Huawei Technologies RRU3931E Remote Radio Unit User Manual Installation Guide

Huawei Technologies Co.,Ltd Remote Radio Unit Installation Guide

user manual rru3931e installation guide

RRU3931EV100R011C10Installation GuideIssue Draft ADate 2016-03-30HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2016. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.All other trademarks and trade names mentioned in this document are the property of their respectiveholders. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial BaseBantian, LonggangShenzhen 518129People's Republic of ChinaWebsite: http://www.huawei.comEmail: support@huawei.comIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.i
Contents1 RRU3931E Installation Guide..................................................................................................... 11.1 Changes in RRU3931E Installation Guide.....................................................................................................................41.2 Installation Preparations................................................................................................................................................. 41.2.1 Installation Environment............................................................................................................................................. 41.2.2 Reference Documents..................................................................................................................................................51.2.3 Tools and Instruments..................................................................................................................................................51.2.4 Skills and Requirements for Installation Personnel.....................................................................................................61.2.5 Installation Scenarios...................................................................................................................................................71.2.6 Installation Clearance Requirements........................................................................................................................... 81.3 Unpacking Inspection..................................................................................................................................................... 91.4 Obtaining the SN.......................................................................................................................................................... 111.5 Installation Process....................................................................................................................................................... 111.6 Installing a RRU3931E.................................................................................................................................................121.6.1 Mounting Kits............................................................................................................................................................121.6.2 Installing a RRU3931E on a Pole..............................................................................................................................141.6.3 Installing a RRU3931E on a Wall............................................................................................................................. 171.7 Installing Cables........................................................................................................................................................... 211.7.1 Cabling Requirements............................................................................................................................................... 211.7.2 Cable Connections.....................................................................................................................................................231.7.3 Opening the Maintenance Cavity Covers..................................................................................................................241.7.4 Installing a Power Cable............................................................................................................................................251.7.5 Installing an CPRI Fiber Optic Cable........................................................................................................................271.7.6 (Optional) Installing an CPRI Fiber Optic Cable for Cascading...............................................................................291.7.7 Closing the Maintenance Cavity Covers................................................................................................................... 301.7.8 Installing a PGND Cable........................................................................................................................................... 