Huawei V100R005C10 User manual

Installing a BBU Subrack

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

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)

Installing a GPS SPD

Installing Cables

Installing PGND Cables

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

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

Connecting Ethernet Cables or Optical Fibers to the Main Processing Board

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

Installing Cables

Connecting Ethernet Cables or Optical Fibers to the Main Processing Board

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

Connecting a CPRI Optical Fiber

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

Layout of the GPS clock

signal cable in the cabinet

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.

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

Checking the Hardware Installation

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°.

The horizontal distance between the GPS antenna and the surge protector must be greater than or equal

to 2 m.

When leading the feeder to the equipment room, prepare a drip loop outdoors and seal the feeder window.

The

protect end of the surge protector for the equipment must face the cabinet.

Check Items for Device Installation

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

Checking the Hardware Installation

Check Items for Cable Installation

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).

Check Items for Electrical Connections

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

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

Rectify faults

Yes

Are the LEDs on

the boards in the

BBU normal?

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

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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