BTS3006C Modules

4 BTS3006C Modules

About This Chapter

This topic describes the BTS3006C modules. These modules are: the DATM, DBMB, DDCM,DDPM, DDRM, DMCM, DPSM, DSCM, and DSEM.

4.1 BTS3006C Module ListThis topic describes the BTS3006C modules. These modules are: the DATM, DBMB, DDCM,DDPM, DDRM, DMCM, DPSM, DSCM, and DSEM.

4.2 DATMThis topic describes the DATM. The Antenna and TMA Control Module for DDRM BTS(DATM) is configured into the DAFM slot in a cabinet.

4.3 DBMBThis topic describes the DBMB. The Module Backplane (DBMB) has nine slots. These slotsconsist of one main control slot, three DDRM slots, four DAFM slots, and one power slot.

4.4 DDCMThis topic describes the DDCM. The Double Combining Module for DDRM BTS (DDCM) isconfigured into the DAFM slot in a cabinet.

4.5 DDPMThis topic describes the DDPM. The Double transceivers Digital and Radio frequency Module(DDPM) is configured into the DAFM slot in a cabinet.

4.6 DDRMThis topic describes the DDRM. The Double transceivers Digital and Radio frequency Module(DDRM) is configured into the DDRM slot in a cabinet.

4.7 DMCMThis topic describes the DMCM. The Main Control Module for DDRM BTS (DMCM) isconfigured into the main control slot that is on the lower right part of a cabinet.

4.8 DPSMThis topic describes the DPSM. The Power Supply Module for DDRM BTS (DPSM) isconfigured into the power slot that is at the upper right part of a cabinet.

4.9 DSCM

iSite BTS3006CHardware Description 4 BTS3006C Modules

Issue 01 (2007-08-10) Huawei Technologies Proprietary 4-1

This topic describes the DSCM. The Single Combining Module for DDRM BTS (DSCM) isconfigured into the DAFM slot in a cabinet. Only when a single sector can be configured withmore than four TRXs, the DSCM can be used.

4.10 DSEMThis topic describes the DSEM. The DC SPD and EMI Module (DSEM) are configured into thepower slot that is at the upper right part of a cabinet.

4.11 Modules in the FAN BoxThis topic describes the modules in the fan box. The fan box is located below the DDRM. Itprovides ventilation and dissipates heat so that the DDRM can operate normally.

4 BTS3006C ModulesiSite BTS3006C

Hardware Description

4-2 Huawei Technologies Proprietary Issue 01 (2007-08-10)

4.1 BTS3006C Module ListThis topic describes the BTS3006C modules. These modules are: the DATM, DBMB, DDCM,DDPM, DDRM, DMCM, DPSM, DSCM, and DSEM.

Table 4-1 lists the BTS3006C modules.

Table 4-1 BTS3006C modules

Subsystem Module Full Spelling Number of Modulesin a Single Cabinet

FullConfiguration

MinimumConfiguration

CommonSubsystem

DMCM Main ControlModule for DDRMBTS

1 1

DBMB Module Backplane 1 1

Double-transceiversubsystem

DDRM Double transceiversDigital and Radiofrequency Module

3 1

RF Front-EndSubsystem

DDPM Double DuplexerModule for DDRMBTS

4 1

DDCM Double CombiningModule for DDRMBTS

2 0

DSCM Single CombiningModule for DDRMBTS

1 0

DATM Antenna and TMAControl Module forDDRM BTS

1 0

Power subsystem DPSM Power SupplyModule for DDRMBTS

1 0

DSEM DC SPD and EMIModule

1 0

4.2 DATMThis topic describes the DATM. The Antenna and TMA Control Module for DDRM BTS(DATM) is configured into the DAFM slot in a cabinet.



4.2.1 Functions of the DATMThis topic describes the functions of the DATM. The DATM controls the remote electrical tiltunit (RET) and feeds power to the TMA.

4.2.2 Working Principles of the DATMThis topic describes the working principles of the DATM. The DATM consists of the followingfive parts: single-chip microcomputer and CPLD part, modulation/demodulation part, feedingpart, lightning protection part, and current alarm detection part.

4.2.3 LEDs and Ports on the DATMThis topic describes the LEDs and ports on the DATM. Three LEDs on the DATM indicate theworking status of the DATM. Six ports on the DATM are RET control signal ports.

4.2.1 Functions of the DATMThis topic describes the functions of the DATM. The DATM controls the remote electrical tiltunit (RET) and feeds power to the TMA.

The functions of the DATM are as follows:

l Feed power to the TMA

l Monitor the feeding current

l Control the RET

l Report the RET control alarm signals

4.2.2 Working Principles of the DATMThis topic describes the working principles of the DATM. The DATM consists of the followingfive parts: single-chip microcomputer and CPLD part, modulation/demodulation part, feedingpart, lightning protection part, and current alarm detection part.

Figure 4-1 shows the working principles of the DATM.

Figure 4-1 Working principles of the DATM

DMCMSingle-chip

microcomputerand CPLD part

Modulation/demodulation

partFeeding part Lightning

protection part

Current alarmdetection part

DATM

Single-Chip Microcomputer and CPLD Partl Communicate with the DMCM

l Collect and report alarm information




l Control the switches of the feeding part

Modulation/Demodulation Partl Filter signals after modulation.

l Send the received signals to the CPLD after these signals are filtered and demodulated.

Feeding PartFeed power to the equipment at the top of the tower and control the switches used for feeding.

