Compact OutDoor BS21 BTS HW Manual

5/26/2018 Compact OutDoor BS21 BTS HW Manual

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ZXG10BS21Compact Outdoor BTS for GSM

HardwareManual

Version 2.2

ZTE CORPORATIONZTE Plaza, Keji Road South,Hi-Tech Industrial Park,Nanshan District, Shenzhen,P. R. China

518057Tel: (86) 755 26771900 800-9830-9830Fax: (86) 755 26772236URL: http://support.zte.com.cnE-mail: [email protected]


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LEGAL INFORMATION

Copyright 2005 ZTE CORPORATION.

The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of

this document or any portion of this document, in any form by any means, without the prior written consent of ZTECORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentialityobligations.

All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTECORPORATION or of their respective owners.

This document is provided as is, and all express, implied, or statutory warranties, representations or conditions are

disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance onthe information contained herein.

ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the

subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and itslicensee, the user of this document shall not acquire any license to the subject matter herein.

The contents of this document and all policies of ZTE CORPORATION, including without limitation policies related to supportor training are subject to change without notice.

Revision History

Date Revision No. Serial No. Description

10/14/2005 R1.1 sjzl20051440 First edition

05/10/2007 R1.2 sjzl20051440 Updated


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ZTE CORPORATIONValues Your Comments & Suggestions!

Your opinion is of great value and will help us improve the quality of our productdocumentation and offer better services to our customers.

Please fax to: (86) 755-26772236; or mail to Publications R&D Department, ZTECORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park,Shenzhen, P. R. China 518057.

Thank you for your cooperation!

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ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Hardware Manual

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Contents

About this Hardware Manual....................................................................ix

Purpose of this Hardware Manual.............................................................................x

Typographical Conventions.....................................................................................xi

Mouse Operation Conventions................................................................................. xi

Safety Signs..........................................................................................................xii

How to Get in Touch .............................................................................................xiii

Customer Support.................................................................................................................xiii

Documentation Support.........................................................................................................xiii

Chapter 1........................................................................................1

Cabinet........................................................................................................1

Cabinet Components...............................................................................................1

Carrier Shelf............................................................................................................................3

Ventilation Duct.......................................................................................................................4

Transmission Plug-in Box.........................................................................................................5

Power Supply Plug-in Box........................................................................................................5

Bottom Plate...........................................................................................................................6

Heat Exchanger.......................................................................................................................6

Communication Relationships..................................................................................6

Component Functions .............................................................................................7

Carrier Shelf............................................................................................................................7

Ventilation Duct.......................................................................................................................7

Transmission Plug-in Box.........................................................................................................7

Power Supply Plug-in Box........................................................................................................7Heat Exchanger.......................................................................................................................8

Indices.................................................................................................................10

Cabinet Physical Characteristics..............................................................................................10

Operating Environment..........................................................................................................10

Power Supply Requirements ..................................................................................................11

Power Consumption ..............................................................................................................11

System Capacity ...................................................................................................................11

Chapter 2......................................................................................13

Shelf......................................................................................................... 13


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Overview.............................................................................................................13

Carrier Shelf.........................................................................................................13

Configuration ........................................................................................................................13

Functions and Working Principles ...........................................................................................14

Backplane and Interfaces.......................................................................................................15

Backplane DIP Switches and Jumpers ....................................................................................16

Chapter 3......................................................................................19

Module ..................................................................................................... 19

Overview.............................................................................................................19

Outline Structure..................................................................................................20

Controller and Maintenance Module (CMM) .............................................................23

Overview ..............................................................................................................................23


Characteristics.......................................................................................................................26

CMM External Interfaces........................................................................................................30

Transceiver Module for EDGE (ETRM) .....................................................................30

Overview ..............................................................................................................................30


ETRM Characteristics .............................................................................................................34

Antenna Equipment Module (AEM).........................................................................38

Overview ..............................................................................................................................38

AEM Classification..................................................................................................................38ECDU....................................................................................................................................38

Board ...................................................................................................................................47

Power Module.......................................................................................................48

PSM......................................................................................................................................48

DPS......................................................................................................................................50

BTM ....................................................................................................................52

Chapter 4......................................................................................53

Antenna Feeder System.......................................................................... 53

Working Principle and Structure of Antenna Feeder System......................................53

Antenna...............................................................................................................55

Functions..............................................................................................................................55

Antenna Installation ..............................................................................................................55

Precautions...........................................................................................................................55

Feeder.................................................................................................................56

Functions..............................................................................................................................56

Feeder Installation.................................................................................................................56

Precautions...........................................................................................................................56

Tower Mounted Amplifier.......................................................................................57


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Functions..............................................................................................................................57

TMA Installation ....................................................................................................................57

Precautions...........................................................................................................................57

Lightning Arrester.................................................................................................58

Functions..............................................................................................................................58

Lightning Arrester Installation ................................................................................................59

Precautions...........................................................................................................................59

Chapter 5......................................................................................61

Bottom Plate............................................................................................ 61

Interface Overview ...............................................................................................61

Interface Descriptions...........................................................................................63

Interface between Primary Power and BS Device ....................................................................63

E1 Interface..........................................................................................................................64Optical Fiber Interface ...........................................................................................................67

Microwave Relay Interface.....................................................................................................67

External Environment Monitoring Interface RELAY_ALM..........................................................68

Inter-rack Synchronization Signal Interface SYNC ...................................................................69

Tower Mounted Amplifier (TMA) Interface PWRTA...................................................................69

Antenna Feeder interface.......................................................................................................70

Grounding Interface PE..........................................................................................................71

UPS Interface........................................................................................................................71

Appendix A ...................................................................................73

AEM Configurations in Various Sites ...................................................... 73

Abbreviations ...............................................................................75

Figures..........................................................................................77

Tables ...........................................................................................79


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Confidential and Proprietary Information of ZTE CORPORATION ix

About this Hardware Manual

The ZXG10 is a GSM mobile communication system independentlydeveloped by ZTE Corporation. It consists of ZXG10-MSS Mobile SwitchingSubsystem and ZXG10-BSS Base Station Subsystem. ZXG10-BSScomprises of ZXG10-BSC Base Station Controller and ZXG10-BTS BaseStation Transceiver, to provide and manage radio transmission in GSM.

ZXG10 BS21 (V2.2) GSM Compact Outdoor Integrated Base Station

features large capacity, compact size, high reliability, high performance-price ratio, perfect functions, and enhanced service supporting capability.

ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Hardware Manualintroduces including overall structure, cabinet and shelf structure as wellas the functions and indices of various modules.

Complete set of manuals:

ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Guide toDocumentation

ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Technical Manual


ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Installation Manual

ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Maintenance Manual


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x Confidential and Proprietary Information of ZTE CORPORATION

Purpose of this Hardware ManualChapter 1, Cabinet, introduces components, assembly drawings, andwiring diagrams of ZXG10 BS21 (V2.2) cabinet. It describes functions ofand communication relations between shelves, and presents technicalindices.

Chapter 2, Shelf, introduces structure of top shelf and carrier shelf, andbackplane and its communication relation with the carrier shelf.

Chapter 3, Module, introduces configuration, principle diagrams, backplane,interfaces, jumpers, indicators and panels of each module of the base

station.

Chapter 4, Antenna Feeder System, introduces components, functions and

installation precautions of the antenna feeder system.

Chapter 5, Bottom Plate, introduces important internal and externalinterfaces as well as signal definitions and description of each interface.

Appendix A, AEM Configurations in Various Sites, introduces configurationsof AEM module in different types of stations.


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Confidential and Proprietary Information of ZTE CORPORATION xi

Typographical ConventionsZTE documents employ with the following typographical conventions.

TA B L E 1 T Y P O G R A P H I C A L CO NVENT I O NS

Mouse Operation Conventions

TA B L E 2 M O USE O P E R A T I O N CO NVENT I O NS

Typeface Meaning

Italics References to other guides and documents.

