2DT2 RAN BTS3900 Installation Training

Security Level: 2012/9/3

2Degrees Tier2 ProjectBTS3900A & DBS3900

INTERNAL

HUAWEI TECHNOLOGIES CO., LTD.

www.huawei.com

Huawei Confidential

Infratel & Skycom training

Contents

1. Site configuration and cabinet layout

2. Hardware description

3. Hardware installation

4. Operation & Maintenance

Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. Page1

5. Acceptance test

Contents






5. Acceptance test

1. Site type D

RFCG900 2/2/2G1800 2/2/2

RFCU2100 1/1/1

APM30HIBBS200D


RTN 900

900

900

1800

1800

1800

2100

2100

2100

2. Site type DU Inline


3. Site type DU Stacked


MRFU

MRFU

MRFU

2100

2100

2100

4. Site type DF Inline

RRU U2100

MRRU GU900


5. Site type DF Stacked


6. Site type DR Inline

APM30HRFCGU900

Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved.

MRFU

MRFU

MRFU

7. Site type DR Stacked


MRFU

MRFU

MRFU

7. Antenna Wiring - Site type D


8. Antenna Wiring - Site type DF






9. Antenna Wiring - Site type DU


10. Antenna Wiring - Site type DR


11. BBU configuration


11. BBU configuration MRFU

slot 0/1/2WRFU

slot 3/4/5

U2100

U900

G900


U2100

U900

G900

11. BBU configuration


Contents






5. Acceptance test

1. Cabinets


1. Advanced Power Module (APM30H)2. Outdoor Radio Frequency Cabinet (RFC)3. Battery Cabinet (IBBS200D)

APM30H RFC IBBS200D

2. APM30H

No. ModuleOptional/

MandatoryDescription

1 Fan box Mandatory

The fan box is configured with the fan, Hert Power Monitoring

Interface unit (HPMI), and Central Monitoring Unit type A (CMUA).

It is used to dissipate heat in the cabinet.

2 SLPU MandatoryThe Signal Lightning Protection Unit (SLPU) is installed in the top 1 U

space of the cabinet

3 PSU MandatoryThe power supply unit (PSU) converts 220 V AC power into -48V DC

power.

4 EPS subrack MandatoryThe EPS provides functions of AC and DC power distribution for the

cabinet.


5 BBU3900 MandatoryThe BBU3900 processes the baseband signals and enables

interaction between the base station and the BSC or RNC.

6 EMUA Optional

The Environment Monitoring Unit (EMUA) monitors the internal

environment of the cabinet and reports related alarms.

The EMUA must be configured when 16 Boolean alarm inputs are

required. It is installed in the 1 U space below the BBU.

7 PMU Mandatory

The Power Monitoring Unit (PMU) provides the functions of power

system and battery management, power monitoring, and alarm

reporting.

8 Heater Optional A heater is an optional component.

9 SOU Optional It transfers AC power supply to the customer equipment.

3. RFC


No. ModuleOptional/


1 DCDU-01 MandatoryThe Direct Current Distribution Unit-01 (DCDU-01) is a DC power distribution

unit supplying power to each component in the RFC.

2 Fan box Mandatory

The fan box is configured with the fan and CMUA. The fan dissipates heat in the

cabinet, and the CMUA provides the functions of the temperature control,

Boolean alarm detection.

3 RFU Mandatory

Radio Frequency Unit, performs the functions such as modulation and

demodulation between baseband signals and RF signals, data processing, and

signal combination and division.

3. IBBS200D


No. ModuleOptional/


1 Fan MandatoryThe FAN is installed on the front door of the cabinet, dissipating

heat in the cabinet.

2 CMUA MandatoryThe CMUA provides the functions of the temperature control,

Boolean alarm detection.

3

Power

distribution

box

Mandatory

The power distribution box is installed on the upper right of the

cabinet, transferring and distributing power to the fan and to the

batteries.

4. BBUParameter Counter

Dimensions (width x height x depth)

442 mm (19 inch) x 86 mm (2U) x 310 mm

Weight ≤ 12 kg

Working environment The BBU is used for indoor applications or is put in an outdoor cabinet.

