andCPRI0 port work in mutual backup mode.

PWR 3V3 powerconnector

Power portUsed for feeding -48 V DC input power

MON RJ-45 connector Monitoring portPort for monitoring and maintenance

6.3 MRFUOne Multi-Mode Radio Frequency Unit (MRFU) supports a maximum of six carriers.

PanelFigure 6-16 shows the panel of the MRFU.



6-21

Figure 6-16 Panel of the MRFU

Functions

The MRFU has the following functions:

l Modulates and converts the signals to the TX band by up-converting the IF signals, filtersand amplifies the signals, and then transmits the signals to the antenna through the duplexer

l Receives RF signals from the antenna and performs down-conversion, amplification,analog-to-digital conversion, digital down-conversion, matched filtering, and DigitalAutomatic Gain Control (DAGC), and then transmits the signals to the BBU for furtherprocessing

l Performs power control

l Provides Voltage Standing Wave Ratio (VSWR) detection

l Supplies power to the TMA and controls the RET antenna

l Controls DPD feedback signals

l Generates the CPRI clock, recovers the CPRI clock from loss of synchronization, anddetects alarms




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Principle

The MRFU consists of the high-speed interface unit, signal processing unit, power amplifier,and duplex unit. Figure 6-17 shows the working principles of the MRFU.

Figure 6-17 Working principles of the MRFU

The high-speed interface unit has the following functions:l Transmits the signals received from the BBU to the signal processing unit

l Transmits the signals received from the signal processing unit to the BBU

The signal processing unit consists of two uplink RX channels and one downlink TX channel.

l The uplink RX channels have the following functions:– Down-convert the RF signals to IF signals

– Amplify the IF signals and performing IQ demodulation

– Convert analog signals to digital signals

– Sample digital signals

– Perform matched filtering

– Support the digital automatic gain control (DAGC)

– Encapsulate data

l The downlink TX channel has the following functions:– Decapsulats the clock signals, control signals, and data signals from the BBU and sends

them to associated units– Shapes and filters downlink signals

– Performs digital-to-analog conversion and IF output of IQ analog signals

– Performs orthogonal up-conversion of IF signals to the TX band

The power amplifier amplifies the low-power RF signals from the signal processing unit.

The duplexer has the following functions:l Multiplexes the RX signals and TX signals



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l Combines the RX signals and TX signals so that they share the same antenna channel

l Filters the RX/TX signals

LEDsTable 6-21 describes the LEDs on the MRFU panel.

Table 6-21 LEDs on the MRFU panel


RUN Green On The power input is normal, but themodule is faulty.

Off There is no power input, or the moduleis faulty.

On for 1s and off for 1s The module runs properly.


The module is loading software or isnot started.

ALM Red On An alarm is generated, and the moduleneeds to be replaced.

Blinking (on for 1s andoff for 1s)

An alarm is generated. The alarm maybe caused by the fault of the relatedmodule or port. Therefore, whether themodule needs to be replaced cannot bedetermined.

Off No alarm is generated.

ACT Green On The module works properly (TXchannel enabled).

On for 1s and off for 1s The module is running (TX channeldisabled).

VSWR Red On (red) A VSWR-related alarm is generated atthe ANT_TX/RXA port.

Blinking (on for 1s andoff for 1s)

A VSWR-related alarm is generated atthe ANT_RXB port.

Blinking (on for 0.125sand off for 0.125s)

A VSWR-related alarm is generated atthe ANT_TX/RXA and ANT_RXBports.

Off (red) No VSWR alarm is generated.


On (red) The reception of the optical module isabnormal, and an alarm is generated.




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On for 1s and off for 1s(red)


Off The SFP is out of position, or theoptical module is powered off.


On (red) The reception of the optical module isabnormal, and an alarm is generated.

On for 1s and off for 1s(red)


Off The SFP is out of position, or theoptical module is powered off.

PortsTable 6-22 describes the ports on the MRFU panel.

Table 6-22 Ports on the MRFU panel

Port Label Type Function

RF Port ANT_RXB DINconnector

RF RX port, connected to the antennasystem

ANT_TX/RXA

DINconnector

RF TX/RX port, connected to the antennasystem

CPRI interface CPRI0 SFP femaleconnector

Connected to the BBU or the upper-levelcascaded MRFU


Connected to the lower-level cascadedMRFU

Inter-MRFURF signal port

RX_INB QMA femaleconnector

Input port for diversity receive

RX_OUTA QMA femaleconnector

Output port for main receive

Power supplysocket

PWR 3V3 Introducing power input

Monitoringports

MON RJ-45 Monitoring and maintaining port



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6.4 DCDU-01The Direct Current Distribution Unit-01 (DCDU-01) supplies DC power to each component inthe cabinet.

Panel

Figure 6-18 shows the panel of the DCDU-01.

Figure 6-18 Panel of the DCDU-01

Functions

The DCDU-01 has the following functions:

l Supports one -48 V DC inputs

l Supports ten -48 V DC outputs

– One 25 A output to the SPARE2 port

– Nine 12 A outputs to other ports

l Supplies power to the BBU3900, RFUs, fan box in the cabinet

Ports

Table 6-23 describes the ports, terminals, and MCBs on the panel of the DCDU-01.

Table 6-23 Ports, terminals, and MCBs on the panel of the DCDU-01

Port Label Connector Type Description

Power inputwiringterminals

NEG(-) OT terminal Negative input wiringterminal.

RTN(+) Positive input wiringterminal.




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Port Label Connector Type Description

Power outputport

SPARE2, SPARE1,BBU, FAN, andRFU5 to RFU0

Parallel terminal Providing 10 poweroutputs to the modulessuch as the BBU3900,RFUs, and fan box.

Power switch SPARE2, SPARE1,BBU, FAN, andRFU5 to RFU0

- Powering on or poweringoff the modules such asthe BBU3900, RFUs, andfan box.

6.5 Fan BoxOne fan box has four fans and dissipates the heat in the cabinet.

PanelFigure 6-19 shows the panel of the fan box.

Figure 6-19 Panel of the fan box

FunctionsThe fan box provides the following functions:

l Ventilates the cabinet and dissipates the heat in the cabinet.

l Supports temperature detection.

l Supports two modes of fan speed adjustment: based on the temperature or controlled bythe main control unit.

l Stops the fans when the ambient temperature is low.

LEDsTable 6-24 describes the LEDs on the panel of the fan box.



6-27

Table 6-24 LEDs on the panel of the fan box


RUN Green ON for 0.125s and OFF for0.125s

The unit runs normally but thecommunication with the BBU orupper-level fan box is not established.

ON for 1s and OFF for 1s The unit runs normally and thecommunication with the BBU orupper-level fan box is established.

OFF There is no power input, or the fanbox is faulty.

ALM Red ON for 1s and OFF for 1s An alarm is generated.

OFF No alarm is generated.

PortsTable 6-25 describes the ports on the panel of the fan box.

