Huawei BTS3 Series Operating and installation instructions

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual Contents
Issue 01 (2006-11-18) Huawei Technologies Proprietary i
Contents
1 Overview of the Hardware.......................................................................................................1-1
1.1 Hardware Structure .......................................................................................................................................1-2
1.1.1 Indoor Base Station..............................................................................................................................1-2
1.1.2 Outdoor Base Station ...........................................................................................................................1-2
1.2 Hardware Description ...................................................................................................................................1-3
1.2.1 Indoor Base Station..............................................................................................................................1-3
1.2.2 Outdoor Base Station ...........................................................................................................................1-4
2 Cabinet.........................................................................................................................................2-1
2.1 Cabinet Configuration...................................................................................................................................2-2
2.1.1 BTS30 ..................................................................................................................................................2-2
2.1.2 BTS312 ................................................................................................................................................2-3
2.1.3 BTS3006A ...........................................................................................................................................2-4
2.1.4 BTS3012A ...........................................................................................................................................2-6
2.2 Functional Subsystem ...................................................................................................................................2-7
2.2.1 Overview..............................................................................................................................................2-7
2.2.2 Common Subsystem ............................................................................................................................2-9
2.2.3 Signal Processing Subsystem.............................................................................................................2-11
2.2.4 Antenna Feeder Subsystem ................................................................................................................2-12
2.3 Technical Specifications..............................................................................................................................2-13
2.3.1 Dimension..........................................................................................................................................2-13
2.3.2 Weight ................................................................................................................................................2-13
2.3.3 Power Supply.....................................................................................................................................2-13
2.3.4 Power Consumption...........................................................................................................................2-14
3 Board.............................................................................................................................................3-1
3.1 Overview.......................................................................................................................................................3-2
3.2 ABB...............................................................................................................................................................3-3
3.2.1 Functions..............................................................................................................................................3-3
3.2.2 Panel.....................................................................................................................................................3-3
3.2.3 DIP Switch ...........................................................................................................................................3-5
3.3 CDU ..............................................................................................................................................................3-6
3.3.1 Functions..............................................................................................................................................3-6

Contents
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
ii Huawei Technologies Proprietary Issue 01(2006-11-18)
3.3.2 Structure and Principle.........................................................................................................................3-6
3.3.3 Front Panel...........................................................................................................................................3-7
3.3.4 Rear Panel ..........................................................................................................................................3-10
3.4 CMB............................................................................................................................................................3-14
3.5 ECDU..........................................................................................................................................................3-16
3.5.1 Functions............................................................................................................................................3-16
3.5.2 Structure and Principle.......................................................................................................................3-16
3.5.3 Front Panel.........................................................................................................................................3-17
3.5.4 Rear Panel ..........................................................................................................................................3-19
3.6 EDU ............................................................................................................................................................3-23
3.6.1 Functions............................................................................................................................................3-23
3.6.2 Structure and Principle.......................................................................................................................3-23
3.6.3 Front Panel.........................................................................................................................................3-24
3.6.4 Rear Panel ..........................................................................................................................................3-26
3.7 ESCU ..........................................................................................................................................................3-28
3.7.1 Functions............................................................................................................................................3-28
3.7.2 Panel...................................................................................................................................................3-29
3.8 FMU............................................................................................................................................................3-30
3.8.1 Functions............................................................................................................................................3-30
3.8.2 DIP Switch .........................................................................................................................................3-30
3.9 MDU ...........................................................................................................................................................3-31
3.9.1 Structure and Principle.......................................................................................................................3-31
3.9.2 Panel...................................................................................................................................................3-32
3.10 O2TCB ......................................................................................................................................................3-34
3.10.1 Functions..........................................................................................................................................3-34
3.10.2 DIP Switch .......................................................................................................................................3-34
3.11 PBU ...........................................................................................................................................................3-37
3.11.1 Functions..........................................................................................................................................3-37
3.11.2 Structure and Principle.....................................................................................................................3-37
3.11.3 Panel.................................................................................................................................................3-39
3.12 PMU..........................................................................................................................................................3-41
3.12.1 Functions..........................................................................................................................................3-41
3.12.2 Panel.................................................................................................................................................3-42
3.13 PSU ...........................................................................................................................................................3-43
3.13.1 Functions..........................................................................................................................................3-43
3.13.2 Panel.................................................................................................................................................3-43
3.14 PWB..........................................................................................................................................................3-45
3.15 SCU...........................................................................................................................................................3-47
3.15.1 Functions..........................................................................................................................................3-47
3.15.2 Structure and Principle.....................................................................................................................3-47
3.15.3 Panel.................................................................................................................................................3-47
3.16 TCU...........................................................................................................................................................3-48

