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4Boards and Modules of the BTS3012AEAbout This Chapter
The BTS3012AE boards are the DTMU, DATU, DCSU, DCCU, DCMB, DELU, DMLU,
DGLU, NPMI, DSCB, and DTRB. The BTS3012AE modules are the DTRU, DCOM, DDPU,
DFCU, DFCB, DPMU, PSU, and fan box.
4.1 List of the BTS3012AE Boards and Modules (AC)
The BTS3012AE boards are the DTMU, DATU, DCSU, DCCU, DCMB, DELU, DMLU,
DGLU, NPMI, DSCB, and DTRB. The BTS3012AE modules are the DTRU, DCOM, DDPU,
DFCU, DFCB, DPMU, PSU, and fan box.
4.2 DATUThe Antenna and TMA Control Unit for DTRU BTS (DATU) shares the slots with the DEMU.
The DATU isan optional board. A maximum of two DATUs can be configured.
4.3 DCCU
The Cable Connection Unit for DTRU BTS (DCCU) is placed in slot 6 of the common subrack.
The DCCU ismandatory. A maximum of one DCCU can be configured.
4.4 DCMB
The Common Module Backplane for DTRU BTS (DCMB) is configured in the common subrack
of the BTS3012/BTS3012AE cabinet. The DCMB is mandatory. There are nine slots on the
board.
4.5 DCOMThe Combining Unit for DTRU BTS (DCOM) is placed in the DAFU subrack. It can be inserted
in the DAFU subrack with the DDPU. The DCOM is optional and up to three DCOMs can be
configured. The precondition for configuring the DCOM is that the wideband combination
function in the DTRU must be used when there is an additional requirements for the combination
of signals.
4.6 DCSU
The Combined cabinet Signal connection Unit for DTRU BTS (DCSU) is placed in slot 5 of the
common subrack. The DCSU is a mandatory board. Only one DCSU can be configured.
4.7 DDPU
The Dual-Duplexer Unit for DTRU BTS (DDPU) is configured in the DAFU subrack with theDCOM. The DDPU is an optional module. You can choose to configure DDPU or DFCU.
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Generally, three DDPUs are configured. If the DCOM is not configured, a maximum of six
DDPUs can be configured.
4.8 DELU
The E1 Signal Lightning-Protection Card for DTRU BTS (DELU) is installed in the signal
lightning protection subrack. It is configured in slot 0 or 2 (from bottom to top) of the DSCB.The DELU is mandatory. A maximum of two DELUs can be configured.
4.9 DFCB
The Filter Combiner Unit for DTRU BTS (DFCB) is located in the DAFU subrack of the RF
front-end subsystem. It is an optional module. The BTS3012/BTS3012AE can be configured
with the DDPU or the DFCU/DFCB.
4.10 DFCU
The Filter Combiner Unit for DTRU BTS (DFCU) is located in the DAFU subrack of the RF
front-end subsystem. TheDFCU is optional. The BTS3012/BTS3012AE can be configured with
the DDPU or the DFCU.
4.11 DGLUThe Combined Group Signal Lightning-Protection Unit for DTRU (DGLU) is installed in the
signal lightning protection subrack. The DGLU is optional. Only one DGLU can be configured.
4.12 DMLU
The Monitor signal Lightning-protection Unit for DTRU BTS (DMLU) is installed in slot 1 on
the DSCB in the signal lightning protection subrack. The DMLU is optional. Only one DMLU
can be configured.
4.13 DSCB
The Cabinet Signal Connection Backboard (DSCB) is installed in the lightning protection
subrack. It has three slots. Slot 0 holds only the DELU. Slot 1 holds the DGLU or the DMLU.
Slots 2 holds the DGLU or the DELU.
4.14 DTMU
The Transmission/Timing/Management Unit for DTRU BTS (DTMU) is an entity for basic
transmission and control in the BTS3012. It works as a main controller. The DTMU is a
mandatory module. It is installed in slots 1 and 2 of the common subrack.
4.15 DTRB
The Double-Transceiver Unit Backplane (DTRB) is placed in the DTRU subrack. The DTRB
provides six slots to house the DTRUs.
4.16 DTRU
The Double-Transceiver Unit (DTRU) is placed in the double-transceiver subsystem of the BTS.
One DTRU consists of two TRXs.
4.17 DPMU
The Power and Environment Monitoring Unit for DTRU BTS (DPMU) is installed in the power
subrack of the BTS3012AE cabinet.
4.18 NPMI
The NodeB Power Monitor unit Interface Board (NPMI) is installed on the top of the
BTS3012AE cabinet.
4.19 PSU (AC)
The Power Supply Unit (PSU) is installed in the power subrack of the BTS3012AE cabinet.
4.20 Fan Box
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The fan box forms a loop with the air inlet box to provide forced ventilation and dissipation for
the common subrack, DTRU subrack, and DAFU subrack.
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4.1 List of the BTS3012AE Boards and Modules (AC)
The BTS3012AE boards are the DTMU, DATU, DCSU, DCCU, DCMB, DELU, DMLU,
DGLU, NPMI, DSCB, and DTRB. The BTS3012AE modules are the DTRU, DCOM, DDPU,
DFCU, DFCB, DPMU, PSU, and fan box.
Table 4-1lists the boards and modules of the BTS3012AE.
Table 4-1Boards and modules of the BTS3012AE
Subrack Board/Module Full Name ConfigurationQuantity of a SingleCabinet
Full
Configuration
Maximu
mConfiguration
Common
subrack
DTMU Transmission/Timing/
Management Unit for
DTRU BTS
2 1
DATU Antenna and TMA
Control Unit for DTRU
BTS
2 0
DCSU Combined cabinet
Signal connection Unitfor DTRU BTS
1 1
DCCU Cable Connection Unit
for DTRU BTS
1 1
DCMB Common Module
Backplane for DTRU
BTS
1 1
Signal
lightning
protection
subrack
DELU E1 Signal Lightning-
Protection Unit for
DTRU BTS
3 1
DMLU Monitor Signal
Lightning-Protection
Unit for DTRU BTS
1 0
DGLU Combined Group
Signal Lightning-
Protection Unit for
DTRU
1 0
DTRU subrackDTRU Double-Transceiver
Unit
6 1
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Subrack Board/Module Full Name ConfigurationQuantity of a SingleCabinet
FullConfiguration
MaximumConfiguration
DTRB Double-Transceiver
Unit Backplane
1 1
DAFU subrack
DCOM Combining Unit for
DTRU BTS
3 0
DDPU Dual-Duplexer Unit for
DTRU BTS
6 0
DFCU Filter Combiner Unit
for DTRU BTS
3 0
DFCB Filter Combiner Unit
for DTRU BTS
1 0
Power
subsystem
DPMU Power and
Environment
Monitoring Unit for
DTRU BTS
1 1
PSU Power Supply Unit 7 1
Fan subrack Fan box Fan Box 1 1
-NPMI NodeB Power Monitor
unit Interface Board
1 1
4.2 DATU
The Antenna and TMA Control Unit forDTRU BTS (DATU) shares the slots with the DEMU.
The DATU is an optional board. A maximum of two DATUs can be configured.
4.2.1 Functions of the DATUThis part describes the functions of the DATU.
4.2.2 Working Environment of the DATU
This part describes the working environment of the DATU.
4.2.3 LEDs and Ports on the DATU
This part describes the LEDs and ports on the DATU panel. The three LEDS on the DATU panel
indicate the working status of the DATU.Three ports on the DATU panel provide power for the
TMA, whereas the other three ports provide power for the TMA and transmit control signals for
the RET antenna.
4.2.4 DIP Switches on the DATU
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This part describes the DIP switches on the DATU. There are three DIP switches on the DATU:
SW1, SW2, and SW3. SW1 enables the loading of single-chip microcomputers in case of
debugging. SW2 to SW3 enable the power supply to the antenna through the feeder.
4.2.5 Specifications for the DATU
This part describes the dimensions, working voltage, power consumption, and weight of theDATU.
4.2.1 Functions of the DATU
This part describes the functions of the DATU.
The DATU performs the following functions:
l Controls the RET antenna
l Provides power for the TMA over the feeder
l Reports alarms related to the control of the RET antenna
l Monitors the current from the feeder
4.2.2 Working Environment of the DATU
This part describes the working environment of the DATU.
Figure 4-1shows the working environment of the DATU.
Figure 4-1Working environment of the DATU
The DATU receives and processes the signals from the DTMU, and then generates the RET
control signals. The DATU also supplies power for the TMA through the Bias-Tee. The DATU
communicates with the DTMU through CBUS3.
