SingleRAN WiMAX-LTE Quick Installation Guide(Co-RRU3232)(V100R002C00_Draft a)(PDF)-En

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HUAWEI TECHNOLOGIES CO., LTD.

DBS3900 WiMAX

V100R002C00

Quick Installation Guide

(Co-RRU3232)

Issue: Draft ADate: 2012-05-15



Contents

Installation Tools

Installation Scenarios

Requirements for Dimensions and Installation

Space

Installation Flowchart

Install ing a BBU3900

Installing an RRU

Cable ConnectionsInstall ing BBU3900 Cables

Install ing RRU Cables

Installing an Outdoor Junction Box

Measuring the VSWR of the Antenna System

Installation Checklist for the BBU

Installation Checklist for the RRU

Checklist for the Project Implementation

Appendix

2

3

4

6

7

9

1519

26

30

30

31

32

32

33

Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.



Installation Tools

Phillips screwdriver (M3 to M6)

Flat-head screwdriver (M3 to M6)

Adjustable wrench

(aperture ≥ 32 mm or 1 1/4")

Torque screwdriver

Measuring tape

Vacuum cleaner

Wire stripper

Level

Marker

(diameter ≤ 10 mm or 0 3/8")Multimeter

Rubber mallet

ESD gloves

Combination wrench21 mm to 21 mm (0 13/16" to0 13/16") for the pole-mounted mode

17 mm to 17 mm (0 11/16" to0 11/16") for the wall-mounted mode

Cable cutter

Heat gun

Hammer drill (Bit Ф14)

Utility knife

Torque wrench

COAX crimping tool

5 mm (0 3/16")

M3 to M6

Inner hexagon spanner



Installation Scenarios

a

b RRU3232 Installation

BBU3900 Installation

In a 19-inch cabinet In an APM30 In a TMC11H In an OMB

For details about how to install an APM30 and TMC11H, see the APM30H Installation Guide.

On the wall

BBU

On a wire pole

BBU

On a pole On U-steelOn angle steel

• A cabinet must be powered on within 24 hours after it is unpacked, and the power-off time for maintenance

must not exceed 48 hours to avoid short circuits.• A module must be powered on within 24 hours after it is unpacked, and the power-off time for maintenancemust not exceed 24 hours to avoid short circuits.

BBU

BBU



Requirements for Dimensions and Installation Space

a Dimensions

Dimensions of an RRU with a shell (H x W x D):485 mm x 300 mm x 170 mm (1'-7 1/8" x 11 13/16" x 6 11/16")

Dimensions of a BBU (H x W x D):

86 mm x 442 mm x 310 mm (3 3/8" x 1'-5 3/8" x 1'-0 3/16")

310 mm (1'-0 3/16")

442 mm (1'-5 3/8")

86 mm (3 3/8")

Space Requirements for Installing a BBU3900

Space that is required on three sides of a 19-inch cabinet for installing a BBU3900

25 mm (0 1")

25 mm (0 1")

70 mm (2 3/4")

b

485 mm (1'-7 1/8")

300 mm (11 13/16") 170 mm (6 11/16")



Space Requirements for Installing an RRU3232c

≥ 300 mm (11 13/16")

≥ 500 mm (1'-7 11/16")

≥ 8 0 0

m m

( 2 ' - 7 1

/ 2 " )≥ 6 0 0 m m ( 1 ' - 1 1 5 / 8 " )

≥ 3 0 0 m m ( 1 1 1

3 / 1 6 " )

200 mm (7 7/8")

300 mm (11 13/16")

6 0 0 m

m

( 1 ' - 1 1

5 / 8 " )

4 0 0 m m ( 1 ' - 3 3 / 4 " )

1 0 0 m m

( 3 1 5 / 1 6 " )

Recommended space Minimum space

The minimum installation space meets the requirements ofthe equipment for normal running and heat dissipation, butdoes not meet the requirements for OM such as checkingthe indicator status and opening the maintenance cavity.When the ambient space is insufficient, the minimuminstallation space can be adopted.