Lightning Protection PartPerform the lightning protection on the ANT ports

Current Alarm Detection PartDetect the output feeding current and report the current to the single-chip microcomputer afterthe AD collection.

4.2.3 LEDs and Ports on the DATMThis topic describes the LEDs and ports on the DATM. Three LEDs on the DATM indicate theworking status of the DATM. Six ports on the DATM are RET control signal ports.

PanelFigure 4-2 shows the DATM panel.

Figure 4-2 DATM Panel

DATM

RUNACTALM

ANT0

ANT1

ANT2

ANT3

ANT4

ANT5



LED

Table 4-2 describes the LEDs on the DATM panel.

Table 4-2 Description of the LEDs on the DATM panel

LED Color Description Status Meaning

RUN Green Indicates therunning statusof the DMCM

Slow flash (on for onesecond and off for onesecond)

The power supply isnormal, however, thecommunication with theDMCM is abnormal.

Slow flash (on for 0.5seconds and off for 0.5seconds)

The DATM runsnormally and thecommunication with theDMCM is normal.

Fast flash (on for 0.25seconds and off for 0.25seconds)

Programs are beingloaded.

Off There is no powersupply or the DATM isfaulty.

ACT Green Indicates therunning statusof the services

On The AISG links arenormal.

Off The AISG links areabnormal.

Fast flash at unfixedintervals

AISG link transmissionis under progress.

ALM Red Indicateswhether thereare alarms

On An alarm is generated,such as an overcurrentalarm.

Off The DATM runsnormally.

Port

Table 4-3 describes the ports on the DATM panel.

Table 4-3 Description of the ports on the DATM

Port Type Function

ANT0 SMA femaleconnector

Supplies power to the TMA






Port Type Function









4.3 DBMBThis topic describes the DBMB. The Module Backplane (DBMB) has nine slots. These slotsconsist of one main control slot, three DDRM slots, four DAFM slots, and one power slot.

4.3.1 Functions of the DBMBThis topic describes the functions of the DBMB. The DBMB provides signal interconnectionbetween modules and supplies power for each module.

4.3.2 Ports on the DBMBThis topic describes the ports on the DBMB. The DBMB has nine slots. The main control slotuses a DL52 waterproof connector. The DDRM slot, DAFM slot, and power slot use DL37waterproof connectors.

4.3.1 Functions of the DBMBThis topic describes the functions of the DBMB. The DBMB provides signal interconnectionbetween modules and supplies power for each module.

The functions of the DBMB are as follows:

l Provide signal interconnection among the DPSM/DSEM, DMCM, DDRM, DDPM,DDCM, DSCM, and DATM

l Supply power for each module

4.3.2 Ports on the DBMBThis topic describes the ports on the DBMB. The DBMB has nine slots. The main control slotuses a DL52 waterproof connector. The DDRM slot, DAFM slot, and power slot use DL37waterproof connectors.

Figure 4-3 shows the DBMB connector.



Figure 4-3 Appearance of the DBMB connectors

DL37 DL52

4.4 DDCMThis topic describes the DDCM. The Double Combining Module for DDRM BTS (DDCM) isconfigured into the DAFM slot in a cabinet.

4.4.1 Functions of the DDCMThis topic describes the functions of the DDCM. The DDCM combines two routes of TX signalsof the DDRM. Then, the DDCM outputs the two combined signals to the DDPM or the DSCM.

4.4.2 Working Principles of the DDCMThis topic describes the working principles of the DDCM. The DDCM consists of two DHCBs.One DHCB consists of a 3 dB electrical bridge and high-power load.

4.4.3 Ports on the DDCMThis topic describes the ports on the DDCM. There are six ports on the DDCM. The TX portsare used to input the TX signals of the DDRM. COMA port and COMB port are used to outputthe combined signals.

4.4.1 Functions of the DDCMThis topic describes the functions of the DDCM. The DDCM combines two routes of TX signalsof the DDRM. Then, the DDCM outputs the two combined signals to the DDPM or the DSCM.

The DDCM combines two routes of TX signals of the DDRM. Then, the DDCM outputs thetwo combined signals to the DDPM or the DSCM.




NOTE

The DDCM can perform only the first combination and cannot perform the second combination. There isno DSCM in the BTS3002E. Therefore, only the combined signals can be output to the DDPM.

4.4.2 Working Principles of the DDCMThis topic describes the working principles of the DDCM. The DDCM consists of two DHCBs.One DHCB consists of a 3 dB electrical bridge and high-power load.

Figure 4-4 shows the working principles of the DDCM.

Figure 4-4 Working principles of the DDCM

DHCB

TXA 1

TXA 2

3 dBelectrical bridge

High-powerload

TXCOM A

DHCB

TXB 1

TXB 2

High-powerload

TXCOM B

DDCM


3 dB Electrical Bridge

The 3 dB electrical bridge combines two routes of input signals before outputting them.

High-Power Load

The power of the output signals that are combined by the 3 dB electrical bridge consists of thefollowing power: the power that is output to the combination output ports and the power (abouta half of the signal power) that is output from another port on the combiner. The power of thesesignals needs to be minimized by a high-power load so that the reflection is avoided.

4.4.3 Ports on the DDCMThis topic describes the ports on the DDCM. There are six ports on the DDCM. The TX portsare used to input the TX signals of the DDRM. COMA port and COMB port are used to outputthe combined signals.



Panel

Figure 4-5 shows the DDCM panel.