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual Contents
Issue 01 (2006-11-18) Huawei Technologies Proprietary iii
3.16.1 Panel.................................................................................................................................................3-49
3.16.2 DIP Switch .......................................................................................................................................3-50
3.16.3 Difference Between the TCB REV.0 and the VER.B.......................................................................3-51
3.17 TDU ..........................................................................................................................................................3-52
3.17.1 Functions..........................................................................................................................................3-52
3.17.2 Panel.................................................................................................................................................3-52
3.18 TES............................................................................................................................................................3-55
3.18.1 Functions..........................................................................................................................................3-55
3.18.2 Structure and Principle.....................................................................................................................3-55
3.18.3 Panel.................................................................................................................................................3-56
3.19 ASU...........................................................................................................................................................3-58
3.19.1 Functions..........................................................................................................................................3-58
3.19.2 Panel.................................................................................................................................................3-58
3.19.3 Jumper and DIP Switch....................................................................................................................3-61
3.20 PAT............................................................................................................................................................3-64
3.20.1 Functions..........................................................................................................................................3-64
3.20.2 Panel.................................................................................................................................................3-64
3.20.3 Jumper and DIP Switch....................................................................................................................3-66
3.21 TMU..........................................................................................................................................................3-68
3.21.1 Functions..........................................................................................................................................3-68
3.21.2 Structure and Principle.....................................................................................................................3-68
3.21.3 Panel.................................................................................................................................................3-70
3.21.4 DIP Switch .......................................................................................................................................3-73
3.21.5 Difference between REV.B and REV.C ...........................................................................................3-76
3.22 TRB...........................................................................................................................................................3-76
3.22.1 DIP Switch .......................................................................................................................................3-76
3.22.2 Differences between REV.0 and REV.A ..........................................................................................3-80
3.23 TRX...........................................................................................................................................................3-81
3.23.1 Functions..........................................................................................................................................3-81
3.23.2 Structure and Principle.....................................................................................................................3-81
3.23.3 Panel.................................................................................................................................................3-84

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual Figures
Issue 01 (2006-11-18) Huawei Technologies Proprietary v
Figures
Figure 1-1 Hardware structure of the BTS30/BTS312.......................................................................................1-2
Figure 1-2 Hardware structure of the BTS3006A/BTS3012A ...........................................................................1-3
Figure 2-1 Typical configuration of the BTS30..................................................................................................2-3
Figure 2-2 Typical configuration of the BTS312................................................................................................2-4
Figure 2-3 Typical configuration of the BTS3006A...........................................................................................2-5
Figure 2-4 Storage battery cabinet without front door .......................................................................................2-6
Figure 2-5 Typical configuration of the BTS3012A...........................................................................................2-7
Figure 2-6 Position of the common subsystem in the BTS30/312 ...................................................................2-10
Figure 2-7 Common subsystem of the BTS3012A/BTS3006A .......................................................................2-10
Figure 2-8 Position of the signal processing subsystem................................................................................... 2-11
Figure 2-9 Position of the antenna feeder subsystem in the BTS system. ........................................................2-12
Figure 3-1 ABB working principle.....................................................................................................................3-3
Figure 3-2 ABB Panel ........................................................................................................................................3-4
Figure 3-3 ABB layout .......................................................................................................................................3-5
Figure 3-4 CDU structure...................................................................................................................................3-7
Figure 3-5 CDU front panel ...............................................................................................................................3-8
Figure 3-6 CDU (type A) rear panel.................................................................................................................3-10
Figure 3-7 CDU (type B) rear panel.................................................................................................................3-11
Figure 3-8 CDU (type C) rear panel.................................................................................................................3-12
Figure 3-9 CDU (type D) rear panel.................................................................................................................3-13
Figure 3-10 CDU (type E) rear panel ...............................................................................................................3-14
Figure 3-11 CMB layout...................................................................................................................................3-15
Figure 3-12 ECDU structure ............................................................................................................................3-17
Figure 3-13 ECDU front panel.........................................................................................................................3-17
Figure 3-14 ECDU (type A) rear panel ............................................................................................................3-20
Figure 3-15 ECDU (type B) rear panel ............................................................................................................3-21