Working voltage -48V DC (-38.4V DC – -57V DC)

Module Name Description

FAN Fan (mandatory)


UPEU Power board. One UPEU is required.

UEIU Universal EMU (optional)

UTRP Universal transmission processing unit (optional)

WMPT Main control board of the UMTS system.

Mandatory in the UMTS mode.

WBBP Baseband board of the UMTS system. Mandatory

in the UMTS mode.

GTMU Main control board of the GSM system.

Mandatory in the GSM mode.

UBRI Universal baseband radio interface board that

provides extended optical or electrical CPRI

4. BBU - GTMU

Label Connector Type Description

CPRI0 to CPRI5 SFP connector Ports for the communication between the BBU and the RF module. It supports the input and

output of the optical or electrical signals.

ETH RJ-45 connector Used for local maintenance and commissioning.


ETH RJ-45 connector Used for local maintenance and commissioning.

FE0 RJ-45 connector Reserved for connecting the BBU to a routing device in the equipment room through the

Ethernet cable to transmit network information.

FE1 DLC connector Reserved for connecting the BBU to a routing device in the equipment room through the

optical cable to transmit network information.

USB USB connector Reserved for software upgrade performed automatically from a USB disk.

TST USB connector Providing the reference clock for the tester

E1/T1 DB26 female connector Used for input and output of four E1/T1 signals between the GTMU and the UELP or the

BSC.

4. BBU - WMPT

Label Connector Type Description

E1/T1 DB26 connector E1 port

FE0 RJ-45 connector FE electrical port


FE0 RJ-45 connector FE electrical port

FE1 SFP connector FE optical port

GPS SMA connector Connected to the GPS antenna

ETH RJ-45 connector Used for commissioning

USB USB connector USB loading port

TST USB connector USB commissioning port

RST - Hardware reset button

4. BBU - WBBP

Lable Connector Type Rate


Lable Connector Type Rate

CPRI0 to

CPRI2

SFP connector The data transmission rate between the CPRI port and the RFU is 1.25 Gbit/s.

4. BBU - UPEU

Port Connector Type

Description

MON0 RJ-45

connector

Provides the input and output of the externally

collected environment monitoring signals in the


connector collected environment monitoring signals in the

format of the RS485 frame for the GTMU or WMPT

MON1 RJ-45

connector

Provides the input and output of the externally

collected environment monitoring signals in the

format of the RS485 frame for the GTMU or WMPT

EXT-ALM0 RJ-45

connector

Transmits the externally collected environment

monitoring signals in the format of the dry contact

signals for the GTMU or WMPT.

EXT-ALM1 RJ-45

connector

Transmits the externally collected environment

monitoring signals in the format of the dry contact

signals for the GTMU.

PWR 7W2 connector � Leads the –48 V DC input (UPEA).

� Leads the +24 V DC input (UPEB).

4. BBU - PMU

Port Function

RS232/RS422 port Communicates with the upper-level unit. The upper-

level unit is determined by actual requirements, for


level unit is determined by actual requirements, for

example, the BBU.

Battery control switch The power-on and power-off operations are controlled

through the ON and OFF buttons.

The battery is connected if the ON button is held down

for 5 to 10 seconds.

The battery is disconnected if the OFF button is held

down for 5 to 10 seconds.

Power supply test port –48 V and 0 V test ports, through which a multimeter

can test the power supply voltage.

COM port Connects to the external signal transfer board.

Backplane port Connects to the backplane.

5. RFU

Port Label Connector Type Description

Port for transceiving

RF signals

ANT_RXB DIN connector Connecting to the antenna

system

ANT_TX/RXA DIN connector

CPRI port CPRI0 SFP female connector Connecting to the BBU, or the

upper-level MRFU during the

cascading

CPRI1 SFP female connector Connecting to the lower-level

MRFU during the cascading

Module Description

MTRU Multi Band Radio Filter Unit (GU900)

WTRU WCDMA Band Radio Filter Unit (U2100)