The recommended installation space meets therequirements of the equipment for normal runningand OM. When the ambient space is sufficient, therecommended installation space can be adopted.

Recommended horizontal distancebetween two RRUs Minimum horizontal distance between two RRUs

Recommended vertical distance betweentwo RRUs

Minimum vertical distance between two RRUs

≥ 500 mm (1'-7 11/16")

≥ 500 mm (1'-7 11/16")

≥ 300 mm (11 13/16")

300 mm (11 13/16")

300 mm (11 13/16")

200 mm (7 7/8")

≥ 300 mm(11 13/16")

≥ 600 mm(1'-11 5/8")

≥ 600 mm(1'-11 5/8") 100 mm

(3 15/16")

400 mm(1'-3 3/4")

400 mm(1'-3 3/4")



Installation Flowchart



Installing a BBU3900

a Installing a BBU3900 in a 19-Inch Rack

b Installing a BBU3900 in an APM30H

BBU

Mounting ears in

reverse mode

Mounting ears instandard mode

2 N·m

(17.70 lbf·in.)

M6X16

2 N·m

(17.70 lbf·in.)

M6x16

a. Verify that the BBU3900 mounting ears in a 19-inch rack oran OMB are installed in standard mode, and the BBU3900mounting ears in an APM are installed in reverse mode.

b. Install a BBU3900 in an APM30H usinga binding bracket.

Mounting ears inreverse mode

Mounting ears inreverse modeBindingbracket

Mounting ears instandard mode

For easy installation, remove the two groundscrews from the right side of the BBU3900panel before installing the BBU3900.



d Installing the BBU3900 in an OMB

c Installing the BBU3900 in a TMC11H

BBU3900

Reversely installed

mounting ears

FAN

Reversely installedmounting ears

M6X16

2 N.m(17.70 lbf.in.)

M6X16

2 N.m(17.70 lbf.in.)

Remove the two ground screws on the right side of

the BBU panel before installing the BBU.

BBU3900



Dual-nut bolt

Main bracket

Auxiliarybracket

Installing an RRU

RRU mounting kits

a Installing an RRU on a Pole with a Diameter of 60 mm to 114mm (2 3/8'' to 4 1/2'')

• Place the RRU on foam or cardboard for protection.• Do not place the RRU on the ground in the upright position, because the RF ports at the bottom of the RRU

cannot bear the weight of the RRU.

Cover plate Attachmentplate

Confirm that the hoistclamps on the mainbracket are securely

tightened beforeinstalling the mainbracket.

1200 mm to 1600 mm(3'-11 1/4'' to 5'-3'')

Tighten the screws afterinstalling the RRU. Loosenthe screws before

removing the RRU.

1. Install a main bracket.

Fit one end of the auxiliary bracket onto one dual-nut bolt, and then fit the other end onto the other dual-nutbolt during installation.

Fixing hoop

Tighten the screws toremove the RRU.

60 mm to 114 mm (2 3/8'' to 4 1/2'')Recommended diameter of the pole: 80 mm (3 1/8")

Main bracket

Hoistclamp

The anglebetween thevertical line andthe angle steelor U-steel mustbe less than orequal to 10degrees.

≤ 10°

RRU

Anglesteel orU-steel



Installing Two RRUs on a Pole with a Diameter of 60 mm to114 mm (2 3/8'' to 4 1/2'')b

The arrows onthe main bracketpoint upwards.

2. To secure the main and auxiliary brackets to the pole, tighten the nuts using an adjustablewrench with a torque of 40 N·m (354.03 lbf·in.).

Tighten the two dual-nut bolts alternatively. After thebrackets are secured, use a measuring tape toconfirm that the distances between the main bracketand the auxiliary bracket on both sides are the same.

40 N·m

(354.03 lbf·in.)

3. Install an RRU on the main bracket, and adjust the position of the RRU until it snaps shut.

1. Install one RRU. 2. Install another RRU.



4. Install the second RRU on the main bracket.

3. Swap the front cover plate with the attachment plate at the rear of thesecond RRU.

Ensure that the cablingcavities of the two RRUsface the same directionwhen installing the RRUsin back-to-back mode.