Quotes Links on screens.

Bold Menus, menu options, function names, input fields, radiobutton names, check boxes, drop-down lists, dialog boxnames, window names.

CAPS Keys on the keyboard and buttons on screens and company

name.Cons t ant wi d t h Text that you type, program code, files and directory names,

and function names.

[ ] Optional parameters

{ } Mandatory parameters| Select one of the parameters that are delimited by it

Note: Provides additional information about a certain topic.

Checkpoint: Indicates that a particular step needs to be

checked before proceeding further.

Tip: Indicates a suggestion or hint to make things easier ormore productive for the reader.

Typeface Meaning

Click Refers to clicking the primary mouse button (usually the leftmouse button) once.

Double-click Refers to quickly clicking the primary mouse button (usuallythe left mouse button) twice.

Right-click Refers to clicking the secondary mouse button (usually theright mouse button) once.

Drag Refers to pressing and holding a mouse button and moving themouse.


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xii Confidential and Proprietary Information of ZTE CORPORATION

Safety Signs

TA B L E 3 SA F ET Y S I G NS

Safety Signs Meaning

Danger: Indicates an imminently hazardous situation, which ifnot avoided, will result in death or serious injury. This signalword should be limited to only extreme situations.

Warning: Indicates a potentially hazardous situation, which ifnot avoided, could result in death or serious injury.

Caution: Indicates a potentially hazardous situation, which if notavoided, could result in minor or moderate injury. It may alsobe used to alert against unsafe practices.

Erosion: Beware of erosion.

Electric shock: There is a risk of electric shock.

Electrostatic: The device may be sensitive to static electricity.

Microwave: Beware of strong electromagnetic field.

Laser: Beware of strong laser beam.

No flammables: No flammables can be stored.

No touching: Do not touch.

No smoking: Smoking is forbidden.


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Confidential and Proprietary Information of ZTE CORPORATION xiii

How to Get in TouchThe following sections provide information on how to obtain support forthe documentation and the software.

Customer SupportIf you have problems, questions, comments, or suggestions regardingyour product, contact us by e-mail at [email protected]. You can alsocall our customer support center at (86) 755 26771900 and (86) 800-9830-9830.

Documentation SupportZTE welcomes your comments and suggestions on the quality and

usefulness of this document. For further questions, comments, orsuggestions on the documentation, you can contact us by e-mail [email protected]; or you can fax your comments and suggestions to (86)755 26772236. You can also explore our website athttp://support.zte.com.cn, which contains various interesting subjects like

documentation, knowledge base, forum and service request.


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xiv Confidential and Proprietary Information of ZTE CORPORATION



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Confidential and Proprietary Information of ZTE CORPORATION 1

C h a p t e r 1

Cabinet

In this chapter, you will learn about:

Cabinet Components

Communication Relationships

Component Functions

Indices

Cabinet ComponentsZXG10 BS21 (V2.2) is an outdoor electronic device suitable for simple and

adverse outdoor working environment. It provides protection againstelectromagnetic waves and shielding against all weather conditions.

Figure 1 shows ZXG10 BS21 (V2.2) integrated equipment.

F I G URE 1 ZXG10 B S 2 1 (V2.2) I NT EG RAT ED E Q UI PM ENT


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2 Confidential and Proprietary Information of ZTE CORPORATION

The outer surface of BS21 cabinet is in light gray. Front and rear doors ofthe cabinet can be opened to facilitate installation and maintenance. Thereinstall a heat exchanger and a ventilation system at the top of the cabinet.Cabling system is arranged at the cabinet bottom.

Figure 2 shows overall structure layout of ZXG10 BS21 (V2.2).

There is the carrier shelf, ventilation duct (with built-in fiber splice tray),dummy panel (depending on the configuration), transmission plug-in box,

and power supply plug-in box inside the cabinet, from top to bottom.

A base is installed at the cabinet bottom.

F I G URE 2 ST RUCT URE LA YO UT O F INT EG RAT ED E Q UI PM ENT

CMMETRMGETRMG ECDUGECDUG

1

2

3

4

5

1. Carrier shelf 2. Ventilation duct 3. Transmission plug-in box

4. Dummy panel (depending on the configuration) 5. Power supply plug-in box

Figure 3 shows ZXG10 BS21 (V2.2) assembly diagram.


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Chapter 1 - Cabinet


F I G URE 3 ZXG10 B S 2 1 (V2.2) CA B I NET A S S E M B L Y D I A G R A M

1

2

3

4

5

6

7

8

9 1. Cover 2. Heat exchanger 3. Cabinet main body

4. Rear door 5. Carrier shelf 6. Transmission plug-in box

7. Dummy panel 8. Power supply plug-in box 9. Front door

Carrier ShelfFigure 4 shows mechanical structure of the carrier shelf.


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F I G URE 4 M E C H A N I C A L ST RUCT URE O F CA R RI ER SH E L F

External dimensions of the carrier shelf are 19-inch standard shelf and 7 Uin height.

The carrier shelf uses M4 sunk screws to connect side panels and sections

to form a frame. The panel installation bars and guide rail fixing bars areinstalled inside the front and rear sections for modules and guide rails.

The carrier shelf connects the column through side log at the front during

the installation. Use M4 combination screws to fix the carrier shelf to theguide rails of the cabinet, for the carrier shelf bears heavy load.

Ventilation DuctFigure 5 shows structure of the ventilation duct.

F I G URE 5 VE N T I L A T I O N DU CT


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Chapter 1 - Cabinet


There is an upward slanting air deflector inside the duct, under which afiber splice tray is installed to make full use of the space inside the cabinet.

Transmission Plug-in BoxThe transmission plug-in box is a 19-inch standard shelf and 3 U in height.It is used for built-in transmission equipment, including opticaltransmission and microwave.

Power Supply Plug-in BoxZXG10 BS21(V2.2) supports two types of power supply plug-in box:

220 V AC power supply plug-in box

-48 V DC power supply plug-in box

The power supply plug-in box is a 19-inch shelf and 2 U in height. Thefilter and lightning protection system are installed at the bottom of theplug-in box, about 100 mm high.

The 220 V AC power supply plug-in box is shown in Figure 6.

F I G URE 6 220 V A C PO WER SU P P L Y P L UG - I N B O X

The -48 V DC power supply plug-in box is shown in Figure 7.

F I G URE 7 -48 V DC PO WER SU P P L Y PL UG - I N B O X


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Bottom Plate

External interfaces of the cabinet are all at bottom plate. Refer to Chapter5 Bottom Platefor details.

Heat ExchangerA heat exchanger is installed to dissipate the heat inside the cabinet in a

centralized way, and to ensure that the temperature inside the cabinetremains within required range.

Communication RelationshipsZXG10 BS21 (V2.2) mainly consists of carrier shelf, power supply plug-inbox, heat exchanger, and transmission plug-in box. The communicationrelationships among them are shown in Figure 8.

F I G URE 8 C O M M UNI CAT I O N R E L A T I O N S H I P SCHEM AT I C D I A G R A M

T

M

M

AbisB

S

C

Um

ZXG10

BS21

Carriershelf

Alarm

signal

E1

Powersupply

plug-inbox

Heat

exchanger

Alarm

signal

The carrier shelf collects alarm signals from the power supply plug-in boxand heat exchanger through X14 on the backplane MMTRM of the carriershelf. X14 is the interface between the base station and externalenvironmental monitoring equipment.


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Chapter 1 - Cabinet


Component Functions

Carrier ShelfThe carrier shelf can be configured with two AEMs, two ETRMs, one CMM,and one dummy panel.

AEM is the antenna feeder module and performs the following functions:

Downlink RF signal combination and filtering, uplink RF signalamplification and dividing;

Providing power and alarm interfaces for the tower amplifier.

CMM module is the main control unit and performs the following functions:

Base station interface function;

Providing various clocks;

Base station remote operation and maintenance;

Base station local operation and maintenance, and device alarmcollection.