Figures
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
vi Huawei Technologies Proprietary Issue 01(2006-11-18)
Figure 3-16 ECDU (type C) rear panel ............................................................................................................3-22
Figure 3-17 EDU structure ...............................................................................................................................3-23
Figure 3-18 EDU front panel............................................................................................................................3-25
Figure 3-19 EDU (type A) rear panel ...............................................................................................................3-27
Figure 3-20 EDU (type B) rear panel ...............................................................................................................3-28
Figure 3-21 ESCU panel ..................................................................................................................................3-29
Figure 3-22 FMU layout...................................................................................................................................3-30
Figure 3-23 MDU functional structure.............................................................................................................3-32
Figure 3-24 MDU panel ...................................................................................................................................3-33
Figure 3-25 O2TCB layout...............................................................................................................................3-35
Figure 3-26 PBU functional structure ..............................................................................................................3-38
Figure 3-27 PBU panel.....................................................................................................................................3-40
Figure 3-28 PMU panel....................................................................................................................................3-42
Figure 3-29 PSU panel .....................................................................................................................................3-44
Figure 3-30 PWB layout of the BTS30 ............................................................................................................3-45
Figure 3-31 PWB layout of the BTS312 and the BTS3012A...........................................................................3-45
Figure 3-32 PWB layout of the BTS3006A .....................................................................................................3-46
Figure 3-33 SCU functional structure ..............................................................................................................3-47
Figure 3-34 SCU panel.....................................................................................................................................3-48
Figure 3-35 TCU panel.....................................................................................................................................3-49
Figure 3-36 TCU layout ...................................................................................................................................3-50
Figure 3-37 TDU layout ...................................................................................................................................3-52
Figure 3-38 TES functional structure ...............................................................................................................3-56
Figure 3-39 TES panel......................................................................................................................................3-57
Figure 3-40 ASU panel.....................................................................................................................................3-59
Figure 3-41 ASU layout ...................................................................................................................................3-61
Figure 3-42 DIP switch that is used to set IP addresses....................................................................................3-63
Figure 3-43 PAT panel......................................................................................................................................3-65
Figure 3-44 PAT layout.....................................................................................................................................3-67
Figure 3-45 TMU functional structure .............................................................................................................3-69
Figure 3-46 Time sequence of clock signals ....................................................................................................3-70
Figure 3-47 TMU panel....................................................................................................................................3-71
Figure 3-48 TMU layout ..................................................................................................................................3-73

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual Figures
Issue 01 (2006-11-18) Huawei Technologies Proprietary vii
Figure 3-49 TMU DIP switches .......................................................................................................................3-74
Figure 3-50 TRB layout of the BTS30 and the BTS3006A..............................................................................3-77
Figure 3-51 TRB layout of the BTS312 and the BTS3012A............................................................................3-79
Figure 3-52 TRB layout (REV.0) .....................................................................................................................3-80
Figure 3-53 TRX logical structure....................................................................................................................3-81
Figure 3-54 TRX panel.....................................................................................................................................3-84

