bscb-mbts installation documentation
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BSCB
Hardware InstallationDocumentation
Prepared by,
S.Selvapriyan,
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Telecom Engineer,
Tamilnadu Circle,
Mob: +91 9842706562
Email: [email protected]
INDEX
1. BSCB Z7 MODEL IN HUBLI
2. BSCB SWITCHING RACKS MOUNTING
3. SERVER RACK
4. POWER SYSTEM INSTALLATION
4.1. DC POWER SUPPLY FOR BSCB4.2. AC POWER SUPPLY FOR SERVER
5. GROUNDING SYSTEM
6. INTERNAL CABLE CONNECTIONS
.
6.1 FRONT BOARD CONNECTION
GLIQV- UIMU CONNECTIONS
6.2 REAR BOARD CONNECTIONS
6.2.1 CLOCK CABLE CONNECTION
6.2.2 RCHUB DISTRIIBUTION
6.2.3 GPS 8K CABLE CONNECTION
6.2.4 GPS PP2S & 16 CHIP CLOCK CABLE
6.2.5 LINE 8K CABLE CONNECTION
6.2.6 RS 485 CABLE
6.2.7 PDSN BSCB CONNECTION6.2.8 BSCB SERVER CONNECTION
6.2.9 CROSS CABINET PWRD 485 CABLE
7. DDF INSTALLATION
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8. GPS ANTENNA INSTALLATION
8.1 MAKING PRIMARY FEEDER CABLE CONNECTOR
8.2 GPS ANTENNA REQUIREMENTS
8.3 GPS FEEDER CABLE SPECIFICATION
8.4 LIGHTNING ARRESTER REQUIREMENTS8.5 GPS GROUNDING CONNECTOR
9. MBTS INTRODUCTION
10.RBTS - INTRODUCTION
11.POWER CABLE AND GROUNDING CABLE
12. MBTS RBTS CONNECTION
12.BALUN CIRCUIT
13.DIP SWITCH SETTINGS
14.ZTE ODF
15.RJ 45 CONNECTOR
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1. BSCB Z7 MODEL IN HUBLI
2.Cabinet Mount:
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3.Server Cabinet :
4. POWER SYSTEM INSTALLATION
BSC has two types of power supplies such as:
-48 V DC supply for the BSC and alarm box 220 V AC supply for server, router, Ethernet switch, and background terminals.
MCBs OF SERVER:
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This is the power module of BSCB Server. It consists of two sets of MCBs. Each set
having ten MCBs. The rating of the first MCBs on either side is 32 amps. The ratingof the remaining MCBs are 10 amps.
Olive green GroundBlue- Neutral
Brown: Phase or Line
4.1 AC SUPPLY FOR SERVER:
Power cables from server cabinet to AC distribution cabinet are 3-core fire-resistant
cables.
Three cores are brown, blue and black respectively with a cross-sectional area of 4 mm2
each.
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4.2 CONNECTION OF DC POWER CABLE TO BSCB:
1. For easy connection of power cable and grounding cable, designing of each BSCcabinet is -48 V leading-in box, installed at top of cabinet.
2. BSCB switching rack has 1+1 redundancy for -48V supply.
3. Supply -48 V from DC power cabinet to power distribution plug-in box through filterat top of cabinet. Power module processes it and supplies to each plug-in box through
busbar. -48 V DC power cable is available in 25and 16 mm2 versions.
4. Use 25 mm2
cable Appearance of power cable is be either blue or black. Connect blueone to -48 V DC, and black one to -48 V GND.
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5. GROUNDING SYSTEM:
1. BSC Grounding
Connect grounding terminal (PE) at top of cabinet to grounding busbar using 35 mm2
stranded copper wire.
Routing of Power cable and grounding cable:
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The grounding cable from BSCB is connected to Indoor Grounding Busbar (IGB).
6.BSCB INTERNAL CABLE CONNECTIONS:
1.FRONT BOARD CONNECTION:2.REAR BOARD CONNECTION
6.1 FRONT BOARD CONNECTIONS:
Optical fiber is used as Media Stream for connecting all the resource shelves.