4.2.3 LEDs and Ports on the DATU
This part describes the LEDs and ports on the DATU panel. The three LEDS on the DATU panel
indicate the working status of the DATU. Three ports on the DATU panel provide power for the
TMA, whereas the other three ports provide power for the TMA and transmit control signals for
the RET antenna.
Figure 4-2shows the DATU panel.
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Figure 4-2DATU panel
DATU
RUN
ACT
ALM
ANT0
ANT1
ANT2
ANT3
ANT4
ANT5
Table 4-2describes the LEDs on the DATU panel.
Table 4-2LEDs on the DATU panel
LED Color Description
Status Meaning
RUN Green Indicates
the
working
status of
the board
Slow flash (on
for 2s and off for
2s)
There is power supply but the
communication with the DTMU is
abnormal.
Slow flash (on
for 1s and off for
1s)
The board is running normally and
the communication with the
DTMU is normal.
Off There is no power supply or the
board is faulty.
ACT Green Indicates
the
working
status of
the
services
On The AISG link is normal.
Off The AISG link is abnormal.
Fast flash at
irregular
intervals
There is transmission on the AISG
link.
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LED Color Description
Status Meaning
ALM Red Alarm
LED
On An alarm is generated, such as an
overcurrent alarm.
Off The board is running normally.
Table 4-3describes the ports on the DATU panel.
Table 4-3Ports on the DATU panel
Port Type Function
ANT0 SMA female
connector
Provides power for the RET antenna and
transmits control signals for the RET antenna
ANT1 SMA female
connector
Provides power for the antenna
ANT2 SMA female
connector
Provides power for the RET antenna and
transmits control signals for the RET antenna
ANT3 SMA female
connector
Provides power for the antenna
ANT4 SMA female
connector
Provides power for the RET antenna and
transmits control signals for the RET antenna
ANT5 SMA femaleconnector Provides power for the antenna
4.2.4 DIP Switches on the DATU
This part describes the DIP switches on the DATU. There are three DIP switches on the DATU:
SW1, SW2, and SW3. SW1 enables the loading of single-chip microcomputers in case of
debugging. SW2 to SW3 enable the power supply to the antenna through the feeder.
Figure 4-3shows the layout of the DIP switches on the DATU and their factory settings.
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Figure 4-3Layout of the DIP switches on the DATU
ON
OFF
SW141
4 1
SW3
4 1
SW2
OFF
ON
OFF
ON
Table 4-4describes the settings of the DIP switches on the DATU.
Table 4-4Setting of DIP switches on the DATU
DIP Switch DIP Bit ON/OFF Remarks
SW1 1 ON Enables the single-chip microcomputer
loading in case of debugging
OFF Indicates the setting in normal working
mode
2 ON Enables the single-chip microcomputer
loading in case of debugging
OFF Indicates the setting in normal working
mode
3 ON Indicates the setting in normal workingmode
OFF Enables the single-chip microcomputer
loading in case of debugging
4 ON Indicates the setting in normal working
mode
OFF Enables the single-chip microcomputer
loading in case of debugging
SW2 1 ON No.1 feed output: ON
OFF No.1 feed output: OFF
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DIP Switch DIP Bit ON/OFF Remarks
2 ON No.2 feed output: ON
OFF No.2 feed output: OFF
3 ON No.3 feed output: ON
OFF No.3 feed output: OFF
4 ON No.4 feed output: ON
OFF No.4 feed output: OFF
SW3 1 ON No.5 feed output: ON
OFF No.5 feed output: OFF
2 ON No.6 feed output: ON
OFF No.6 feed output: OFF
3 - Reserved
4 - Reserved
NOTE
The DIP switches on the DATU are set before delivery. There is no need to set them on site.
4.2.5 Specificationsfor the DATU
This part describes the dimensions, working voltage, power consumption, and weight of the
DATU.
Table 4-5describes the specifications for the DATU.
Table 4-5Specifications for the DATU
Item Specification
Dimension Dimension of the PCB (length x width x height): 280.0 mm x 233.4
mm x 2.0 mm
Dimension of the front panel (length x width): 261.0 mm x 30.5 mm
Working voltage 48 V power input
Power consumption
(heat consumption)
Maximum power consumption: 72 W
Weight 0.6 kg
4.3 DCCU
The Cable Connection Unit for DTRU BTS (DCCU) is placed in slot 6 of the common subrack.The DCCU is mandatory. A maximum of one DCCU can be configured.
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4.3.1 Functions of the DCCU
This part describes the functions of the DCCU.
4.3.2 Working Principles of the DCCU
This part describes the working principles of the DCCU. The DCCU consists of the signaltransfer unit and the EMI filtering unit.
4.3.3 Ports on the DCCU
This part describes the ports on the DCCU panel. There are four ports on the DCCU: TRAN,
To_FAN, TO_TOP1, and POWER.
4.3.4 Specifications for the DCCU
This part describes the dimensions and weight of the DCCU.
4.3.1 Functions of the DCCU
This part describes the functions of the DCCU.
The DCCU performs the following functions:
l Transfers E1 signals
l Transfers the control signals for the fans
l Transfers the clock signals from the DAFU subrack
l Processes the power inputs through the EMI filter, and then transmits the power to the
common subrack
4.3.2 Working Principles of the DCCU
This part describes the working principles of the DCCU. The DCCU consists of the signal
transfer unit and the EMI filtering unit.
Figure 4-4shows the working principles of the DCCU.
Figure 4-4Working principles of the DCCU
Signal transfer unit
DCCU
EMI filtering unit
DCMB
-48V
NFCB
DCTB
NOTE
The configuration of the DCTB in Figure 4-4shows that this is a BTS3012 cabinet. The BTS3012AE uses
the DSCBinstead of the DCTB.
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Signal Transfer Unit
The signals from the DCMB are transmitted to the DCCU through three 2 mm connectors. Then,
these signals are transmitted to the following parts through the connectors on the front panel of
the DCCU:
l Fan subrack and the DCTB on the set-on-top subrack of the BTS3012
l Fan subrack and the DSCB of the BTS3012AE
EMI Filtering Unit
The 48 V power flows through the EMI filter and then out to the DCMB for the use of other
boards in the common subrack.
4.3.3 Ports on the DCCU
This part describes the ports on the DCCU panel. There are four ports on the DCCU: TRAN,To_FAN, TO_TOP1, and POWER.
Figure 4-5shows the DCCU panel.
Figure 4-5DCCU panel
POWER
DCCU
To_FAN
TO_TOP1
TRAN
Table 4-6describes the ports on the DCCU panel.
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Table 4-6Ports on the DCCU panel
Port Type Description
TRAN MD64 female
connector
Imports E1 signals
To_FAN DB26 female
connector
Connects to the fan box through cables
TO_TOP1 MD64 female
connector
Connects to the DCTB in the set-on-top
subrack of the BTS3012 cabinet through cables
Connects to the DSCB of the BTS3012AE
through cables
POWER 3V3 power connector Exports power to the common subrack
4.3.4 Specificationsfor the DCCU
This part describes the dimensions and weight of the DCCU.
Table 4-7describes the specifications for the DCCU.
Table 4-7Specifications for the DCCU
Item Specification
Dimension Dimension of the PCB (length x width x height): 280.0 mm x 233.4
mm x 2.0 mm
Dimension of the front panel (length x width): 261.0 mm x 25.4 mm
Weight 0.7 kg
4.4 DCMB
The Common Module Backplane for DTRU BTS (DCMB) is configured in the common subrack
of the BTS3012/BTS3012AE cabinet. The DCMB is mandatory. There are nine slots on the
board.
4.4.1 Functions of the DCMB
This part describes the functions of the DCMB. The DCMB provides power and signal circuits
for the boards in the common subrack. The DCMB transmits signals from the boards in the
common subrack to the DCCU. The ports on the DCCU then transmit the signals to the boards
in other subracks.
4.4.2 Specifications for the DCMB
This part describes the physical dimensions for the DCMB.
4.4.1 Functions of the DCMB
This part describes the functions of the DCMB. The DCMB provides power and signal circuitsfor the boards in the common subrack. The DCMB transmits signals from the boards in the
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common subrack to the DCCU. The ports on the DCCU then transmit the signals to the boards
in other subracks.
The DCMB performs the following functions:
l
Provides signal circuits for connecting the boards in the common subrackl Provides 48 V power circuits for the boards in the common subrack
4.4.2 Specifications for the DCMB
This part describes the physical dimensions for the DCMB.
Table 4-8describes the specifications for the DCMB.
Table 4-8Specifications for the DCMB
Item Specification
Dimension Dimension of the PCB (length x width x height): 259.3 mm x 246.0 mm
x 3.0 mm
Dimension of the front panel (length x width): The DCMB is a
backplane and has no front panel.