Figure 4-5 DDCM panel

DDCM

TXA1

TXA2

TXB2

TXB1

COMA

COMB

Port

Table 4-4 describes the ports on the DDCM panel.

Table 4-4 Description of the ports on the DDCM panel

Port Type Function

TXA1 N femaleconnector

Inputs TX signals from the DDRM to the DDCM

TXA2 N femaleconnector


COMA N femaleconnector

Outputs combined signals from the DDCM to theDDPM

TXB1 N femaleconnector


TXB2 N femaleconnector


COMB N femaleconnector

Outputs combined signals from the DDCM to theDDPM




4.5 DDPMThis topic describes the DDPM. The Double transceivers Digital and Radio frequency Module(DDPM) is configured into the DAFM slot in a cabinet.

4.5.1 Functions of the DDPMThis topic describes the functions of the DDPM. The DDPM sends multiple routes of RF TXsignals from the DDRM to the antenna through the duplexer. At the same time, The DDPMamplifies the RX signals from the antenna and divides one-route signals into three before sendingthese signals to the receiver in the DDRM.

4.5.2 Working Principles of the DDPMThis topic describes the working principles of the DDPM. The DDPM consists of the Dual LNAand Control Unit for DTRU BTS (DLCU), the duplexer, and the power coupler.

4.5.3 LEDs and Ports on the DDPMThis topic describes the LEDs and ports on the DDPM. Four LEDs on the DDPM indicate theworking status of the DDPM. Ten ports on the DDPM consist of the antenna jumper ports, theTX signal output ports, and the TX signal input ports.

4.5.1 Functions of the DDPMThis topic describes the functions of the DDPM. The DDPM sends multiple routes of RF TXsignals from the DDRM to the antenna through the duplexer. At the same time, The DDPMamplifies the RX signals from the antenna and divides one-route signals into three before sendingthese signals to the receiver in the DDRM.

The functions of the DDPM are as follows:

l Detect VSWR alarms in the antenna system

l Control the gains for the receive low noise amplifier

l Send multiples routes of RF signals from the transceiver to the antenna through the duplexer

l Amplify the RX signals from the antenna and divide one-route signals into three beforesending these signals to the receiver in the DDRM

4.5.2 Working Principles of the DDPMThis topic describes the working principles of the DDPM. The DDPM consists of the Dual LNAand Control Unit for DTRU BTS (DLCU), the duplexer, and the power coupler.

Figure 4-6 shows the working principles of the DDPM.



Figure 4-6 Working principles of the DDPM

RX1ARX2ARX3A

RX1BRX2BRX3B

DC +5 V

DLCU

Duplexer

Duplexer

Power coupler

Power coupler

BUS

DDPM

TX1

TX/RX ANTA

TX2

TX/RX ANTB

DLCUl Test VSWR alarms on ANTA channel and ANTB channel

l Control the gains for the receive low noise amplifier unit with a step level of 1 dB in 16levels (0–15)

l Test the forward power and reverse power of the duplexer unit and the forward power andreverse power of the duplexer ports (A and B)

l Report the board alarms and status information to the DMCM

DuplexerThe duplexer consists of a receive filter and a transmit filter. The duplexer provides a reliablechannel so that the receive signals and the transmit signals can share the same antenna. Then,the transmit signals with large power cannot affect weak receive signals.

Power CouplerThe power coupler is used to abstract signals and provide them for the DLCU to perform astanding-wave detection.




4.5.3 LEDs and Ports on the DDPMThis topic describes the LEDs and ports on the DDPM. Four LEDs on the DDPM indicate theworking status of the DDPM. Ten ports on the DDPM consist of the antenna jumper ports, theTX signal output ports, and the TX signal input ports.

Panel

Figure 4-7 shows the DDPM panel.

Figure 4-7 DDPM panel

DDPM

TXB

ANTB ANTA

TXA

RXB1RUN

ALM

VSWRA

VSWRBRXB2

RXB3

RXA1

RXA2

RXA3

LED

Table 4-5 describes the LEDs on the DDPM panel.

Table 4-5 Description of the LEDs on the DDPM panel

LED Color Description

Status Meaning

RUN Green Indicatestherunningstatus andpower-onstatus oftheDDPM

On There is power supply,however, the DDRM is faulty.

Off There is no power supply or theDDRM is faulty.

Slow flash (on forone second and offfor one second)

The DDRM runs normally.




Status Meaning

Fast flash (on for 0.5seconds and off for0.5 seconds)

The software is beingdownloaded.

Fast flash (on for0.25 seconds and offfor 0.25 seconds)

The write-protect function ofsoftware is stopped or theDDPM is in the aging test state.

ALM Red Indicateswhetherthere arealarms

On There are alarms (including aVSWR alarm) and the DDPMis faulty.

Off There is no fault.


The DDPM is starting or isloading the latest applicationprograms.

VSWRA Red Indicateswhether aVSWRalarm isgeneratedonChannelA


A VSWR alarm is generated onChannel A.

On A VSWR critical alarm isgenerated on channel A.

Off No VSWR alarm is generatedon channel A.

VSWRB Red Indicateswhether aVSWRalarm isgeneratedonchannel B


A VSWR alarm is generated onchannel B.

On A VSWR critical alarm isgenerated on channel B.

Off No VSWR alarm is generatedon channel B.

PortTable 4-6 describes the ports on the DDPM.