MRFU during the cascading

Interconnection port for

RF RX signals

RX_INB QMA female connector Input port for diversity receive

RX_OUTA QMA female connector Output port for main receive

Power supply socket PWR 3V3 power socket Feeding power

Monitoring port MON RJ-45 connector Port for monitoring and

maintenance

6. RRU


RRU 3804 (U2100)

MRRU 3809 (GU900)

Contents






5. Acceptance test

Installation Tools

Hammer drill (with bit 14) Vacuum cleaner

Rubber hammer

ESD gloves

Heat gun

Flat-head screwdriver

(M3~M6)

Wire stripper

Phillips screwdriver

(M3~M6)

Crimping pliers

1. Tools

Copyright © 2010 Huawei Technologies Co., Ltd. All rights reserved. 33

5mm

M3~M6

Multimeter

Guarded blade utility knife

Wire stripper

Wire cutter Adjustable wrench

(with the diameter of at least 32 mm)

Measuring tape

Level

Marking pen

(with the diameter of no more than 10 mm)

Combination wrench(21mm~21mm) for pole installation

(17mm~17mm) for wall installation

Torque wrench

Crimping pliers

Torque screwdriver

2. DU Site Install Procedure


2. Installation Clearance Requirements

480mm>300mm

>60mm

>300mm

30mm

Cabinet

600mm 600mm30mm

600mm

Cabinet Cabinet


>800mm

Maximum 100°

2. Installing Base Measurement


1. According to the engineering drawing and installation clearance requirements, determine the position for installing a cabinet.

2. On the concrete pad, mark holes to determine the installation position of the base.3. After marking all the holes, use the measuring tape to check whether the distances

between the holes are accurate.

2. Installing Base Drilling hole


1. Use a hammer drill with bit 16 to drill holes at the anchor points, and ensure that the depth of each hole ranges from 52 mm to 60 mm.

2. Use a vacuum cleaner to clear the dust inside and around the holes. If the inter-hole spacing is too wide or too narrow, locate and drill holes again.

3. Slightly tighten the expansion bolt, and then put the expansion bolt assembly into the hole vertically.

4. Use a rubber mallet to hammer the expansion bolt until the expansion tube is buried into the hole, and then tighten the bolt.

5. Remove the bolt, spring washer, and flat washer counterclockwise.

2. Installing Base Install the expansion bolts


Align the base, and then install the bolt with the spring washer and flat washer

2. Installing Base Level the base


Use a level to check the base level. If the base is not level, use adjusting pads to adjust the base level

2. Installing Base Tighten the expansion bolts


Use a torque wrench to tighten the bolts with the tightening torque of 45 N·m

2. Installing Base Remove the front panel of the base


Loosen the three screws on the front cover plate of the base, and then remove the front cover plate

2. Installing Base Remove the baffle plates


Remove the baffle plate from either side of the base.

3. Installing Cabinet APM30H / IBBS


1. Lift the cabinet onto the base, and then gently push the cabinet to align the cabinet with the base.

2. Use four M12x30 bolts to secure the cabinet on the base.

3. Installing Cabinet RFC

Installation block on the base

Installation block in the cabinet


1. Fix the mounting block on the base. 2. Lift the RFC cabinet onto the base, and then gently push the RFC cabinet

to align the cabinet with the base.

3. Installing Cabinet RFC


Use two M12x30 bolts to secure the cabinet on the base

3. Installing Cabinet stacked cabinet

Remove the plastic screws (x4) from the top of the lower cabinet.

Remove the cover plates (×2) from the top of the lower cabinet.

Stack the cabinets, and attach the cabinets with the bolts(×4).

Gasket with an oblong hole


M12x30 Blot (x4)

To ensure the waterproof performance of the cabinet, keep well the cover plates for the round hole of the cabinet.

Gasket with an oblong hole

Cover plate

4. Earth Grounding the Cabinets


When installing the equi-potential cable, keep the crimping tube of the OT terminal in the direction

4. Earth Grounding the Cabinets Inline Mode


Connect the other end of the PGND cable to the external grounding copper bar

4. Earth Grounding the Cabinets Inline Mode


Connect the other end of the PGND cable to the external grounding copper bar

4. Earth Grounding the Cabinets Stacked Mode

APM30HAPM30H

Grounding bar


RFCRFC

PGND cable (16 mm2)

Equipotential cable (16 mm2)

Grounding busbar

5. Installing the Cable Outlet Module for the Cabinet

RFC


You must lead the cables through the cable outlet modules at both sides of the bottom of the cabinet for effective sealing during the cable installation.