ETRM is the carrier module and performs the following functions:

Controlling and processing radio channels;

Sending and receiving radio channel data;

Modulating/demodulating baseband signals on the radio carrier; Sending and receiving radio carriers;

Collecting fan and AEM alarms.

Ventilation DuctThere installs a special air duct between the carrier and transmission plug-in box to ensure proper ventilation.

Transmission Plug-in BoxThe transmission plug-in box is a 19-inch standard plug-in box and 3 U in

height. It is used for built-in transmission equipment, including opticaltransmission and microwave. TMM module is the core of the transmissionplug-in box.

Power Supply Plug-in BoxZXG10 BS21 (V2.2) supports two types of power supply plug-in box.


The Power Supply Module (PSM) is the core of 220 V AC power supply

plug-in box. It performs the following functions:


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Providing rectification, filtering, and voltage stabilization protectionfor 220 VAC (single-phase three-line) power.

Providing 220 V AC power for the heater installed in the heatexchanger.

Providing 48 V DC power for the cyclical fan inside the heatexchanger.

Providing 48 V DC output power for the carrier shelf.

Providing AC input protection (over-voltage/under-voltageprotection), DC output protection (over-voltage/under-voltage

protection), lightning/surge protection, burst interferenceresistance, cycle drop prevention, conduction interferenceresistance, and anti-electromagnetic radiation functions.

Providing continuous power supply through external UPS. UPSprovides power supply to PSM and it distributes power to the

carrier shelf and heat exchanger. If no UPS is configured, the mainssupply provides power.


The Direct current Power Supply (DPS) module is the core of -48 V DCpower supply plug-in box. It implements -48 V DC filtering and surgeprotection. The heat exchanger doe not work if the DC power supply isconfigured.

Heat ExchangerThe heat-processing unit consists of a heat exchanger and ventilation duct.

The heat exchanger maintains the required temperatures inside thecabinet.

The transmission plug-in box and power supply plug-in box are bothequipped with fans. The heat flows to the front of the cabinet through fans,converges with the hot air from the carrier shelf, and dissipates out of thecabinet through the heat exchanger.

Figure 9 shows the air intake and outtake.


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Chapter 1 - Cabinet


F I G URE 9 A I R IN T A K E A N D O U T T A K E O F CA B I NET

The heat exchanger provides heat dissipation upon high temperatures andheating function upon low temperatures. Its major technical indices are:

Internal recycling air pressure: 60 Pa

Two power supplies: 220 V AC and -48 V DC

Input power (for full load): 160 W (not including that of the heater)

Heating power: 1600 W

Cooling power: 70 W/K

Temperature of working environment: -45 C ~ +50 C

Storage temperature: -55 C ~ +70 C

Earthquake-proof index: 5-200-5 Hz/1.5g

Noise when internal and external recycles work at the same time:

65 dB (A)


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Indices

Cabinet Physical Characteristics1. External dimensions (height width depth) of main body of thecabinet: 800 mm 650 mm 750 mm

External dimensions (height width depth) of integrated equipment(including top cover and base): 1330 mm 650 mm 750 mm

Height to install the base: 150 mm

External dimensions (height width depth) of the heat exchanger:350 mm 510 mm 750 mm

2. Cabinet weight

Weight of integrated equipment in full configuration: 155 kg. Table 4shows weight of each component.

TA B L E 4 W EI G HT O F EA C H C O M PO NENT O F I NT EG RAT ED EQ UI PM ENT I N F UL LCO NF I G URAT I O N

Name Weight (kg)

Total 155

Main Body 70

Carrier Shelf 9

ETRM 52

CMM 12

AEM 72

Transmission Unit 5

Power 15

Heat Exchanger 30

Operating Environment

1. Working environment

Temperature: -40 C ~ 50 C

Rate at which the temperature changes: 0.5 C/min

Relative humidity: 5% ~ 100%

Maximum wind speed: 50 m/s

Protection: the capability to withstand harsh weather conditions, the IP

protection level is IP55.

2. Storage environment

Pack and store indoors.


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Chapter 1 - Cabinet


Storage temperature: -45 C ~ 70 C

Relative humidity: 10% ~ 90%, without condensed water

3. Mechanical vibration resistance

The mechanical strength must comply with 300019-1-4 ClassM3requirements of the ETSI.

4. Grounding resistance

The cabinet shell must have perfect grounding performance, withgrounding resistance less than 5 ohm.

Power Supply RequirementsZXG10 BS21 supports two types of power supply plug-in box.


Input voltage: single-phase three-line, 130 V AC ~ 300 V AC

Input frequency: 45 Hz ~ 65 Hz

Output voltage: -48 V DC (-60 V DC ~ -40 V DC)

Maximum output current: 16 A

Current limit adjustable: 16 A adjustable

Maximum output power: 800 W

Sensitivity of load current: 3%


Input power: -48 V DC

Power ConsumptionMaximum power consumption of individual module:

ETRM: 2180 W/module

CMM: 15 W

AEM: 25 W/module

Heat exchanger: 140 W

Power supply plug-in box: 50 W

Transmission plug-in box: 50 W

Maximum power consumption (in full configuration): about 625 W.

System CapacityConfigure the ZXG10 BS21 according to users requirements and network

planning.


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A single ZXG10 BS21 rack can be configured with at most two 60 Wcarriers.

For a site with more than two carriers, multiple racks should be configured,of which one is the master rack and others are slave racks. One masterrack can be configured with two slave racks at most.

Typical site configurations include omni-directional site, 2-sector site, and3-sector site. Configure at most two slave racks and six TRXs in typical

configuration of a single master rack.


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C h a p t e r 2

Shelf


Overview

Carrier Shelf

OverviewThe shelf functions as combining all boards inserted in the shelf to form an

independent functional unit.

ZXG10 BS21 (V2.2) services are mainly implemented by the carrier shelf.Only the carrier shelf in the cabinet has adopted the backplane. BackboardTransmission Module (BTM) consists of one MMTRM. It implements theinformation transmission between CMM, ETRM, and AEM and providesinterfaces for the input and output of external signals.

Carrier Shelf

ConfigurationFigure 10 shows configuration and position of the carrier shelf in ZXG10BS21 cabinet.


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F I G URE 10 CA B I N ET C O NF I G URAT I O N S CHEM AT I C D I A G R A M

E E

Transmissionplug-inbox

Powersupplyplug-inbox

Functions and Working PrinciplesFunctions of each module:

1. Controller & Maintenance Module (CMM)

CMM implements functions such as Abis interface processing, BSoperation and maintenance, clock synchronization and generation, andinternal/external alarm collection and processing.

2. Transceiver Module for EDGE (ETRM)

In GSM system, ETRM implements functions such as control andprocessing of radio channels, sending and receiving radio channel data,modulating and demodulating baseband signals on the radio carrier,sending and receiving of radio carriers, and collecting fan and AEMalarms.

3. Antenna Equipment Module (AEM)

AEM implements functions such as providing bi-directional channel

from BTS to antenna for transmitting frequency band signals and fromantenna to BTS for receiving frequency band signals, generatingalarms when antenna port SWR deteriorates, suppressing interference,and diversity reception.

4. Backboard Transmission Module (BTM)

BTM consists of one MMTRM. It implements information transmissionbetween CMM/ETRM and AEM and provides interfaces for input andoutput of external signals.


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Chapter 2 - Shelf


Backplane and InterfacesThe carrier shelf has a backplane: MMTRM.

MMTRM can bear one CMM, two ETRMs, and two AEMs. It implementstransmission of information between CMM and ETRM, connection betweeninternal and external interfaces as well as information transmission withPSM. It transmits clock and downlink data signals to ETRM and receivesdata signals from ETRM. It provides E1, collects site ID, monitors externalenvironment and transmits signals such as clock signals (including testclock). In addition, it also receives primary power supply distributed byPSM.