4.5 DCOM
The Combining Unit for DTRU BTS (DCOM) is placed in the DAFU subrack. It can be inserted
in the DAFUsubrack with the DDPU. The DCOM is optional and up to three DCOMs can be
configured. The precondition for configuring the DCOM is that the wideband combinationfunction in the DTRU must be used when there is an additional requirements for the combination
of signals.
4.5.1 Functions of the DCOM
This part describes the functions of the DCOM. The DCOM combines two routes of TX signals
from the DTRU, and then sends them to the DDPU.
4.5.2 Working Environment of the DCOM
This part describes the working environment of the DCOM. The DCOM receives two routes of
DL signals from the DTRU and combines them into one route. Then, the DCOM transmits the
combined signals to the DDPU, which sends the signals to the antenna for transmission.
4.5.3 Working Principles of the DCOM
This part describes working principles of the DCOM. The DCOM consists of a 3 dB electrical
bridge and a load of high power.
4.5.4 Ports on the DCOM
This parts describes the ports on the DCOM panel. There are four ports on the DCOM:
ONSHELL, TX-COM, TX1, and TX2.
4.5.5 Specifications for the DCOM
This part describes the dimensions and weight of the DCOM.
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4.5.1 Functions of the DCOM
This part describes the functions of the DCOM. The DCOM combines two routes of TX signals
from the DTRU, and then sends them to the DDPU.
4.5.2 Working Environment of the DCOM
This part describes the working environment of the DCOM. The DCOM receives two routes of
DL signals from the DTRU and combines them into one route. Then, the DCOM transmits the
combined signals to the DDPU, which sends the signals to the antenna for transmission.
Figure 4-6shows the working environment of the DCOM.
Figure 4-6Working environment of the DCOM
DTRUCBUS
DBUS
DTRU
TMA TMAMS
TBUSDCOM DDPU
DAFU
FH_BUS
DBUS/TBUS/CBUS
4.5.3 Working Principles of the DCOM
This part describes working principles of the DCOM. The DCOM consists of a 3 dB electrical
bridge and a load of high power.
Figure 4-7shows the working principles of the DCOM.
Figure 4-7Working principles of the DCOM
3-dB electrical bridge
TX1
TX2
TX1+TX2
Load of high power
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3 dB Electrical Bridge
It combines two routes of RF TX signals into one route.
Load of High PowerIt matches the 3 dB electrical bridge.
4.5.4 Ports on the DCOM
This parts describes the ports on the DCOM panel. There are four ports on the DCOM:
ONSHELL, TX-COM, TX1, and TX2.
Figure 4-8shows the DCOM panel.
Figure 4-8DCOM panel
DCOM
TX-COM
TX2
TX1
ONSHELL
Table 4-9describes the ports on the DCOM panel.
Table 4-9Ports on the DCOM panel
Port Type Description
ONSHELL DB26 female
connector
Exports the in-position signals of the DCOMs to
the DCTB of the BTS3012
Exports the in-position signals of the DCOMs to
the DSCB of the BTS3012AE
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Port Type Description
TX-COM N female connector Exports the combined signals to the DDPU
TX1 N female connector Imports the TX signals from the DTRU
TX2 N female connector Imports the TX signals from the DTRU
4.5.5 Specifications for the DCOM
This part describes the dimensions and weight of the DCOM.
Table 4-10describes the specifications for the DCOM.
Table 4-10Specifications for the DCOM
Item Specification
Dimension Dimension of the front panel (length x width): 383.6 mm x 70.6 mm
Weight 3.2 kg
4.6 DCSU
The Combined cabinet Signal connection Unit for DTRU BTS (DCSU) is placed in slot 5 of the
common subrack. The DCSU is a mandatory board. Only one DCSU can be configured.
4.6.1 Functions of the DCSU
This part describes the functions of the DCSU.
4.6.2 Ports on the DCSU
This part describes the ports on the DCSU panel. There are four ports on the DCSU panel:
CC_OUT, CC_IN, TO_DTRB, and TOP2.
4.6.3 DIP Switches on the DCSU
This part describes the DIP switches on the DCSU. There are 14 DIP switches on the DCSU.
4.6.4 Specifications for the DCSU
This part describes the dimensions and weight of the DCSU.
4.6.1 Functions of the DCSU
This part describes the functions of the DCSU.
The DCSU performs the following functions:
l Transmits clock signals, data signals, and control signals between the main cabinet and the
extension cabinet
l Transmits the clock signals, data signals, and control signals from the DTMU to the DTRU
l Transmits the in-position signals of the DCOM, DDPU, or DFCU in the DAFU subrack to
the DCMB
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4.6.2 Ports on the DCSU
This part describes the ports on the DCSU panel. There are four ports on the DCSU panel:
CC_OUT, CC_IN, TO_DTRB, and TOP2.
Figure 4-9shows the DCSU panel.
Figure 4-9DCSU panel
CC_IN
CC_OUT
TO_DTRB
TOP2
DCSU
Table 4-11describes the ports on the DCSU panel.
Table 4-11Ports on the DCSU panel
Silk-Screen Type Remarks
CC_OUT MD64female
connector
Transmits signals to the other cabinet
CC_IN MD64
female
connector
Receives signals from the other cabinet
TO_DTRB MD64
female
connector
Connects to the DTRB through cables
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Silk-Screen Type Remarks
TOP2 DB26
female
connector
Connects to the DCTB in the set-on-top subrack of the
BTS3012 cabinet through cables
Connects to the DSCB of the BTS3012AE through cables
4.6.3 DIP Switches on the DCSU
This part describes the DIP switches on the DCSU. There are 14 DIP switches on the DCSU.
Figure 4-10shows the layout of the DIP switches on the DCSU and their initial settings.
Figure 4-10Layout of the DIP switches on the DCSU
ON
OFF
SW6SW7
1 4 1 4
SW9
1 4 1 4
SW10
SW8
1 4
ON
OFF
1 4
1 4
1 4
1 4
1 4
1 4
SW5
SW4
SW3
SW2
SW11
SW1
ON
OFF
ON
OFF
1 4
1 4
1 4
SW14
SW13
SW12
ON
OFF
Table 4-12describes the settings of SW1, which is used to set the main cabinet in the main
cabinet group. Table 4-13describes the settings of SW11, which is used to set the matchingterminal.
The settings of SW11 are as follows:
l When a single cabinet is used, all the DIP bits of SW11 should be set to ON.
l When two cabinet groups are used, all the DIP bits of SW11 for the cabinets should be set
to ON.
l When two cabinet groups are used, all the DIP bits of SW11 for the cabinets should be set
to ON.
l When three cabinet groups are used, the DIP bits of SW11 for the main cabinet in the main
cabinet group should be set to OFF. The other DIP bits of SW11 for other cabinets shouldbe set to ON.
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SW2 to SW5 are used to set the main cabinet and extension cabinet in a cabinet group.
Irrespective of the main cabinet group or extension cabinet group, the DIP bits of SW2 to SW5
for the main cabinet should be set to ON and the DIP bits for the extension cabinet should be
set to OFF. Table 4-14describes the settings of the DIP switches.
SW6 and SW7 are used to set E1 impedance. Table 4-15describes the settings of the DIPswitches.
SW8 is used to set the cabinet number. In a cabinet group, you need to set SW8 for the main
cabinet. You can use the default settings for the extension cabinets, that is, all the extension
cabinets should be set to ON. Table 4-16describes the settings of the DIP switches.
SW9 and SW10 are used to set the cabinet type. Table 4-17describes the setting of the DIP
switches.
Table 4-12Settings of SW1
SW1 Description
All ON Specifies the main cabinet of the main cabinet group
All OFF Not specified
Table 4-13Settings of SW11
SW11 Description
All ON CBUS1 terminal match
All OFF CBUS1 no terminal match
Table 4-14Settings of SW2SW5
SW2SW5 Description
All ON Specifies the main cabinet in the combined cabinets
All OFF Specifies the extension cabinet in the combined cabinets
Table 4-15Settings of SW6 and SW7
DIPSwitch
DIPBit
ON/OFF Description
SW6 1 ON Impedance for the first E1 cable: 75 ohms
OFF Impedance for the first E1 cable: 120 ohms
2 ON Impedance for the second E1 cable: 75
ohms
OFF Impedance for the second E1 cable: 120
ohms
3 ON Impedance for the third E1 cable: 75 ohms
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DIPSwitch
DIPBit
ON/OFF Description
OFF Impedance for the third E1 cable: 120 ohms
4 ON Impedance for the fourth E1 cable: 75 ohms
OFF Impedance for the fourth E1 cable: 120
ohms
SW7 1 ON Impedance for the fifth E1 cable: 75 ohms
OFF Impedance for the fifth E1 cable: 120 ohms
2 ON Impedance for the sixth E1 cable: 75 ohms
OFF Impedance for the sixth E1 cable: 120 ohms
3 ON Impedance for the seventh E1 cable: 75ohms
OFF Impedance for the seventh E1 cable: 120
ohms
4 ON Impedance for the eighth E1 cable: 75 ohms
OFF Impedance for the eighth E1 cable: 120
ohms
Table 4-16Settings of SW8
DIP Bits of SW8 Description
1 2 3 4
ON ON ON ON Main cabinet of the
main cabinet group
OFF OFF ON ON Main cabinet in
extension cabinet
group 1
ON OFF OFF ON Main cabinet in
extension cabinet
group 2
Table 4-17Settings of SW9 and SW10
DIP Bits of SW9 DIP Bits of SW10 Description
1 2-4 1-4
ON ON ON The cabinet type is
BTS3012.