311.7.9 (Optional) Installing an RF Jumper........................................................................................................................... 331.8 (Optional)Replacing the Internal Antenna with External Antennas.............................................................................361.9 Checking the Hardware Installation............................................................................................................................. 411.10 Performing a Power-On Check...................................................................................................................................421.11 References...................................................................................................................................................................431.11.1 Assembling a Shielded RJ45 Connector and an Ethernet Cable............................................................................. 431.11.2 Checking the Appearance of Metal Contact Strips..................................................................................................471.11.3 Testing the Connection of Assembled Cables......................................................................................................... 49RRU3931EInstallation Guide ContentsIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.ii
1.11.4 Assembling a Tool-less Female Connector (Pressfit Type) and a Power Cable......................................................531.11.5 Small Cell Engineering Label..................................................................................................................................561.11.6 Attaching a Sign Plate Label................................................................................................................................... 571.11.7 SN Collection Template...........................................................................................................................................59RRU3931EInstallation Guide ContentsIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.iii
1 RRU3931E Installation GuideIntroductionThis document describes how to install a RRU3931E in different scenarios and provides thehardware installation checklist as a reference.Product VersionThe following table lists the product versions related to this document.ProductNameSolution Version Product VersionRRU3931E lSRAN11.1 and later versionslRAN18.1 and later versionsleRAN11.1 and later versionsV100R011C10 and later versions Intended AudienceThis document is intended for:lRRU3931E installation engineerslSystem engineerslSite maintenance engineersOrganization1.1 Changes in RRU3931E Installation Guide1.1 Changes in RRU3931E InstallationGuideThis section describes the changes in RRU3931E Hardware Description.1.2 Installation Preparations1.2 Installation PreparationsThis section describes the preparations for installation. Before starting the installation, youmust get the installation environment ready, obtain the required reference documents, tools,and instruments, and familiarize yourself with the skills required.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.1
1.3 Unpacking Inspection1.3 Unpacking InspectionThis section describes how to unpack and check the delivered materials to ensure that all thematerials are included and intact.1.4 Obtaining the SN1.4 Obtaining the SNThis section describes how to obtain the serial number (SN) of a RRU3931E. Beforeinstalling the RRU3931E, record its SN for future use during commissioning.1.5 Installation Process1.5 Installation ProcessThis section describes the process for installing a RRU3931E. The process includes:lInstalling a RRU3931ElInstalling cableslChecking the hardware installationlPerforming a power-on check1.6 Installing a RRU3931E1.6 Installing a RRU3931EThis section describes the procedure and precautions for installing a RRU3931E.1.7 Installing Cables1.7 Installing CablesThis section describes the procedure and precautions for installing cables.en-us_topic_0027706033.xmlen-us_topic_0027706033.xmlThis section describes the procedure and precautions for adjusting the installation angles of aRRU3931E.1.9 Checking the Hardware Installation1.9 Checking the Hardware InstallationThis section describes how to check the hardware installation after a RRU3931E is installed.1.10 Performing a Power-On Check1.10 Performing a Power-On CheckThis section describes the procedure for performing a power-on check on a RRU3931E.1.11 References1.11 ReferencesThis section describes reference information and common operations involved duringinstallation.1.1 Changes in RRU3931E Installation GuideThis section describes the changes in RRU3931E Hardware Description.1.2 Installation PreparationsThis section describes the preparations for installation. Before starting the installation, youmust get the installation environment ready, obtain the required reference documents, tools,and instruments, and familiarize yourself with the skills required.1.3 Unpacking InspectionThis section describes how to unpack and check the delivered materials to ensure that all thematerials are included and intact.1.4 Obtaining the SNThis section describes how to obtain the serial number (SN) of a RRU3931E. Beforeinstalling the RRU3931E, record its SN for future use during commissioning.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.2