Table 6-25 Ports on the panel of the fan box

Port Label ConnectorType

Description

Power supplysocket

-48V 3V3 Feeding -48 V DC power

Sensor port SENSOR RJ-45 For connection to the ELU

Communication port

COM OUT RJ-45 For connection to thelower-level cascaded fanbox

COM IN RJ-45 For connection to the BBUor upper-level fan box

6.6 ELUThe Electronic Label Unit (ELU) reports the cabinet type information to the fan box.

Figure 6-20 shows the structure of an ELU.




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Figure 6-20 Structure of an ELU

6.7 DC/DC Power SystemThe DC/DC power system converts +24 V DC power into -48 V DC power.

6.7.1 Components of the DC/DC Power SystemThe DC/DC power system consists of the PSUs (DC/DC) and power subrack (DC/DC).

6.7.2 PSU (DC/DC)The PSU is the power supply unit. The PSU (DC/DC) converts +24 V DC power into -48 V DCpower.

6.7.3 Power Subrack (DC/DC)The power subrack (DC/DC) provides the power input wiring terminals, power output wiringterminals, ALM port, and PRESENT port. The terminals and ports are used for the connectionsof the +24 V input power cables, -48 V output power cables, monitoring signal cable for thePSU, and in-position signal cable for the PSU respectively.

6.7.1 Components of the DC/DC Power SystemThe DC/DC power system consists of the PSUs (DC/DC) and power subrack (DC/DC).

Figure 6-21 shows the DC/DC power system.



6-29

Figure 6-21 DC/DC power system

(1) PSUs (DC/DC) (2) Power subrack (DC/DC)

Table 6-26 describes the components of the DC/DC power system.

Table 6-26 Components of the DC/DC power system

Component Description

PSU (DC/DC) For details, see 6.7.2 PSU (DC/DC).

Power subrack (DC/DC) For details, see 6.7.3 Power Subrack (DC/DC).

6.7.2 PSU (DC/DC)The PSU is the power supply unit. The PSU (DC/DC) converts +24 V DC power into -48 V DCpower.

PanelFigure 6-22 shows the panel of the PSU (DC/DC).




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Figure 6-22 Panel of the PSU (DC/DC)

(1) Power LED (2) Protection LED (3) Fault LED

Functionsl Converts +24 V DC power into -48 V DC power and leads the -48 V DC power into the

DCDU-01.l Monitors the unit and reports alarms related to PSU faults (such as output overvoltage, no

output, and fan faults), alarms related to PSU protection (such as overtemperatureprotection, and input overvoltage/undervoltage protection), and PSU out-of-positionalarms, if any.

LEDsTable 6-27 describes the LEDs on the panel of the PSU (DC/DC).

Table 6-27 LEDs on the panel of the PSU (DC/DC)


Power LED Green ON Normal.

OFF There is no powerinput, or the fuse isdamaged.

Protection LED Yellow OFF Normal.



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ON There is abnormalinput or outputvoltage, the inside ofthe unit isoverheated, the unitis not properlyinserted.

Fault LED Red OFF Normal.

Blinking The fan of the unit isfaulty.

6.7.3 Power Subrack (DC/DC)The power subrack (DC/DC) provides the power input wiring terminals, power output wiringterminals, ALM port, and PRESENT port. The terminals and ports are used for the connectionsof the +24 V input power cables, -48 V output power cables, monitoring signal cable for thePSU, and in-position signal cable for the PSU respectively.

StructureFigure 6-23 shows the power subrack (DC/DC).

Figure 6-23 Power Subrack (DC/DC)

(1) Power input wiringterminals

(2) PRESENT port (3) ALM port (4) Power output wiringterminals

PortsTable 6-28 describes the ports and terminals on the power subrack (DC/DC).




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Table 6-28 Ports and terminals on the power subrack (DC/DC)

Terminal/Port

Label ConnectorType

Description

Power inputwiring terminal

DC INPUT OT terminal The + wiring terminals are used for theconnections of +24 V power cables, andthe - wiring terminals are used for theconnections of +24 V RTN cables.

Power outputwiring terminal

DCOUTPUT

OT terminal The LOAD- wiring terminals are usedfor the connections of the -48 V powercables, and the RTN+ wiring terminalsare used for the connections of the -48 VRTN cables.

Alarm signalport

ALM Cord endterminals

The ALM port is used for the connectionof the monitoring signal cable for thePSU.

Present signalport

PRESENT RJ-45 The PRESENT port is used for theconnection of the in-position signalcable for the PSU.

6.8 AC/DC Power SystemThe AC/DC power system converts 220 V AC power into -48 V DC power.

6.8.1 Components of the AC/DC Power SystemThe AC/DC power system consists of the PMU, PSUs (AC/DC) and power subrack (AC/DC).

6.8.2 PMUThe Power and Environment Monitoring Unit (PMU) performs the power system management,power distribution detection, and alarm reporting functions.

6.8.3 PSU (AC/DC)The PSU is the Power Supply Unit. The PSU (AC/DC) converts 220 V AC power into -48 VDC power.

6.8.4 Power Subrack (AC/DC)The power subrack (AC/DC) provides the power input wiring terminals, wiring terminals forbatteries, and battery power output wiring terminal. The terminals are used for the connectionsof the input power cables, output power cables, and power cable for the batteries respectively.

6.8.1 Components of the AC/DC Power SystemThe AC/DC power system consists of the PMU, PSUs (AC/DC) and power subrack (AC/DC).

Figure 6-24 shows the AC/DC power system.



6-33

Figure 6-24 AC/DC power system

(1) PMU (2) PSUs (AC/DC) (3) Power subrack (AC/DC)

Table 6-29 describes the components of the AC/DC power system.

Table 6-29 Components of the AC/DC power system

Component Description

PMU For details, see 6.8.2 PMU.

PSU (AC/DC) For details, see 6.8.3 PSU (AC/DC).

Power subrack (AC/DC) For details, see 6.8.4 Power Subrack (AC/DC).

6.8.2 PMUThe Power and Environment Monitoring Unit (PMU) performs the power system management,power distribution detection, and alarm reporting functions.

Structure

Figure 6-25 shows the PMU.

Figure 6-25 PMU




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FunctionsThe PMU performs the following functions:

l Communicates with the BBU or upper-level PMU through an RS232/RS422 serial port.

l Manages the power system and battery charge/discharge.

l Detects and reports water damage alarms, smoke alarms, door status alarms, andcustomized Boolean values.

l Reports the ambient temperature, ambient humidity, battery temperature, and customizedanalog values.

l Monitors power distribution, reports related alarms, and reports dry contact alarms.

Ports and LEDsFigure 6-26 shows the front panel of the PMU respectively.

Figure 6-26 Front panel of the PMU

(1) RS232/RS422 ports (2) LEDs (3) Power supply test ports

(4) TEST port (5) Battery control switch (6) COM port

Table 6-30 describes the ports and switch on the PMU.