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DIP Bits of SW9 DIP Bits of SW10 Description
1 2-4 1-4
OFF ON ON The cabinet type is
BTS3012AE.
Others Undefined
4.6.4 Specifications for the DCSU
This part describes the dimensions and weight of the DCSU.
Table 4-18describes the specifications for the DCSU.
Table 4-18Specifications for the DCSU
Item Specification
Dimension Dimension of the PCB (length x width x height): 280.0 mm x 233.4 mm x
2.0 mm
Dimension of the front panel (length x width): 261.0 mm x 25.4 mm
Weight 0.7 kg
4.7 DDPU
The Dual-Duplexer Unit for DTRU BTS (DDPU) is configured in the DAFU subrack with theDCOM. The DDPU is an optional module. You can choose to configure DDPU or DFCU.
Generally, three DDPUs are configured. If the DCOM is not configured, a maximum of six
DDPUs can be configured.
4.7.1 Functions of the DDPU
This part describes the functions of the DDPU.
4.7.2 Working Environment of the DDPU
This part describes the working environment of the DDPU.
4.7.3 Working Principles of the DDPU
This part describes the working principles of the DDPU. The DDPU consists of the DDLC,
duplexer, and power coupler.
4.7.4 LEDs and Ports on the DDPU
This part describes the LEDs and ports on the DDPU panel. The two LEDs on the DDPU panel
indicate the working status of the DDPU. There are 14 ports on the DDPU. These ports include
antenna ports, TX ports, RX ports, communication port, and power port.
4.7.5 Specifications for the DDPU
This part describes the dimensions, working voltage, power consumption, and weight of the
DDPU.
4.7.1 Functions of the DDPU
This part describes the functions of the DDPU.
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The DDPU performs the following functions:
l Provides lightning protection through the ANT port
l Detects VSWR alarms in the antenna system
l Receives the gain control signals for the low noise amplifier
l Transmits multiple routes of RF signals from the transmitter to the antenna
l Receives signals from the antenna, amplifies and quarters these signals, and then transmits
them to the receiver of the DTRU
4.7.2 Working Environment of the DDPU
This part describes the working environment of the DDPU.
Figure 4-11shows the working environment of the DDPU.
Figure 4-11Working environment of the DDPU
DTRU
DBUS
TBUSDDPU
CBUS3
CBUS
DTRU DDPU
CBUS3
TMA TMAMS
MS
TMA TMA
Bias-Tee
Bias-Tee
Bias-Tee
Bias-Tee
DBUS/TBUS/CBUS
The working environment of the DDPU is as follows:
l The DDPU receives the UL signals from the antenna, filters and amplifies them, and then
sends them to the DTRU for demodulation.
l The DDPU also receives the DL signals from the DTRU, filters them, and then sends them
to the antenna for transmission.
4.7.3 Working Principles of the DDPU
This part describes the working principles of the DDPU. The DDPU consists of the DDLC,
duplexer, and power coupler.
Figure 4-12shows the working principles of the DDPU.
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Figure 4-12Working principles of the DDPU
DDLC
DDPU
DuplexerTX1
TX/RX ANTA
RX1A
RX2A
RX3A
RX4A
BUS
-48 V DC
DuplexerTX2
RX1B
RX2B
RX3B
RX4B
TX/RX ANTB
Power coupler
Power coupler
DDLC
It receives signals from the antenna, amplifies and quarters these signals, and then sends them
to the DTRU. It also features fault self-detection.
Duplexer
The duplexer consists of the receive filer and the transmit receiver. The duplexer filters the
received signals and the signals that are to be transmitted.
Power Coupler
It extracts signals for the DDLC to perform VSWR detecting.
4.7.4 LEDs and Ports on the DDPU
This part describes the LEDs and ports on the DDPU panel. The two LEDs on the DDPU panel
indicate the working status of the DDPU. There are 14 ports on the DDPU. These ports include
antenna ports, TX ports, RX ports, communication port, and power port.
Figure 4-13shows the DDPU panel.
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Figure 4-13DDPU panel
RUN
ALM
VSWRA
RXA1
RXA2
RXA3
RXA4
RXB1
RXB2
RXB3
RXB4
DDPU
TXA
TXB
COM
POWER
VSWRB
ANTA
ANTB
Table 4-19describes the LEDs on the DDPU panel.
Table 4-19LEDs on the DDPU panel
LED Color Description
Status Meaning
RUN Green Indicates
the
working
status ofthe
DDPU
On There is power supply. However, the
module is faulty.
Off There is no power supply or the module
is faulty.
Slow flash (on
for 1s and off
for 1s)
The module works normally.
Fast flash (on
for 0.2s and off
for 0.2s)
The DTMU is sending configuration
parameters to the DDPU or the DDPU
is loading software programs.
ALM Red Alarm
indicator
On (flash at
high frequency)
Alarms (including VSWR alarm),
indicating that there are faults
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LED Color Description
Status Meaning
Off No alarm
Slow flash (onfor 1s and off
for 1s)
The DDPM is starting or loading thelatest application.
VSWRA Red Channel
A VSWR
alarm
indicator
Slow flash (on
for 1s and off
for 1s)
Channel A VWSR alarm
On Critical channel A VSWR alarm
Off No channel A VSWR alarm
VSWRB Red Channel
B VSWRalarm
indicator
Slow flash (on
for 1s and offfor 1s)
Channel B VWSR alarm
On Critical channel B VSWR alarm
Off No channel B VSWR alarm
Table 4-20describes the ports on the DDPU panel.
Table 4-20Ports on the DDPU panel
Port Type Function
COM DB26 female connector Receives control signals, communication signals,
clock signals, and rack number signals from the
DCTB of the BTS3012
Receives control signals, communication signals,
and clock signals from the DSCB of the
BTS3012AE
POWER 3V3 power connector Power input
TXA N female connector l Receives TX signals from the DTRU
l Receives combination signals from the DCOM
TXB N female connector l Receives TX signals from the DTRU
l Receives combination signals from the DCOM
RXA1 SMA female connector Main output port for route 1
RXA2 SMA female connector Main output port for route 2
RXA3 SMA female connector Main output port for route 3
RXA4 SMA female connector Main output port for route 4
RXB1 SMA female connector Diversity output port for route 1
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Port Type Function
RXB2 SMA female connector Diversity output port for route 2
RXB3 SMA female connector Diversity output port for route 3
RXB4 SMA female connector Diversity output port for route 4
ANTA DIN female connector Connects to the indoor 1/2-inch jumper of the
BTS3012 or the BiasTee
Connects to the indoor 1/4-inch jumper of the
BTS3012AE or the BiasTee
ANTB DIN female connector Connects to the indoor 1/2-inch jumper of the
BTS3012 or the BiasTee
Connects to the indoor 1/4-inch jumper of the
BTS3012AE or the BiasTee
4.7.5 Specifications for the DDPU
This part describes the dimensions, working voltage, power consumption, and weight of the
DDPU.
Table 4-21describes the specifications for the DDPU.
Table 4-21Specifications for the DDPU
Item Specification
Dimension Dimension of the front panel (length x width): 383.6 mm x 70.6
mm
Working voltage 48 V power input
Power consumption
(heat consumption)
Maximum power consumption: 8 W
Weight 8.0 kg
4.8 DELUThe E1 Signal Lightning-Protection Card for DTRU BTS (DELU) is installed in the signal
lightning protection subrack. It is configured in slot 0 or 2 (from bottom to top) of the DSCB.
The DELU is mandatory. A maximum of two DELUs can be configured.
4.8.1 Functions of the DELU
One DELU can protect four channels of E1 signals from lightning strikes.
4.8.2 Port on the DELU
The DELU has only one port, used to transmit E1 lightning protection signals.
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4.8.1 Functions of the DELU
One DELU can protect four channels of E1 signals from lightning strikes.