1.5 Installation ProcessThis section describes the process for installing a RRU3931E.1.6 Installing a RRU3931EThis section describes the procedure and precautions for installing a RRU3931E.1.7 Installing CablesThis section describes the procedure and precautions for installing cables.1.8 (Optional)Replacing the Internal Antenna with External AntennasThis section describes how to replace the RRU3931E internal antenna with external antennas.1.9 Checking the Hardware InstallationThis section describes how to check the hardware installation after a RRU3931E is installed.1.10 Performing a Power-On CheckThis section describes the procedure for performing a power-on check on a RRU3931E.1.11 ReferencesThis section describes reference information and common operations involved duringinstallation.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.3
1.1 Changes in RRU3931E Installation GuideThis section describes the changes in RRU3931E Hardware Description.Draft A (2016-03-30)This is a draft.1.2 Installation PreparationsThis section describes the preparations for installation. Before starting the installation, youmust get the installation environment ready, obtain the required reference documents, tools,and instruments, and familiarize yourself with the skills required.1.2.1 Installation EnvironmentBefore starting the installation, ensure that the power supply equipment, transmissionequipment, and related matching equipment are ready.Precautions for Site SelectionlDo not install a RRU3931E near an interference source, such as a broadcast andtelevision tower, high and low-voltage substation, high-voltage tower, high-power radiotransmitter, and radar station.lFor the sake of surge protection, the mounting height of a RRU3931E should not begreater than 10 m. Do not install a RRU3931E along a highway or railway or on themountain top, tower, standalone pole in a suburban area or open field, or standalonerooftop in a non-urban area.Requirements for the Upper-level Circuit BreakerSlow-blow fuses of the gL (DIN VDE)/gG (IEC) class in accordance with IEC60269-1 arerecommended. Fuses of the same specifications must be configured for L and N wires for thesake of O&M security.Type C bipolar circuit breakers in accordance with IEC60934 are recommended. Circuitbreakers must be configured for L and N wires for the sake of O&M security.Table 1-1 describes the recommended specifications.Table 1-1 Requirements on the upper-level circuit breakers and power cablesPower Supply Current of the Upper-level AC CircuitBreakers (or Fuses)Cross-Sectional Area ofthe Input Power Cable220 V AC single-phase lMinimum value: 5 AlRecommended value: 16A1.5 mm2 to 2.5 mm2110 V AC dual-live-wireRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.4
Power Supply Current of the Upper-level AC CircuitBreakers (or Fuses)Cross-Sectional Area ofthe Input Power Cable110 V AC single-phase lMaximum value: 20 A NOTElThe requirements provided in the preceding table are based on the peak power of a RRU3931E anddo not represent power consumption when the RRU3931E is running.lMinimum value: Ensures that a RRU3931E can work normally under normal circumstances.However, lightning strikes or abnormal voltage fluctuations may trip the circuit breaker or melt thefuse.lRecommended value: Ensures that a RRU3931E can work normally under normal circumstancesand that the circuit breaker does not trip in the event of lightning strikes or abnormal voltagefluctuations.lMaximum value: Indicates the maximum rated current allowed in the product design.Requirements for Surge Protection and GroundingHuawei by default uses a three-core power cable to connect a RRU3931E and external powersupply equipment. The power supply side must ensure that the PE wire of the three-corepower cable can be properly grounded. In outdoor installation scenarios or outdoor cablingscenarios, PGND cables must be used to guarantee the surge protection and grounding for theground terminals of the mounting kits.Requirements for power supplyDuring installation, power off the RRU3931E.1.2.2 Reference DocumentsThis section describes reference documents required for installation.Before starting the installation, you must be familiar with the following reference documents:lSafety InformationlRRU3931E Hardware Description1.2.3 Tools and InstrumentsBefore starting the installation, prepare the following tools and instruments.Marker (diameter ≤ 10 mm) Hammer drill (Ø12 bore) Rubber malletRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.5