Table 4-6 Description of the ports on the DDPM

Port Type Function

TXA N female connector Inputs the TX signals sent from the DDRM

Inputs the combined signals of the DDCM/DSCMInputs the combined signals of the DDCM/DSCM

TXB N female connector Inputs the TX signals sent from the DDRM




Port Type Function

Inputs the combined signals of the DDCM/DSCMInputs the combined signals of the DDCM/DSCM

RXA1 SMA femaleconnector

Main 1 output port


Main 2 output port


Main 3 output port

RXB1 SMA femaleconnector

Diversity 1 output port





ANTA N female connector Connects with the 1/4-inch jumpers

ANTB N female connector Connects with the 1/4-inch jumpers

4.6 DDRMThis topic describes the DDRM. The Double transceivers Digital and Radio frequency Module(DDRM) is configured into the DDRM slot in a cabinet.

4.6.1 Functions of the DDRMThis topic describes the functions of the DDRM. The functions of the DDRM consist of the RFtransmit, RF RX, baseband processing, and fan control.

4.6.2 Working Principles of the DDRMThis topic describes the working principles of the DDRM. The DDRM consists of the DBRUboard, the DFCB board, the DTPS board, and the DDPA module.

4.6.3 LEDs and Ports on the DDRMThis topic describes the LEDs and ports on the DDRM. Four indicators on the DDRM panelindicate the working statuses of boards and of other subsystems that have different functions.Seven ports on the DDRM panel are used to complete the signal interconnection with the DAFM.

4.6.1 Functions of the DDRMThis topic describes the functions of the DDRM. The functions of the DDRM consist of the RFtransmit, RF RX, baseband processing, and fan control.

The functions of the RF transmit part are as follows: modulate the baseband signals on two TRXsto the RF signals, perform up-conversion of signals, filter, support RF frequency hopping, andamplify signals.

The functions of the RF RX part are as follows:



l Modulate the RF signals on two TRXs, Support RF frequency hopping, and diversityreceive

l Complete the dividing reception

The functions of the baseband processing are as follows:

l Complete the signaling processing, coding/decoding channels, interleaving/deinterleaving,and modulation/demodulation

l Support the speech service and fax service

l Support different data services specified in Phase II

l Support the RF loopback test and changeover of the faulty phase-locked loop

l Support transmit diversity and 4-way receive diversity

l Amplify the output power

The functions of the fan control parts are as follows:

l Supply power for and control the fans

l Detect whether the fans are in position, monitor the status of the fans, report the fan alarms,and adjust the fan speed

4.6.2 Working Principles of the DDRMThis topic describes the working principles of the DDRM. The DDRM consists of the DBRUboard, the DFCB board, the DTPS board, and the DDPA module.

Figure 4-8 shows the working principles of the DDRM.

Figure 4-8 Working principles of the DDRM

DDPA

DOMU DAFM

DDRM

DBRU

DTPS

-48V DC

DFCB

DFCBl Complete EMI filtering of both sides of the –48 V TRX power




l Complete the soft start of the fan power and the isolation of the control signals

DTPSl Convert the –48 V DC input power into +28 V output power for the DDPA

l Supply three-route power (8 V, 4 V, and 3.3 V) required by the DDRM

DDPAl Amplify the signals transmitted from the DBRU to the required power level

l Couple the output power for a loopback test and the power detection

l Supply the detected temperature of the power amplifier

DBRUThe DBRU is the main functional module of the DDRM. The DBRU performs modulation/demodulation, data processing, and combination/division between the baseband signals and theRF signals.

4.6.3 LEDs and Ports on the DDRMThis topic describes the LEDs and ports on the DDRM. Four indicators on the DDRM panelindicate the working statuses of boards and of other subsystems that have different functions.Seven ports on the DDRM panel are used to complete the signal interconnection with the DAFM.

PanelFigure 4-9 shows the DDRM panel.



Figure 4-9 DDRM panel

TX1

DDRM

TX2

RUN/SLPACTALM

RF-INDRXM1RXD1RXM2

RXD2

FAN

LEDTable 4-7 describes the LEDs on the DDRM panel.

Table 4-7 Description of the LEDs on the DDRM


Status Meaning

RUN/SLP

Green Indicatestherunningstatusandpower-on statusof theDDRM

On There is power supply, however, theDDRM is faulty.

Off There is no power supply or theDDRM is faulty.

Slow flash (on for2 seconds and offfor 2 seconds)

The DDRM is starting.

Slow flash (on forone second andoff for onesecond)

The DDRM runs normally.





Status Meaning

Fast flash (on for0.2 seconds andoff for 0.2seconds)

The DMCM is sendingconfiguration parameters to theDDRM.

Red TheDDRMis in thedormantstate.

On The DDRM is in the dormant state.

ACT Green Indicatestherunningstatus ofTRXs

On The DDRM is running (TheDMCM sends the configurationparameters to the DDRM and thecell where the DDRM is located instarts to work.). All the channelsunder the DDRM work normally.

Off The communication between theDMCM is not established.


Only parts of the logic channelswork normally (including after theTRX mutual aid).

ALM Red Indicateswhetherthere arealarms

On (includinghigh-frequencyflash)

A critical alarm is generated. TheDDRM is faulty.

Off The DDRM is normal.

RF_IND Red Indicateswhetheran alarmisgenerated on theRF port

Off Normal


There is a radio link alarm.

Port

Table 4-8 describes the ports on the DDRM panel.