The DELU performs the following functions:
l Protecting four channels of E1 signals from lightning strikes.
l Transmitting E1 signals to the DCCU, through which the signals are sent to the DTMU for
processing
4.8.2 Port on the DELU
The DELU has only one port, used to transmit E1 lightning protection signals.
Table 4-22describes the ports on the DELU.
Table 4-22Port on the DELU
Port Type Description
TR DB25 female
connector
Transmitting E1 lightning protection signals
4.9 DFCB
The Filter Combiner Unit for DTRU BTS (DFCB) is located in the DAFU subrack of the RF
front-end subsystem. It is an optional module. The BTS3012/BTS3012AE can be configured
with the DDPU or the DFCU/DFCB.
4.9.1 Functions of the DFCB
This part describes the functions of the DFCB. The DFCB receives the UL signals from the
antenna, divides the signals, and then sends the signals to the DTRU. It also receives DL signals
from the DTRU, filters and amplifies the signals, and then sends the signals to the antenna. The
DFCB must be connected with the DFCU.
4.9.2 Working environment of the DFCB
This part describes the working environment of the DFCB.
4.9.3 Working Principles of the DFCB
This part describes the working principles of the DFCB. The DFCB consists of the cavities,
duplexer, diversity filter, lower noise amplifier (LNA), control unit, and directional coupler.
4.9.4 LEDs and Ports on the DFCB
This part describes the LEDs and ports on the DFCB panel. The four LEDs on the DFCB panel
indicates the working status of the DFCB and the 29 ports provide signals input and output.
4.9.5 Specifications for the DFCB
This part describes the dimensions, working voltage, power consumption, and weight of the
DFCB.
4.9.1 Functions of the DFCB
This part describes the functions of the DFCB. The DFCB receives the UL signals from theantenna, divides the signals, and then sends the signals to the DTRU. It also receives DL signals
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from the DTRU, filters and amplifies the signals, and then sends the signals to the antenna. The
DFCB must be connected with the DFCU.
The DFCB performs the following functions:
l
Combines one route or two routes of RF TX signals from the transmitter of the DTRU ,and then transmits them to the antenna through a duplexer
l Transmits the received signals from the antenna to the duplexer and LNA (The DFCU also
controls the gain of the amplifier), divides the signals into several routes, and then transmits
them to the receivers of the DTRUs
l Detects the VSWR alarms of the antenna system and provides the function of the VSWR
alarms whose thresholds are adjustable
4.9.2 Working environment of the DFCB
This part describes the working environment of the DFCB.
Figure 4-14shows the working environment of the DFCB.
Figure 4-14Working environment of the DFCB
DTRUDTRU DFCU TMA
DTRUDTRU DFCB TMA
l The DFCB receives the UL signals from the antenna, filters, amplifies, and divides thesignals, and then transmits them to the DTRU for demodulation.
l The DFCB receives the DL signals from the DTRU, filters and combines the signals, and
then sends them to the antenna for transmission.
l The DFCB combines two routes of RF signals and transmits them to the COM-IN port on
the DFCU panel so that the DFCU can combine six routes of RF signals for transmission.
4.9.3 Working Principles of the DFCB
This part describes the working principles of the DFCB. The DFCB consists of the cavities,
duplexer, diversity filter, lower noise amplifier (LNA), control unit, and directional coupler.
Figure 4-15shows the functional structure of the DFCB.
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Figure 4-15Functional structure of the DFCB
COM1TX1
TX2TX3
TX4
DuplexerTX/RX-ANT
TX-DUP
PF-out1PF-out2
PR-out2PR-out1
PR-in1PR-in2
PF-in1
PF-in2
DC-IN -48V
DBUS
HL-OUT
RX2
RX3
RX1
DFCB
Jumper
COM2
Directional
coupler
LNA
Cavity
CavityCavity
Cavity
Control unit
Duplexer
The duplexer consists of a RX filter and a TX filter. The duplexer provides a reliable channel
for both RX signals and TX signals sharing one antenna. This ensures that the strong TX signals
do not affect the weak RX signals.
Cavity
It provides dual two-in-one mechanism to be cascaded with the DFCU.
LNA
The LNA is used to amplify the RX signals from the antenna. The LNA gain is adjustable through
the commands issued by the BTS. The LNA features self-detection through which an alarm is
reported when a fault occurs.
Control Unit
The control unit is used to control the combiners, detect the VSWR alarms, set the signal gain
of the LNA, detect the LNA alarm, and set up the communication between the DFCU and the
BTS.
Directional Coupler
The directional coupler features VSWR detection. The VSWR testing circuit checks the forward/
reverse DL power through the standing-wave detector. The output voltage from the standing-
wave detector are processed and calculated. If the VSWR exceeds a specified threshold, theVSWR alarm is reported.
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4.9.4 LEDs and Ports on the DFCB
This part describes the LEDs and ports on the DFCB panel. The four LEDs on the DFCB panel
indicates the working status of the DFCB and the 29 ports provide signals input and output.
Panel
Figure 4-16shows the DFCB panel.
Figure 4-16DFCB panel
TX1
PF in1TUNING
VSWR
LNA
RUN
PF in2
PF out1
PF out2
PR out1
PR out2
RX6
RX5
RX4
HL-IN
RXD-OUT
HL-OUTCOM2
DBUS
RX3
RX2
RX1
TX3
PR in1
DC-IN-48V PR in2
TX4TX-DUP
EGSM900 DFCB
COM1
RXD-ANT
TX/RX-ANT
LED
Table 4-23describes the LEDs on the DFCB panel.
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Port Type Function
TX2 N female connector DTRU signal input port 2
TX3 N female connector DTRU signal input port 3
TX4 N female connector DTRU signal input port 4
RX1 SMA female connector Main DTRU signal output port 1
RX2 SMA female connector Main DTRU signal output port 2
RX3 SMA female connector Main DTRU signal output port 3
RX4 SMA female connector Diversity DTRU signal output port 1
RX5 SMA female connector Diversity DTRU signal output port 2
RX6 SMA female connector Diversity DTRU signal output port 3
HL-OUT SMA female connector High level output port
HL-IN SMA female connector High level input port
RXD-ANT SMA female connector Diversity receive output port
PR out1 SMA female connector Reverse power sampling output port 1
PR out2 SMA female connector Reverse power sampling output port 2
PF out1 SMA female connector Forward power sampling output port 1
PF out2 SMA female connector Forward power sampling output port 2
PR in1 SMA female connector Reverse power sampling input port 1
PR in2 SMA female connector Reverse power sampling input port 2
PF in1 SMA female connector Forward power sampling input port 1
PF in2 SMA female connector Forward power sampling input port 2
4.9.5 Specifications for the DFCB
This part describes the dimensions, working voltage, power consumption, and weight of the
DFCB.
Table 4-25describes the specifications for the DFCB.
Table 4-25Specifications for the DFCB
Item Specification
Dimension Dimension of the front panel (length x width): 396 mm x 142
mm
Working voltage 48 V power input
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Item Specification
Power consumption (heat
consumption)
Maximum power consumption: 50 W
Weight 20 kg
4.10 DFCU
The Filter Combiner Unit for DTRU BTS (DFCU) is located in the DAFU subrack of the RF
front-end subsystem. The DFCU is optional. The BTS3012/BTS3012AE can be configured with
the DDPU or the DFCU.
4.10.1 Functions of the DFCU
This part describes the functions of the DFCU.
4.10.2 Working Environment of the DFCU
This part describes the working environment of the DFCU.
4.10.3 Working Principles of the DFCU
This part describes the working principles of the DFCU. The DFCU consists of the cavity
combiner, micro-band combiner, duplexer, diversity filter, lower noise amplifier (LNA), control
unit, and directional coupler.
4.10.4 LEDs and Ports on the DFCU
This part describes the LEDs and ports on the DFCU panel. The four LEDs on the DFCU panel
indicates the working status of the DFCU and the 29 ports provide signals input and output.
4.10.5 Specifications for the DFCU
This part describes the dimensions, working voltage, power consumption, and weight of theDFCU.
4.10.1 Functions of the DFCU
This part describes the functions of the DFCU.
The DFCU performs the following functions:
l Transmits multiple routes of RF TX signals from the DTRU transmitter to the antenna
through the duplexer after combination
l Transmits the received signals from the antenna to the duplexer and to the low noise
amplifier (The DFCU also controls the gain of the amplifier), divides the signals into severalroutes, and transmits them to the receivers of the DTRUs
l Provides four-in-one signal combination or six-in-one signal combination once connected
with the DFCB
l Detects the frequencies of the input signals and performs automatic tuning
l Detects the VSWR alarms of the antenna system and provides the function of the VSWR
alarms whose thresholds are adjustable
4.10.2 Working Environment of the DFCU
This part describes the working environment of the DFCU.