Level Torque screwdriverPhillips (M3, M4)Flat-head (M6, M8)Torque wrenchCable cutter Wire stripper COAX crimping toolCrimping tool for powercablesRJ45 crimping tool Diagonal pliersHeat gun Utility knife MultimeterESD gloves Vacuum cleaner Measuring tape 1.2.4 Skills and Requirements for Installation PersonnelInstallation personnel must be qualified, trained, and familiar with correct operation methodsand safety precautions before performing any operations.Before starting the installation, pay attention to the following items:lThe customer's technical engineers must be trained by Huawei and be familiar with theproper installation and engineering methods.lThe number of required installation personnel depends on the engineering schedule andinstallation environment. Generally, three to five installation personnel are necessary.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.6
1.2.5 Installation ScenariosThe RRU3931E can be installed on a pole or a wall.Pole-mounted InstallationA RRU3931E can be installed on a pole with a diameter of 60 mm to 381 mm.Figure 1-1 illustrates a pole-mounted RRU3931E.Figure 1-1 Pole-mounted installation(1) RRU3931E (2) Attachment plate (3) Mountingbracket(4) Steel belt Wall-mounted InstallationIn wall-mounted installation scenarios, note the following:lThe wall has a capacity of bearing at least four times the weight of the RRU3931E to beinstalled without damage.lExpansion bolts must be torqued to 28 N·m to ensure the bolts work properly withoutcausing cracks on the wall.Figure 1-2 illustrates a wall-mounted RRU3931E.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.7
Figure 1-2 Wall-mounted installation(1) RRU3931E (2) Attachment plate (3) Mounting bracket 1.2.6 Installation Clearance RequirementsThis section describes the clearance requirements for installing a RRU3931E on a pole orwall.Figure 1-3 shows the recommended installation clearances around a RRU3931E.Figure 1-3 Recommended installation clearances around a RRU3931ERRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.8
Figure 1-4 shows the minimum installation clearances around a RRU3931E.Figure 1-4 Minimum installation clearances around a RRU3931E1.3 Unpacking InspectionThis section describes how to unpack and check the delivered materials to ensure that all thematerials are included and intact.PrerequisitesNOTICEAfter a RRU3931E is unpacked, power it on within 24 hours. If the RRU3931E is poweredoff for maintenance, restore power to it within 24 hours.ContextNOTEWhen transporting, moving, or installing the equipment, components, or parts, you must:lPrevent them from colliding with doors, walls, shelves, or other objects.lWear clean gloves, and avoid touching the equipment, components, or parts with bare hands, sweat-soaked gloves, or dirty gloves.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.9
ProcedureStep 1 Check the total number of articles in each packing case against the packing list.If... Then...The total number tallies with the packinglistGo to Step 2The total number does not tally with thepacking listFind out the cause and contact the localHuawei office. Step 2 Check the exterior of each packing case.If... Then...The outer packing is intact Go to Step 3.The packing case is severely damaged orsoakedFind out the cause and contact the localHuawei office. Step 3 Check the type and quantity of the equipment in each packing case against the packing list.If... Then...The type and quantity tallies with thepacking listSign the Packing List with the customer.There is any shipment shortage or wrongshipmentFill in and submit the Cargo Shortage andMishandling Report.There is damaged shipment Fill in and submit the Article ReplacementReport. NOTICETo protect the equipment from damage, keep the unpacked equipment and packing materialsindoors. To help find out the cause of any damage in the future, take photos of the storeroom,rusted or eroded equipment, packing cases, and packing materials, and then file the photos.----EndRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.10
1.4 Obtaining the SNThis section describes how to obtain the serial number (SN) of a RRU3931E. Beforeinstalling the RRU3931E, record its SN for future use during commissioning.ContextThe SN uniquely identifies a device and is required during commissioning. The SN label of aRRU3931E is attached to the surface of the RRU3931E.ProcedureStep 1 Remove the backup SN label from the surface of the RRU3931E. See Figure 1-5NOTEBefore removing the backup SN label, photograph it.Figure 1-5 Removing the SN label(1) Backup SN label - Step 2 Record the SN by using the template described in section 1.11.7 SN Collection Template,and report it to the RRU3931E commissioning personnel.----End1.5 Installation ProcessThis section describes the process for installing a RRU3931E.The process includes:RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.11