Table 6-30 Ports and switch on the PMU

Port/Switch Function

RS232/RS422 port Communicating with the BBU or upper-level PMU



6-35

Port/Switch Function

Power supply test port Measuring the power voltage by using a multimeter through the-48V/+24V and 0V ports

TEST port Testing

Battery control switch Controlling the connection of the batteries through the ON and OFFportsl Press and hold the ON port for 5s to 10s to connect the batteries.

l Press and hold the OFF port for 5s to 10s to disconnect from thebatteries.

CAUTION

l You must insert a small round bar into the hole when you operate thebattery control switch. When you hear a crack, the batteries are connectedor disconnected.

COM port Reserved. Connecting to the external signal monitoring board

Table 6-31 describes the LEDs on the panel of the PMU.

Table 6-31 LEDs on the panel of the PMU


RUN Green Blinking (ON for 1s andOFF for 1s)

The unit is functional, and thecommunication with the BBU or upper-levelPMU is normal.

Blinking (ON for0.125s and OFF for0.125s)

The unit is functional, but the communicationwith the BBU or upper-level PMU fails. Ifthe unit does not communicate with the BBUor upper-level PMU for one minute, thecommunication is regarded as failed.

ON or OFF The unit is faulty or the unit is in power-onself-check state.

ALM Red ON The base station reports at least one of thefollowing alarms:l Mains overvoltage or undervoltage alarm

l Busbar overvoltage or undervoltage alarm

l Alarm related to PSUs

l Load disconnection alarm

OFF No alarm is reported.

NOTE

In 3s to 5s after the PMU is powered on, the ALM and RUN LEDs are simultaneously ON for about 3s.




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DIP SwitchThe DIP switch, which is used to choose monitoring address, is positioned on the right panel ofthe PMU. The DIP switch has eight bits, which are set before the PMU is delivered, as shownin Figure 6-27.

Figure 6-27 Right panel of the PMU

6.8.3 PSU (AC/DC)The PSU is the Power Supply Unit. The PSU (AC/DC) converts 220 V AC power into -48 VDC power.

PanelFigure 6-28 shows the panel of the PSU (AC/DC).

Figure 6-28 Panel of the PSU (AC/DC)

(1) Power LED (2) Protection LED (3) Fault LED



6-37

FunctionsThe PSU (AC/DC) performs the following functions:

l Converts 220 V AC power into -48 V DC power and supplies -48 V DC power to theDCDU-01.

l Monitors the unit and reports alarms related to PSU faults (such as output overvoltage, nooutput, and fan faults), alarms related to PSU protection (such as overtemperatureprotection, and input overvoltage/undervoltage protection), and PSU out-of-position alarm,if any.

LEDsTable 6-32 describes the LEDs on the panel of the PSU (AC/DC).

Table 6-32 LEDs on the panel of the PSU (AC/DC)


Power LED Green ON Normal

OFF There are faults (suchas no AC input, orovervoltage andundervoltage of ACinput) on the mains,or the PSU has nooutput.

Protection LED Yellow OFF Normal

ON There is a pre-alarmrelating totemperature or thefan.

Fault LED Red OFF The PSU is normal,or the PSU has nooutput because offaults (such as no ACinput, or overvoltageand undervoltage ofAC input) on themains.




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ON There is no outputbecause of outputovervoltageshutdown, the fanfault,overtemperatureshutdown, remoteshutdown, or aninternal PSU fault.

6.8.4 Power Subrack (AC/DC)The power subrack (AC/DC) provides the power input wiring terminals, wiring terminals forbatteries, and battery power output wiring terminal. The terminals are used for the connectionsof the input power cables, output power cables, and power cable for the batteries respectively.

PanelFigure 6-29 shows the panel of the power subrack (AC/DC).

Figure 6-29 Panel of the power subrack (AC/DC)

(1) Power input wiring terminals (2) Power switch of the batteries

(3) Wiring terminals for batteries (4) Power output wiring terminals

PortsTable 6-33 describes the terminals and switch on the power subrack (AC/DC).



6-39

Table 6-33 Terminals and switch on the power subrack (AC/DC)

Terminal/Switch Description

Power input wiring terminals These terminals are used for the connections ofthe AC input power cables.

Power output wiring terminals The LOAD1(-) and LOAD2(-) wiringterminals are used for the connections of the-48 V power cables, and the RTN(+) wiringterminals are used for the connections of the-48 V RTN cables.

Wiring terminals for batteries The BAT(-) wiring terminal is used for theconnection of negative pole for the batteries,and the BAT(+) wiring terminal is used for theconnection of positive pole for the batteries.

Power switch of the batteries The power switch controls the connection ofthe batteries.




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7 BTS3900 Cables

About This Chapter

This chapter describes the BTS3900 cables. The BTS3900 cables consist of the PGND cable,power cable, transmission cable, CPRI cable, signal cable, and RF cable.

NOTE

The colors of cables vary according to the countries and areas where Huawei products are delivered. Ifcables are purchased at local market, the colors of the cables must comply with the rules and regulations.

7.1 List of BTS3900 CablesThe BTS3900 cables are the PGND cable, power cable, transmission cable, CPRI cable, signalcable, and RF cable.

7.2 PGND CablesThe PGND cables are used to ensure proper grounding of the cabinet and the modules in thecabinet.

7.3 BTS3900 Power CableThe BTS3900 power cables consist of the cables leading power to the BTS3900 cabinet,BBU3900, DCDU-01, Fan Box, RFU, and transmission equipment.

7.4 BTS3900 Transmission CableThis section describes the BTS3900 transmission cable, which consists of the E1 cable, FE/GEcable, FE/GE optical cable.

7.5 BTS3900 CPRI cablesCPRI cables connect RFUs and BBU. Cable connections of CPRI vary according to the differentconfiguration of BTS3900.

7.6 BTS3900 Signal CableThis section describes the BTS3900 signal cable, which consists of the monitoring signal cablefor the PMU, monitoring signal cable for the PSU (DC/DC), in-position signal cable for the PSU(DC/DC), monitoring signal cable for the FAN unit, monitoring signal cable for the EMU, BBUalarm cable, GPS signal cable, and signal cable for the ELU.

7.7 BTS3900 RF CableThe BTS3900 RF cables are the RF jumper and inter-RFU RF signal cable.

BTS3900 LTEHardware Description 7 BTS3900 Cables


7-1

7.1 List of BTS3900 CablesThe BTS3900 cables are the PGND cable, power cable, transmission cable, CPRI cable, signalcable, and RF cable.

Power Cables and PGND CablesTable 7-1 lists the power cables and PGND cables.