TMC11H


There is a cable outlet module at both left and right sides of each TMC11H cabinet or IBBS200D/IBS200T or AMP30H.


Lead the cable through the cable hole that matches the cross-sectional area of the cable in order that the sealing is effective.

Install the cable according to the size of the cable hole (The following takes the seal modules in RFC as an example).


Seal the idle holes with rubber caps

Tighten the screw.

6. Replacing the Fuse Remove the extraction tool

When certain power equipment, which has high current requirements, is connected to a DC output port on the EPS subrack, the fuse on the port need to be replaced if it cannot meet the high-current requirement.


1. Wear an ESD wrist strap or a pair of ESD gloves.2. Take the extraction tool out of the mounting ear on the right side of the EPS subrack.

6. Replacing the Fuse

EPS

EPS

Align the bulge on the extraction tool with the hole on the fuse

Fuse

Fuse


EPS

Remove the fuse by using the extraction tool

Insert a new fuse

7. Installing cables General Cabling Requirements

The cables must be bound as follows:1. Different types of cables must be separately routed and cannot be entangled. 2. The cables must be bound tightly and neatly. The sheaths of the cables must not be

damaged. 3. The cable ties must face the same direction, and those at the same horizontal line must

be in a straight line. Extra length of cable ties must be cut. 4. Labels or nameplates must be attached to the cables after they are installed.

The cables must be routed as follows:1. Different types of cables must be separately routed with a minimum space of 30 mm

(1.18 in.) between every two cables.


(1.18 in.) between every two cables. 2. Different types of cables must be installed in an untangled and orderly fashion. 3. Different types of cables must be routed in parallel or separated by special objects.

7. Installing cables Special Cabling Requirements

Cabling requirements for power cables are as follows:1. -48 V power cables must be bound together. 2. Power cables, transmission cables, and signal cables are routed separately. 3. Power cables must be installed in the position specified in engineering design

documents. 4. If the length of power cables is insufficient, replace the cables rather than adding

connectors or soldering joints to lengthen the cables.

Cabling requirements for PGND cables are as follows: 1. PGND cables for the base station must be connected to the same ground bar. 2. Fuses or switches must not be installed on the PGND cables.


2. Fuses or switches must not be installed on the PGND cables. 3. All the metal parts in the housing of the equipment must be reliably connected to the

ground terminal.

Cabling requirements for optical fibers are as follows: 1. Do not stretch, step on, or place heavy objects on optical fibers. Keep the fibers away

from sharp objects. 2. When optical fibers are routed, the extra length of the fibers must be coiled around

special devices, such as a fiber coiler. 3. When coiling optical fibers, apply even strength. Do not bend the fibers with force. 4. Vacant optical connectors must be covered with dustproof caps.

7. Installing the Input Power Cable for the APM30H

Prepare the input power cable for the APM30H.

1. Cut the cable to the required length based on the actual cable route.


1. Cut the cable to the required length based on the actual cable route. 2. Add OT terminals to both ends of the cable.



1. Use a Phillips screwdriver to remove the upper and lower screws from the AC baffle plate, and then remove the AC baffle plate.

2. Use a Phillips screwdriver to remove the screw from the protecting hood for the AC input wiring terminals, and then open the protecting hood.

3. Route the cable into the cabinet along the left side and connect each wire of the power cable to the corresponding terminal. 4. Reinstall the protecting hood for the AC input wiring terminals. 5. Reinstall the AC baffle plate. 6. Route the cable and then use cable ties to bind the cable. 7. Run each cable that leaves the cabinet in the PVC corrugated pipe, and then tie the pipe to the cable hole in the cabinet.



8. Installing the Power Cable between APM30H and RFC






1. One end connects the 120 connector. 2. The other end connects the DCDU-01/INPUT/RTN(+) & NEG(-) interface in the RFC cabinet.