lInstalling a RRU3931ElInstalling cableslChecking the hardware installationlPerforming a power-on checkFigure 1-6 outlines the process for installing a RRU3931E.Figure 1-6 Process for installing a RRU3931E1.6 Installing a RRU3931EThis section describes the procedure and precautions for installing a RRU3931E.1.6.1 Mounting KitsThis section describes the kits for mounting a RRU3931E on a pole or wall.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.12
Slim Attachment PlateFigure 1-7 shows the appearance of a slim attachment plate.Figure 1-7 Slim attachment plate(1) RRU3931E (2) Slim attachment plate Mounting BracketFigure 1-8 shows the appearance of a Mounting bracket.Figure 1-8 Mounting bracket(1) Hole for a fasteningscrew(2) Mounting hole for anexpansion bolt(3) Mounting hole for a steelbelt RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.13
1.6.2 Installing a RRU3931E on a PoleThis section describes the procedure and precautions for installing a RRU3931E on a pole.ProcedureStep 1 Route two steel belts separately through the up and down mounting holes on the Mountingbracket, but do not route the steel belts through the buckles. See Figure 1-9.Figure 1-9 Routing steel belts(1) Visible window NOTEBefore installing a steel belt, check the rotation axis from the visible window. If the rotation axis is notconnected to the end of the bolt, loose the bolt and adjust the rotation axis to the end of the bolt. Theposition of the rotation axis is shown in Figure 1-11.Step 2 Fit the Mounting bracket onto the target pole. See Figure 1-10.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.14
Figure 1-10 Fitting the Mounting bracket onto the target poleNOTERedundant steel belts must be bound.1. Open the bolt on each steel belt according to the arrow direction on the mounting base,and ensure that the rotation axis is connected to the end of the bolt, as shown in Figure1-11.Figure 1-11 Position of the rotation axis2. Partially tighten each steel belt with the force not less than 50 N, bend it by 180°, andpress the steel belt at turns firmly. See Figure 1-12.Figure 1-12 Tighten steel beltsRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.15
3. Restore the bolt in position on the mounting base of the steel belt. See Figure 1-13.Figure 1-13 Restoring the bolt in position on the mounting base4. Use an M6 hex key screwdriver to torque the bolts to 7 N·m.Check the steel belt installation status from the visible window. If the rotation axis is close tothe end of the bolt, remove the steel belt and fasten it again. See Figure 1-13.Figure 1-14 Check the rotation axis status(1) Rotation axis Step 3 Fit the RRU3931E onto the Mounting bracket, and use an M6 hex key screwdriver to torquethe screw to 5 N·m. See Figure 1-15.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.16
Figure 1-15 Fitting a RRU3931E onto a Mounting bracketNOTICEGently take and fit the RRU3931E onto the Mounting bracket.----End1.6.3 Installing a RRU3931E on a WallThis section describes the procedure and precautions for installing a RRU3931E on a wall.ProcedureStep 1 Place the Mounting bracket against the wall, use a level to verify that the mounting bracket isplaced horizontally, and use a marker to mark anchor points. See Figure 1-16.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.17
Figure 1-16 Marking anchor points(1) Mountingbracket(2) Level (3) Mounting holes (4) Marker NOTICETo prevent inhalation or eye contact with dust, take adequate preventive measures whendrilling holes.Step 2 Drill holes at the anchor points, and install expansion bolts. See Figure 1-17.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.18
Figure 1-17 Drilling holes and installing expansion bolts(1) M10x80expansion bolt(2) Nut (3) Springwasher(4) Flat washer (5) Expansionsleeve 1. Use a hammer drill with Ф12 bore to drill holes vertically at the marked anchor points.Ensure that the holes have the same depth ranging from 55 mm to 60 mm.2. Use a vacuum cleaner to clear the dust from inside and around the holes, and measurethe inter-hole spacing. If the spacing is too wide or too narrow, relocate positions anddrill holes again.3. Partially tighten an expansion bolt and vertically insert it into each hole.4. Use a rubber mallet to hit the expansion bolts until the entire expansion sleeve is in eachhole.5. Remove the M10×80 bolt, nut, spring washer, and flat washer in sequence.NOTICELevel the front of each expansion sleeve with the wall after disassembling an expansion bolt.Otherwise, the mounting bracket will not be securely installed on the wall.Step 3 Fit the Mounting bracket onto the wall through the four expansion bolts, and use an M10socket wrench to torque the four expansion bolts to 28 N·m. See Figure 1-18.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.19
