Huawei V100R005C10 Manuale utente
1
Installing a BBU Subrack
a
Installing a BBU
1. The following figure shows the slots in the subrack for installing boards and modules.
1. Install cable claws on the two sides of the
BBU. 2. Side the BBU along the guide rails into the
cabinet and secure screws on the panel.
Installing Boards and Modules
b
2. Insert the boards and modules into the correct slots and secure screws on the panel.
•Wear ESD wrist strap or ESD gloves to prevent electrostatic damage to the subrack.
•Only when the BBU install in TP48200A and APM30H cabinets, subrack cable claws are configured. Other
cabinets carry on next step directly.
NOTE
The figure shows only installation slots for the main processing board, core network processing board,
baseband processing board, fan module, and power module in the typical configuration. If you need to install
the USCUb22, UEIU, or UFLP, see “Installing Boards and Modules” in eNodeB Product Documentation.
NOTE
BBU Quick Installation Guide V100R005C10 03
Slot0
Slot1
Slot2
Slot3(UBBP/LBBPd4) Slot7(UMPT/LMPT)
Slot4
Slot5
Slot6(CNPUb/CNPU)
Slot16
(FANe)
Slot18
Slot19
(UPEUd)
2
Installing a GPS SPD
Installing Cables
Installing PGND Cables
a
1. Connect the M4 OT terminal at one end of the BBU PGND cable to
the OT terminal on the BBU.
2. Connect the M6 OT terminal at the other end to an external ground
bar or ground screw.
Some cables in this section need to be prepared manually. For details about how to prepare the cables, see
Appendix.
NOTE
This installation
applies only to
cabinets provided by
customers.
NOTE
1. Bind the GPS SPD to the left side panel of
the cabinet interior using cable ties. 2. Install a ground cable for the GPS SPD.
3. Install a clock signal cable for the GPS SPD:
(1)Connect the N50 straight female connector of the
clock signal cable to the PROTECT terminal on the
GPS SPD using a torque wrench to a torque of 4 N·m.
(2)Connect the SMA male connector of the GPS
clock signal cable to the GPS port on the
UMPT/LMPT/USCUb22.
4. Connect the GPS SPD jumper to the SURGE
terminal on the GPS SPD using a torque wrench to a
torque of 4 N·m.
Here is the process of binding a GPS SPD in the TP48200A cabinet. For details about how to install a GPS SPD
in other scenarios, please see “(Optional) Installing a GPS SPD” in eNodeB Product Documentation.
NOTE
3
Installing Cables
1. Connect the 3V3 connector at one end of
the BBU power cable to the -48 V port on the
UPEU module of the BBU, and tighten the
screws on the connector to 0.25 N·m.
2. Connect the other end of the BBU power
cable to the TP48200Acabinet.
a) Connect the cord end terminal to the
BLVD 16 A MCB port F6.
b) Connect the OT terminal of the BBU
power cable to the positive busbar of the
TP48200A.
Installing a Power Cable
b
Connecting Ethernet Cables or Optical Fibers to the Main Processing Board
c
a
3. Bind the cables properly using the optical fiber
binding strap based on BBU cable claw positions.
c1 Installing an FE/GE Optical Fiber
1. Lower the puller of an optical module and
insert the optical module into the SFP0/SFP1
port on the LMPT, the FE/GE1 port on the
UMPTb2, or the XGE1/XGE3 port on the
UMPTe3. Then, raise the puller.
2. Remove the dustproof cap from the optical
fiber. Connect an FE/GE optical fiber to the
optical module.
4. Install the winding pipe at the end of the
optical fiber. Ensure that the winding pipe is
installed at the position between the optical fiber
connector and the first optical fiber binding point.
NOTICE
Connect Ethernet cables or optical fibers to the UMPT/LMPT based on actual requirements. Cable layout for Ethernet cables
and optical fibers is identical.
Here is the process of installing a BBU power
cable in the TP48200A cabinet. For details about
how to install a BBU power cable in other
scenarios, please see “Installing a BBU Power
Cable” in eNodeB Product Documentation.
NOTE
4
Installing Cables
Connecting Ethernet Cables or Optical Fibers to the Main Processing Board
c
1. Connect the RJ45 connector at one end of
the Ethernet cable to the FE/GE0 port on the
UMPT/LMPT, the FE/GE1 port on the LMPT, or
the FE/GE2 port on the UMPTe3.
2. Connect the other end of the FE/GE
Ethernet cable to the electrical port of an
external transmission device.
c2 Installing an FE/GE Ethernet Cable
b
Connecting a CPRI Optical Fiber
d
1. Unbuckle the optical module
and then insert the optical
module into the CPRI port on
the UBBP/LBBPd4 board.
2. Remove the dust-proof
cap from the optical
connector, and insert the
optical fiber into the optical
module.
3. Route the optical fiber along the left side of the cabinet and lead the cable out through the
bottom cable outlet of the cabinet.
4. Bind the cables properly using the optical fiber binding strap based on BBU cable claw
positions.
5. Install the winding pipe at the end of the optical fiber. Ensure that the winding pipe is installed
at the position between the optical fiber connector and the first optical fiber binding point. (The
method is the same as that for installing an optical fiber.)
Installing a GPS Clock Signal Cable
1. Connect the SMA end of
the GPS clock signal cable to
the GPS port on the
UMPT/LMPT board.
2. Lay out the GPS clock signal cable
in the cabinet, and lead the end with a
type N female connector through the
cable outlet module to the Protect
port on the GPS surge protective
device (SPD).