9. Installing Power Cables Between the APM30H and the IBBS200D

1. Link the power series 120 connector at one end of the power cable for the batteries to the power supply terminal on the right in the APM30H, and then respectively link the OT terminals on the red and black wires at the other end to the RTN(+) and NEG(-) wiring terminals near the BTA label on the top of the power distribution box in the IBBS200D near the APM30H.

2. Install the power cable for the cascaded batteries if the configuration proportion of APM30Hs and IBBS200Ds is 1:2.


of APM30Hs and IBBS200Ds is 1:2. Respectively link the OT terminals on the red and black wires at both ends of the power cable for the cascaded batteries to the RTN(+) and NEG (-) wiring terminals near the BTA label at the bottom of the power distribution box in the two IBBS200Ds.

9. Installing Power Cables Between the APM30H and the IBBS200D For FAN

1. Link the easy power receptacle (pressfit type) connector at one end of the power cable for the fan in the IBBS200D to the DC output terminal labeled LOAD3 on the right of the EPS subrack in the APM30H, and then link the OT terminals on the black and blue wires at the other end to the RTN(+) and NEG(-) wiring terminals near the TEC/FAN label on the top of the power distribution box in the IBBS200D near the APM30H.

2. Install the power cable for the cascaded fans in the IBBS200Ds if the


fans in the IBBS200Ds if the configuration proportion of APM30Hs and IBBS200Ds is 1:2. Respectively link the OT terminals on the red and black wires at both ends of the power cable for the cascaded fans in the IBBS200Ds to the RTN(+) and NEG(-) wiring terminals near the TEC/FAN label at the bottom of the power distribution box in the two IBBS200Ds.

9. Installing Power Cables Between the APM30H and the IBBS200D

For heating film1. Link the OT terminals on the brown and

blue wires at one end of the power cable for the heating film in the IBBS200D to the L2 and N2 terminals in the junction box on the left of the APM30H, and then respectively link the OT terminals on the brown and blue wires at the other end to the L and N wiring terminals in the junction box for the heating film on the left of the IBBS200D near the APM30H.

2. Install the power cable for the heating film in a second IBBS200D if the configuration proportion of APM30Hs


configuration proportion of APM30Hs and IBBS200Ds is 1:2. Respectively link the OT terminals on the brown and blue wires at one end of the power cable for the heating film in the IBBS200D to the L1 and N1 terminals in the junction box on the left of the APM30H, and then respectively link the OT terminals on the brown and blue wires at the other end to the L and N wiring terminals in the junction box for the heating film on the left of the second IBBS200D.

9. Installing Power Cables Between the APM30H and the IBBS200D Stacked Mode





The power box of the heating film

� Prevent the wires from exposing out of the power box of the heating film.


� Must route the power cables for the heating films in the IBBS200Ds into the power box of the heating film from the top down.

The power box of the heating film

10. Installing transmission Cables


11. Installing Signaling Cables

If a BTS3900A is configured with 1 IBBS200D/IBBS200T + 1 APM30H + 1 RFC, two monitoring signal cables are required, that is, CMUA-BBU monitoring signal cable (RFC) and the CMUA cascaded monitoring signal cable (IBBS-APM30H).

Install the CMUA-BBU monitoring signal cable (RFC)1. One end connects the MON0 interface on

the UPEU board in APM30H BBU. 2. The other end connects the COM_IN

interface on the CMUA board in the fan box


interface on the CMUA board in the fan box of RFC.



Install the CMUA cascaded monitoring signal cable (IBBS-APM30H)1. One end connects the COM_485 interface on the PMU module in the expanded APM30H. 2. The other end connects the COM_IN interface on the CMUA board on the expanded

IBBS200D/IBBS200T.



Install the CMUA-BBU monitoring signal cables in APM30H.1. One end connects the COM_IN interface on the CUMA board. 2. The other end connects the MON1 interface on the UPEU board of BBU.

12. Installing RF Jumper

1. Link the DIN connector of the jumper to the ANT port on the panel of the RFU.

2. Use a 32 mm torque wrench to fix the two DIN connectors from bottom to top. Ensure that the tightening torque reaches 25 N·m to 35 N·m.