Table 7-1 Power Cables and PGND Cables

Item Cable One End The Other End

Connector Installation Position


Cables to beinstalled onsite

7.2 PGNDCables(PGNDcable for thecabinet)

OT terminal The mainPGNDterminalinside thecabinet

OT terminal Externalgroundingbar

7.3.2 PowerInput Cableof theCabinet(-48 V powercable)

OT terminal NEG(-) andRTN(+) ontheDCDU-01

OT terminal Externalpowersupplydevice

7.3.2 PowerInput Cableof theCabinet(+24 Vpower cable)

OT terminal Power inputwiringterminals ofthe powersburack(DC/DC)


7.3.2 PowerInput Cableof theCabinet(AC powercable)

OT terminal Power inputwiringterminals ofthe powersburack(AC/DC)


Cablesinstalledbeforedelivery

7.2 PGNDCables(PGNDcable for themodules)

OT terminal PGNDterminals ofthe modules

OT terminal PGNDterminalsinside thecabinet.

7 BTS3900 CablesBTS3900 LTE



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7.3.6 RFUPowerCable

3V3 powerconnector

PWR port onthe RFU

Parallelterminal

Ports RFU0to RFU5 ontheDCDU-01

7.3.5 FanPowerCable

3V3 powerconnector

-48 V port ofthe fan box

Parallelterminal

FAN port ontheDCDU-01

7.3.4 BBUPowerCable

3V3 powerconnector

PWR port onthe UPEU

Parallelterminal

BBU port ontheDCDU-01

7.3.3DCDU-01PowerCable(Black)

OT terminal RTN(+) porton theDCDU-01

OT terminal RTN(+)wiringterminal forpower outputof the powersubrack(DC/DC)

7.3.3DCDU-01PowerCable(Blue)

OT terminal NEG(-) porton theDCDU-01

OT terminal LOAD(-)wiringterminal forpower outputof the powersubrack(DC/DC)

7.3.3DCDU-01PowerCable(Black)

OT terminal RTN(+) porton theDCDU-01

OT terminal RTN(+)wiringterminal forpower outputof the powersubrack(AC/DC)

7.3.3DCDU-01PowerCable(Blue)

OT terminal NEG(-) porton theDCDU-01

OT terminal LOAD1(-)or LOAD2(-) wiringterminal forpower outputof the powersubrack(AC/DC)

Transmission CablesTable 7-2 lists the transmission cables.



7-3

Table 7-2 Transmission Cables





7.4.2 E1/T1Cable

DB26 maleconnector

E1/T1 porton the UTRP

None Externaltransmissionequipment

7.4.3 FE/GECable

RJ-45 FE/GE0 orFE/GE1 porton the LMPT

RJ-45 Externaltransmissionequipment

7.4.4 FE/GEOpticalCable

LCconnector

SFP0 orSFP1 port onthe LMPT

l FCconnector

l SCconnector

l LCconnector

Externaltransmissionequipment

CPRI CablesTable 7-3 lists the CPRI Cables.

Table 7-3 CPRI Cables





7.5.2 CPRIElectricalCable

SFP20 maleconnector

CPRI portson the LBBP

SFP20 maleconnector

CPRI0 porton the LRFUor MRFU

Signal CablesTable 7-4 lists the signal cables.




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Table 7-4 Signal Cables





7.6.2MonitoringSignalCable forthe PMU

RJ-45connector

Left RS232/RS422 porton PMU

RJ-45connector

MON1 porton the UPEU

7.6.3MonitoringSignalCable forthe PSU(DC/DC)

RJ-45connector

ALM port onthe powersubrack (DC/DC)

Cord endterminal

EXT-ALM0port on theUPEU

7.6.4 In-PositionSignalCable forthe PSU(DC/DC)

RJ-45connector

PRESENTport on thepowersubrack (DC/DC)

RJ-45connector


7.6.5 FanBoxMonitoringSignalCable

RJ-45connector

COM INport on thefan box

RJ-45connector

MON0 porton the UPEU

7.6.9 SignalCable forthe ELU

RJ-45connector

ELU RJ-45connector

SENSOR onthe fan box


7.6.6MonitoringSignalCable forthe EMU

RJ-45connector

RS485 porton the EMU

RJ-45connector

MON1 porton the UPEUor rightRS232/RS422 porton the PMU

7.6.7 BBUAlarmCable

RJ-45connector


RJ-45connector

Externalalarm device

7.6.8 GPSClockSignalCable

SMA maleconnector

GPS port onthe LMPT orUSCU

N-typefemaleconnector

GPS surgeprotector



7-5

RF CablesTable 7-5 lists the RF cables.

Table 7-5 RF Cables





7.7.2 RFJumper

DIN elbowmaleconnector

ANT_TX/RXA orANT_TX/RXB port onthe LRFU

DIN straightmaleconnector

Antennasystem

7.2 PGND CablesThe PGND cables are used to ensure proper grounding of the cabinet and the modules in thecabinet.

PGND Cable for the Cabinet

The PGND cable for the cabinet is green and yellow with the cross-sectional area of 25 mm2.Figure 7-1 shows the PGND cable for the cabinet.

Figure 7-1 PGND cable for the cabinet

(1) OT terminal

PGND Cable for the Modules

The PGND cable for the modules is green and yellow with the cross-sectional area of 6 mm2.Figure 7-2 shows the PGND cable for the modules.

Figure 7-2 PGND cable for the modules

(1) OT terminal




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7.3 BTS3900 Power CableThe BTS3900 power cables consist of the cables leading power to the BTS3900 cabinet,BBU3900, DCDU-01, Fan Box, RFU, and transmission equipment.

7.3.1 Power Cable ConnectionsThis section describes the power cable connections of the BTS3900 cabinet.

7.3.2 Power Input Cable of the CabinetThe power input cable of a cabinet feeds DC or AC power into the cabinet.

7.3.3 DCDU-01 Power CableThrough the DCDU-01 power cable, the DC/DC power system and AC/DC power systemprovide -48 V DC power for the DCDU-01.

7.3.4 BBU Power CableThrough the BBU power cable, the DCDU-01 feeds -48 V DC power into the BBU.

7.3.5 Fan Power CableThrough the fan power cable, the DCDU-01 feeds -48 V DC power into the fan box.

7.3.6 RFU Power CableThrough the RFU power cable, the DCDU-01 feeds -48 V DC power into the RFU.

7.3.1 Power Cable ConnectionsThis section describes the power cable connections of the BTS3900 cabinet.

Power Cable Connections of the BTS3900 (-48 V)Figure 7-3 shows the power cable connections of the BTS3900 (-48 V).



7-7

Figure 7-3 Power cable connections of the BTS3900 (-48 V)

Table 7-6 lists the power cables of the BTS3900 (-48 V).

Table 7-6 Power cables of the BTS3900 (-48 V)

SN Description

P1 to P6 For details, see 7.3.6 RFU Power Cable.

P7 For details, see 7.3.5 Fan Power Cable.

P8 For details, see 7.3.4 BBU Power Cable.

P11, P12 For details, see 7.3.2 Power Input Cable of the Cabinet.

Power Cable Connections of the BTS3900 (+24 V)Figure 7-4 shows the power cable connections of the BTS3900 (+24 V).




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Figure 7-4 Power cable connections of the BTS3900 (+24 V)

Table 7-7 lists the power cables of the BTS3900 (+24 V).