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual Tables
Issue 01 (2006-11-18) Huawei Technologies Proprietary ix
Tables
Table 1-1 Hardware structure of the BTS30/BTS312.........................................................................................1-3
Table 1-2 Hardware structure of the BTS3006A/BTS3012A .............................................................................1-4
Table 2-1 Composition and functions of each functional subsystem of the BTS3X ..........................................2-8
Table 2-2 Dimension of the BTS3X cabinet.....................................................................................................2-13
Table 2-3 Weight of the BTS3X series .............................................................................................................2-13
Table 2-4 Power supply of the BTS3X series...................................................................................................2-13
Table 2-5 Power consumption of the BTS3X series.........................................................................................2-14
Table 3-1 BTS3X boards ....................................................................................................................................3-2
Table 3-2 Indicators on the ABB panel...............................................................................................................3-4
Table 3-3 Functions of ABB DIP switch S2 .......................................................................................................3-5
Table 3-4 CDU indicators...................................................................................................................................3-8
Table 3-5 CDU ports...........................................................................................................................................3-9
Table 3-6 Mapping between the knob setting and current strength of the TMA (type B).................................3-11
Table 3-7 Mapping between the knob setting and current strength of the TMA (type C).................................3-12
Table 3-8 Mapping between the switch setting and the current strength of the TMA (type D) ........................3-13
Table 3-9 CMB DIP switch description............................................................................................................3-15
Table 3-10 ECDU indicators ............................................................................................................................3-18
Table 3-11 ECDU ports ....................................................................................................................................3-18
Table 3-12 Mapping between the knob setting and current strength of the TMA (type B)...............................3-21
Table 3-13 Mapping between the knob setting and current strength of the TMA (type C)...............................3-22
Table 3-14 EDU indicators ...............................................................................................................................3-25
Table 3-15 EDU ports.......................................................................................................................................3-26
Table 3-16 ESCU ports.....................................................................................................................................3-29
Table 3-17 FMU DIP Switch ............................................................................................................................3-31
Table 3-18 MDU ports......................................................................................................................................3-33
Table 3-19 O2TCB DIP switch.........................................................................................................................3-36

Tables
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
x Huawei Technologies Proprietary Issue 01(2006-11-18)
Table 3-20 PBU indicators................................................................................................................................3-40
Table 3-21 PBU ports .......................................................................................................................................3-41
Table 3-22 PMU indicators...............................................................................................................................3-42
Table 3-23 PSU indicators ................................................................................................................................3-44
Table 3-24 PWB DIP switch.............................................................................................................................3-46
Table 3-25 SCU ports .......................................................................................................................................3-48
Table 3-26 TCU indicators ...............................................................................................................................3-49
Table 3-27 Description of the TCU DIP switch................................................................................................3-50
Table 3-28 TDU ports.......................................................................................................................................3-53
Table 3-29 TDU DIP switch setting..................................................................................................................3-54
Table 3-30 TES indicators ................................................................................................................................3-57
Table 3-31 ASU indicators................................................................................................................................3-59
Table 3-32 RUN (ASU) indicator information .................................................................................................3-60
Table 3-33 ASU ports .......................................................................................................................................3-60
Table 3-34 ASU DIP switches and jumpers......................................................................................................3-61
Table 3-35 Tributary related DIP switches and jumpers...................................................................................3-63
Table 3-36 PAT indicators.................................................................................................................................3-65
Table 3-37 PAT ports ........................................................................................................................................3-66
Table 3-38 PAT DIP switches and jumpers.......................................................................................................3-67
Table 3-39 TMU indicators...............................................................................................................................3-71
Table 3-40 TMU ports ......................................................................................................................................3-72
Table 3-41 Mapping of S9 setting and OML timeslot ......................................................................................3-75
Table 3-42 Mapping of S9 setting and OML timeslot ......................................................................................3-76
Table 3-43 S12 setting ......................................................................................................................................3-76
Table 3-44 TRB DIP switch description of the BTS30 and the BTS3006A .....................................................3-78
Table 3-45 TRB DIP switches of the BTS312 and the BTS3012A ..................................................................3-79
Table 3-46 TRX indicators ...............................................................................................................................3-85
Table 3-47 TRX ports .......................................................................................................................................3-85