Interfaces connecting CMM with the backplane include data/clock interface

between CMM and ETRM modules, Abis interface, data/clock interfacebetween cabinets in the same site, external environment monitoring

interface, site ID collection interface and power supply interface. Adopt E1interfaces for Abis interface and data/clock interface between cabinets inthe same site.

Figure 11 shows layout of MMTRM.

F I G URE 11 MMTRM LA YO U T

X11: 11-core primary power socket connected with 48 V powerdistribution line from PSM.

X2~X4: Sockets bearing CMM. X2 and X3 are 2 mm high-density B-type5*25 pin sockets; X4 is 2 mm high-density A-type 5*22 pin socket with aguide slot.

X11: CMM 3-core primary power socket coming from X1

X9: MCX coaxial cable connector to output 13 M test clock


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X10: MCX coaxial cable connector to output FCLK test clock

X12: D-type 25-core straight connector, to transmit the four pairs of

synchronous clock (ABIS_SYNCLK_IN, ABIS_SYNCLK0, ABIS_SYNCLK1,ABIS_SYNCLK2) between the cabinets in same BTS site

X13: D-type 25-core straight connector, to transmit the three pairs of E1

signals (A_IN and A_OUT, D_IN and D_OUT, E_IN and E_OUT)

between BSC and BTS and between the cabinets in the same site

X14: D-type 25-core straight PCB soldered socket, to serve as an interfacebetween BTS and device and to monitor external environment. CMM drycontact includes nine pairs of differential input ALM_IN, one pair of

differential output ALM_OUTand one RS-232 interface

X21 and X27: 2 mm high-density A-type 522 pin sockets with guide slots

for bearing AEM

X20 and X26: 3-core primary power sockets of AEM

X23 and X25: 2 mm high-density A-type 522 pin sockets with guide slotsfor AEM

X22, X24: 3-core primary power sockets of ETRM module, all from X1

X5: D-type 9-core straight connector, to supply power from ETRM toTower-Mounted Amplifier (TMA)

S1, S2: Dip switches, to set cabinet ID. Please refer to Section Backplane

DIP Switches and Jumpers for ID setting.

Backplane DIP Switches and JumpersThere are two DIP switches S1 and S2 on MMTRM backplane of BS21

(V2.2) cabinet, to set cabinet ID.

CMM reads cabinet ID after power-on and initialization to determine

cabinet level (master/slave), SDH network synchronization clock port andO&M timeslot position.

ID read by CMM is 0 when DIP switch is set to ON; otherwise, it is 1.

Note

0: ON; 1: OFF, for DIP switches S1 and S2

Bit 1 ~ 8 of S1 represent bit 0 ~ 7 of the ID respectively, while bit 1 ~ 8 of S2represent bit 8 ~ 15 of the ID respectively.

ID is a 16-bit serial number, as shown in Figure 12.


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Chapter 2 - Shelf


F I G URE 12 DIP S WI T CH O F T HE BA CK P L A NE

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

INDOOR SYN CHANEL_NO BTS_NO SLAVE1_PORT SLAVE2_PORT SATE ABIS_PORT ABIS_TS

INDOOR: BTS type

Setting: 0-indoor and 1-outdoor

SYN: It synchronizes reference clock for network synchronization (0: clock

extracted from E1 interface; 1: SDH synchronization clock) when INDOOR= 0. It indicates the type of outdoor site (0: BS21 site) when INDOOR = 1

CHANEL_NO: It selects the port for onsite monitoring device whenINDOOR = 0. It indicates the type of outdoor site (00: BS21 site) whenINDOOR = 1

BTS_NO: Rack number in same site (00: Master rack; 01: Slave rack 1;10: Slave rack 2)

SLAVE_PORT: E1 port of master rack that connects slave rack 1 (in BS21,01: D port of the master rack; 10: E port of the master rack)

SLAVE2_PORT: E1 port of master rack that connects slave rack 2 (in BS21,01: D port of the master rack; 10: E port of the master rack, for BS21)

SATE: Whether to use satellite Abis links (0: Ordinary Abis link; 1:Satellite Abis link)

ABIS_PORT: O&M port number (in BS21, 00: A port; 11: D port)

ABIS_TS: O&M LAPD timeslot on Abis interface (000: Ts16; 001: Ts31;010: Ts30; 011: Ts29; 100: Ts28; 101: Ts27; 110: Ts26; 111: Ts25)

When there is a lower-level site, E1 port of the master rack used toconnect lower-level site cannot have same value as that of SLAVE_PORT1

and SLAVE_PORT2. For example, neither SLAVE_PORT1 nor SLAVE_PORT2can be set to 01 if D port of the master rack connects lower-level site.

Note: DIP switch S1 and S2 are on the front of backplane, on which boards are

inserted. Before setting DIP, pull out CMM board and dummy board first, as shownin Figure 10.


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C h a p t e r 3

Module


Overview

Outline Structure

Controller and Maintenance Module (CMM)

Transceiver Module for EDGE (ETRM)

Antenna Equipment Module (AEM)

Power Module

BTM

OverviewThe hardware of ZXG10 BS21 (V2.2) consists of CMM, ETRM, AEM, PSM,

DPS, and BTM. Figure 13 shows locations of major modules in BS21 (V2.2)cabinet.


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F I G URE 13 L O CAT I O NS O F MO DUL ES I N T HE CA B I NET

Dummypan

el

Outline StructureThere are five major modules in the front of ZXG10 BS21 (V2.2) cabinet:

CMM, ETRM, AEM, PSM, and DPS.

Figure 14 shows outline structure of CMM.


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Chapter 3 - Module


F I G URE 14 OU T L I N E ST RUCT URE O F CMM

Figure 15 shows outline structure of ETRM.

F I G URE 15 OU T L I N E ST RUCT URE O F ETRM

Figure 16 shows outline structure of AEM (here, ECDU is taken forexample).


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F I G URE 16 OU T L I N E ST RUCT URE O F ECDU

Figure 17 shows outline structure of PSM.

F I G URE 17 OU T L I N E ST RUCT URE O F PSM

Figure 18 shows outline structure of DPS.


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Chapter 3 - Module


F I G URE 18 OU T L I N E ST RUCT URE O F DPS

Controller and MaintenanceModule (CMM)

OverviewCMM implements functions such as Abis interface processing, BS operation

& maintenance, clock synchronization and generation, andinternal/external alarm collection and processing.

Functions and Working PrinciplesMajor functions of CMM:

1. BS interface functions

i. Extracting synchronous clock signals from E1 link as reference clockof BTS, and implements synchronization between BTS and BSC.

ii. Providing transparent channel for service data transmission

between ETRM and BSC.

iii. Supporting compression transmission of LAPD signaling. Ittransmits LAPD signaling transparently in downlink direction. It

compresses several pieces of ETRM signaling in one timeslot for

transmission in uplink direction. The receiving end identifiessignaling according to TEI.

iv. Supporting multiple networking modes of Abis interface, such asstar, chain and tree modes, and providing function for multipleBTSs to share PCM link.

v. Supporting cascading between multiple physical cabinets in samesite.

2. BS clocks

i. Providing various clocks needed by BS.

ii. Implementing network synchronization of the clock when

configured in synchronous mode.


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iii. Generating and implementing ETRM frame number synchronizationin same cabinet.

iv. Synchronizing frame numbers between different cabinets in samesite.

3. Remote operation & maintenance functions of BTS

BSC performs remote operation & maintenance on BTS via CMM.

i. BTS status management includes blocking the site, cell, FU, CU, CH.

ii. BTS configuration management includes software downloading,channel configuration and functional parameter setting.

iii. BTS equipment management includes BTS hardware information,software information and functional module composition.

iv. BTS monitoring management includes monitoring runningconditions of each unit, and collecting and reporting the alarm

information.v. BTS test management tests board functionality and loop back test

for radio channels.

vi. Remotely resets CMM and ETRM.

vii.Database Management.