Table 4-8 Description of the ports on the DDRM

Port Type Function

TX1 N female connector TRX signal TX1 output

TX2 N female connector TRX signal TX2 output



Port Type Function

RXM1 SMA femaleconnector

Main RX port of TRX 1 or Diversity 1 RX port of TRX1

RXD1 SMA femaleconnector

Diversity RX port of TRX 1 or Diversity 2 RX port ofTRX 1

RXM2 SMA femaleconnector

Main RX port of TRX 2 or Diversity 3 RX port of TRX1

RXD2 SMA femaleconnector

Diversity RX port of TRX 2 or Diversity 4 RX port ofTRX 1

FAN Round waterproofconnector

Controls the fans and their power supply

4.7 DMCMThis topic describes the DMCM. The Main Control Module for DDRM BTS (DMCM) isconfigured into the main control slot that is on the lower right part of a cabinet.

4.7.1 Functions of the DMCMThis topic describes the functions of the DMCM. The DMCM provides ports for the primaryreference clock, power supply, transmission, maintenance, and external alarm collection. TheDMCM controls and manages a BTS.

4.7.2 Working Principles of the DMCMThis topic describes the working principles of the DMCM. The DMCM consists of the DOMU,DLPU, and IASU. The IASU is optional. The DOMU consists of the BIU, MCU, MCK, andoptical combined-cabinet logical unit.

4.7.3 LEDs and Ports on the DMCMThis topic describes the LEDs and ports on the DMCM. 13 LEDs on the DMCM indicate theworking status of the subsystems that have different functions. 11 ports on the DMCM are usedto provide the primary reference clock, the terminal maintenance network ports, the E1 ports,and the extended optical module ports.

4.7.4 DIP Switches on the DMCMThis topic descibes the DIP switches on the DMCM. There are five DIP switches on the DMCM.The E1-R0/1 and E1-R2/3 DIP switches are used to select whether the rings of E1 cables aregrounded. The 75/120 DIP switch is used to select of the received matched impedance. Bit 2and bit 4 of the MODE DIP switch are reserved. Bit 1 and bit 3 of the MODE DIP switch areused to select transmission modes and software status. The RACK DIP switch is used to selectracks.

4.7.1 Functions of the DMCMThis topic describes the functions of the DMCM. The DMCM provides ports for the primaryreference clock, power supply, transmission, maintenance, and external alarm collection. TheDMCM controls and manages a BTS.

The functions of the DMCM are as follows:




l Provide the heating board and control circuits to start low temperature

l Provide +5 V DC power for the DDPM

l Support four-route E1 access and communicate with the BSC through E1 ports (or opticalfibers)

l Support STM-1 access (optical)

l Support one-route RS485 full duplex serial port

l Provide and manage the BTS clock

l Control, maintain, and operate the BTS

l Provide 10 Mbit/s network ports for the terminal maintenance

l Provide fault management, configuration management, performance management, andsecurity management

l Support four-route dry contact alarm inputs

l Provide the extended optical module for cabinet grouping

l Provide multiplexing

l Download the software

4.7.2 Working Principles of the DMCMThis topic describes the working principles of the DMCM. The DMCM consists of the DOMU,DLPU, and IASU. The IASU is optional. The DOMU consists of the BIU, MCU, MCK, andoptical combined-cabinet logical unit.

Figure 4-10 shows the working principles of the DMCM.

Figure 4-10 Working principles of the DMCM

DMCM

MCU

DOMU

OML

MCK

Clock

Opticalcombined-cabinetlogical

unit

BIUAbis

DLPU

IASU

OPTCombined-cabinet

optical cable

SDH

Clocksynchronization

DDRMDBUS

CBUS2

4 E1s

1 RS-485

4 dry contacts



DLPUl Provide lighting protection for E1 signals

l Provide four-route dry contact and external 485 port signal lightning protection

l Convert signals from the external signals (E1, dry contact alarm signals, external 485 port)to the signals in the DOMU

IASU

Convert E1 signals into the SDH optical transmission signals through the IASU

BIUl Connect the BTS and the BSC

l Exchange the information between the E1 timeslot data and the DDRM through the DBUS

l Synchronize the lower-level clock and the upper-level clock

MCUl Support various communication protocols, such as the UART and the HDLC

l Control the BIU and support the communication between the BSC and the BTS

l Provide platform for the running of the MCK software modules

l Manage the DDRM through CBUS2

MCKl Provide the high precision clock sources required by the BTS and the system clock that is

based on the clock sources

l Judge the phase-lock status, provide software phase-lock, provide DA adjustment, andgenerate frame numbers

Optical Combined-Cabinet Logical Unitl Abstract and send the combined-cabinet clock

l Receive and transmit the optical combined-cabinet data and optical cabinet group data

l Monitor and switch over the combined-cabinet and cabinet group optical fiber loop

4.7.3 LEDs and Ports on the DMCMThis topic describes the LEDs and ports on the DMCM. 13 LEDs on the DMCM indicate theworking status of the subsystems that have different functions. 11 ports on the DMCM are usedto provide the primary reference clock, the terminal maintenance network ports, the E1 ports,and the extended optical module ports.

Panel

Figure 4-11 shows the DMCM panel.




Figure 4-11 DMCM panel

DMCM

SFP-ASFP-B

MMI13M

FC/2MDOOR

TIU

MODRUN

LIU0LIU1LIU2

LIU3

PLLTRUNOPTWOPTEHEATER

LED

Table 4-9 describes the LEDs on the DMCM panel.