3. Lead RF jumpers through corresponding cable holes, and then install the cable outlet module on the bottom of the


module on the bottom of the cabinet.

4. Use rubber caps to seal the idle cable holes in the cable outlet module.

5. Insert the metal piece, and then tighten the screw.

13. Installing CPRI cables

When the cabinet is delivered with boards, the CPRI cables inside the cabinet are installed at delivery. The CPRI cables between the cabinets must be installed on site.

1. Remove the dustproof bag from the connector at each end of the CPRI cable.

2. Insert the SFP connector at one end of the CPRI cable into the CPRI port on the board panel of the BBU.

3. Route the other end of the CPRI cable out of the cabinet along the


cable out of the cabinet along the RF cable through the cable hole on the left of the APM30H, and then route the CPRI cable into the RF cabinet. Then, route the CPRI cable to the corresponding RFU.

4. Insert the SFP connector at the other end of the CPRI cable into the CPRI0 port on the RFU panel.

13. Installing CPRI cables

Slot 0~2 MRFU Slot 3~5 WRFU

BBU RFU

CPRI0 WBBP Slot 3 (U2100 S1) <---------> CPRI0 WRFU Slot3



CPRI0 WBBP Slot 2 (U900 S1) <---------> CPRI1 MRFU Slot0





CPRI0 WBBP Slot 5&6 (G900 S1) <---------> CPRI0 MRFU Slot0



14. Installing the Batteries and Related Cables

EPS

� During the installation of the batteries, use insulated tools such as wrenches and screwdrivers, and do not reversely connect the positive and negative poles. Otherwise, the batteries may burn, and the operations may cause human injuries.

� Before installing the batteries, set the battery MCB labeled BAT to OFF to disconnect the equipment from the battery.


Install the batteries from bottom to top and from left to right.

Battery MCB labeled BAT

14. Installing the Batteries and Related Cables Securing the baffle plate


1. Loosen the three screws on the baffle plate. 2. Move the baffle plate upward until it touches the screws. 3. Tighten the screws to secure the baffle plate until the tightening torque reaches 1.2

N·m (10.62 lbf·in.).

14. Installing the Batteries and Related Cables power cable for the batteries


1. Remove the protecting hood from the electrical pole of the battery. 2. Install the series connection copper bar on the electrical poles of neighboring battery cells. 3. Install the cables for the batteries. The red cable is the power cable for the positive pole,

and the black cable is the power cable for the negative pole.

15. Installing the PMU & PSU checking DIP switch

If one PMU is configured, bit 1 and bit 2 of the DIP switch is set to ON and the other bits are set to OFF.If two PMUs are configured and two monitoring signals of the PMUs are connected to the


If two PMUs are configured and two monitoring signals of the PMUs are connected to the MON0 or MON1 port on the UPEU/UEIU panel on the BBU, the settings of the DIP switch on the first PMU is the same as that when a single PMU is configured; bit 3 of the DIP switch on the second PMU is set to ON, and the other bits are set to OFF.If one monitoring signal is connected to the MON0 port and the other signal is connected to the MON1 port, the settings of the DIP switches on the PMUs can be the same. For details, see the settings of a single PMU.

15. Installing the PMU & PSU

Installing PSUsInstalling a PMUOne power cabinet can only be configured with one PMU.


16. Installing RRU (3908 DC)


On a metal pole On a wallOn an angle steelOn a U-steel


63mm

～

80mm

50 mm to 100 mm

30 m

m to 5

0 m

m

The following figure describes the specifications for the metal pole, angle steel, and U-steel where the RRU is installed.

U-steel

60 mm to 114 mm(The recommended value is 80 mm.)

Metal pole


The brackets cannot be combined when the RRUs are installed on the wall.