Table 7-7 Power cables of the BTS3900 (+24 V)

SN Description




P11, P12 For details, see 7.3.3 DCDU-01 Power Cable.

P25 to P28 For details, see 7.3.2 Power Input Cable of the Cabinet.

Power Cable Connections of the BTS3900 (220 V)The BTS3900 supports 220 V three-phase AC input, 220 V single-phase AC input, and 110 Vdual-live-wire AC input. The following description takes the 220 V three-phase AC input as anexample.

Figure 7-5 shows the power cable connections of the BTS3900 (220 V).



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Figure 7-5 Power cable connections of the BTS3900 (220 V)

Table 7-8 lists the power cables of the BTS3900 (220 V).

Table 7-8 Power cables of the BTS3900 (220 V)

SN Description




P11, P12 For details, see 7.3.3 DCDU-01 Power Cable.

L, N For details, see 7.3.2 Power Input Cable of the Cabinet.

7.3.2 Power Input Cable of the CabinetThe power input cable of a cabinet feeds DC or AC power into the cabinet.

-48 V Power Cable

The -48 V power cable feeds -48 V power into the cabinet. Figure 7-6 shows the structure ofthe -48 V power cable. Table 7-9 gives a brief description on the -48 V power cable.




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Figure 7-6 Structure of the -48 V power cable

(1) OT terminal

Table 7-9 Description on the -48 V power cable

Cable Type Color Cross-SectionalArea

OT Aperture Type

-48 V power cable Blue 16 mm2 M6

Black

+24 V Power Cable

The +24 V power cable feeds +24 V power into the cabinet. Figure 7-7 shows the structure ofthe +24 V power cable. Table 7-10 gives a brief description on the +24 V power cable.

Figure 7-7 Structure of the +24 V power cable

(1) OT terminal

Table 7-10 Description on the +24 V power cable

Cable Type Color Cross-SectionalArea

OT Aperture Type

+24 V power cable Red 25 mm2 M6

Black



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NOTE

The +24 V power cable consists of two pairs of wires, with each pair containing a red wire and a blackwire.

AC Power Cable

The BTS3900 cabinet supports three types of AC power input, that is, the 220 V AC single-phase, 220 V AC three-phase, and 110 V AC dual-live-wire. The AC power cable feeds ACpower into a cabinet. Figure 7-8 shows the structure of an AC power cable. Table 7-11 gives abrief description on the AC power cable.

Figure 7-8 Structure of an AC power cable (220 V AC, single phase)

(1) OT terminal

NOTE

Different types of 220 V power cable have different structures and consist of different numbers of internalwires. Figure 7-8 shows the 220 V AC single-phase power cable.

Table 7-11 Description on the 220 V power cable

Cable Type Name Cross-SectionalArea

OT Aperture Type

220 V AC three-phase power cable

L1 wire 2.5 mm2 M6

L2 wire

L3 wire

N wire

220 V AC single-phase power cable

L wire 6 mm2

N wire

110 V dual-live-wire power cable

L1 wire 6 mm2

L2 wire

NOTE

The colors and structures of cables delivered by Huawei vary according to countries and areas. If cablesare purchased at local markets, the cables must comply with the local rules and regulations.




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7.3.3 DCDU-01 Power CableThrough the DCDU-01 power cable, the DC/DC power system and AC/DC power systemprovide -48 V DC power for the DCDU-01.

Structure

Figure 7-9 shows the structure of the DCDU-01 power cable.

Figure 7-9 Structure of the power cable

(1) OT terminal

Cable Description

Table 7-12 describes the DCDU-01 power cable.

Table 7-12 DCDU-01 power cable

Power SystemType

Color Cross-Sectional Area OT ApertureType

DC/DC Blue 16 mm2 M6

Black

AC/DC Blue 16 mm2 M6

Black

7.3.4 BBU Power CableThrough the BBU power cable, the DCDU-01 feeds -48 V DC power into the BBU.

Structure

Figure 7-10 shows the structure of the BBU power cable.



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Figure 7-10 Structure of the BBU power cable

(1) 3V3 power connector (2) Parallel terminal

Pin Assignment

Table 7-13 describes the pin assignment of the power cable between the DCDU and the BBU.

Table 7-13 Pin assignment of the power cable between the DCDU and the BBU

Cable X1 End X2 End Cable Color

W1 A3 B1 Black

W2 A1 B2 Blue

7.3.5 Fan Power CableThrough the fan power cable, the DCDU-01 feeds -48 V DC power into the fan box.

Structure

Figure 7-11 shows the structure of the fan power cable.

Figure 7-11 Structure of the FAN power cable





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Pin Assignment

Table 7-14 describes the pin assignment of the fan power cable.

Table 7-14 Pin assignment of the fan power cable


W1 A3 B1 Black

W2 A1 B2 Blue

7.3.6 RFU Power CableThrough the RFU power cable, the DCDU-01 feeds -48 V DC power into the RFU.

Structure

Figure 7-12 shows the structure of the RFU power cable.

Figure 7-12 Structure of the RFU power cable


Pin Assignment

Table 7-15 describes the pin assignment of the RFU power cable.

Table 7-15 Pin assignment of the RFU power cable


W1 A3 B1 Black

W2 A1 B2 Blue



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7.4 BTS3900 Transmission CableThis section describes the BTS3900 transmission cable, which consists of the E1 cable, FE/GEcable, FE/GE optical cable.

7.4.1 Transmission Cable ConnectionsThe BTS3900 supports the transmission over E1 cable, FE/GE electrical cable, or FE/GE opticalcable.

7.4.2 E1/T1 CableThe E1/T1 cable connects the BBU to the external transmission device and transmits basebandsignals.

7.4.3 FE/GE CableThe FE/GE cable connects the BBU to the transmission device through routing devices andtransmits baseband signals.

7.4.4 FE/GE Optical CableThe FE/GE optical cable is used to transmit optical signals between the BBU3900 and thetransmission device. This cable is optional.

7.4.1 Transmission Cable ConnectionsThe BTS3900 supports the transmission over E1 cable, FE/GE electrical cable, or FE/GE opticalcable.

Transmission over E1 Cable

When the E1 cable is used for transmission, the UTRP is required. Figure 7-13 shows the typicaltransmission cable connections.

Figure 7-13 Transmission over E1 cable

Table 7-16 describes the transmission cable connections.

Table 7-16 Transmission over E1 cable

Cable Number Cable Description

S1 7.4.2 E1/T1 Cable




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Transmission over FE/GE Electrical Cable

Figure 7-14 shows the transmission cable connections when the FE/GE electrical cable is used.

Figure 7-14 Transmission over FE/GE electrical cable


Table 7-17 Transmission over FE/GE electrical cable


S1 7.4.3 FE/GE Cable

Transmission over FE/GE Optical Cable

Figure 7-15 shows the transmission cable connections when the FE/GE optical cable is used.