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual 1 Overview of the Hardware
Issue 01 (2006-11-18) Huawei Technologies Proprietary 1-1
1 Overview of the Hardware
About This Chapter
The following table lists the contents of this chapter.
Title Description
1.1 Hardware Structure Describes the hardware structure of the BTS3X series.
1.2 Hardware Description Describes the hardware of the BTS3X series.

1 Overview of the Hardware
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
1-2 Huawei Technologies Proprietary Issue 01 (2006-11-18)
1.1 Hardware Structure
1.1.1 Indoor Base Station
The BTS30/BTS312 consists of cabinets, boards inside the cabinet, cables, and antenna
system.
Figure 1-1 shows the hardware structure of the BTS30/BTS312.
Figure 1-1 Hardware structure of the BTS30/BTS312
Indoor cabinet
BTS30/BTS312
Bias-Tee
DDF
Boolean
value
Power
Jumper
Antenna
Feeder
Jumper
Antenna
system
Power cable
E1 trunk cable
Fiber
Signal cable
TMA
Feeder
window
Optical
transmission
equipment
1.1.2 Outdoor Base Station
The BTS3006A/BTS3012A consists of cabinets, boards inside the cabinet, cables, auxiliary
equipment, and antenna system.
Figure 1-2 shows the hardware structure of the BTS3006A/BTS3012A.

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual 1 Overview of the Hardware
Issue 01 (2006-11-18) Huawei Technologies Proprietary 1-3
Figure 1-2 Hardware structure of the BTS3006A/BTS3012A
Antenna
Feeder
Jumper
Feeder system
Outdoor cabinet
TMA
Jumper
Auxiliary
equipment
Power cable
E1 trunk cable
Fiber
Signal cable
BTS3006A/BTS3012A
1.2 Hardware Description
1.2.1 Indoor Base Station
Table 1-1 shows the hardware structure of the BTS30/BTS312.
Table 1-1 Hardware structure of the BTS30/BTS312
Equipment Components
Equipment of the antenna
system
Antenna, feeder, jumper, feeder window, and Tower Mounted
Amplifier (TMA)
The TMA is optional.
Cabinet Cabinet
Boards inside the cabinet For example, the timing/transmission and management unit
(TMU), the transceiver unit (TRX), and the combiner and
divider unit (CDU)
Cables Fibers, E1 trunk cables, signal cables, and power cables

1 Overview of the Hardware
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
1-4 Huawei Technologies Proprietary Issue 01 (2006-11-18)
1.2.2 Outdoor Base Station
Table 1-2 shows the hardware structure of the BTS3006A/BTS3012A.
Table 1-2 Hardware structure of the BTS3006A/BTS3012A
Equipment Components
Antenna
system
A BTS antenna system and a GPS antenna system
The BTS antenna system is mandatory and the GPS antenna system is
optional.
Auxiliary
equipment
Transmission equipment, power lightning-protection filter box, AC/DC
units, the transmission supply unit (TSU), storage battery, temperature
control unit , environment monitoring unit, sensors, and air-condition or
heat exchanger.
According to specific configuration of a site, the auxiliary equipment is
optional.
Cabinet Cabinet
Boards
inside the
cabinet
For example, the timing/transmission and management unit (TMU), the
transceiver unit (TRX), and the combiner and divider unit (CDU)
Cables Fibers, trunk transmission cables, signal cables, power cables, monitoring
cables, alarm cables, and sensor cables
This manual describes the cabinet and boards inside the cabinet. For antenna system, refer to the
M900/M1800 BTS3X Series Base Transceiver Station Installation Manual - Antenna Feeder Installation.
For cables, refer to the "Installing Cables" in the M900/M1800 BTS3X Series Base Transceiver Station
Installation Manual - Cabinet Installation.