Figure 1-18 Fitting a Mounting bracket onto the wall(1) Nut (2) Spring washer (3) Flat washer (4) Swell fixture Step 4 Fit the RRU3931E onto the Mounting bracket, and use an M6 hex key screwdriver to torquethe screw to 5 N·m. See Figure 1-19.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.20
Figure 1-19 Fitting a RRU3931E onto a Mounting bracketNOTICEThe narrow space of the RRU3931E toward the wall allows you only to fit the RRU3931Eonto the Mounting bracket in barehanded way, instead of using the attachment plate hander.Do gently in the whole process.----End1.7 Installing CablesThis section describes the procedure and precautions for installing cables.1.7.1 Cabling RequirementsCables must be routed according to the specified cabling requirements to prevent interferencebetween signals.NOTEIf a cable listed below is not required, skip the cabling requirements of the cable.General Cabling RequirementsThe bending radius of the cables must meet the following specifications:RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.21
lThe bending radius of a 7/8'' feeder must be greater than 250 mm, and the bending radiusof a 5/4'' feeder must be greater than 380 mm.lThe bending radius of a 1/4'' jumper must be greater than 35 mm. The bending radius ofa super-flexible 1/2'' jumper must be greater than 50 mm, and the bending radius of anordinary 1/2'' jumper must be greater than 127 mm.lThe bending radius of a power cable or PGND cable must be at least five times itsdiameter.lThe bending radius of a fiber optic cable must be at least 20 times its diameter.lThe bending radius of a signal cable must be at least five times its diameter.The cables must be bound as follows:lCables must be bound tightly and neatly. The sheaths of cables must not be damaged.lCable ties must face the same direction, and those at the same horizontal line must be ina straight line. The excess of cable ties must be cut off.lLabels or nameplates must be attached to the cables after they are installed.The cables must be routed as follows:lCables of different types must be routed separately in an untangled and orderly fashion.lCables of different types must be parallel to each other or separated by using dedicatedseparators.lCables must be routed away from sharp objects or wall burrs. If these positions areinevitable, cables must be protected with protection pipes.lCables must be routed away from heat sources, or heat-insulation materials must beadded between cables and heat sources.lSufficient slack must be provided in cables at turns or the position close to a device,facilitating cable and device maintenance. The recommended slack is 0.1 m.lAC power cables and PGND cables must be tubed when routed.lDrip loops must be reserved for cable layout at connection points and thru-wall pointsindoors/outdoors.lAll cables cannot be routed overhead. Cables laid out outdoors should be buried in theground.Special Cabling RequirementsPower cables must be routed as follows:lMultiple power cables must be bound when routed.lPower cables must be installed in the positions specified in engineering designdocuments.lIf the length of power cables is insufficient, the power cables must be replaced instead ofadding connectors or soldering joints to lengthen the cables.lCabling activities require strict organization and coordination, and are allowed onlywhen qualified personnel and communication facilities are available.lCables must be routed in an untangled and orderly fashion.lAC power cables must be tubed when routed.PGND cables must be routed as follows:RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.22
lPGND cables for a RRU3931E must be connected to the same ground bar.lPGND cables must be buried in the ground or routed indoors. They must not be routedoverhead before they are led into the equipment room.lThe exterior of a coaxial wire and the shield layer of a shielded cable must have properelectrical contact with the metal surface of the equipment to which they are connected.lPGND cables and signal cables must be bound separately in an untangled and orderlyfashion. A certain distance must be reserved between them to prevent mutualinterference.lFuses or switches must not be installed on PGND cables.lOther devices must not be used for electrical connections of PGND cables.lAll the metal parts in the housing of the RRU3931E must be reliably connected to theground terminal.lPGND cables must be tubed when routed.Signal cables must be routed as follows:lSignal cables must not cross power cables, PGND cables, or RF cables when routed. Iftransmission cables are routed parallel to power cables, PGND cables, or RF cables, thespacing between them must be greater than 30 mm.lSignal cables must be routed straightly and bound neatly with cable ties.lSufficient slack must be provided in signal cables at turns.Fiber optic cables must be routed as follows:lA minimum of three qualified and trained personnel are required to route fiber opticcables.lThe operating temperature of fiber optic cables ranges from -40oC to +60oC. If thecurrent temperature