Figure 4-17shows the working environment of the DFCU.
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Figure 4-17Working environment of the DFCU
DTRUDTRU DFCU TMA
DTRUDTRU DFCB TMA
l The DFCU receives the UL signals from the antenna, filters, amplifies, and divides the
signals, and then transmits them to the DTRU for demodulation.
l The DFCU receives the DL signals from the DTRU, filters and combines the signals, and
then transmits them to the antenna for transmission.
l The DFCU receives the combined signals from the DFCB, filters the signals, and then
transmits them to the antenna for transmission.
4.10.3 Working Principles of the DFCU
This part describes the working principles of the DFCU. The DFCU consists of the cavity
combiner, micro-band combiner, duplexer, diversity filter, lower noise amplifier (LNA), control
unit, and directional coupler.
Figure 4-18shows the functional structure of the DFCU.
Figure 4-18Functional structure of the DFCU
COM-INTX1
TX2
TX3
TX4
TX/RX-ANT
TX-COM
TX-DUPPF-out1PF-out2
Directional
coupler
Cavity
PR-out2PR-out1
Control unit
PR-in1
PR-in2
PF-in1
PF-in2
DC-IN -48V
DBUS
Diversity filterRXD-ANT
HL-OUT
RX4
RX2RX3
RXD-OUT
LNA
LNA
RX5RX6
HL-IN
RX1
DFCU
Jumper
Cavity
Cavity
Cavity
Micro-band
combiner
Duplexer
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Duplexer
The duplexer consists of a RX filter and a TX filter. The duplexer provides a reliable channel
for both RX signals and TX signals sharing one antenna. This ensures that the strong TX signals
do not affect the weak RX signals.
Cavity
The four cavities combine four routes of signals into two routes, and then transmit the signals
to the micro-band combiner.
Micro-Band Combiner
The micro-band combiner is used to combine two routes of signals from the cavities into one
route for transmission.
LNA
The LNA is used to amplify the RX signals from the antenna. The LNA gain is adjustable through
the commands issued by the BTS. The LNA features self-detection through which an alarm is
reported when a fault occurs.
Diversity Filter
The diversity filter is used to filter the signals from the diversity ports.
Control Unit
The control unit is used to control the combiners, detect the VSWR alarms, set the signal gain
of the LNA, detect the LNA alarm, and set up the communication between the DFCU and the
BTS.
Directional Coupler
The directional coupler features VSWR detection. The VSWR testing circuit checks the forward/
reverse DL power through the standing-wave detector. The output voltage from the standing-
wave detector are processed and calculated. If the VSWR exceeds a specified threshold, the
VSWR alarm is reported.
4.10.4 LEDs and Ports on the DFCU
This part describes the LEDs and ports on the DFCU panel. The four LEDs on the DFCU panel
indicates the working status of the DFCU and the 29 ports provide signals input and output.
Panel
Figure 4-19shows the DFCU panel.
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Figure 4-19DFCU panel
RXD-ANT
TX/RX-ANT
LED
Table 4-26describes the LEDs on the DFCU panel.
Table 4-26LEDs on the DFCU panel
LED Color Remarks Status Meaning
RUN Green Power indicator On There is power
input.
Off There is no power
input.
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LED Color Remarks Status Meaning
VSWR Red VSWR alarm
indicator of TX/
RX_ANT
On There is a level 2
VSWR alarm.
Slow flash (on for1s and off for 1s)
There is a level 1VSWR alarm.
Off There is no VSWR
alarm.
LNA Red LNA alarm
indicator
On There is an LNA
alarm.
Off There is no alarm.
TUNING Red Tuning fail alarm
indicator
On There is a tuning
failure alarm.
Slow flash (on for
1s and off for 1s)
Tuning
Off There is no alarm.
Port
Table 4-27describes the ports on the DFCU panel.
Table 4-27Ports on the DFCU panel
Port Type Remarks
TX/RX-ANT 7/16 DIN female
connector
Antenna port for reception and
transmission
RXD-ANT 7/16 DIN female
connector
Diversity receive antenna port
DBUS DB26 female connector DBUS signal input and output port
DC-IN 48 V 3V3 power connector DC power input port
TX-COM N female connector Combining output port
TX-DUP N female connector Duplexer input port
COM-IN N female connector Extended combining port 2
TX1 N female connector DTRU signal input port 1
TX2 N female connector DTRU signal input port 2
TX3 N female connector DTRU signal input port 3
TX4 N female connector DTRU signal input port 4
RX1 SMA female connector Main DTRU signal output port 1
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Port Type Remarks
RX2 SMA female connector Main DTRU signal output port 2
RX3 SMA female connector Main DTRU signal output port 3
RX4 SMA female connector Diversity DTRU signal output port 1
RX5 SMA female connector Diversity DTRU signal output port 2
RX6 SMA female connector Diversity DTRU signal output port 3
HL-OUT SMA female connector High level output port
HL-IN SMA female connector High level input port
RXD-ANT SMA female connector Diversity receive output port
PR out1 SMA female connector Reverse power sampling output port 1
PR out2 SMA female connector Reverse power sampling output port 2
PF out1 SMA female connector Forward power sampling output port 1
PF out2 SMA female connector Forward power sampling output port 2
PR in1 SMA female connector Reverse power sampling input port 1
PR in2 SMA female connector Reverse power sampling input port 2
PF in1 SMA female connector Forward power sampling input port 1
PF in2 SMA female connector Forward power sampling input port 2
NOTE
The circuit connected to the COM-IN port is an open circuit. When the DFCU is used independently, the
open circuit connects with the RF signal cable, which connects the PR in1 port with the PR out1 port. These
two ports are connected before delivery.
4.10.5 Specifications for the DFCU
This part describes the dimensions, working voltage, power consumption, and weight of the
DFCU.
Table 4-28describes the specifications for the DFCU.
Table 4-28Specifications for the DFCU
Item Specification
Dimension Dimension of the front panel (length x width): 396 mm x 142
mm
Working voltage 48 V power input
Power consumption (heat
consumption)
Maximum power consumption: 50 W
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Item Specification
Weight 20 kg
4.11 DGLU
The Combined Group Signal Lightning-Protection Unit for DTRU (DGLU) is installed in the
signal lightning protection subrack. The DGLU is optional. Only one DGLU can be configured.
4.11.1 Functions of the DGLU
The DGLU protects the clock signals between BTS3012AE cabinet groups from lightning strikes
when the distance between the cabinet groups is 25 meters.
4.11.2 Port on the DGLU
The DGLU has one CKB port, used to connect the clock cable between cabinet groups.
4.11.1 Functions of the DGLU
The DGLU protects the clock signals between BTS3012AE cabinet groups from lightning strikes
when the distance between the cabinet groups is 25 meters.
The DGLU is optional. When the distance between the cabinet groups is 25 meters, the DGLU
is required.
Only one DGLU can be configured. The configuration modes of the DGLU are as follows:
l The DGLU in the main cabinet group is configured in slot 2 on the DSCB.
l The DGLU in the extension cabinet group is configured in slot 1 on the DSCB.
4.11.2 Port on the DGLU
The DGLU has one CKB port, used to connect the clock cable between cabinet groups.
Figure 4-20shows the panel of the DGLU.
Figure 4-20Panel of the DGLU
DGLU
CKB
Table 4-29lists the port on the panel of the DGLU.
Table 4-29Port on the panel of the DGLU
Port Type Description
CKB DB25 female connector Connecting the clock cable
between cabinet groups
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4.12 DMLU
The Monitor signal Lightning-protection Unit for DTRU BTS (DMLU) is installed in slot 1 on
the DSCB in the signal lightning protection subrack. The DMLU is optional. Only one DMLU
can be configured.
4.12.1 Functions of the DMLU
The DMLU protects the Boolean inputs from lightning strikes and provides a serial bus port.
4.12.2 Ports on the DMLU
The DMLU has two ports: the port SW IN/OUT is used to introduce Boolean value signals and
relay signals, and the port EAC is used to connect the external environment alarm box and
transmit signals.
4.12.1 Functions of the DMLUThe DMLU protects the Boolean inputs from lightning strikes and provides a serial bus port.
The DMLU performs the following functions:
l Protecting the eight external Boolean inputs from lightning strikes
l Providing a 2-route 485 serial bus port.
4.12.2 Ports on the DMLU
The DMLU has two ports: the port SW IN/OUT is used to introduce Boolean value signals and
relay signals, and the port EAC is used to connect the external environment alarm box andtransmit signals.
Figure 4-21shows the panel of the DMLU.