Table 4-9 Description of the LEDs on the DMCM


Status Meaning

RUN Green Indicates therunningstatus of theDMCM

Slow flash (on for 2seconds and off for 2seconds)

The OML links areblocked.


Normal

Fast flash at unfixedintervals

BSC data is being loaded.

Off The DDRM does not havepower supply

MOD Green Indicates theselection of

On E1 transmission mode




Status Meaning

thetransmissionmodes


Optical transmissionmode

Off Others

LIU0 Green Indicateswhether analarm isgenerated onE1 port 3

On There is a terminal alarmon E1 port 0.

Fast flash (on for 1seconds and off for 1seconds)

There is a remote alarm onE1 port 0.

Off The transmission isnormal.
















PLL Green Indicates theoperationstatus of thephase-locked loop

On Free-run


Pull-in





Status Meaning


Lock

Off Abnormal

TRUN Green Indicates theoperationstatus of theIASU

On CBUS2 link is broken.


The IASU runs normally.


The IASU is faulty.

Off The MCU is notconfigured with theIASU.

OPTW Green Indicateswhether analarm isgenerated onwestwardoptical port

On There is a terminal alarmon the westward opticalport.


There is a remote alarm onthe westward optical port.

Off The optical path is normal.

OPTE Green Indicateswhether analarm isgenerated onwestwardoptical port

On There is a terminal alarmon the eastward opticalport.


There is a remote alarm onthe eastward optical port.


HEATER

Red Indicatorsthe power-onstatus of theheatingboard

On The heating board ispowered on.

Off The heating board is notpowered on.

SFP-A Green Indicatesoptical port 1for thecombinedcabinets


On There is an SFP-Aterminal alarm.


There is an SFP-A remotealarm.




Status Meaning

SFP-B Green Indicatesoptical port 2for thecombinedcabinets


On There is an SFP-Bterminal alarm.


There is an SFP-B remotealarm.

PortTable 4-10 describes the ports on the front panel of the DMCM.

Table 4-10 Description of the ports on the DMCM panel

Port Type Function

SFP-A SFP Indicates optical module A in the combinedcabinets

SFP-B SFP Indicates optical module B in the combinedcabinets

MMI RJ45 Indicates terminal maintenance network port

TIU RJ45 Indicates IASU terminal maintenancenetwork port

13M SMB Indicates 13 Mbit/s test clock output

FC/2M SMB Indicates frame clock and 2 Mbit/s clock

DOOR Common connector Door status port

Figure 4-12 shows the ports at the bottom of the DMCM.




Figure 4-12 Ports at the bottom of the DMCM

E1_0/1

E1_2/3

ALM

OPT

Frontpanel

E1_

0/1

E1_

2/3

ALM OP

TTable 4-11 describes the ports at the bottom of the DMCM.

Table 4-11 Description of the ports at the bottom of the DMCM

Port Type Function

E1_0/1 Round waterproofconnector

Port 0 and port 1 of the E1 transmissioncables

E1_2/3 Round waterproofconnector

Port 2 and port 3 of the E1 transmissioncables

ALM Round waterproofconnector

Alarm input port

OPT Round waterproofconnector

Optical transmission port

4.7.4 DIP Switches on the DMCMThis topic descibes the DIP switches on the DMCM. There are five DIP switches on the DMCM.The E1-R0/1 and E1-R2/3 DIP switches are used to select whether the rings of E1 cables aregrounded. The 75/120 DIP switch is used to select of the received matched impedance. Bit 2and bit 4 of the MODE DIP switch are reserved. Bit 1 and bit 3 of the MODE DIP switch areused to select transmission modes and software status. The RACK DIP switch is used to selectracks.



Figure 4-13 shows the location of the DIP switches on the DMCM and the manufacturingsettings of these DIP switches.

Figure 4-13 DIP Switches on the DMCM

DMCM

MODRUN

LIU0LIU1LIU2

LIU3

PLLTRUNOPTWOPTEHEATER

Front panel

1/0R-1

E3/2

R-1E

021/57E

DO

MK

CA

R

DIP switch(E1 transmission mode)

1/0R-1

E3/2

R-1E

021/57E

DO

MK

CA

R

DIP switch(optical transmission mode)

Table 4-12 describes the DIP switches on the DMCM.

Table 4-12 Description of the DIP switches on the DMCM

DIP Switch DIP Bit ON/OFF Function

E1-R0/1 1 ON The ring of the transmitting end of E1 0 isgrounded.

OFF The ring of the transmitting end of E1 0 is notgrounded.

2 ON The ring of the receiving end of E1 0 is grounded.

OFF The ring of the receiving end of E1 0 is notgrounded.





3 ON The ring of the transmitting end of E1 1 isgrounded.




E1-R2/3 1 ON The ring of the transmitting end of E1 2 isgrounded.




3 ON The ring of the transmitting end of E1 3 isgrounded.




75/120 1 ON E1 1 matches 75-ohm resistance.

OFF E1 1 matches 120-ohm resistance.

2 ON E1 2 matches 75-ohm resistance.






MODE 1 ON E1 transmission modes

OFF Optical transmission mode

2 ON Reserved

OFF Reserved

3 ON Official software status




OFF aging software status

4 ON Reserved

OFF Reserved

Table 4-13 describes the RACK DIP switch on the DMCM.

Table 4-13 Description of the RACK DIP Switches on the DMCM

Bits on the RACK DIP Switch Function

4 3 2 1

ON ON ON ON Rack 0 indicates the main cabinet in the maincabinet group.