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual 2 Cabinet
Issue 01 (2006-11-18) Huawei Technologies Proprietary 2-1
2 Cabinet
About This Chapter
The following table lists the contents of this chapter.
Title Description
2.1 Cabinet Configuration Describes the cabinet configuration of the BTS3X.
2.2 Functional Subsystem Describes the common subsystem, signal processing
subsystem, and antenna feeder subsystem.
2.3 Technical Specifications Describes the technical specifications of the BTS3X
cabinet, such as dimension, weight, power supply, and
power consumption.

2 Cabinet
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
2-2 Huawei Technologies Proprietary Issue 01 (2006-11-18)
2.1 Cabinet Configuration
This section describes the typical single cabinet configurations of the BTS30, the BTS312, the
BTS3006A, and the BTS3012A. The BTS3X uses modular RF structure. It can be configured
flexibly in practice.
2.1.1 BTS30
Figure 2-1shows the typical configuration of the BTS30.
The full configuration of the BTS30 is as follows:
!Three CDUs
!Six TRXs
!Four power supply units (PSUs)
!One power monitor unit (PMU)
!Two timing, transmission, and management units (TMUs)
!One transmission extension power supply unit (TES)
!One transmission extension unit (TEU)

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual 2 Cabinet
Issue 01 (2006-11-18) Huawei Technologies Proprietary 2-3
Figure 2-1 Typical configuration of the BTS30
T
M
U
T
M
U
T
E
S
T
E
U
P
S
U
P
S
U
P
S
U
P
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P
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U
C
D
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D
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U
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T
R
X
T
R
X
T
R
X
T
R
X
T
R
X
开关
Fan
Switch Box
Air Inlet
2.1.2 BTS312
Figure 2-2 shows the typical configuration of the BTS312
The full configuration of the BTS312 is as follows:
!Six CDUs
!12 TRXs
!Six PSUs
!One PMU
!Two TMUs
!One TES
!Two TEUs

2 Cabinet
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
2-4 Huawei Technologies Proprietary Issue 01 (2006-11-18)
Figure 2-2 Typical configuration of the BTS312
Switch Box
Air Trough
Fan
FanFan
T
R
X
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R
X
T
R
X
T
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X
C
D
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C
D
U
T
R
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T
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T
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T
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T
R
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T
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C
D
U
C
D
U
U
T
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X
T
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T
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C
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Air Inlet
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UP
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P
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T
E
S
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E
U
T
E
U
2.1.3 BTS3006A
Figure 2-3 shows the typical configuration of the BTS3006A.
The configuration of the BTS312 can be as follows:
!Three CDUs
!Six TRXs
!Five PSUs
!One PMU
!One TCU

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual 2 Cabinet
Issue 01 (2006-11-18) Huawei Technologies Proprietary 2-5
!One TMU
!One Abis bypass board (ABB)
!Some auxiliary equipment, including the transmission equipment, the power lightning-
protection filter box, the AC/DC power distribution box, the EMUA and the TSU.
Figure 2-3 Typical configuration of the BTS3006A
T
S
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E
M
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A
C
D
U
0
C
D
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1
C
D
U
2
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PMU
PSU 0
PSU1
2
3
4
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A
B
B
Air inlet
E
M
U
S
P
D
PE
Transmission
device subrack
Switch box
Cable inlet
Cable inlet
Fan
distribution subrack
AC power
Fuse
AC lightning
protection subrack
E1 lightning
protection
subrack
PSU
PSU
PSU
AC power
distribution
subrack
maintenance
transfer
board
The BTS3006A can also be configured with a large-capacity extended battery cabinet. The
cabinet can hold 12 batteries with nominal voltage of 2 V.
Figure 2-4 shows the appearance of the storage battery cabinet.

