Huawei Technologies RRU3201-700M Distributed Base Station Remote Radio Unit User Manual Installation Guide 2

Huawei Technologies Co.,Ltd Distributed Base Station Remote Radio Unit Installation Guide 2

Contents

Installation Guide 2

15Installing the RRU CablesbOpen the cover plate of the RRU cabling cavity Cover plate of the cabling cavityCabling cavityCable trough for the optical cableCCabling Cavity of the RRUCable trough for the power cableWaterproof fillerdCable Connections of the RRUShielding layer of the power cable StrapWaterproof tapeGrounding screwOT terminalPGND cable
16Installing the RRU CablesdCable Connections of the RRUFor details on how to add the OT terminals to the power cable, see pages 22 to 23 Adding OT Terminals to the Power Cable of the RRU.For details installing the Optical Module, see page 24 Installing the Optical Module.eClose the cover plate of the RRU cabling cavity1.4N•mzWhen wrapping the waterproofing tape, apply even force to extend the tape until the width of the tape is 1/2 of the original width. zWrap the joint spirally upward, downward, and then upward again. In other words, the joint is wrapped by three layers of the tape. Ensure that the upper layer of the tape covers about half of the lower layer when wrapping up the tape. zDo not remove the dustproof cap from the idle antenna port. Perform the waterproof, dustproof, and smokeprooftreatment if necessary. Use the waterproof tape to wrap the joints in outdoor applications.zUse the power cable clip to press the shielding layer tightly and ensure that the lower part of the shielding layer does not exceed the position shown in the preceding figure. zThe grounding resistance of the PGND cable should be less than 10 ohms. The PGND cable cannot be connected to the grounding terminal.zGround the shielding layer of the other end of the power cable.zAfter the cables are installed on the RRU, insert the waterproofing fillers into the idle cable holes.1. The screw on the cover plate is tightened until the fastening torque is 1.4 N• m.2. The screws on the cover plate are tightened in the order shown in the preceding figure.
17Installing the RRU CablesfRRU+APM30HRRU power cableCPRI optical cable1. The RRU power cable is connected to one group of the RRU0 to RRU5 terminals of the PDU.2. Strip the jacket off the RRU power cable for a small part, press the exposed shielding layer on the strap, and then connect the PGND cable on the strap to the nearest grounding bolt on the side in the APM30/APM30H.RRU power cable25mmMetal shielding layer(25mm)ababgRRU+TMC/TMC11HThe RRU power cable is connected to LOAD0 to LOAD5 on the DCDU-03C. LOAD0RRU power cableCPRI optical cable25mmMetal shielding layer(25mm)Grounding the shielding layer of the power cable:Grounding the shielding layer of the power cable:abab
18Installing the RRU CableszThe RRU power cable is connected to LOAD0 to LOAD5 on the DCDU-03C. RRU power cableCPRI optical cableBBU power cablecdabhRRU+19-Inch cabinetLOAD0zAt the end of the RRU power cable connected to the DCDU-03C, you need to make the shielding layer of the power cable into an OT terminal, and then connect the OT terminal to the PGND terminal of the corresponding port on the DCDU-03C. For details about making an OT terminal, see pages 26 and 27. zThe RRU power cable is connected to LOAD0 to LOAD5 on the DCDU-03C. RRU power cableCPRI optical cableababiRRU+BBU Installed Against the WallRRUBBUPGND cableabcddab
19RRU Hardware Installation ChecklistNo joint lies in the middle of the power cable or the PGND cable.5The connectors of signal cables are intact and securely linked. And the signal cables are not damaged or broken.10All labels, tags, and nameplates are correct, legible, and complete. All the labels at both ends of the cables, jumpers and feeders should match.11The operating grounding and protection grounding of the base station and the lightning protection grounding of the building share one group of grounding conductors.9The power cable, PGND cable and other cables need to be bound separately.8The power cable and PGND cable are not short-circuited or reversely connected and are not damaged or broken.7The lugs at both ends of the power cable or the PGND cable are securely soldered or crimped.6Waterproof check: The empty cable troughs in the cabling cavity of the RRU are waterproofed. The cover plate is tightly buckled on the cabling cavity of the RRU. The RF ports that are not connected with RF cables are capped and waterproofed. The waterproof caps are fastened. 4The cover plate is fastened to the RRU cabling cavity.3The RRU is properly installed.2The position for each equipment conforms to the engineering design and meets the space requirement. Sufficient space is reserved for equipment maintenance.1ItemsNo.The RRU should be powered on in 24 hours after being unpacked. The power off duration of the RRU cannot exceed 24 hours during maintenance.Powering On the RRUCheck whether the input voltage of the RRU is normal?Power on the RRUStartEndaYesPower off the RRURectify the faultbCheck whether the status of the LEDs on the RRU is normal?NoYesNoRectify the faultaNormal input voltage of the RRU:If the BBU is supplied with -48 V DC power, the external input power voltage ranges from -57 V DC to -36 V DC.Normal status of the LEDs on the RRU:RUN LED: ON for 1s and OFF for 1sALM LED: OFFb