4. Local operation & maintenance functions of BTS

Local Manager Terminal (LMT) performs local operation & maintenanceon BTS via CMM.

i. Clock calibration function.

ii. Checking program variables.

iii. Local setting of fixed parameters.

iv. Local downloading, upgrading and debugging of the software.

v. Local testing of faults, such as operation & maintenance path test.

5. Equipment alarm collection

i. Collecting alarm information for each ETRM in BTS.

ii. Collecting dry contact alarm information of environment monitoringequipment.

iii. Controlling dry contacts status of the environment monitoring

equipment.

CMM consists of seven parts: main controller unit, BS interface unit, clockunit, environment monitoring unit, active/standby interface unit, MMI unitand power supply unit. Figure 19 shows its functional structure.


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Chapter 3 - Module


F I G URE 19 FU N C T I O N A L ST RUCT URE O F CMM

Relayarray

Lineinterface

Switchingunit

BSinterface

Clockunit

Environmentmonitoringunit

Maincontroller

unit

Active/standbyinterfaceunit

MMIinterfaceunit

Powersupplyunit

CLKCLK-ref

Base station interfaceunit

Abis toETRM

Main Controller UnitMain controller unit implements initialization and connection configuration

for BS interface unit. It implements phase lock algorithm of clock unit andaccumulates frame numbers, collects alarms of external environmentmonitoring system, provides the link for communication with BTS internalmodules, and configures and monitors BTS internal devices.

BS Interface UnitBS interface unit consists of relay array, E1 interface, switching unit andBS interface.

Relay array implements automatic spanning (A-D spanning and A-Espanning) of cascading E1 interface when CMM is off.

E1 interface extracts clock from data stream of Abis interface as referenceclock of the clock unit, to implement synchronization between BTS andBSC.

BS interface unit provides E1s for cascading between Abis interfaces andsites and between cabinets in same site.

Switching unit implements connections between master cabinet andcascaded sites, between different cabinets in same site, and between CMM

and ETRM inside a cabinet. Main controller unit implements configurationsof switching unit.


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BS interface between CMM and ETRM implements differential drive of LowVoltage Differential Signaling (LVDS) between HW and CLK in the cabinet.

Clock UnitClock unit implements phase lock and frame number counting of 13 Mclock of GSM system.

It generates various clock signals required by the system, including digital13 M clock and clocks required by E1 interface and other links.

It also implements Frame Clock (FCLK) synchronization for each ETRM inthe same cabinet of the same site.

Clock unit has two working modes: free run mode and networksynchronization mode. Specific working mode depends on the background

configuration. It implements network synchronization of clocks when clock

unit is set to network synchronization mode.

Environment Monitoring UnitEnvironment monitoring unit consists of input/output of environmentmonitoring dry contacts.

It can collects three pairs of dry contact alarm signals.

The three pairs of dry contact alarm signals are sent via data bus to maincontroller unit for processing after passing the drive circuit.

MMI Interface UnitMMI is an interface unit between LMT and CMM.

LMT performs local operation & maintenance on BTS via MMI interface unit.

Power Supply UnitPower supply unit converts input -48 V to digital +3.3 V and analog +12 Vto power CMM. Besides, it provides over-voltage and under-voltage testfor output voltage and reports working status to CMM. It adopts partial hotbackup working mode.

Characteristics

IndicatorsThere are six indicators namely PWR, RUN, SYN, CLK, MST and STA, oneexternal test port (ETP) and two buttons (one reset button RST, and onemanual active/standby switchover button M/S) on CMM panel.

Figure 20 shows CMM panel and Table 5 gives a description of the

indicators.


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Chapter 3 - Module


F I G URE 20 CMM PA NE L

The green indicator PWR will turn on after CMM is powered on. Allindicators flash once after hardware initialization to verify whether theindicators are working normally. The indicator RUN turns red and theboard restarts three seconds later if self-test fails.

TA B L E 5 D ESCRI PT I O N O F CMM INDI CAT O RS

IndicatorNo.

Color Name Description Working Mode

1Green /red

PWRPowerindication

Green indicator on: Normal

Red indicator on: Alarm

Off: Power failure or other causes


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IndicatorNo.

Color Name Description Working Mode

2 Green RUN Runningindication

Green indicator flashing (4 Hz): Bootis running

Green indicator flashing (1 Hz):Application is running

Others: System abnormal

3Green /red

SYN

Indication ofclocksynchronizationmodes

Green indicator on: Abis interfacenetwork synchronization clock

Green indicator flashing (1 Hz): SDHnetwork synchronization clock

Red indicator flashing (1 Hz): Alarmfor E1 out of frame

Red indicator on: Line disconnected ornot connected

Off: Free run

4Green /red

CLK Clock indication

Green indictor on: Networksynchronization is in locked status

Green indicator flashing (1 Hz): Inlock mode

Red indicator on: Clock failure

5 Green MSTActive/standbystate indicator

Green indicator on: Active

Green indicator off: Standby

6Green /red

STAStatusindication

Off: Normal running

Green indicator flashing (1 Hz):System initialization (Low). See Note

3Green indicator flashing (4 Hz):Software loading

Red indicator flashing (1 Hz): LAPDlink broken (High). See Note 1

Red indicator flashing (4 Hz): HDLClink broken (Low). See Note 2

Red indicator on: All other alarmssuch as temperature, clock and FNalarm

7 No-lockbutton

M/SMaster/slavechangeoverbutton

This board is a slave one and it isineffective to press this button

This board is a master one. Press thisbutton to cause master/slavehandover when slave board exists andworks normally

8No-lockbutton

RST Reset button Press this button to reset this module

Note: 1. Low and high indicate the priority; 2. There is no LAPD link break alarm on CMM;3: HDLC alarm will not generate on active CMM of the master cabinet. HDLC link breakalarm on active CMM of slave cabinet is defined as CCComm indication (communicationbetween active CMMs of the cabinet). HDLC link broken alarms of all standby CMMs aredefined as CCComm indication (between active and standby CMMs)


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Chapter 3 - Module


Layout of CMMThere is only one CMM inside CMM module. Figure 21 shows CMM layout.

F I G URE 21 CMM LA Y O UT

HL5

HL4

HL3

HL2

HL1

HL6

S9

S7

S5

S8

S6

S3

S4

S1

S2

HL1~HL6 are indicators. S1 and S2 are switches. S3~S9 are DIP switches.

Jumpers and DIP Switches

Switch S1 resets CMM.

Switch S2 switches CMM between active and standby mode.

CMM uses DIP switches S3 ~ S8 to configure matching impedance of E1receiving end. These switches have same settings, as shown in Table 6:

TA B L E 6 D EF I N I T I O NS O F CMM DIP SWI T CHES S3~S8

1 2 3 4

75 impedance match (coaxial cable) ON ON OFF OFF

120 impedance match (twisted paircable)

OFF OFF ON ON

Note: BS21 only supports 75 impedance match mode

DIP switch S9 is to set E1 transmitting end to the ground, as shown inTable 7.


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TA B L E 7 D EF I N I T I O N O F CMM DIP SWI T CH S9

1 2 3 4 5 6 7 8

Grounded OFF OFF OFF OFF OFF OFF X X

Not grounded ON ON ON ON ON ON X X

Note: "X" means that this switch is not used

CMM External InterfacesThere is only one test port ETP on CMM module panel. Local Operation AndMaintenance (LMT) can be implemented on the terminal when PC connects

BTS (V2.2) through this port.

Transceiver Module for EDGE(ETRM)

OverviewETRM in GSM system implements control and processing of radio channels,

sending and receiving of radio channel data, modulating and demodulatingof baseband signals on the radio carrier, sending and receiving of the radio

carrier, and collecting fan and AEM alarms.

Functions and Working PrinciplesDifferent ETRM modules are designed in ZXG10 BS21 (V2.2) for differentGSM systems. Table 8 shows the types of ETRM modules.