Cable cavity

RRU in standard mode RRU in reverse mode

5 N·m

(44.25 lbf·in.)

M6X16

Top views of fourinstallation modes

c Installing an RRU on U-Steel

50 mm to 100 mm(1 15/16'' to 3 15/16'')

30 mm to 50 mm(1 3/16'' to 1 15/16'')

U-steel

• The procedure for installing the RRUon U-steel is the same as theprocedure for installing the RRU on apole.

• You are advised to install only oneRRU on U-steel.



Top view of the installationmode

d Installing an RRU on Angle Steel

Angle steel6 3 m

m t o 8 0 m

m

( 2 1 / 2 ' ' t o 3

1 / 8 ' ' ) 6 3

m m

t o 8 0 m m

( 2 1 / 2 ' ' t

o 3 1 / 8 ' ' )

You are advised to install only one RRUon a wire pole.

e Installing an RRU on a Wire Pole with a Diameter of 300 mm to390 mm (11 13/16'' to 1' 3 3/8'')

Main bracket

Fixing hoop

35 N·m

(309.78 lbf·in.)

• The procedure for installing the RRU onangle steel is the same as the procedure forinstalling the RRU on a pole.

• You are advised to install only one RRU onangle steel.



f Installing an RRU on the Wall

1200 mm to 1600 mm(3'-11 1/4" to 5'-3")

128 mm(5 1/16")

Auxiliary bracket

RRU

1. Place the auxiliary bracket in the installation position against the wall.Then, level the auxiliary bracket using a level and mark the anchor pointsusing a marker.

The recommended distance between the auxiliary bracket and the floor isfrom 1200 mm to 1600 mm (3'-11 1/4" to 5'-3").

2. Drill holes at the anchor points and then install the expansion bolts.

Ø14

After completely removingan expansion bolt, discardthe plastic tube.

M10x65 bolt

Spring washer 10

Plastic tube

Flat washer 10

Expansion tube

90°55 mm to 60 mm(2 3/16" to 2 3/8")

20 mm to 30 mm(0 13/16" to 1 3/16")

• Do not hammer the boltentirely into the wall.

• Leave 20 mm to 30 mm(0 13/16" to 1 3/16") ofthe bolt outside the wall.

86 mm(3 3/8")

86 mm(3 3/8")

Requirements for installing only one RRU on the wall are as follows:• The wall must bear a minimum of four times the weight of an RRU.

• The torque for tightening the expansion bolt is 30 N·m (265.52 lbf·in.). This ensures that the expansion boltsare secured to the wall without causing damage to it.



3. Fit the auxiliary bracket on the expansionbolts in the downward direction, and thentighten the bolts using a combination wrenchwith a diameter of 17 mm (0 11/16").

4. Install a main bracket.

5. Install an RRU.

The arrows on the mainbracket point upwards.

30 N·m

(265.52 lbf·in.)

M10



Cable Connections

a Cable Connections for the RRU

RS485 port

Externalpowersupplysystem

Optical fiber

Ethernet cable

To aBooleansensor

Connected through the optical

fiber or Ethernet cable

RRU power cable

CPRI optical fiber

BBU powercable

DCDU

Configuration Type WiMAX: S(2/2/2), 2T2R, 10M Hz

LTE:S(1/1/1), 2T2R, 20M Hz WiMAX LTE

2C 1C

C=carrier,1C=1carrier,2C=2 carrier

A

NT

A

NT

A

NT

A

NT

A

NT

A

NT

Color-coding

ASN-GW

The LMPTb, LMPTw, LBBPc, UPEUc, and FANc are used as examples.

In co-RRU mode, the BBU and the RRU are connected only in a dual-star topology. The RRU is connected to basebandprocessing boards for different modes in the BBU using two CPRI ports.

An LBBPc provides six CPRI ports. However, only the CPRI0, CPRI1, and CPRI2 ports are used in the typical configurationsof a WiMAX-LTE BS in co-RRU mode.

Configure the DCDU based on onsite situations.