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GLIQV- UIMU CONNECTIONS:
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RX
TX
RX
TX
RX
TX
RX
TX
UIMU GLIQV CONNECTION
SD1 SD1
UIMU9
UIMU1
0
GLIQV GLIQV
TX
RX
TX
RX
TX
RX
TX
RX
SD2 SD2
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6.2 REAR BOARD CONNECTION:
Ethernet cable is used as Control stream in the rear board side.
6.2.1 CLOCK CABLE DISTRIBUTION:
The system clock cable provides the connection of clock signals (8 K, 16 M and PP2S)from the Clock Generator (CLKG) board to the Universal Interface Module (UIM)
board, to implement system clock distribution. Each system clock cable distributesthe clock signals to six UIM boards in three resource plug-in boxes.
END A END B
BOARD NAME RCLKG RUIM1, RUIM2, RUIM3
PORT NAME CLKOUT CLKIN
CONNECTOR NAME DB 44 DB9
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6.2.2 RCUB DISTRIBUTION:
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CLKOUT from RCLKG towards
CLKIN in all the Rear board UIMU &
UIMC.
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ENDA ENDB
BOARD NAME REAR BOARD OF OMP
(RMPB)
UIMU
PORT NAME RCHUB FE C1/2((MASTER &
SLAVE)
RCHUB CONNECTOR:
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End B1
End B2
End B3
End B4
End B5
End B6
End B7
End B8
Label
End A
Label
Label
Label
Label
Label
Label
Label
Label
6.2.3 GPS 8K CLOCK CABLE
The GPS 8 K clock cable sends the 8 K reference clock signals of GPS module to theCLKG for phase locking.
The cable is a 4-core single-strand round wire. Both ends of cable are 8P8C straightcable crimping shielding connectors.
End A is plugging to the position mark with GCM8K on the backplane of GCM
plug-in box, and End B is plugging to the position mark with 8KIN2 on the
RCKG1.
ENDA ENDB
BOARD NAME REAR BOARD OF GCM RCLKG1
PORT NAME GCM 8K 8K IN2
6.2.4 GPS PP2S&16CHIP CLOCK CABLE
The GPS PP2S and 16CHIP clock cable of GCM connects the PP2S and 16CHIP clock
signals of CLKG. The cable is a 4-core single-strand round wire. Both ends of cableare 8P8C straight cable crimping shielding connectors.
End A is plugging to the position mark with GCMCLK0 or GCMCLK1 on the GCM and
End B is plugging to the position marked with PP2S/16CHIP on the RCKG2.
ENDA ENDBBOARD NAME REAR BOARD OF GCM RCLKG1
PORT NAME GCM CLK0 (OR) GCM PP2S/16 CHIP
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CLK1
6.2.5 LINE 8K CABLE:
The line 8 K clock cable sends the 8 K reference clock signals extracting from the line
to the CLKG for phase locking
The cable is a 4-core single-strand round wire. Both ends of cable are 8P8C straightcable crimping shielding connectors, that is, RJ45 connector.
End A is plugging to the position marked with 8KOUT/DEBUG-232 on the Rear Card of
DTB (RDTB) or the position marked with 8KOUT/ARM232 on the Rear Card of Multi-
service Network Interface Card (RMNIC). End B is plugging to the position marked with8KIN1 on the RCKG1.
END A ENDB
BOARD NAME RDTB (OR) RMNIC RCLKG1
PORT NAME 8KOUT/DEBUG-232 (OR)
8KOUT/ARM-232
8KIN1
6.2.6 RS 485 CABLE:
RS485 cable includes PWRD 485, and GPS 485 cable.
PWRD 485 cable
This cable connects the OMP board to the PWRD 485, in order to monitor the
environment of cabinet.
Both ends of the cable are 8P8C straight crimping shielded connectors.
End A is plugging to the position mark with PD 485 on the Rear Board of MP (RMPB)
board, and End B is plugging to the position mark with RS 485 on the back of power
distribution plug-in box.
ENDA ENDBBOARD NAME RMPB (REAR BOARD OFOMP)
POWER MODULE
PORT NAME PD 485 RS 485
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GPS 485 cable
GPS 485 cable connects the OMP to GPS module.