TA B L E 8 ETRM T YPES

Working Band Module Name Description

GSM900 or EGSM900 ETRMG Support EDGE function

GSM850 ETRMC Support EDGE function

GSM1800 ETRMD Support EDGE function

GSM1900 ETRMP Support EDGE function

ETRM module falls into three functional units: Transceiver Process Unit(TPUE), Radio Carrier Unit (RCUE) and Power Amplifier Unit (PAUE). The

three functional units are realized by the transceiver processing board,radio carrier board, and the power amplifier board respectively. Besides,

ETRM contains a DPAS board to provide power for PAUE and report theover-voltage/under-voltage alarm signals to TPUE.

Figure 22 shows the composition of ETRM.


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Chapter 3 - Module


F I G URE 22 ETRM CO M PO SI T I O N SCHEM AT I C D I A G R A M

TPU

ERCUE

PAUEAEM To

antenna

Downlink

signal

Uplink

signal

Detecting

signal

ETRM

DPAS

Alarmsignal

TPUETPUE is realized by the transceiver processing board, DTPUE. It performsthe following functions:

1. Managing entire ETRM, updating software version received from CMM,loading DSP software, managing radio channel, reporting measurementdata, collecting and reporting alarm signal to CMM.

2. Processing and converting GSM signaling protocol

3. Processing baseband data of all full duplex channels on a TDMA frame.

4. Supporting full-rate voice service channel, enhancing full-rate voiceservice channel, full-rate data service channel, GPRS channel services,and EDGE channel services.

5. Supporting static and dynamic power control.

6. Supporting frequency hopping.

The transceiver processing board consists of CMM interface and clock-generating module, signaling processing and control module, basebandprocessing module, modulation module, frequency hopping module,receiver module, and alarm module. Figure 23 shows TPUE hardwarestructure.


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F I G URE 23 TPUE HA RDW A RE ST RUCT URE

??

??? ?

??

?

CMM

interface

andclock

generatio

nmodule

?

??

Signaling

processing

andcontrol

module

?

??

?

Baseband

processingmodule

Modulationmodule

Receivermodule

Frequencyhoppingmodule

Alarmmodule

UplinkPCM

Clock

DownlinkPCM

Functions of the modules:

1. CMM interface and clock generation module

This module generates synchronous clock signal required forcommunication between TPUE and CMM according to synchronoussignal provided by CMM. It sends uplink data to CMM after organizingthem according to certain timeslots.

Besides, it generates TDMA clock signal required by ETRM, such as

FCLK and OBCLK.2. Signaling processing and control module

This module processes and converts GSM signaling protocols, includinglayer-2 protocol LAPD with BSC, layer-2 protocol HDLC with CMM,layer-2 protocol LaPSM with Um interface and layer-3 radio resourcesmanagement protocol.

It monitors running status of respective TPUE processors and status ofRCUE, and sends alarm signals to CMM.

It generates the frame number in real time.

It implements static power control.

3. Baseband processing module

This module performs the base band processing of the eight channelson one TDMA frame. It implements rate adaptation, channel codingand interleaving as well as the generation of TDMA burst pulse, in

downlink direction. It combines the two channels of diversity receiversignals from receiving module, and implements digital demodulation

(GMSK demodulation and equalization), de-interleaving, channeldecoding and rate adaptation, in uplink direction.

4. Modulation module

This module adds dynamic power information of this timeslot to

generate a baseband digital I/Q signal, and sends the signal to RCUE


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Chapter 3 - Module


for processing according to TDMA burst pulse generated by basebandprocessing module.

5. Frequency hopping module

When ETRM is configured for frequency hopping, this module setsinitial frequency points for each PLL, modifies frequency points, andgenerates frequency hopping sequence. It sends them to frequencyhopping module via the baseband processing module. The frequency

hopping module extracts the frequency control information in downlinkburst pulse of the baseband processing module and generates the

signal required to control sending/receiving PLL during RF hopping, toimplement frequency hopping function.

6. Receiver module

This module receives from RCUE the two paths of high-speed parallelsignals sampled alternatively by the two receivers. After beingprocessed, these signals form baseband I/Q signals and are sent to the

baseband processing module in a serial mode.

7. Alarm module

Major function of this module is to collect alarm information of RCUEunit. This alarm information is sent to CMM for processing via signaling

processing and control module.

RCUERCUE is realized by four types of radio carrier board: DRCGE, DRCCE,DRCDE, and DRCPE. They support GSM/EGSM 900, GSM 850, GSM 1800,and GSM 1900 system respectively.

The radio carrier board consists of PLL, TX, RX and control circuit. Itperforms the following functions:

1. Transmits RF signal, including GMSK baseband signal generation,frequency conversion, power amplification and power control.

2. Receives RF signal, including frequency conversion, filtering,

intermediate amplification, A/D conversion and restoring back to I/Qsignals.

3. Status detection for each radio carrier board, including PA output endforward/reverse power detection, temperature detection and locking

indication of frequency synthesizer.

PAUEPAUE is realized by four types of power amplifier board: DPAGE, DPACE,DPADE, and DPAPE. They support GSM/EGSM 900, GSM 850, GSM 1800,and GSM 1900 system respectively.

It amplifies the power of GMSK/8PSK modulated RF signal injected by TXto required power level, and provides system monitoring with forwardpower detection, reverse power detection and temperature detectionsignals.


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ETRM CharacteristicsETRM module falls into ETRMG, ETRMC, ETRMD, and ETRMP according toworking frequency bands. Panels, indicators and external interfaces of

these modules are same. Take ETRMG as an example for description.

ETRMG PanelThere are six indicators, one external test port (ETP), one reset buttonRST, one power amplification output port TX, and two receiving input portsRX1 and RX2 on ETRMG panel.

The six indicators are: PWR, RUN, MOD, TST, ACT and STA.

Figure 24 shows ETRMG panel.

F I G URE 24 ETRM G PA NEL

Table 9 gives a description of ETRMG panel.

PWR green indicator is on after ETRMG power-on. All indicators flash oncesimultaneously after hardware initialization to verify whether the indicatorsare working normally.


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Chapter 3 - Module


TA B L E 9 D ESCRI PT I O N O F ETRM G PA NE L

IdentificationSymbol

Full Name Description

ETRMG Transceiver Module forGSM/EGSM 900

Name of the transceiver module for

GSM/EGSM 900 system. E indicates EDGEfunction is supported.

PWR Power Power indicator

RUN Run Running indicator

MOD Model BCCH mode indicator

TST ---- Reserved

ACT Active Channel activation indicator

STA State Status indicator

RST Reset Reset button

TX Transmitter Power amplifier output port

RX1 Receiver 1 Receiver input

RX2 Receiver 2(for diversity) Diversity receiver input

ETP Extend Test Port External test port

ETRMG IndicatorsTable 10 gives a description of indicators on ETRMG panel.

TA B L E 10 DESCRI PT I O N O F ETRM G I NDI CAT O RS

Indicator Color Name Description Working Mode

1Green/Red

PWRPowerindication

Green indicator on: Normal

Red indicator on: Alarm

Off: Power failure or other causes

2 Green RUNRunningindication

Green indicator flashing (4 times/ second):Boot is running

Green indicator flashing (1 time/ second):Application is running

Others: The system is abnormal

3Green/Red

MODChannel modeindication

Green indicator on: BCCH indication, not tobroadcast of System Info

Green indicator flashing (1 time/ second):BCCH indication, broadcasting System Info

Off: Non-BCCH indication

Red indicator on: BCCH blocking (block onany BCCHext)

4Green/Red

TST - Reserved


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Indicator Color Name Description Working Mode

5 Green ACTChannelactivation

indication

Green indicator on: Channel activationindication. See Note 1

Red indicator flashing: Channel blocking

indication. See Note 1Red indicator on: CU prohibition

6Green/Red

STAStatusindication

Off: Normal running

Green indicator flashing (1 time/ second):System initialization (Low). See Note 2

Green indicator flashing (4 times/ second):Software loading (High)

Red indicator flashing (1 time/ second):LAPD link broken (High)

Red indicator flashing (4 times/ second):HDLC link broken (Low)

Red indicator on: All other alarms such astemperature, clock and FN alarms

7No-lockbutton

RST Reset switch Press this button to reset this module

Note:

1. Channel activation indication displays the number of activated channels. ETRMadjusts width of indicator lighting control pulse to display the number ofactivated channels according to the number of activated channels. 00000000displays when 0 timeslot is activated. 1000000 displays when 1 timeslot is

activated. 11000000 displays when 2 timeslots are activated, and so on.2. Low and high indicate the priority.