ON ON ON OFF Rack 1 indicates the extension cabinet in themain cabinet group.

ON ON OFF ON Rack 2 indicates the extension cabinet in themain cabinet group.

ON ON OFF OFF Rack 3 indicates the main cabinet in theextension cabinet group.

ON OFF ON ON Rack 4 indicates the extension cabinet in theextension cabinet group.

ON OFF ON OFF Rack 5 indicates the extension cabinet in theextension cabinet group.

NOTE

Bit 4 on the RACK DIP switch is reserved temporarily. By default, bit 4 is set to ON.

4.8 DPSMThis topic describes the DPSM. The Power Supply Module for DDRM BTS (DPSM) isconfigured into the power slot that is at the upper right part of a cabinet.

4.8.1 Functions of the DPSMThis topic describes the functions of the DPSM. The DPSM converts 220 V AC power or 110V AC power into –48 V DC power and supplies power for each module of the BTS3006C/BTS3002E.

4.8.2 Working Principles of the DPSMThis topic describes the working principles of the DPSM. The DPSM consists of the protectionunit, EMC filtering unit, power factor correction unit (PFC), auxiliary power conversion unit,control module, communication and alarm unit, and auxiliary power unit.

4.8.3 LEDs and Ports on the DPSM




This topic describes the LEDs and ports on the DPSM. Three LEDs on the DPSM indicateworking status of the DPSM. One port on the DSEM is used to supply power.

4.8.1 Functions of the DPSMThis topic describes the functions of the DPSM. The DPSM converts 220 V AC power or 110V AC power into –48 V DC power and supplies power for each module of the BTS3006C/BTS3002E.

The functions of the DPSM are as follows:

l Convert 220 V AC power or 110 V AC power into –48 V DC power and supply the powerfor each module of the BTS3006C/BTS3002E.

l Provide complete power system management and monitor AC power failure alarms andlightning protection failure alarms

l Provide short-circuit protection, overcurrent protection, input overvoltage protection,output overvoltage protection, and overheat protection, and report the internal temperature

4.8.2 Working Principles of the DPSMThis topic describes the working principles of the DPSM. The DPSM consists of the protectionunit, EMC filtering unit, power factor correction unit (PFC), auxiliary power conversion unit,control module, communication and alarm unit, and auxiliary power unit.

Figure 4-14 shows the working principles of the DPSM.

Figure 4-14 Working principles of the DPSM

Protection unit EMC filteringunit PFC

Control module

Auxiliary powerconversion unit

Main powerconversion unit

Auxiliary power

Communicationand alarm unit

Signal output Auxiliary -48 V Main -48 V

220 V/110 V

DPSM

Lightning Protection Unit

Release and absorb the lightning stroke energy carried by the external input 220 V/110 V ACpower, ensure the safety of the lower-level circuit components, and detect failures.



EMI Filtering Partl Suppress the interference signals to protect power from being disrupted by the external

electromagnetic signals

l Suppress the electromagnetic interference generated by power to ensure the normal runningof other equipment

PFC

The PFC uses the active power factor correction circuits to ensure that the input power factor is0.98 or higher. The harmonic wave interference with the electric network caused by power canbe reduced.

Main Power Conversion Unit

The main power conversion unit completes the conversion from the DC high voltage into –48V.

Auxiliary Power Conversion Unit

After the AC input power fails, the auxiliary power conversion unit can generate power for morethan 500 ms so that the main control module of the BTS system can have sufficient time toperform the urgent data processing.

Control Modulel Supply the Boolean value control signals for the main power conversion unit and the

auxiliary power conversion unit

l Detect the current status of the input voltage, the current status of the output voltage, andthe internal temperature of the DPSM.

Communication and Alarm Unitl Report the internal temperature of the DPSM

l Through dry contacts, report the lightning protection failure alarms, input overvoltagealarms, and AC power failure alarms

Auxiliary Power Module

Supply 5 V and 12 V power for the communication and alarm unit and the control unit in theDPSM

4.8.3 LEDs and Ports on the DPSMThis topic describes the LEDs and ports on the DPSM. Three LEDs on the DPSM indicateworking status of the DPSM. One port on the DSEM is used to supply power.

Panel

Figure 4-15 shows the DPSM panel.




Figure 4-15 DPSM panel

INPUT

DPSM

OUTPUTFAIL

PEL N

LEDTable 4-14 describes the LEDs on the DPSM panel.

Table 4-14 Description of the LEDs on the DPSM panel

LED Color Status Meaning

INPUT Green On The power input is normal and there is nofault.

Off The power input is abnormal and there isa fault.

OUTPUT Green On The power output is normal and there is nofault.

Off The power output is abnormal and there isa fault.

FAIL Red On there is a module protection alarm or amodule fault alarm.

Off The power module is functional.

PortTable 4-15 describes the ports on the DPSM panel.



Table 4-15 Description of the ports on the DPSM panel

Port Type Function

Input terminal OT terminal Power input port

4.9 DSCMThis topic describes the DSCM. The Single Combining Module for DDRM BTS (DSCM) isconfigured into the DAFM slot in a cabinet. Only when a single sector can be configured withmore than four TRXs, the DSCM can be used.

4.9.1 Functions of the DSCMThis topic describes the functions of the DSCM. The DSCM combines two routes of combinedoutput signals and outputs them to the DDPM.