≥300 mm ≥600 mm ≥600 mm 100 mm 400 mm 400 mm

≥300 mm 200 mm

a bRecommended Horizontal Spacing for Two RRUs Installed in Parallel

Minimum Horizontal Spacing for Two RRUs Installed in Parallel

c dRecommended Vertical Spacing for Two RRUs Installed in Parallel

Minimum Vertical Spacing for Two RRUs Installed in Parallel


≥500 mm

≥500 mm

300 mm

300 mm

16. Installing RRU (3908 DC) Preparing the Installation

Dual-nut bolt

Auxiliary bracket Cover plate Attachment plate


Main bracket

Main and auxiliary brackets for the RRU

Front Back

16. Installing RRU (3908 DC) Installing a Single RRU on a Metal Pole

1. Install the main bracket.

When installing the main bracket, ensure that the contact piece on the bracket is fixed.


1200mm～1600mm


Fasten the two dual-nut bolt assemblies alternatively. After the brackets are secure, use a tape to measure the spacing between the main bracket and the auxiliary bracket at the two

2. Use an adjustable wrench to tighten the nut until the fastening torque is 40 N·m. In this way, the

main and auxiliary brackets are secured on the pole.


40N•m between the main bracket and the auxiliary bracket at the two sides and ensure that the spacing is the same.


3. Install the RRU on the main bracket. When you hear click sound,

you can infer that the RRU is in position.

Click


16. Installing RRU (3908 DC) Installing Two RRUs Back-To-Back on a Metal Pole

1. Install an RRU

2. Install the main fixture for another RRU.



M6X16

3. Reinstall the attachment plate and cover plate on the second RRU by

interchanging their positions.


5N•m


In standard mode

In reverse mode4. Install the second RRU on the main bracket.

Ensure that the cabling cavities of the two RRUs face the same direction when installing the RRUs.


Cabling cavity

RRUs.

16. Installing RRU (3908 DC) Installing Multiple RRUs in Centralized Mode

5N•m

M6X16

1. Relocate the attachment plate.

3. Install the second main fixture.2. Fit the tabs on the attachment plate of the


3. Install the second main fixture.2. Fit the tabs on the attachment plate of the

RRU into the anchor slots on the main fixture.

16. Installing RRU (3908 DC) Installing Multiple RRUs in Centralized Mode

4. Fit the tabs on the attachment plate of

the second RRU into the anchor slots on

the second main fixture.

5. Install the third RRU.


16. Installing RRU (3908 DC) Installing RRU on the wall

1. Place the auxiliary bracket at the installation position. Use a level to check that the

auxiliary bracket is placed horizontally. Then, mark the anchor points by using a

marking pen.

128 mm

126.5 mm

Auxiliary bracket

126.5 mm


1200 mm～1600 mm

RRU


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

assemblies.

Ø14

90°55 mm to 60 mm

M10x65 bolt

Spring washer 10

Plastic tube

Flat washer 10

Expansion tube

Do not hammer the bolt entirely into the wall. Instead, leave 20 mm to 30 mm of the bolt outside the wall.


After the expansion bolt is removed, dispose of the plastic tube.

20 mm to 30 mm

the wall.


3. Fit the auxiliary bracket on the expansion bolts

downward, and then tighten the bolts by using a combination wrench 17 mm.

4. Install the main bracket.


30N•m

M10

Arrows are upwards


5. Install the RRU.


16. Installing RRU (3908 DC) Cable Connections of Multiple RRUs


This figure shows only the CPRI optical cable connections. For details on the connections of other cables, see the cable connections for a single RRU.


a Opening the Cover Plate of the RRU Cabling Cavity

1. Use a Phillips screwdriver to unfasten the screw for protecting the cabling cavity.

2. Open the cover for the cabling cavity by lifting the handle on the cover.


M4

Screw for protecting the cabling cavity


b The Cabling Cavity of the RRU

Cover plate ofthe cabling cavity

Cabling cavity


Cable trough for the power cable

Cable trough for the optical cable

Waterproof filler

Cabling cavity

Reference for makingthe power cable

Cable trough for the optical cable

cable clip




DC RRU power cable

CPRI optical cable

Metal Shielding layer (25 mm) PGND cable


Contents






5. Acceptance test

1. LMT connection


2. Log into NodeB

User Name: adminPassword: NodeB


3. Main Window


4. Query alarm


5. Query bar code


6. Query OM channel


7.Software upgrade


8.Download Configuration file


Contents






5. Acceptance test

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Documents

2DT2 RAN BTS3900 Installation Training