DCDU

WiMAX LTE

2C 1C

C=carrier,1C=1carrier,2C=2 carrier

RS485 portOptical fiber

Ethernet cable

To aBoolean

sensor

Connected through the optical

fiber or Ethernet cable

RRU power cable

CPRI optical fiber

BBU power

cable


LTE:S(1/1/1), 4T4R, 10M Hz

ANT

Color-coding

Externalpowersupplysystem

ANT ANT

ASN-GW



DCDU

WiMAX LTE

1C 1C

C=carrier,1C=1carrier

RRU power cable

BBU powercable


LTE:S(1/1/1), 4T4R, 20M Hz

ANT ANT ANT

CPRI optical fiber

RS485 portTo aBoolean

sensor

Optical fiber

Ethernet cable

Connected through the opticalfiber or Ethernet cable

ASN-GW

External

powersupplysystem

Color-coding



b Cable Connections for an OMB

OMB PGND cable

FE cable AC input power cable

CPRI optical fiber

Monitoring cable between themonitoring board and the UPEU

BBU input power cable

Monitoring cable between the EPS30-4815 and the monitoring board

Remove the waterproof module before installing the cables. Then,route the cables into the holes at the bottom of the cabinet as

required. After installing all cables, reinstall the waterproof module.

a c



BBU power cable

• The BBU PGND cable is yellow and green or green, with a

cross-sectional area of 6 mm2 (0.01 in.2).

• One end of the PGND cable is connected to the BBU using an

OT terminal or a two-hole M4 OT terminal, and the other end

of the cable is connected to the ground bar using an OT

terminal. The BBU PGND cable must be prepared onsite.

• The PGND cable in the APM30, TMC, or OMB is groundedusing mounting ears.

Installing BBU3900 Cables

a Installing a PGND Cable

b Installing a -48 V DC Power Cable

BBU PGND cableTwo-hole OTterminal

OTterminal

BBU

BBU

BBU

BBU

DCDU-03B

DCDU

APM30H TMC11H

• Connect the DCDU-03B and the BBU using the LOAD6 or LOAD7 port,with a priority of LOAD6 > LOAD7.• Connect the DCDU-03C and the BBU using the LOAD6 port.

PWR

LOAD6

The following figures showa bent OT terminal.



PWR

LOAD1 10AOMB

d Installing a Power Cable Between the BBU3900 and the TMC11H

e Installing a Power Cable Between the BBU3900 and the OMB

c Installing a Power Cable Between the BBU3900 and the APM30H

PWR



f Installing an FE/GE Ethernet Cable or Optical Fiber

ASN-GW

Optical fiber Ethernet cable

BBU3900

Ethernet cableOptical fiber

Install swappableoptical modules• Use either the Ethernet cable or optical fiber to connect

the transmission equipment or gateway.• Install swappable optical modules before installing optical

fibers. The performance of an optical module that isexposed to the air for more than 20 minutes may be

abnormal. Therefore, you must insert an fiber optic cableinto an unpacked optical module within 20 minutes.

• Confirm that the FE/GE Ethernet cable is a shieldstraight-through cable.

Ground the shield layer of an FE/GE Ethernet cable if an FE/GE Ethernet cable is used in an APM30H orTMC11H. For details about the grounding, see the description below.

ground clip

Install a ground clip on an FE/GE Ethernet cable at proper positionwithin 1 m (3'-3 3/8") from the cabinet cable outlet.

1. Determine the position for grounding the FE/GE Ethernet cable, and

strip off a sheath of about 40 mm (1 9/16") to expose the shield layer.2. Loosen the screws on the ground clip, and route the FE/GE cable

through the clip.

3. Confirm that the shield layer of the FE/GE Ethernet cable is in fullcontact with the ground clip, and tighten the screws on the clip.



g Install ing CPRI Optical Fibers Between the BBU3900 and the RRU3702

h Installing a GPS Clock Signal Cable

• Install swappable optical modules before installing optical fibers. The performanceof an optical module that is exposed to the air for more than 20 minutes may beabnormal. Therefore, you must insert an fiber optic cable into an unpacked opticalmodule within 20 minutes.• Connect the longer exposed end of the optical fiber to the BBU and wrap the endwith a tube, and connect the shorter exposed end to the RRU.