Description:

1. The time of display (Td) of each bit is temporarily defined as 4Hz (0.25s). The

whole status display period is 16*Td=4s.

2. Timeslots for combined channels such as TCH/F, SDCCH/8 and SDCCH/4 areregarded as activated as long as any logic sub-channel on this channelcombination is activated (for example, one SDCCH sub-channel is activated).

3. Activation status of timeslots is defined as non-activate and is not counted inACT display statistics when they are assigned as public control channel anddedicated control channel (such as mainBCCH channel combination and

extBCCH channel combination).

4. Green indicator flashes only when all configured BCCH channels are normaland system messages are being transmitted if extBCCH channel combination isadopted. Red indicator flashes according to the number of blocked or faultychannels and flashing time is the same as 1, if one or more extBCCHchannels are blocked or faulty. Red indicator is always on if all extBCCHchannels are blocked or faulty.

ETRMG External InterfacesThe RF interface of ETRMG can connect with AEM. The RF output TX canconnect with TX1 and TX2 of CDU, TX1 ~ TX4 of CEU, and ITX of ECDU.


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Chapter 3 - Module


The RF input RX1 and RX2 can connect with RX1 ~RX4 of CDU, RX1 ~RX4of CEU, and RX1 ~ RX2 and RXD1 ~ RXD2 of ECDU.

The following takes S11 configuration for example to describe connectionrelationship between ETRM and AEM, as shown in Figure 25 and Table 11.

F I G URE 25 CO NNECT I O N O F EX T E R N A L INT ERF ACES O F ETRM

10

9

8

7

6

1

4

5

3

2

TA B L E 11 CO NNECT I O N BET WEEN ETRM A N D A EM

No. Cable Name Connections

1 SMAJW-SM86-SMAJW ETRM1 TX ~ ECDUG1 ITX

2 7/16-RG214-NJ ECDUG1 ANTD portbottom plate HYCOM1

3 7/16-RG214-NJ ECDUG1 ANT port bottom plate HYCOM2

4 SMAJW-SM86-SMAJW ETRM1 RX1 ~ ECDUG1 RXD1

5 SMAJW-SM86-SMAJW ETRM1 RX2 ~ ECDUG1 RX1


7 7/16-RG214-NJ ECDUG2 ANTD portbottom plate HYCOM3

8 7/16-RG214-NJ ECDUG2 ANT portbottom plate HYCOM4



ETRMG IndicesRated output power: 48 dBm 1 dB (for GSM service); 46 dBm 1 dB(for EDGE service)

Power fluctuation range: 42 dB

Above indices are applicable to ETRM of GSM900, EGSM900, GSM850 andGSM1800.


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Antenna Equipment Module(AEM)

OverviewFigure 26 shows location of AEM in the system.

F I G URE 26 L O CAT I O N O F A EM I N T HE SYST EM

ETRM

TX

RXAEM

Functions:

1. Providing bi-directional channel from BTS to the antenna for signals oftransmitting frequency band and from the antenna to BTS for signals

of receiving frequency band.

2. Generating alarms when SWR of the antenna port deteriorates.

3. Suppressing interference and spurious emission beyond workingfrequency band.

4. Implementing flexible carrier configuration.

5. Implementing diversity receiving.

AEM ClassificationZXG10 BS21 supports AEM such as Combiner Distribution Unit (CDU),Combiner Extension Unit (CEU), and E Combiner Distribution Unit (ECDU).

The following takes ECDU for example to describe AEM working principleand functions, panel, external interfaces, and indices.

ECDU

Working Principle and FunctionsECDU consists of a transceiving duplexer, VSWR detecting circuit, twoLNAs (each LNA includes a 1-to-2 splitter) and a receiving filter. It can

meet diversity receiving requirements, as shown in Figure 27.


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Chapter 3 - Module


F I G URE 27 ECDU ST RUCT URE

RX

Duplexer

Lightning

arrester

Transceivingantenna

RX

ETRM

VSWRtest

LNA

RX

1

RXfilter

Receivin

gantenna

Mainset

Diversity

RX2 LANalarm

LANpower

DAEM

TX

RXD1

RXD2

ECDU

Lightning

arrester

Figure 28 shows logical connection of ECDU. It supports two 1-to-2splitters, one receiver filter and one built-in duplexer.

F I G URE 28 ECDU L O G I C A L C O NNECT I O N

Duplexer


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Functions of the duplexer:

1. Providing bi-directional channel from BTS to antenna for signals of thetransmitting frequency band and from antenna to BTS for signals ofthe receiving frequency band.

2. Reporting alarms when SWR of the antenna port deteriorates.

3. Suppressing interference and spurious emission beyond the workingfrequency band.

The receiver filter is a bandpass filter, providing great suppression of theinterference beyond the receiving band, especially interference of thetransmitting band.

ECDU PanelAccording to working frequency band, ECDU have several types of panels:

ECDUG, ECDUD, ECDUC, and ECDUP. They are same except for name.(ECDUG is taken for example in the following sections.)

Figure 29 shows ECDUG panel.

F I G URE 29 ECDUG PA NEL

ECDUG

ANTD

RTE

ANT

There are six indicators (FPO, SWR1, SWR2, LNA1, PWR and LNA2), onetransmission power input (ITX), one radio test equipment port (RTE), two

low-noise amplifier output ports (RX1~RX2), two low-noise amplifier


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Chapter 3 - Module


output ports (RXD1~RXD2), one antenna feeder port (ANT) and oneantenna feeder for diversity port (ANTD) on ECDUG module panel.

Table 12 gives a description of ECDUG panel.

TA B L E 12 DESCRI PT I O N O F ECDUG

IdentificationSymbol

Full English Name Explanations

ECDUGE Combiner & Distribution Unitfor GSM 900

Name of E-type combiner andsplitter unit for GSM 900

ITX Input of TransmitterTransmission power input (poweramplifier output signal)

FPO Forward Power OutputIndicator of normal output offorward power

SWR1 No.1 alarm of voltage StandingWave Ratio

SWR level-1 alarm indicator

SWR2No.2 alarm of voltage StandingWave Ratio

SWR level-2 alarm indicator

PWR PowerPower indicator of the low-noiseamplifier

LNA1 Low Noise Amplifier1Alarm indicator (Channel 1) of thelow-noise amplifier

LNA2 Low Noise Amplifier2Alarm indicator (Channel 2) of thelow-noise amplifier

RTE Radio Test Equipment Radio test port

RX1 Receiver 1 Low-noise amplifier output port 1

RX2 Receiver 2 Low-noise amplifier output port 2

RXD1 Receiver for Diversity1Low-noise amplifier output port 1(diversity)

RXD2 Receiver for Diversity2Low-noise amplifier output port 2(diversity)

ANT Antenna Antenna feeder port

ANTD Antenna for Diversity Antenna feeder port (diversity)

Indicators on ECDU PanelTable 13 gives a description of indicators on ECDUG panel.

TA B L E 13 INDI CAT O RS O F ECDUG PA N EL

Indicator Color Identification Symbol Description

1 Green FPOIndicator of normal output of forwardpower

2 Red SWR1 SWR level-1 alarm indicator

3 Red SWR2 SWR level-2 alarm indicator


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Indicator Color Identification Symbol Description

4 Green PWR Power indicator of low-noise amplifier

5 Red LNA1 Alarm indicator

6 Red LNA2 Alarm indicator

ECDU External InterfacesRefer to Figure 30 and Table 14 for connections of ECDU externalinterfaces.