20ReferenceLift the RRU and installation components to the tower.aSteering ropeLifting ropezWhen lifting the RRU to the tower, avoid collision of the RRU with the tower.zLift the RRU to the tower before it is installed on the metal pole, angle steel, or U-steel. Lower part of the adapting piece Do not fix only the handle of the RRU to the lifting rope. 1. Lead the lifting rope along the lower part of the adapting piece and then bind the RRU by using the lifting rope at the handle of the RRU. Bind the main fixture and auxiliary fixture by using the lifting rope. Bind the handle of the RRU by using the pulling rope. See the following figure.
21ReferenceLift the RRU and installation components to the tower.a2. Lift the RRU and installation components to the tower.zInstaller A climbs up to the tower, installs the fixed pulley on the support of the tower platform, and then leads the lifting rope through the fixed pulley. zInstaller C binds the RRU and installation parts using the lifting rope and fixes the handle of the RRU to the pulling rope. zInstaller B pulls the lifting rope downwards. At the same time, installer C pulls the steering rope outwards to avoid collision of the RRU with the installation parts or tower. zInstallers A catches the RRU and installation parts and then loosen the rope. zOn a tower, multiple RRUs cannot be installed in centralized mode. Fixed pulleySteering ropeLifting rope
22Reference1. OT terminals on the power cable:To assemble the OT terminals, perform the following steps:Adding OT Terminals to the Power Cable of the RRUbDetermine lengths of power cables for different operations according to the scales on the inner side of the cover plate of the cabling cavity.Based on the determined length, remove the jacket and shielding layer off the power cable.Remove the jacket of a specified length from each wire.Add an OT terminal to each wire.Remove about 15 mm jacket off the power cable to expose the shielding layer.-48 V DC power cableShieldinglayer GND wire-48 V power wireOT terminal15mm8mm14mm0 10203040
23ReferenceAdding OT Terminals to the Power Cable of the RRUb2.Assemble an OT terminal on the power cable at the end connecting to the power supply device.Stripped shielding layer in the heat-shrinkable tubePVC insulating tape OT terminal on the shielding layerDetermine the length on site. The recommended length is 150 mm.
241. The waterproof tape should be wrapped for an extra length of 20 mm away from the connectors at both ends. 2. The tapes are wrapped around the connector from the lower part to the upper part. When wrapped for another layer, the tapes may not be cut off.3. Apply average force to pull the tape until the width of the tape is 1/2 of the original width before wrapping up the waterproofing tape.4. Ensure that the upper layer of the tape covers over 50% of the lower layer when wrapping up the tape.5. The Insulation tape should be wrapped for an extra length of 20 mm away from the edge of the waterproof tape at both ends.6. Make sure that the last layer of the waterproof tape is wrapped from lower part to the upper part so that the rain flows along the wrapped waterproof tape.Waterproof tapeInsulation tape1. Wrap up the connectors with three layers of waterproofing tape2. Wrap up the connectors with three layers of Insulation tapeTightly pressed the tapeTightly pressed the tapeUse cable ties to fasten both ends of the tapes.Cable tieCable tieWaterproofing the outdoor cablescReferenceInstalling the optical Module d
25ReferencePin Assignment of the RRU AISG Extension cablefBrown+24VTwisted pairWhite/brownX2.6X1.6RS485 AGreenX2.5X1.5RS485 BTwisted pairWhite/greenX2.3X1.3OrangeDC Return ATwisted pairWhite/orangeX2.7X1.7Blue+12VTwisted pairWhite/blueX2.1X1.1InstructionWire TypeWire ColorPin of the AISG female connectorPin of the AISG male connectorPin Assignment for the Wires of the RRU Alarm CablegAPM TX+X9Twisted pairBrownRS485_RX+X1.3-X8X7X6X5X4X3X2Cord End Terminal---X1.shellAPM TX-ShieldWhite/brownRS485_RX-X1.5APM RX+GreenRS485_TX+X1.8APM RX-Twisted pairWhite/greenRS485_TX-X1.6GNDOrangeGNDX1.4SWITCH_INPUT1+Twisted pairWhite/orangeSWITCH_INPUT1+X1.7GNDBlueGNDX1.4SWITCH_INPUT0+Twisted pairWhite/blueSWITCH_INPUT0+X1.2LabelWire TypeWire ColorPin NameDB9 waterproof Connector
26Change History01 (2009-06-05)This is the draft release.This describes the changes in the RRU3201 V100R001C01 Installation Guide
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