Figure 4-21Panel of the DMLU
DMLU
SW IN/OUT EAC
Table 4-30lists the ports on the panel of the DMLU.
Table 4-30Ports on the panel of the DMLU
Silk-Screen Type Description
SW IN/OUT DB44 female
connector
Eight Boolean value inputs
Two relay signal inputs
2-route 485 serial bus port
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Silk-Screen Type Description
EAC DB9 female
connector
Connecting the external environment alarm box and
transmitting signals
4.13 DSCB
The Cabinet Signal Connection Backboard (DSCB) is installed in the lightning protection
subrack. It has three slots. Slot 0 holds only the DELU. Slot 1 holds the DGLU or the DMLU.
Slots 2 holds the DGLU or the DELU.
4.13.1 Functions of the DSCB
The DSCB transfers the signals between the common subrack and other BTS devices. The signals
include clock signals, control signals, data signals, and Boolean value alarm signals.
4.13.2 Ports on the DSCBThe DSCB has 11 ports, connecting to the connectors for the signal cables of boards and the
connectors for the signal cables between combined cabinets and between cabinet groups.
4.13.1 Functions of the DSCB
The DSCB transfers the signals between the common subrack and other BTS devices. The signals
include clock signals, control signals, data signals, and Boolean value alarm signals.
The DSCB performs the following functions:
l Transferring signals between combined cabinets and between cabinet groups. The signals
include clock signals, control signals, data signals, and Boolean value alarm signals.
l Providing the control signals and clock signals for the DDPU or the DFCU
l Transferring the E1 signals from the transmission equipment to the DCCU.
l Transferring the environment monitoring signals to the NPMI
4.13.2 Ports on the DSCB
The DSCB has 11 ports, connecting to the connectors for the signal cables of boards and the
connectors for the signal cables between combined cabinets and between cabinet groups.
Figure 4-22shows the panel of the DSCB.
Figure 4-22Panel of the DSCB
TOS
LAVEMASTER
(FROMD
CSU)
TOP(FROMD
CCU)
TOD
CCU
E1
TOD
CSU
TOP
TO3
GE
1
TOD
AFU
0-2
TOD
AFU
3-5
TOS
LAVECABINET
TOS
LAVEGROUP1
TOS
LAVEGROUP2
TO
NPMI
DMLU/DGLU
DELU 0
DELU 1/DGLU
Table 4-31lists the ports on the panel of the DSCB.
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Table 4-31Ports on the panel of the DSCB
Silk-Screen Type Description
TO SLAVE
MASTER(FROM DCSU)
MD68 female connector Connector for the cable to the
DCSU
TOP (FROM
DCCU)
MD68 female connector Connector for the cable to the
DCCU
TO DCCU E1 MD36 female connector Connector for the E1 cable from
the DCCU
TO NPMI MD36 female connector Connector for the RS485
environment monitoring cable
to the NPMI
TO DCSU TOP MD36 female connector Connector for the cable to theDCSU
TO 3G E1 MD36 female connector Connector for the 3G E1 cable,
reserved
TO DAFU 0-2 MD68 female connector Connector for the cable to
DDPU 0DDPU 2
TO DAFU 3-5 MD68 female connector Connector for the cable to
DDPU3DDPU 5
TO SLAVE
CABINET
MD36 female connector Connector for the signal cable
between combined cabinets
TO SLAVE
GROUP1
MD36 female connector Close connector for signal cable
between cabinet groups
TO SLAVE
GROUP2
MD36 female connector Close connector for signal cable
between cabinet groups
Table 4-32lists the slots on the DSCB.
Table 4-32Slots on the DSCB
Slot Number Board Description
Slot 0 DELU Slot 0 is configured with only the
DELU.
Slot 1 DGLU Slot 1 on the DSCB in the
extension cabinet group is
configured with the DGLU when
the distance between the cabinet
groups is 25 meters.
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Slot Number Board Description
DMLU In the conditions except that
described above, slot 1 on the
DSCB is configured with the
DMLU.
Slot 2 DGLU Slot 2 on the DSCB in the main
cabinet group is configured with
the DGLU when the distance
between the cabinet groups is 2
5 meters.
DELU In the conditions except that
described above, slot 2 is
configured with the DELU.
4.14 DTMU
The Transmission/Timing/Management Unit for DTRU BTS (DTMU) is an entity for basic
transmission and control in the BTS3012. It works as a main controller. The DTMU is a
mandatory module. It is installed in slots 1 and 2 of the common subrack.
4.14.1 Functions of the DTMU
This part describes the functions of the DTMU. The DTMU provides multiple ports to receive
clock signals,power supply, maintenance signals, and external alarm signals. It controls and
manages the entire BTS.
4.14.2 Working Environment of the DTMU
This part describes the working environment of the DTMU. The DTMU is placed in the common
subsystem ofthe BTS. It processes the data signals from the DELC or the optical transmission
equipment, and then transmits the data signals, clock signals, and control signals to the entire
BTS through the buses in the BTS.
4.14.3 Working Principles of the DTMU
This part describes the working principles of the DTMU. The DTMU consists of the BIU, MCU,
and MCK.
4.14.4 LEDs and Ports on the DTMU
This part describes the LEDs and ports on the DTMU panel. The nine ports on the DTMU panel
indicate the working status of the DTMU. Three ports on the DTMU panel provide clockreference for the BTS, whereas the other port provides access for the maintenance equipment.
4.14.5 DIP Switches on the DTMU
This part describes the DIP switches on the DTMU. There are five DIP switches on the DTMU.
Four switches, namely, S4, S5, S6, and S7, specify the grounding for eight E1 routes. The other
switch, S3, is reserved.
4.14.6 Specifications for the DTMU
This part describes the dimensions, working voltage, power consumption, and weight of the
DTMU.
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4.14.1 Functions of the DTMU
This part describes the functions of the DTMU. The DTMU provides multiple ports to receive
clock signals, power supply, maintenance signals, and external alarm signals. It controls and
manages the entire BTS.The DTMU performs the following functions:
l Provides external GPS inputs
l Provides BITS synchronized clock inputs
l Provides backup between the active and standby boards
l Provides a 10 Mbit/s network port for terminal maintenance
l Supports four routes of E1 inputs or eight routes of E1 inputs if required
l Controls, maintains, and operates the BTS
l Downloads software for the BTS
l Provides fault management, configuration management, performance management, and
security management
l Manages the clock access and provides hot backup for the clock units
l Provides backup for the E1 ports and the main control unit
l Supports eight routes of digital alarm inputs, two of them being lightning arrester failure
alarm inputs
l Supports four routes of extended digital control signal outputs
l Monitors the external fan control board and the power modules
4.14.2 Working Environment of the DTMUThis part describes the working environment of the DTMU. The DTMU is placed in the common
subsystem of the BTS. It processes the data signals from the DELC or the optical transmission
equipment, and then transmits the data signals, clock signals, and control signals to the entire
BTS through the buses in the BTS.
Figure 4-23shows the working environment of the DTMU.
Figure 4-23Working Environment of the DTMU
Common subsytem
TBUS
DBUS
E1CBUS
Monitor BITS
E1
Optical
transmission equipment
DELC
DSAC DTMU
DTMU
Monitor BITS
Optical cable
DBUS/TBUS/VBUS
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NOTE
The configuration of the DELC in Figure 4-23shows that this is a BTS3012 cabinet. The BTS3012AE
uses the DELU instead of the DELC.
The working environment of the DTMU is as follows:
l The DTMU processes the data signals from the DELC or the optical transmission
equipment, and then transmits the signals to the DCSU through the data bus.
l The DTMU provides the entire with clock signals and control signals through the buses in
the BTS.
l The DTMU processes the lightning protection failure signals and BITS clock signals
reported by the DSAC.
4.14.3 Working Principles of the DTMU
This part describes the working principles of the DTMU. The DTMU consists of the BIU, MCU,
and MCK.
Figure 4-24shows the working principles of the DTMU.
Figure 4-24Working Principles of the DTMU
MCU
DTMU
BIU
MCK
DTRU
CBUS2
DBUSBSC
LMT MMI
Abis
Subrack number
and clock
External
synchronized clock
OML
Clock
BIU
l Connects the BTS with the BSC
l Provides four or eight routes of E1 backup between the active and the standby DTMUs
l Exchanges timeslot data between the E1 links and the DBUS
l Synchronizes the lower-level clock with the upper-level clock
MCU
l Supports multiple communication protocols such as UART and HDLC
l Controls the BIU to enable the communications between the BSC and the BTS
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l Provides a platform for the MCK software
MCK
l
Provides high-precision clock reference and system clock for the BTSl Judges the status of the phase-lock, provides software phase-lock and DA adjustment, and
generates the frame numbers
l Transmits clock signals and synchronization signals between the active and the standby
DTMUs
4.14.4 LEDs and Ports on the DTMU
This part describes the LEDs and ports on the DTMU panel. The nine ports on the DTMU panel
indicate the working status of the DTMU. Three ports on the DTMU panel provide clock
reference for the BTS, whereas the other port provides access for the maintenance equipment.