CPRI optical fiber

Install hot-swappableoptical modules.

• Ground the GPS surge protector if the BBU is installed in a 19 inch cabinet.• If the PGND cable for the GPS surge protector is grounded nearby. If no ground bar is available nearby, connectthe PGND cable to the ground screw for the BBU. Note that two OT terminals can be connected to the ground

screw.• If the cross-sectional area of the PGND cable is 6 mm2 (0.01 in.2), install an OT terminal to each end of thePGND cable.

SMA maleconnector

Type N femaleconnector

GPS clock signal cable

Surge protector

on theequipment side

ProtectSurge

GPS antenna

BBU3900

GPS clocksignal cable

SMA

T-connector

The installation of an SMA T-connector is forreference only.

RRU3232 RRU3232 RRU3232

WiMAXLTE

WiMAX

LTE

WiMAX

LTE

WiMAX

LTE

WiMAX



b. In an OMB1.Install an SMA T-connector.

2.Install a surge protector.

Surge protector

SMA male connector

• Install a T-connector inside a cabinet andsecure it nearby based on the cable layout.

• Wrap the T-connector joints with PVCinsulation tape.

a. In an APM30H

SMA T-connector

Surge protector



jInstalling a Monitor ing Signal Cable Between the BBU3900

and the CMUA (APM30H, TMC11H)

APM30H TMC11H

i Installing a Monitor ing Signal Cable Between the BBU3900 andthe EMUA

Monitoring signal cable betweenthe BBU3900 and the EMUA

EMUA

MON1

The cable connection does not

apply to the APM30H, TMC11H,and OMB.

APM30HTMC11H



kInstalling a Monitor ing Signal Cable Between the BBU3900 andthe OMB

MON1

RS232/RS485

COM OUT COM IN

When an OMB is configured, the COM IN port on the

OMB corresponds to the MON1 port on the BBU, and

the COM OUT port on the OMB corresponds to theRS232/RS485 port on the AC/DC power module.



Installing RRU Cables

a Installing a PGND Cable

RRU PGND cable

• The RRU PGND cable is yellow and green or green, with across-sectional area of 16 mm2 (0.02 in.2 or 6 AWG).

• The two-hole OT terminal (M6) on one end of the cable isconnected to the RRU, and the OT terminal on the other endis connected to the ground bar. The RRU PGND cable mustbe prepared onsite.

Two-hole OTterminal

OT terminal

bb Installing a Power Cable

4.8 N·m(42.48 lbf·in.)

M6

a.RRU+APM30H

An EPS subrack supplies power to amaximum of six RRUs. Therefore, an RRU

power cable can be connected to any of theRRU0 to RRU5 ports on the EPS subrack.

Link the easy power receptacle (pressfit type) connector at one end of the RRU power

cable to the RRU0 port on the EPS subrack.

Grounding the shielding

layer of the power cable:

shielding layer [40 mm (1 9/16“)] PGND cable

(7 7/8")



RRU power cable

• Connect the DCDU-03B and the RRU using theLOAD0 or LOAD5 port, with a priority of LOAD0> LOAD5.

• When the BBU and RRU are used indoors, donot ground the RRU power cable.

• The RRU power cable must be grounded if anRRU is installed outdoors. For details, see the

appendix.• For details about how to prepare an OT terminal,see the appendix.

Ground

point for theshield layer

of the powercable

DCDU-03B

LOAD0NEG0(-)RTN0(+)

Groundclip

Feederwindow

RRU

b.RRU+TMC11H c.RRU+OMB

• In the 220 V AC single-phase and 110 V AC dual-live-wire power supplyscenario, only one RRU can be installed because the power supply capacityof the power equipment (AC/DC) is limited.• No surge protection is required for DC power supply. In this case, an RRUpower cable can be used for a distance of not greater than 5 m (16'-4 7/8").RRU cable connection

(7 7/8")

Bent OT terminal:



c Closing the RRU Cabling Cavity

Strictly follow the instructions in the label

and the installation guide when preparingthe cable.