Figure 7-15 Transmission over FE/GE optical cable


Table 7-18 Transmission over FE/GE optical cable


S1 7.4.4 FE/GE Optical Cable

7.4.2 E1/T1 CableThe E1/T1 cable connects the BBU to the external transmission device and transmits basebandsignals.



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ExteriorThe E1/T1 cables are classified into two types: 75-ohm E1 coaxial cable and 120-ohm E1 twistedpair cable.

One end of the E1/T1 cable is a DB26 male connector. The connector at the other end of thecable should be made on site according to site requirements. Figure 7-16 shows an E1/T1 cable.

Figure 7-16 E1/T1 cable

(1) DB26 male connector

Table 7-19 describes the connectors of the 75-ohm E1 coaxial cable.

Table 7-19 Connectors of the 75-ohm E1 coaxial cable

Cable One End The other End

75-ohm E1 coaxial cable DB26 male connector L9 male connector

L9 female connector

SMB female connector

BNC male connector

SMZ male connector

SMZ female connector

Pin AssignmentTable 7-20 and Table 7-21 describe the pin assignment for the wires of the E1/T1 cable.

NOTE

In Table 7-20, "Tip" refers to a wire in the E1 coaxial cable, and "Ring" refers to an external conductor ofthe cable.




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Table 7-20 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-

X1.25 Tip 8 TX4+

X1.26 Ring TX4-

Table 7-21 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+



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Wire Color Wire Type Cable Labels

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-

7.4.3 FE/GE CableThe FE/GE cable connects the BBU to the transmission device through routing devices andtransmits baseband signals.

NOTEThe maximum length of the FE/GE cable for remote connection is 100 m.

Exterior

The FE/GE cable is a shielded straight-through cable. It has an RJ-45 connector at each end, asshown in Figure 7-17.

Figure 7-17 FE/GE cable

(1) RJ-45 connector

Pin Assignment

Table 7-22 describes the pin assignment for the wires of the FE/GE cable.

Table 7-22 Pin assignment for the wires of the FE/GE cable

Pin on the RJ-45Connector

Wire Color Wire Type Pin on the RJ-45 Connector

X1.2 Orange Twisted pair X2.2




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Pin on the RJ-45Connector

Wire Color Wire Type Pin on the RJ-45 Connector

X1.1 White andorange

X2.1

X1.6 Green Twisted pair X2.6

X1.3 White andgreen

X2.3

X1.4 Blue Twisted pair X2.4

X1.5 White and blue X2.5

X1.8 Brown Twisted pair X2.8

X1.7 White andbrown

X2.7

7.4.4 FE/GE Optical CableThe FE/GE optical cable is used to transmit optical signals between the BBU3900 and thetransmission device. This cable is optional.

ExteriorThe FE/GE optical cable has an LC connector at one end and an FC connector, SC connector,or LC connector at the other end, as shown in Figure 7-18, Figure 7-19, and Figure 7-20respectively.

Figure 7-18 FE/GE optical cable (FC and LC connectors)

Figure 7-19 FE/GE optical cable (SC and LC connectors)

Figure 7-20 FE/GE optical cable (LC and LC connectors)



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CAUTIONTo connect the BBU3900 and the transmission device using the FE/GE optical cable, adhere tothe following rules:l The TX port on the BBU3900 is connected to the RX port on the transmission device.

l The RX port on the BBU3900 is connected to the TX port on the transmission device.

7.5 BTS3900 CPRI cablesCPRI cables connect RFUs and BBU. Cable connections of CPRI vary according to the differentconfiguration of BTS3900.

7.5.1 CPRI Cable Connections of the BTS3900The BTS3900 supports four typical configurations: 3 x 10 MHz 2T2R, 3 x 20 MHz 2T2R, 3 x10 MHz 4T4R, and 3 x 20 MHz 4T4R. Different number of LRFUs and LBBPs is required foreach configuration. Therefore, the CPRI cable connections are also different.

7.5.2 CPRI Electrical CableThe CPRI electrical cable enables high speed communication between the BBU3900 and theRFU.

7.5.1 CPRI Cable Connections of the BTS3900The BTS3900 supports four typical configurations: 3 x 10 MHz 2T2R, 3 x 20 MHz 2T2R, 3 x10 MHz 4T4R, and 3 x 20 MHz 4T4R. Different number of LRFUs and LBBPs is required foreach configuration. Therefore, the CPRI cable connections are also different.

3 x 10 MHz 2T2R3 x 10 MHz 2T2R indicates that the BTS3900 supports three sectors, each of which uses 10MHz frequency bandwidth and provides two downlink channels and two uplink channels.

Figure 7-21 shows the CPRI cable connections of a base station configured with MRFUs andLRFUs in the 3 x 10 MHz 2T2R configuration.




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Figure 7-21 CPRI cable connections in the 3 x 10 MHz 2T2R configuration

Table 7-23 shows the CPRI cable connections of 3 x 10 MHz 2T2R.

Table 7-23 CPRI cable connections of 3 x 10 MHz 2T2R

SN Description

P1 to P3 For details, see 7.5.2 CPRI ElectricalCable.

3 x 20 MHz 2T2R3 x 20 MHz 2T2R indicates that the BTS3900 supports three sectors, each of which uses 20MHz frequency bandwidth and provides two downlink channels and two uplink channels.

Figure 7-22 shows the CPRI cable connections of a base station configured with MRFUs andLRFUs in the 3 x 20 MHz 2T2R configuration.



7-23




SN Description


3 x 10 MHz 4T4R3 x 10 MHz 4T4R indicates that the BTS3900 supports three sectors, each of which uses 10MHz frequency bandwidth and provides four downlink channels and four uplink channels.

Figure 7-23 shows the CPRI cable connections of a base station configured with LRFUs in the3 x 10 MHz 4T4R configuration.




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SN Description


3 x 20 MHz 4T4R3 x 20 MHz 4T4R indicates that the BTS3900 supports three sectors, each of which uses 20MHz frequency bandwidth and provides four downlink channels and four uplink channels.

Figure 7-24 shows the CPRI cable connections of a base station configured with LRFUs in the3 x 20 MHz 4T4R configuration.



7-25




SN Description


7.5.2 CPRI Electrical CableThe CPRI electrical cable enables high speed communication between the BBU3900 and theRFU.

Exterior

The CPRI electrical cable is an SFP high speed transmission cable that has an SFP20 maleconnector at each end, as shown in Figure 7-25.

Figure 7-25 CPRI electrical cable




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7.6 BTS3900 Signal CableThis section describes the BTS3900 signal cable, which consists of the monitoring signal cablefor the PMU, monitoring signal cable for the PSU (DC/DC), in-position signal cable for the PSU(DC/DC), monitoring signal cable for the FAN unit, monitoring signal cable for the EMU, BBUalarm cable, GPS signal cable, and signal cable for the ELU.