Panel
Figure 4-25shows the DTMU panel.
Figure 4-25DTMU panel
RUN
ACT
PLL
LIU1
LIU2
LIU3
LIU4
SWT
ALM
RST
MMI
T2M
FCLK
T13M
DTMU
LEDs
Table 4-33describes the LEDs on the DTMU panel.
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Table 4-33LEDs on the DTMU panel
LED Color Description
Status Meaning
RUN Green Indicates theworking
status of the
board
Slow flash (on for2s and off for 2s)
The OML is blocked.
Slow flash (on for
1s and off for 1s)
Normal
Fast flash at
irregular intervals
The BSC is loading data.
Off There is no power input for the
board.
ACT Green Indicates
whether theboard is
active or
standby
Off Standby board
On Active board
PLL Green Indicates the
clock status
Off The status of the clock is
abnormal.
On Free-run
Fast flash (on for
0.125s and off for
0.125s)
Pull-in
Fast flash (on for
0.5s and off for
0.5s)
Locked
LIU1 Green Indicates the
transmission
status of E1
port 1 and
port 5
Off E1 port 1 is normal when SWT
is off.
E1 port 5 is normal when SWT
is on.
On E1 port 1 near end alarm occurs
when SWT is off.
E1 port 5 near end alarm occurs
when SWT is on.
Fast flash (on for
0.125s and off for
0.125s)
E1 port 1 remote end alarm
occurs when SWT is off.
E1 port 5 remote end alarm
occurs when SWT is on.
LIU2 Green Indicates the
transmission
status of E1
Off E1 port 2 is normal when SWT
is off.
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LED Color Description
Status Meaning
port 2 and
port 6
E1 port 6 is normal when SWT
is on.
On E1 port 2 near end alarm occurs
when SWT is off.
E1 port 6 near end alarm occurs
when SWT is on.
Fast flash (on for
0.125s and off for
0.125s)
E1 port 2 remote end alarm
occurs when SWT is off.
E1 port 6 remote end alarm
occurs when SWT is on.
LIU3 Green Indicates thetransmission
status of E1
port 3 and
port 7
Off E1 port 3 is normal when SWTis off.
E1 port 7 is normal when SWT
is on.
On E1 port 3 near end alarm occurs
when SWT is off.
E1 port 7 near end alarm occurs
when SWT is on.
Fast flash (on for
0.125s and off for0.125s)
E1 port 3 remote end alarm
occurs when SWT is off.
E1 port 7 remote end alarm
occurs when SWT is on.
LIU4 Green Indicates the
transmission
status of E1
port 4 and
port 8
Off E1 port 4 is normal when SWT
is off.
E1 port 8 is normal when SWT
is on.
On E1 port 4 near end alarm occurs
when SWT is off.
E1 port 8 near end alarm occurs
when SWT is on.
Fast flash (on for
0.125s and off for
0.125s)
E1 port 4 remote end alarm
occurs when SWT is off.
E1 port 8 remote end alarm
occurs when SWT is on.
SWT Green Indicates the
transmission
status of E1
links
When the DTMU
supports eight E1
routes, the SWT
status is slow flash
When the SWT is off, LIU1 to
LIU4 indicate the transmission
status of E1 port 1 to 4.
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LED Color Description
Status Meaning
(on for 10s and off
for 10s).
When the SWT is on, LIU1 to
LIU4 indicate the transmission
status of E1 port 5 to 8.
When the DTMU
supports four E1
routes, the SWT
LED is always off.
LIU1 to LIU4 indicate the
transmission status of E1 port 1
to 4.
ALM Red Alarm LED Off No board alarm
On An alarm is generated.
NOTE
In the case that only one of the eight E1 routes supported by the DTMU is used for transmission, when
SWT is off, LIU1 is off and LIU2 to LIU4 are on; when SWT is on, LIU1 to LIU4 are on. If you only view
LIU1, you will find that LIU1 is on for 10s then off for 10s.
Ports
Table 4-34describes the ports on the DTMU panel.
Table 4-34Ports on the DTMU panel
Port Type Function
T2M SMA female connector Exports testing clock reference
FCLK SMA female connector 216.7 Hz frame clock
T13M SMA female connector 13 MHz primary clock reference
MMI RJ45 Terminal maintenance port
4.14.5 DIP Switches on the DTMU
This part describes the DIP switches on the DTMU. There are five DIP switches on the DTMU.
Four switches, namely, S4, S5, S6, and S7, specify the grounding for eight E1 routes. The otherswitch, S3, is reserved.
Figure 4-26shows the layout of the DIP switches on the DTMU and their factory settings.
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Figure 4-26Layout of the DIP switches on the DTMU
ON OFF
S4 4
1
4
S6 4
1
S7 4
1
S3 4
1
S51
The DIP switches on the DTMU specify the grounding of eight E1 routes. Table 4-35describes
the settings of the DIP switches.
Table 4-35Settings of DIP switches on the DTMU
DIP Switch DIP Bit ON/OFF Description
S5 1 ON Ring of the first TX E1 route is grounded.
OFF Ring of the first TX E1 route is not
grounded.
2 ON Ring of the first RX E1 route is grounded.
OFF Ring of the first RX E1 route is not
grounded.
3 ON Ring of the second TX E1 route is grounded.
OFF Ring of the second TX E1 route is not
grounded.
4 ON Ring of the second RX E1 route is grounded.
OFF Ring of the second RX E1 route is not
grounded.
S4 1 ON Ring of the third TX E1 route is grounded.
OFF Ring of the third TX E1 route is not
grounded.
2 ON Ring of the third RX E1 route is grounded.
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DIP Switch DIP Bit ON/OFF Description
OFF Ring of the third RX E1 route is not
grounded.
3 ON Ring of the fourth TX E1 route is grounded.
OFF Ring of the fourth TX E1 route is not
grounded.
4 ON Ring of the fourth RX E1 route is grounded.
OFF Ring of the fourth RX E1 route is not
grounded.
S7 1 ON Ring of the fifth TX E1 route is grounded.
OFF Ring of the fifth TX E1 route is not
grounded.
2 ON Ring of the fifth RX E1 route is grounded.
OFF Ring of the fifth RX E1 route is not
grounded.
3 ON Ring of the sixth TX E1 route is grounded.
OFF Ring of the sixth TX E1 route is not
grounded.
4 ON Ring of the sixth RX E1 route is grounded.
OFF Ring of the sixth RX E1 route is notgrounded.
S6 1 ON Ring of the seventh TX E1 route is
grounded.
OFF Ring of the seventh TX E1 route is not
grounded.
2 ON Ring of the seventh RX E1 route is
grounded.
OFF Ring of the seventh RX E1 route is not
grounded.
3 ON Ring of the eighth TX E1 route is grounded.
OFF Ring of the eighth TX E1 route is not
grounded.
4 ON Ring of the eighth RX E1 route is grounded.
OFF Ring of the eighth RX E1 route is not
grounded.
4 Boards and Modules of the BTS3012AE
BTS3012AE
Hardware Description(for FFU)
4-52 Huawei Technologies Proprietary Issue 01 (2007-09-10)
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NOTE
Adhere to the following principles to set the DIP switches on the DTMU:
l Set all the DIP switches to ON when the 75-ohm E1 cable is used by the BTS.
l
Set all the DIP switches to OFF when the 120-ohm E1 cable is used by the BTS.
4.14.6 Specifications for the DTMU
This part describes the dimensions, working voltage, power consumption, and weight of the
DTMU.
Table 4-36describes the specifications for the DTMU.
Table 4-36Specifications for the DTMU
Item Specification
Dimension Dimension of the PCB (length width height): 280.0 mm 233.4 mm
2.0 mm
Dimension of the front panel (length width): 261.0 mm 30.5 mm
Working voltage 48 V power input
Power
consumption (heat
consumption)
Maximum power consumption: 27 W
Weight 1.2 kg
4.15 DTRB
The Double-Transceiver Unit Backplane (DTRB) is placed in the DTRU subrack. The DTRB
provides six slots to house the DTRUs.
4.15.1 Functions of the DTRB
This part describes the functions of the DTRB. The DTRB connects the DCSU with the DTRU.
4.15.2 Working Principles of the DTRB
This part describes the working principles of the DTRB. The DTRB uses the bus structure to
implem