Both ends of cable are 8P8C straight crimping shield connectors.
End A is plugging to the position mark with GPS 485 on the Rear Board of MP
(RMPB) board, and End B is plugging to the position mark with RS 485 on the
backplane of GCM plug-in box.
ENDA ENDB
BOARD NAME RMPB (REAR BOARD OF
OMP)
REAR BOARD OF GCM
PORT NAME GPS 485 RS 485
6.2.7 PDSN BSCB
BOARD NAME: RMNIC (REAR BOARD OF IPCF)
PORT NAME: FE1
6.2.8 BSCB- SERVER:
BOARD NAME: RMPB (REAR BOARD OF OMP)
PORT NAME: OMC2
6.2.9 CONNECTING CROSS-CABINET PWRD485 MONITORING CABLESystem is expands, BSC cabinet cannot accommodate all plug-in boxes, and one or
more BSC cabinets connecting the PWRD485 monitoring cables.
Open the back door of cabinet, Top of cabinet is PWRDB connector board. The board
has two PWRD 485 interfaces for connecting various cabinets.
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X2
RS485
X4
RS485
X2
RS485
X4
RS485
X2
RS485
X4
RS485
OMP
Rack1 Rack2 Rackn
The monitoring cable is a common straight-through network cable.
NOTE:
RGIM is the rear board of SDTB.
RMPB is the rear board of OMP.RCLKG1, RCLKG2 are the rear boards of CLKG.
RMNIC is the rear board of IPCF
.
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7. ZTE DDF:
7.1 DDF Mounting: FRONT VIEW
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7.2 DDF MOUNTING: BACK VIEW
8. GPS CABLE INSTALLATION
8.1 MAKING PRIMARY FEEDER CABLE CONNECTORS:
GPS feeder made of a 9, 1/2" or 7/8" coaxial cable.
Before installing the feeder, cut a cable of appropriate length according to the site condition and make itsconnectors.
Perform following steps to make feeder connectors:
0 Stripping
Strip GPS feeder to expose 16.7 mm of shielding layer and then strip shieldinglayer to expose 6.2 mm of core.
6.2
16.7
Unit: mm
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Put nut, crimping tube, and bush of GPS feeder connector on the cable, and then placepins of connector vertically on crimper.
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3. Welding core:
Put solder wires into the pin and melt the solder wires with an electronic iron. Then,
insert cable cores into the welded solder wires, to finish welding of pins and cable
cores. Shielding layer of cable opened and covered on the bush.
1 4 65 7 8 932
1. Pin 2. Solder paste 3. Cable core 4.Insulation washer 5. Bush
6. Cable shielding 7. Crimping tube 8. Nut 9. Cable
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8.2 GPS ANTENNA REQUIREMENTS
Install GPS antenna in open sky with wide view, to ensure that it can trace as manysatellites as possible. Do not install GPS antenna under microwave antenna, high-
voltage lines, and television-transmitting tower or within the radiation range of the
main lobe of a mobile system antenna.
GPS antenna is mounting on a tower or roof.
1. Tower mounted GPS antenna.
Install GPS antenna in lightning protection area at 45 on the lower part of tower, nomore than five meters above ground. Fix pole of GPS antenna at horizontal distance of 30
cm from tower.
8.3 GPS FEEDERS SPECIFICATION
Use feeders of different specifications depending upon the actual length of GPS
feeder.
1. Use 9 feeder if length of GPS feeder is less than 80 m.
2. Use 1/2" feeder if length of GPS feeder is less than 100 m.
3. Use 7/8" feeder if length of GPS feeder is more than 100 m.
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8.4 LIGHTNING ARRESTER REQUIREMENTS
Install lightening arrester between the GPS antenna and BSC cabinet. Lighteningarrester consists of Two-ends.
One end is calls device and other ends antenna. The device end is connecting to the
N-type double-male conversion connector through BSC cabinet.
The other end antenna is connecting to the N-type double-female conversionconnector through GPS antenna.
8.5 GPS GROUNDING CONNECTOR:
The GPS grounding kit is connecting to the outdoor grounding copper busbar with the
grounding cable of six mm2.