7.6.1 Signal Cable ConnectionsThis section describes the signal cable connections of the BTS3900.

7.6.2 Monitoring Signal Cable for the PMUThe monitoring signal cable for the PMU transmits the environment alarm information collectedby the PMU to the BBU.

7.6.3 Monitoring Signal Cable for the PSU (DC/DC)The monitoring signal cable for the PSU (DC/DC) is used for the BBU to monitor the powerstatus of the PSUs and receive related alarms.

7.6.4 In-Position Signal Cable for the PSU (DC/DC)The in-position signal cable for the PSU (DC/DC) is used for the BBU to monitor the in-positionstatus of the PSU.

7.6.5 Fan Box Monitoring Signal CableThe fan box monitoring signal cable is used for the BBU to monitor the running status of thefan box.

7.6.6 Monitoring Signal Cable for the EMUThe monitoring signal cable for the EMU transmits monitoring signals from the EMU to theBBU.

7.6.7 BBU Alarm CableThe BBU alarm cable transmits alarm signals from external alarm device to the BBU.

7.6.8 GPS Clock Signal CableThis section describes the GPS clock signal cable. It is an optional cable that transmits GPSclock signals from the GPS antenna system to the BBU. The GPS clock signals serve as theclock reference of the BBU.

7.6.9 Signal Cable for the ELUThe signal cable for the ELU is used to report the cabinet type information detected by the ELUto the fan box.

7.6.1 Signal Cable ConnectionsThis section describes the signal cable connections of the BTS3900.

Signal Cable Connections of the BTS3900 (-48 V DC)Figure 7-26 shows the signal cable connections of the BTS3900 (-48 V DC).



7-27

Figure 7-26 Signal cable connections of the BTS3900 (-48 V DC)

Table 7-27 lists the signal cables of the BTS3900 (-48 V DC).

Table 7-27 Signal cables of the BTS3900 (-48 V DC)

SN Description

S1 For details, see 7.6.5 Fan Box Monitoring Signal Cable

S2 For details, see 7.6.6 Monitoring Signal Cable for the EMU

S3 For details, see 7.6.9 Signal Cable for the ELU

Signal Cable Connections of the BTS3900 (+24 V DC)Figure 7-27 shows the signal cable connections of the BTS3900 (+24 V DC).




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Figure 7-27 Signal cable connections of the BTS3900 (+24 V DC)

Table 7-28 lists the signal cables of the BTS3900 (+24 V DC).

Table 7-28 Signal cables of the BTS3900 (+24 V DC)

SN Description



S3 For details, see 7.6.3 Monitoring Signal Cable for the PSU(DC/DC)

S4 For details, see 7.6.4 In-Position Signal Cable for the PSU(DC/DC)


Signal Cable Connections of the BTS3900 (AC)

Figure 7-28 shows the signal cable connections of the BTS3900 (AC).



7-29

Figure 7-28 Signal cable connections of the BTS3900 (AC)

Table 7-29 lists the signal cables of the BTS3900 (AC).

Table 7-29 Signal cables of the BTS3900 (AC)

SN Description


S2 For details, see 7.6.2 Monitoring Signal Cable for the PMU



7.6.2 Monitoring Signal Cable for the PMUThe monitoring signal cable for the PMU transmits the environment alarm information collectedby the PMU to the BBU.

Structure

Figure 7-29 shows the monitoring signal cable for the PMU.




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Figure 7-29 Monitoring signal cable for the PMU

(1) RJ-45 connector

Pin AssignmentTable 7-30 describes the pin assignment of the monitoring signal cable for the PMU.

Table 7-30 Pin assignment of the monitoring signal cable of the PMU

X1 End X2 End Wire Color Wire Type

X1.1 X2.1 White Twisted pair

X1.2 X2.2 Orange


X1.6 X2.6 Green


X1.4 X2.4 Blue


X1.8 X2.8 Brown

7.6.3 Monitoring Signal Cable for the PSU (DC/DC)The monitoring signal cable for the PSU (DC/DC) is used for the BBU to monitor the powerstatus of the PSUs and receive related alarms.

StructureThe blue and white wires of the monitoring cable is used for monitoring the power status of thePSUs. The other wires are tied to the column of the cabinet. Figure 7-30 shows the monitoringsignal cable for the PSU (DC/DC).



7-31

Figure 7-30 Monitoring signal cable for the PSU (DC/DC)

(1) Monitoring signal cable for the PSU (DC/DC)

7.6.4 In-Position Signal Cable for the PSU (DC/DC)The in-position signal cable for the PSU (DC/DC) is used for the BBU to monitor the in-positionstatus of the PSU.

StructureFigure 7-31 shows the in-position signal cable for the PSU (DC/DC).

Figure 7-31 In-position signal cable for the PSU (DC/DC)

(1) RJ-45 connector

Pin AssignmentTable 7-31 describes the pin assignment of the in-position signal cable for the PSU (DC/DC).

Table 7-31 Pin assignment of the in-position signal cable for the PSU (DC/DC)



X1.2 X2.2 Orange


X1.6 X2.6 Green


X1.4 X2.4 Blue




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X1.8 X2.8 Brown

7.6.5 Fan Box Monitoring Signal CableThe fan box monitoring signal cable is used for the BBU to monitor the running status of thefan box.

Stucture

Figure 7-32 shows the fan box monitoring signal cable.

Figure 7-32 Fan box monitoring signal cable

(1) RJ-45 connector

Pin Assignment

Table 7-32 describes the pin assignment of the fan box monitoring signal cable.

Table 7-32 Pin assignment of the fan box monitoring signal cable

X1 End X2 End Color Type

X1.1 X2.1 White Twisted pair cable

X1.2 X2.2 Orange


X1.6 X2.6 Green


X1.4 X2.4 Blue


X1.8 X2.8 Brown



7-33

7.6.6 Monitoring Signal Cable for the EMUThe monitoring signal cable for the EMU transmits monitoring signals from the EMU to theBBU.

StructureFigure 7-33 shows the monitoring signal cable for the EMU.

Figure 7-33 Monitoring signal cable for the EMU

(1) RJ-45 connector (2) DB9 male connector

Pin AssignmentTable 7-33 describes the pin assignment of the monitoring signal cable for the EMU.

Table 7-33 Pin assignment of the monitoring signal cable for the EMU

Pin on theRJ-45Connector

Pin on the DB9Male Connector

Wire Color Wire Type Label

X1.1 X2.3 White Twisted pair TX+

X1.2 X2.7 Orange TX-

X1.5 X2.6 White Twisted pair RX-

X1.4 X2.2 Blue RX+

7.6.7 BBU Alarm CableThe BBU alarm cable transmits alarm signals from external alarm device to the BBU.

ExteriorThe BBU alarm cable has an RJ-45 connector at each end, as shown in Figure 7-34. However,an RJ-45 connector at one end may be removed, and an appropriate terminal may be addedaccording to the field requirements.




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Figure 7-34 BBU alarm cable

(1) RJ-45 connector

Pin Assignment

Table 7-34 describes the pin assignment for the wires of the BBU alarm cable.