Cover of the cabling cavity

Waterproof block

To prepare the easy power receptacle (pressfittype) female connector for the RRU powercable, perform the following steps:

Label for the RRU

power cable

1.4 N·m

(12.39 lbf·in.)

M4

After installing RRU cables, fill the

vacant cable holes in the cablingcavity using waterproof blocks.

1. Determine the length of different parts based on thelabel on the cover plate of the cabling cavity.

2. Strip the sheath and shield layer as required.

3. Strip the sheath of each core.

4. Install an easy power receptacle (pressfit type)female connector to both ends of the two cores.

a. Push the yellow module using a Flat-head screwdriver.

b. Securely connect the blue NEG(-) wire to the 2 or - port on theconnector, and black or brown RTN(+) wire to the 1 or + port on

the connector. Then, push the exposed yellow module back.

5. Strip the sheath of the RRU power cable asrequired to expose the shield layer.



d Installing RF Jumpers

Wrap a layer of PVCinsulation tape.

Wrap three layers ofwaterproof tape.

Wrap three layers of PVCinsulation tape.

Measure the VSWR of the antenna system before installingan RF jumper. For details, see "Measuring the VSWR of the Antenna System" on page 30.

RF jumper

Take insulation and waterproof measures only for outdoorRF jumpers.

2. Wrap PVC insulation tape.

1. Install RF jumpers.

Waterproof tape

Dustproofcap

Insulating tape

Keep the dustproof caps on vacant feeder connectors. Wrap thefeeder connectors with waterproof tapes for outdoor scenarios, asshown in the figure.

Insulating tape



Measuring the VSWR of the Antenna System

Measure the VSWR of the antenna system using aBroadband Site Master.

Measure the VSWR at the point where the antenna

system is connected to the RF port on the RRU. Connect

the antenna system to the RF port on the RRU only

when the VSWR of the antenna system is lower than 1.5.

Do not connect the antenna system to theRRU if the VSWR of the antenna system ishigher than or equal to 1.5.

Installing an Outdoor Junction Box

RTN(+)

• When the distance between the RRU3232 and the APM30H ranges from 60 m (196'-10 3/16'') to180 m (590'-6 5/8''), install an outdoor junction box on the RRU side.

• Confirm that the cross-sectional area of the power cable between the outdoor junction box and theDCDU or APM30H is 10 mm2 (0.02 in.2 or 7 AWG).

• Confirm that the cross-sectional area of the power cable between the outdoor junction box and theRRU is 3.3 mm2 (0.01 in.2 or 12 AWG), and the length of the cable ranges from 3 m (9'-10 1/8") to5 m (16'-4 3/4'').

Grounding

Connected to anRRU3232

Connected to

-48 V DC power

NEG(-)



No. Item

1 All self-made PGND cables are copper-based and are of the correct wire

diameters. No breaking devices, such as switches and fuses, are allowed for

the electric connection of the grounding system. No short circuits are allowed.Each terminal on the ground bar connects to only one wiring terminal of thePGND cable.

2 The redundant part of the power cable or PGND cable is stripped off.

3 The terminals at both ends of the power cable or PGND cable are securelysoldered or crimped.

4 The bare wires and the terminal handles of the wiring terminals are coated withheat shrink tubings.

5 The flat washer and the spring washer are securely mounted on all OTterminals.

6 All cables, especially those at the bottom of the cabinet, are securelyconnected.

7 All cables are neatly and tightly bound. The cable ties are evenly spaced andface the same direction.

8 The power cable, PGND cable, feeder, optical fiber, and E1/T1/FE signal cableare bound separately with a minimum spacing of 3 cm (1 3/16").