2 Cabinet
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
2-6 Huawei Technologies Proprietary Issue 01 (2006-11-18)
Figure 2-4 Storage battery cabinet without front door
2.1.4 BTS3012A
Figure 2-5 shows the typical configuration of the BTS3006A.
The full configuration of the BTS3012A is as follows:
!Six CDUs
!12 TRXs
!Six PSUs
!One PMU
!One TCU
!One TMU
!One ABB
!Two TEUs
!Some auxiliary equipment, including the transmission equipment, the power lightning-
protection filter box that is at the back of the cabinet, the AC/DC power distribution box,
the EMUA, the TSU, and the built-in storage battery box.

M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual 2 Cabinet
Issue 01 (2006-11-18) Huawei Technologies Proprietary 2-7
Figure 2-5 Typical configuration of the BTS3012A
FAN
FAN
E
M
U
AC
D
U
C
D
U
C
D
U
C
D
U
C
D
U
C
D
U
T
R
X
T
R
X
T
R
X
T
R
X
T
R
X
T
R
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T
R
X
T
R
X
T
R
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T
R
X
T
R
X
T
R
X
P
S
U
P
S
U
T
S
U
E1 lightning
protection
subrack
AC power
distribution
subrack
DC power
distribution
subrack
Battery
Cabin
T
C
U
T
M
UA
B
BFAN FAN
Cable
Inlet
Cable
Inlet
Switch Box
P
M
U
P
S
U
P
S
U
P
S
U
P
S
U
P
S
U
Transmission
device subrack
The BTS3012A can also be configured with a large-capacity extended storage battery cabinet.
The cabinet can hold 12 or 24 batteries with nominal voltage of 2 V.
Figure 2-4 shows the appearance of the storage battery cabinet.
2.2 Functional Subsystem
2.2.1 Overview
Table 2-1 shows the composition and functions of each functional subsystem of the BTS3X.

2 Cabinet
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
2-8 Huawei Technologies Proprietary Issue 01 (2006-11-18)
Table 2-1 Composition and functions of each functional subsystem of the BTS3X
Functional
Subsystem Composition Function
TMU Provides the timing, transmission, and management functions for
the BTS.
TDU Transfers the clock signals received from the TMU and other
signals to other units.
ASU Completes the photoelectric conversion, provides E1 port and
self-rate cross connection between E1s.
PAT Realize order communication with local transmission equipment,
far end photoelectric conversion, multiplexing and demultiplexing
of data, remote delay control, and far end delay control and
ranging.
TES Provides power suppliers for the TEU and transfers
communication.
ABB Provides the Abis bypass, relays the BTS transmission, and
provides the transmission trunk loopback.
ABA Aids the ABB to communicate with the TMU.
PSU Provides the system with DC power supply.
PMU Manages the power supply and collects alarms.
FMU Manages and controls the fan in the fan box to ensure good heat
dissipation of the BTS.
EMU Monitors the environment inside the cabinet and collects alarm
information.
EMUA Monitors the environment outside the cabinet and collects alarm
information.
Common
Subsystem
SPD Protect the power supply system from lightning.
TRX Supports multiple frequency bands, receives the management and
configuration information sent by the TMU, and reports its own
status and alarm information.
PBU Enhance the effective transmission power of the antenna to
enlarge the coverage area of the BTS.
CDU Completes the duplexing of the reception and transmission
signals, filters and combines transmission signals, filters,
amplifies low noise, combines the receiving signals, and feeds the
TMA.
Signal
Processing
Subsystem
ECDU Provides similar functions with that provided by the CDU.
The difference between the CDU and the ECDU is that: a signal
port of the ECDU supports the maximum input power of 100 W,
but the CDU support the maximum input power of 60 W.