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9. MBTS:
9.1 INTRODUCTION:
In remote regions that need wide coverage and only have a small number of users, theapplication of high-capacity macro BTS cannot put the equipment into full play, and
furthermore, the equipment room environment in remote regions can hardly meet the
requirements of macro BTS. To satisfy the market needs, ZTE CORPORATION develops
ZXCBTS CDMA micro base transceiver station and remote station products.
MBTS:
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9.2 Specification of the MBTS:
1. Dimensions of a single cabinet: The dimensions of the integrated equipment (height
width depth): 630mm 400mm 285mm.
The internal design capacity is about 580mm 396mm 200mm.
2. Weight of a single shelf: About 37kg.2. Weight of a single shelf: About 37kg.
3. 220V AC power, with a power supply range: 150VAC~300VAC;3. 220V AC power, with a power supply range: 150VAC~300VAC;
Power Consumption: 370WPower Consumption: 370W
4. -48V DC power, with a power4. -48V DC power, with a power
Supply range:-40VDC~-57VDCSupply range:-40VDC~-57VDC
Power Consumption: 370WPower Consumption: 370W
5.5. The grounding resistance of the shelf should be less than or equal to five ohms.
6. Operating temperature: -30C ~+55C;Storage temperature: -40C ~+75C;
1. Relative humidity: 5%~98%.
8. Requirement for the noise figure of a micro-BTS:
Noise figure of a micro-BTS: -55dB.
10. RBTS:
1. A ZXCBTS CDMA remote station does not have the TFS and BDS. To form a
ZXCBTS CDMA remote station, just replace the BDM with an RFM.
Clock for RBTS:
The clock of a remote station is optically transmitted to the RFM board of the remote
station via an OIM sub-board inserted on the BDM. The RFM board needs a phase lock
loop to convert the 16CHIP digital clock transmitted via fiber to the 12M analog signal,
in order to provide the RF part with a local oscillation signal.
11. POWER CABLE AND GROUNDING CABLE:
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Grounding terminal No. Color of Core Power Polarity
1 Blue -48V
2 Red -48V
3 Black -48VGND
4 Yellowish green -48VGND
Power cables should be arranged in order. If the power cables are distributed in parallel
with E1 signal lines, a horizontal space of 200mm is required between them.
BOTTOM VIEW OF MBTS:
BOTTOM VIEW OF RBTS:
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Power supply
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GROUNDING FOR MBTS:
The PGND cable of the micro-BTS adopts the olivine or yellow copper-core cable with
the cross-section area of 16 mm2, which is connected to the indoor PGND copperbusbar reliably.
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12. CONNECTION BETWEEN MBTS AND RBTS:
BDM BOARD OF MBTS:
One end of the fiber cable is connected to OIM Board in MBTS and anotherend is connected to RFM Board in RBTS.
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RFS BOARD OF RBTS
13.BALUN CIRCUIT:
The Impedance of the MBTS is 75 ohm. The Impedance of the BSCB is 120
ohm.
Balun circuit is used to convert 75 ohm into 120 ohm. End A is connected to MBTS. End
B (RJ 45connector) is connected to ZTE DDF.
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Towards DDF
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E1 Cable:
We are using the RJ 45 Connector to connect the E1 cable from MBTS to DDF throughBALUN circuit. In RJ 45 connector,
1,2 - TX4,5 - Rx
This pair is one E1 cable.
14. DIP SWITCH:
Set the PATH ID by setting the DIPswitch on the BDM based on the E1 cable connections
with the CDSU of the BSC. Please refer the following diagram for setting the DIP switch.
PATH_ID12
PATH_ID2
PATH_ID3
PATH_ID0
4
ON
OFF
When PATH_ID=1, the DIP switch is set as:
When PATH_ID=5, the DIP switch is set as:
ON
OFF
ON
OFF
3
1
INDICATOR:
If E1 is through, HL3 Indicator in MBTS will be in off position.
HL3 YellowThe first E1
synchronization indicator
On: out of synchronization; off: synchronization
Off: Indicates the first E1 is connected.Off
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15.ZTE ODF:
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FC connector
AT BSCB end
SC connector
AT ODF end