Table 7-34 Pin assignment for the wires of the BBU alarm cable

BBUAlarmPort

Pin on theRJ45Connector at OneEnd

WireColor

WireType

Pin on theRJ45Connector at theOtherEnd

Description

EXT-ALM1


Twistedpair

X2.1 Boolean value input 4+

X1.2 Orange X2.2 Boolean value input 4-(GND)

X1.3 White andgreen

Twistedpair


X1.6 Green X2.6 Boolean value input 5-(GND)

X1.5 White andblue

Twistedpair


X1.4 Blue X2.4 Boolean value input 6-(GND)

X1.7 White andbrown

Twistedpair


X1.8 Brown X2.8 Boolean value input 7-(GND)

EXT-ALM0


Twistedpair


X1.2 Orange X2.2 Boolean value input 0-(GND)



7-35

BBUAlarmPort

Pin on theRJ45Connector at OneEnd

WireColor

WireType

Pin on theRJ45Connector at theOtherEnd

Description

X1.3 White andgreen

Twistedpair


X1.6 Green X2.6 Boolean value input 1-(GND)

X1.5 White andblue

Twistedpair


X1.4 Blue X2.4 Boolean value input 2-(GND)

X1.7 White andbrown

Twistedpair


X1.8 Brown X2.8 Boolean value input 3-(GND)

7.6.8 GPS Clock Signal CableThis section describes the GPS clock signal cable. It is an optional cable that transmits GPSclock signals from the GPS antenna system to the BBU. The GPS clock signals serve as theclock reference of the BBU.

Exterior

The GPS clock signal cable has an SMA male connector at one end and an N-type femaleconnector at the other end, as shown in Figure 7-35.

Figure 7-35 GPS clock signal cable

(1) SMA male connector (2) N-type female connector




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7.6.9 Signal Cable for the ELUThe signal cable for the ELU is used to report the cabinet type information detected by the ELUto the fan box.

StructureFigure 7-36 shows the signal cable for the ELU.

Figure 7-36 Signal cable for the ELU

(1) RJ-45 connector

Pin AssignmentTable 7-35 describes the pin assignment of the signal cable for the ELU.

Table 7-35 Pin assignment of the signal cable for the ELU



X1.2 X2.2 Orange


X1.6 X2.6 Green


X1.4 X2.4 Blue


X1.8 X2.8 Brown

7.7 BTS3900 RF CableThe BTS3900 RF cables are the RF jumper and inter-RFU RF signal cable.

7.7.1 RF Cable Connections of the BTS3900The BTS3900 supports three typical configurations: 3 x 10 MHz 2T2R, 3 x 20 MHz 2T2R, and3 x 10 MHz 4T4R. Different number of LRFUs is required for each configuration. Therefore,the RF cable connections are also different.



7-37

7.7.2 RF JumperThe RF jumper connects the RFU and the feeder of the antenna system for signal exchangebetween the base station and the antenna system.

7.7.1 RF Cable Connections of the BTS3900The BTS3900 supports three typical configurations: 3 x 10 MHz 2T2R, 3 x 20 MHz 2T2R, and3 x 10 MHz 4T4R. Different number of LRFUs is required for each configuration. Therefore,the RF cable connections are also different.

3 x 10 MHz 2T2R and 3 × 20 MHz 2T2R3 x 10 MHz 2T2R indicates that the BTS3900 supports three sectors, each of which uses 10MHz frequency bandwidth and provides two downlink channels and two uplink channels.

3 x 20 MHz 2T2R indicates that the BTS3900 supports three sectors, each of which uses 20MHz frequency bandwidth and provides two downlink channels and two uplink channels.

In the 3 x 10 MHz 2T2R or 3 × 20 MHz 2T2R configuration, three LRFUs are installed in thecabinet. Figure 7-37 shows the RF cable connections.

Figure 7-37 RF cable connections in the 3 x 10 MHz 2T2R or 3 × 20 MHz 2T2R configuration




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NOTE

Each LRFU is connected to an antenna system.

3 x 10 MHz 4T4R

3 x 10 MHz 4T4R indicates that the BTS3900 supports three sectors, each of which uses 10MHz frequency bandwidth and provides four downlink channels and four uplink channels.

In the 3 x 10 MHz 4T4R configuration, six LRFUs are installed in the cabinet. Figure 7-38shows the RF cable connections.

Figure 7-38 RF cable connections in the 3 x 10 MHz 4T4R configuration

NOTE

Each LRFU is connected to an antenna system.



7-39

7.7.2 RF JumperThe RF jumper connects the RFU and the feeder of the antenna system for signal exchangebetween the base station and the antenna system.

ExteriorFigure 7-39 shows an RF jumper.

Figure 7-39 RF jumper

(1) DIN straight male connector (2) DIN elbow male connector

NOTE

Macro base stations use super-flexible 1/2-inch jumpers.




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8 BTS3900 Auxiliary Equipment

About This Chapter

This chapter describes the auxiliary equipment of the BTS3900.

8.1 PS4890 CabinetThe PS4890 cabinet design is based on the design of the BTS3900 cabinet. The PS4890 cabinethouses the AC/DC power system and modules such as the DCDU-04 and DCDU-03. For details,see the PS4890 User Guide.

8.2 EMUEnvironment Monitoring Unit (EMU) is an environmental monitoring device that monitorsenvironmental conditions of the equipment room.

BTS3900 LTEHardware Description 8 BTS3900 Auxiliary Equipment


8-1

8.1 PS4890 CabinetThe PS4890 cabinet design is based on the design of the BTS3900 cabinet. The PS4890 cabinethouses the AC/DC power system and modules such as the DCDU-04 and DCDU-03. For details,see the PS4890 User Guide.

Figure 8-1 shows the cable connections between the BTS3900 and the PS4890.

Figure 8-1 Cable connections between the BTS3900 and the PS4890

Table 8-1 lists the cables connected between the BTS3900 and the PS4890.

Table 8-1 Cables connected between the BTS3900 and the PS4890

SN Cable

P1, P2 For details, see Output Power Cable for theDCDU-04

S1 For details, see 7.6.2 Monitoring Signal Cable forthe PMU

8.2 EMUEnvironment Monitoring Unit (EMU) is an environmental monitoring device that monitorsenvironmental conditions of the equipment room.

EMU connects to main equipment and performs monitoring functions through the alarm cables.The EMU performs the following functions:

8 BTS3900 Auxiliary EquipmentBTS3900 LTE



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l Provides monitoring ports for the temperature, humidity, water, infrared, and door controlsensors. Additionally, it provides monitoring ports for Boolean value, analog, and outputcontrol.

l Provides two kinds of communication ports, RS485 and RS232, for communication withthe BTS.

For details on the structure of the EMU, see HUAWEI QCKG1EMU User Guide.

BTS3900 LTEHardware Description 8 BTS3900 Auxiliary Equipment


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BTS3900 LTE Hardware Description(V100R002C00_02)

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