4.9.2 Working Principles of the DSCMThis topic describes the working principle of the DSCM. The DSCM consists of one DHCB.The DHCB consists of the 3 dB electrical bridge and high-power load.

4.9.3 Ports on the DSCMThis topic describes the ports on the DSCM. Three ports on the DSCM are used to input tworoutes of TX signals and output the combined signal.

4.9.1 Functions of the DSCMThis topic describes the functions of the DSCM. The DSCM combines two routes of combinedoutput signals and outputs them to the DDPM.

The DSCM combines two routes of combined output signals and outputs them to the DDPM.

NOTE

The DDCM can perform only the second combination and cannot perform the first combination.

4.9.2 Working Principles of the DSCMThis topic describes the working principle of the DSCM. The DSCM consists of one DHCB.The DHCB consists of the 3 dB electrical bridge and high-power load.

Figure 4-16 shows the working principles of the DSCM.

Figure 4-16 Working principles of the DSCM

TXB 1

TXB 2

DHCB


High-powerload

TXCOM B

DSCM




3 dB Electrical BridgeThe 3 dB electrical bridge combines two routes of signals before outputting them.

High-Power LoadThe power of the output signals that are combined by the 3 dB electrical bridge consists of thefollowing power, that is, the power that is output to the combination output ports and the power(about a half of the signal power) that is output from another port on the combiner. To avoidreflection, these signal power needs to be absorbed by high-power load.

4.9.3 Ports on the DSCMThis topic describes the ports on the DSCM. Three ports on the DSCM are used to input tworoutes of TX signals and output the combined signal.

PanelFigure 4-17 shows the DSCM panel.

Figure 4-17 DSCM panel

DSCM

TX COM

TX1

TX2

PortTable 4-16 describes the ports on the DSCM panel.



Table 4-16 Description of the ports on the DSCM panel

Port Type Function

TX1 N female connector Inputs TX signals from the DDCM to the DSCM

TX2 N female connector Inputs TX signals from the DDCM to the DSCM

TXCOM N female connector Outputs combined signals from the DSCM to theDDPM

4.10 DSEMThis topic describes the DSEM. The DC SPD and EMI Module (DSEM) are configured into thepower slot that is at the upper right part of a cabinet.

4.10.1 Functions of the DSEMThis topic describes the functions of the DSEM. The DSEM provides the –48 V DC power foreach module in a cabinet.

4.10.2 Working Principles of the DSEMThis topic describes the working principles of the DSEM. The DSEM consists of the lightningprotection module (DLPP), a DC power switch, and a filter.

4.10.3 LEDs and Ports on the DSEMThis topic describes the LEDs and ports on the DSEM. Two LEDs on the DSEM indicate thepower and to display the working status of the DSEM. One port on the DSEM is used to supplypower.

4.10.1 Functions of the DSEMThis topic describes the functions of the DSEM. The DSEM provides the –48 V DC power foreach module in a cabinet.

The functions of the DSEM are as follows:

l Provide the –48 V DC power for each module in a cabinet

l Provide the reverse connection of power supply, lightning protection failure alarms, andfiltering functions

4.10.2 Working Principles of the DSEMThis topic describes the working principles of the DSEM. The DSEM consists of the lightningprotection module (DLPP), a DC power switch, and a filter.

Figure 4-18 shows the working principles of the DSEM.




Figure 4-18 Working principles of the DSEM

DC switch

Lightning protectionmodule

Filter module

-48 V input

-48 V output

DSEM

Externalpower supply

DBMB/EBMB

Lightning Protection Modulel Report lightning protection failure alarms

l Indicate power input

Filterl Suppress the interference signals to protect power from being disrupted by the external

electromagnetic signalsl Suppress the electromagnetic interference generated by power to ensure the normal running

of other equipment

DC Power SwitchControl the input of the external DC signals

4.10.3 LEDs and Ports on the DSEMThis topic describes the LEDs and ports on the DSEM. Two LEDs on the DSEM indicate thepower and to display the working status of the DSEM. One port on the DSEM is used to supplypower.

PanelFigure 4-19 shows the DSEM panel.



Figure 4-19 DSEM panel

LEDTable 4-17 describes the LEDs on the DSEM panel.

Table 4-17 Description of the LEDs on the DSEM

LED Color Status Meaning

INPUT Green On The power supply is normal and there is no fault.

Off The power input is abnormal and there is a fault.

FAIL Red On there is a module protection alarm or a modulefault alarm.

Off The power module is functional.

PortTable 4-18 describes the ports on the DSEM panel.

Table 4-18 Description of the ports on the DSEM panel

Port Type Function

Input terminal OT terminal Power input port

4.11 Modules in the FAN BoxThis topic describes the modules in the fan box. The fan box is located below the DDRM. Itprovides ventilation and dissipates heat so that the DDRM can operate normally.

Appearance of a fanFigure 4-20 shows a BTS3006C/BTS3002E fan.




Figure 4-20 Appearance of a fan

There is only one port on the BTS3006C/BTS3002E fan box. The fan cables are fixed to thisport.

FunctionsThe BTS3006C/BTS3002E fan provides ventilation and dissipates heat so that the DDRM canoperate normally.

PrinciplesThe BTS3006C/BTS3002E uses the principle of direct ventilation and dissipation. The fandirectly extracts air from the bottom of the a cabinet and dissipates heat for the DDRM.

NOTE

If the TRXs of the BTS3002E work in 20 W mode, you does not need to configure a fan.



BTS3006C Modules

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