UMPTb2
UMPTb2
Layout of the GPS clock
signal cable in the cabinet
e
NOTICE
•When the optical fiber remote
distance between BBU and eRRU is
from 10 km to 20 km, a 3 dB optical
attenuator needs to be added
between the optical module of
UBBP/LBBPd4 board and CRPI
optical fiber.
•If you use an optical fiber with an LC
connector on each end, connect TX
port on the BBU board to the RX port
on the eRRU, and connect the RX
port on the BBU board to the TX port
on the eRRU.
5
e
Installing Cables
1. Install the antenna support.
2. Install the GPS antenna and connect one
end of the feeder to the GPS antenna.
Waterproof the connector of the feeder by
adopting 1+3+3 (one layer of PVC insulation
tape, three layers of waterproof tape, then
another three layers of PVC insulation tape)
waterproof method.
3. Lay out the feeder outdoors.
4. When leading the feeder to the house,
prepare a drip loop and screw the fasteners
to seal the feeder window.
5. Install the feeder indoors and connect the
feeder to the surge port on the SPD.
6. (Optional) Install the GPS amplifier.
Connect the RF in port to the antenna side
and RF out to the device side.
7. (Optional) Install the 1-to-2 or 1-to-4 GPS
divider. Connect its one end to the feeder and
another end to multiple eBBUs.
Installing the GPS Antenna System and Cables
f
Checking the Hardware Installation
a
NO. Check Item
1 According to the network planning, the boards in the BBU are inserted in the proper slots and secured.
2 The subrack which is used to install the BBU is steady installed.
3 According to the network planning, the BBU cables are properly installed and secured.
4 The GPS antenna must be installed in an area with an open view and far from high buildings. The
vertical view angle of the GPS antenna must be greater than or equal to 90°.
5
The horizontal distance between the GPS antenna and the surge protector must be greater than or equal
to 2 m.
6
When leading the feeder to the equipment room, prepare a drip loop outdoors and seal the feeder window.
7
The
protect end of the surge protector for the equipment must face the cabinet.
Check Items for Device Installation
a
GPS antenna
Feeder
Feeder window GPS amplifier
GPS SPD
1-to-2 divider
The GPS antenna can be installed under a tower or on a tower. Here is the process of installing a GPS antenna
under a tower. For details about how to install a GPS antenna on a tower, see “Installing a GPS Antenna on a
tower” in eNodeB Product Documentation.
NOTE
5
Checking the Hardware Installation
Check Items for Cable Installation
b
NO. Check Item
1 All cables are connected securely and reliably. Pay special attention to the communication cable
connections and cable connections at the bottom of the cabinet.
2 Different types of cable, such as power cables, PGND cables, feeders, optical fibers, and signal cables
are separately bound.
3 The connectors of the RF cables are fixed in position. An incorrect connection may cause an abnormal
voltage standing wave ratio (VSWR).
6
Check Items for Electrical Connections
c
NO. Check Item
1 All self-made PGND cables are copper-based with the proper wire diameters. No breaking device such
as a switch or fuse is allowed for the electric connection of the grounding system. No short circuit is
allowed.
2 The PGND cable is securely connected and the AC lead-in cable and cables in the cabinet are correctly
connected according to the electrical design of the power system. The screws are tightened. In addition,
the inputs or outputs are not short-circuited.
3 The redundant part of the power cable or PGND cable is cut rather than coiled.
4 The terminals at two ends of each power cable or PGND cable are securely soldered or crimped.
5 The bare wires and the terminal handles at the wiring terminals are coated with heat shrink tubing.
6 A flat washer and a spring washer are well mounted on each OT terminal.
Checking the Power-on State of a BBU
Indicators
NOTICE
•The device must be powered on within seven days because it is unpacked. The power-off duration cannot exceed 48 hours
in the later maintenance.
•The power supply switch on the right side of the BBU is turned off.
Board Indicator Normal Status
PMU RUN Blinking
ALM Off
PSU Power supply Steady green
Faulty Off
UMPT,
LMPT,
UBBP,
LBBPd4
RUN
On for 1s and off for
1s
ALM Off
ACT On
UPEU RUN On
FAN STATE Blinking green (on
for 1s and off for 1s)
Start
Turn on the external power switch
End
Are the external
input power in the BBU
normal?
Power on the BBU
No
No
Rectify faults
Rectify faults
Yes
Yes
Are the LEDs on
the boards in the
BBU normal?
7
1. Strip the sheath off the cable to leave the
conductor with an L1 length exposed. Ensure
that the value of L1 is equal to the tail length of
the OT terminal.
2. Lead the cable through the heat shrink
tubing and place the OT terminal on the
exposed conductor.
Assembling the OT Terminal and the Power Cable
a
Appendix
Insulation layer of
the power cable Heat shrink tubing
3. Use the crimping tool to crimp the joint parts
of the bare crimping terminal and the
conductor.
4. Install the heat shrink tubing.
Crimping tool
NOTICE
•Heat the heat shrink tubing until it tightly clings to the
connector. Do not overheat the heat shrink tubing,
preventing the insulation layer being burnt.
•The heat shrink tubing must be fixed to cover the
cable conductor.
NOTICE
Ensure that the metal conductor of the cable is not
damaged when stripping the sheath off the cable.
NOTICE
The contact terminal should contact the insulation sheath
of the cable.
After the conductor is fed into the OT terminal, the
protruding part of the conductor, L2 must not be longer
than 2 mm.
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