9 The cable layout facilitates future maintenance and capacity expansion, andthe cable radii meet the requirements.

10 Labels at both ends of a cable are legible.

11 The extra length of the cable ties is cut and removed. The cut surfaces aresmooth and have no sharp edges.

12 The vacant connectors for the cables are properly protected.

Installation Checklist for the BBU



Upgrade the software and deliverthe configuration using a USB

disk

Start the project self-test functionon the Web LMT

Save the report

End

Is the test successful? Power off the BS and check thehardware installation

Start

Power on the BS

Prepare a USB disk

Yes

No

Power on the BS

32

No. Item

1 The RRU and its mounting kits are securely installed.

2 The cover plate is securely installed on the RRU cabling cavity.

3 Waterproof blocks are installed in vacant cable troughs of the RRU cablingcavity. The cover plate of the cabling cavity is securely installed. The vacantRF ports are waterproofed and covered with waterproof caps.

4 The power cable and PGND cable are intact.

5 The terminals at both ends of the power cable or PGND cable are securelysoldered or crimped.

6 The flat washer and the spring washer are securely mounted on all OTterminals.

7 The power cable and the PGND cable are intact and correctly connected.They are not short-circuited.

8 The power cable, PGND cable, feeder, optical fiber, and E1/T1/FE signalcable are bound separately with a minimum spacing of 3 cm (1 3/16").

9 The signal cables are not damaged or broken, and the connectors are intact.

10 Labels at both ends of each cable are correct, legible, and complete.

Installation Checklist for the RRU

Checklist for the Project Implementation

Perform a self-checkafter the project iscomplete.

For details about the procedures, see

the online help after logging in to theWeb LMT.



Appendix

Hoist the RRU3232 and mount ing k its onto a tower.

Bind the RRU and the mounting kits using a sling.

• Protect the RRU from colliding with the tower whenhoisting it.

• Ensure that the diameters for the lifting sling and tractionsling are about 20 mm (0 13/16'') and are less than 25 mm(0 1").

• Ensure that the ropes bear a weight more than four timesthe weight of an RRU.

• Installation engineer A climbs the tower, secures a fixedpulley to the support on the tower platform, and then

inserts a lifting sling through the fixed pulley.• Installation engineer C ties the RRU and mounting kits

using the lifting sling following the instructions in thefigure, and then ties a knot at the RRU handle using atraction sling.

• Installation engineer B pulls down the lifting sling.Installation engineer C pulls out the traction sling toprevent the RRU and the mounting kits from collidingwith the tower.

• Installation engineer A holds on to the RRU and themounting kits, and then loosens the knot to release theitems.

• The previous hoisting method is for reference only.

Do not lift the RRU by thehandle only.

Lifting sling

Lower edge of theattachment plate

Traction sling

Fixed pulley

Tractionsling

Lifting sling

Hoisting the RRU3232 and Mounting Kits onto a Tower a



Indicator b

a

b

Indicators on the BBU LMPT

Indicators at CPRI ports on the BBU LBBP



c Indicators on the RRU3232



Preparing OT Terminals for a DCDU Power Cabled

Lead the wires

made of the

shielding layers

through heat-

shrinkable tubes.

Wrap the PVCinsulating tape

at the joint

where the three

wires meet.OT terminal on

the shielding

layer

36



Installing a Ground Clipe

Wrap three layers of tape following the sequence shown in the above figures. When wrapping tape, be surethat each layer of tape overlaps more than 50% of the preceding layer.

The other end of the ground cable connecting to the ground clip is terminated with a one-hole OT terminal withan M8 bolt, and is connected to an external ground bar.

1. Strip a sheath of 32 mm (1 1/4" ) from an RRU power cable using a wire stripper.

2. Install a ground clip on the exposed shield layer, and tighten the screws on the

ground clip.

• Ensure that the exposed shield layer must be longer than a ground clip.

• Do not clip the shield layer of an RRU power cable to a ground clip.

4. Wrap the ground clip using PVC

insulation tape.

3. Wrap the ground clip us ing

waterproof tape.

Groundcable

Ground clip

RRU powercable

37



Huawei Technologies Co., Ltd.Huawei Industrial Base Bantian Longgang

Documents

SingleRAN WiMAX-LTE Quick Installation Guide(Co-RRU3232)(V100R002C00_Draft a)(PDF)-En