F I G URE 30 CO NNECT I O NS O F ECDU EX T E R N A L IN T E R F A C E S

10

9

8

7

6

1

4

5

3

2

TA B L E 14 CO NNECT I O N BET WEEN ETRM A N D A EM

No. Cable Name Connection Relation


2 7/16-RG214-NJ ECDUG1 ANTD port bottom plate HYCOM1

3 7/16-RG214-NJ ECDUG1 ANT portbottom plate HYCOM2




7 7/16-RG214-NJ ECDUG2 ANTD port bottom plate HYCOM3

8 7/16-RG214-NJ ECDUG2 ANT port bottom plate HYCOM4



ECDU IndicesTable 15 shows technical indices of GSM900 ECDUG.


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TA B L E 15 TE C H N I C A L I NDI CES O F GSM900 ECDUG

Electrical Parameter Frequency Range (MHz) Index

Transmission channel

Echo loss of antenna port

880 ~ 915 (any inbandcontinuous 25 MHz)


> 18 dB

> 18 dB

Echo loss of Tx port925 ~ 960 (any inbandcontinuous 25 MHz)

> 20 dB

Insertion loss from Tx port to antennaport


< 1.15 dB

Suppression at receiving frequency bandfrom Tx1 port to antenna port relative to925 ~ 960 (any inband continuous 25MHz)

880~915 (any inbandcontinuous 25 MHz) > 95 dBc

Maximum input power of Tx interface 80 W

Cross-modulation (2 20 W input) < -105 dBm

Receive Channel

Insertion loss from antenna to Rx port880 ~ 915 (any inbandcontinuous 25 MHz)

< 1.15 dB

Echo loss of Rx port880 ~ 915 (any inbandcontinuous 25 MHz)

> 18 dB

Relative to 880 ~ 915 (any inbandcontinuous 25 MHz), suppression fromantenna to Rx port


> 95 dBc

Relative to 880 ~ 915 (any inbandcontinuous 25 MHz), suppression fromantenna to Rx port

30 kHz ~ 870 MHz (or 860MHz) Note 1

> 45 dBc

Coupling Channel

Coupling degree of RTE port925 ~ 960 (any inbandcontinuous 25 MHz)

40 1 dB

Coupling degree of RTE port880 ~ 915 (any inbandcontinuous 25 MHz)

40 1 dB

Coupling degree of ANT-REV

Coupling degree of TX-FWR (deducting

TX-ANT loss)

40 1 dB

Difference between ANT_REV couplingdegree and TX_FWR coupling degree

< 1 dB

ANT_REV coupling direction 30 dB

TX_FWR coupling direction

925 ~ 960 (any inbandcontinuous 25 MHz

18 dB

Forward dynamic range from Tx port toalarm part

11 ~ 49 dBm

Monitoring precision925 ~ 960 (any inbandcontinuous 25 MHz)

1 dB

Standing wave ratio monitoring Green indicator on < 2.0


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Standing wave ratio alarm 1 Red indicator 1 on2.0 < VSWR 60 dBc

> 35 dBc

> 25 dBc

> 15 dBc

Note 1: When the uplink frequency band is 880 ~ 905 MHz, the frequency range ofsuppression from antenna to Rx port relative to 880 ~ 915 (any inband continuous 25 MHz)is 30 kHz ~ 860 MHz

Note 2: No alarm will be output when input power of Tx port is less than 21 dBm

Table 16 shows technical indices of GSM1800 ECDUD.

TA B L E 16 TE C H N I C A L I NDI CES O F GSM1800 ECDUD


Transmitting channel

Echo loss of antenna port1805 ~ 1880

1710 ~ 1785

> 18 dB

> 18 dB

Echo loss of Tx port 1805 ~ 1880 > 20 dB

Relative to 1805 ~ 1880, suppression atreceiving frequency band from Tx port toantenna port

1710 ~ 1785 > 95 dBc

Maximum input power of Tx port 80 W


Receiving channel

Insertion loss from antenna to Rx port 1710 ~ 1785 < 1.15 dB

Echo loss of Rx port 1710 ~ 1785 > 18 dB

Relative to 1710 ~ 1785, suppressionfrom antenna to Rx port

1805 ~ 1880 > 95 dBc

Relative to 1710 ~ 1785, suppressionfrom antenna to Rx port

30 kHz ~ 1690 MHz > 45 dBc

Coupling channel

Coupling degree of RTE port 1805 ~ 1880 40 1 dB


ANT-REV coupling degree

Coupling degree of TX-FWR (deductingTX-ANT loss)

40 1 dB


1805 ~ 1880

< 1 dB


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TX_FWR coupling direction 18 dB


11 ~ 49 dBm

Monitor precision 1805 ~ 1880 1 dB



> 35 dBc

> 15 dBc

Note: No alarm will be output when input power of each Tx port is less than 21 dBm

Table 17 shows technical indices of GSM1800 ECDUC (850M).

TA B L E 17 TE C H N I C A L I NDI CES O F GSM850 ECDUC


Transmitting channel

Echo loss of antenna port 824 ~ 849869 ~ 894

> 18 dB> 18 dB

Echo loss of Tx port 869 ~ 894 > 20 dB

Insertion loss from Tx port to antennaport

869 ~ 894 < 1.15 dB

Relative to 869-894, suppression atreceiving frequency band from Tx port toantenna port

824 ~ 849> 95 dBc

Maximum input power of Tx port 80 W


Receiving channel

Echo loss of Rx port 824 ~ 849 > 18 dB

Insertion loss from antenna to Rx port 824 ~ 849 < 2.65 dB

Relative to 824 ~ 849, suppression fromantenna to Rx port

869 ~ 894 > 95 dBc

Relative to 824 ~ 849, suppression fromantenna to Rx port

851 ~ 869 > 60 dBc

Suppression from antenna to Rx port 30 kHz ~ 804 MHz > 45 dBc

Coupling channel



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Coupling degree of ANT-REV

Coupling degree of TX-FWR (deductingTX-ANT loss)

401 dB


< 1 dB


TX_FWR coupling direction

869 ~ 894

18 dB


11 ~ 49 dBm

Monitoring precision 869 ~ 894 1 dB



> 50 dBc

> 20 dBc

Receiving Filter Indices

Table 18 shows technical indices of GSM900 receiving filter.

TA B L E 18 TE C H N I C A L I NDI CES O F GSM900 RECEI V I NG F I L T E R

Electrical Parameter Frequency Range (MHz) Index (dB)

Echo loss of Rxin port880 ~ 915 (any inbandcontinuous 25 MHz)

>18 dB

Echo loss of Rxout port880 ~ 915 (any inbandcontinuous 25 MHz)

>18 dB

Insertion loss from Rxin port to Rxoutport


75 dB

Suppression degree from Rxin port toRxout port

30 kHz ~ 870 (or 860 MHz) >45 dB


TA B L E 19 TE C H N I C A L I NDI CES O F GSM1800 RECEI V I NG F I L T E R


Echo loss of Rxin port 1710 ~ 1785 >18 dB


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Echo loss of Rxout port 1710 ~ 1785 >18 dB


1710 ~ 1785 75 dB


30 kHz ~ 1690 >45 dB


TA B L E 20 REQ UI REM ENT S O F T E C H N I C A L I NDI CES O F GSM 850 RECEI V I NG F I L T E R


Echo loss of Rxin port 824 ~ 849 >18 dB

Echo loss of Rxout port 824 ~ 849 >18 dB


824 ~ 849 75 dB


30 kHz ~ 1690 >45 dB

BoardDAEM is power interface board, which supplies power to LNA, VSWR andTMAs in AEM. It sends various alarm signals to TPUE, including poweralarm, LNA over-current alarm, TMA over-current alarm and

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