is out of the range, additional protection measures must be taken orthe cable routing must be changed.lCables must be routed in an untangled and orderly fashion.lFiber optic cables must not be bound at turns.lFiber optic cables cannot be stretched with too much force or stepped on, and they mustbe far away from sharp objects. Heavy objects cannot be placed on fiber optic cables.lWhen fiber optic cables are routed, the excess of the cables must be coiled aroundspecial devices, such as a fiber coiler.lFiber optic cables must be coiled gently and must not be bent in a forcible manner.lVacant optical connectors must be covered with dustproof caps.lFiber optic cables cannot be squeezed by a cabinet door when routed through a cabinet.lWhen routed on the tower platform, the fiber optic cables must be laid out along theguardrail within the shortest distance.lWhen routed close to a device on the tower, the fiber optic cables must be secured to theguard rail or pole with cable clips. The RRU3931E must not be far away from theposition for securing the fiber optic cables.lThe excess of the fiber optic cables must be coiled and secured on the tower.1.7.2 Cable ConnectionsThis section describes the connections of the canles.Figure 1-20 shows the cable connections for a RRU3931E.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.23
Figure 1-20 RRU3931E cable connections(1) PGND cable (2) CPRI fiber opticcable(3) Power cable (4) RF Jumper NOTEWhen routing cables from a maintenance cavity, observe the following:lRoute the power cable through the cable hole on the upper-layer rubber striplRoute the other cables (except power cables) through cable holes on the lower-layer rubber strippreferentiallylRoute cables through cable holes on the same side of ports, and do not cross cables.1.7.3 Opening the Maintenance Cavity CoversThis section describes the procedure and precautions for opening the maintenance cavitycovers of a RRU3931E.ProcedureStep 1 Use an M6 hex key screwdriver to loosen the captive screw on both the maintenance cavitycovers. Open the maintenance cavity covers.Figure 1-21 shows the maintenance cavity structure.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.24
Figure 1-21 Maintenance cavity structure(1) CPRI1 (2) CPRI0 (3) PWR Step 2 Remove the waterproof blocks for the cables to be installed.----End1.7.4 Installing a Power CableThis section describes the procedure and precautions for installing a power cable for aRRU3931E. The power cable connects the RRU3931E and external power supply equipment.ContextTable 1-2 lists the specifications of a power cable.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.25
Table 1-2 Power cable specificationsCable Color One End The OtherEndRemarksInput powercable for aRRU3931EL Brown AC-EPC1connectorDepends onthe externalpowersupplyequipment.Black jacketN BluePE Yellow andgreen NOTEThe color and structure of a power cable varies with countries and regions. A locally purchased powercable must be a pure copper outdoor three-core cable that has a cross-sectional area of 1.5 mm2 to 2.5mm2 and a maximum outer diameter of 8.9 mm to 10.2 mm and complies with local specifications.ProcedureStep 1 Make a power cable.lCut the cable to a length suitable for the actual cable route.lAdd a cord end terminal to one end of the cable by following instructions provided insection 1.11.4 Assembling a Tool-less Female Connector (Pressfit Type) and a PowerCable1.11.4 Assembling a Tool-less Female Connector (Pressfit Type) and a PowerCable. At the other end, add a terminal that matches the external power supplyequipment.Step 2 Installing the power cable. Connect the terminal of the power cable to the PWR port on theRRU3931E. See Figure 1-22.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.26
Figure 1-22 Installing a power cable----EndFollow-up Procedure1. Route the cable by following instructions provided in section 1.7.1 CablingRequirements"1.7.1 Cabling Requirements" and then use cable ties to bind the cable.2. Attach labels to the installed cables by following instructions in 1.11.6 Attaching a SignPlate Label.1.7.5 Installing an CPRI Fiber Optic CableThis section describes the procedure and precautions for installing an CPRI fiber optic cable.ContextlThe single-mode optical modules to be installed must match the data rate at the opticalports.lDo not twist, bend, stretch, or squeeze fiber optic cables during installation.lThe cable route depends on actual requirements.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.27
NOTICELong-time exposure to the air causes performance exceptions on an optical module.Therefore, optical modules must be connected to fiber optic cables within 20 minutesafter being unpacked.ProcedureStep 1 Remove the dustproof cap from the CPRI0 or CPRI1 port. Keep the cap secure.Step 2 Insert an optical module into the CPRI0 or CPRI1 port, and remove the dustproof cap fromthe optical module.Step 3 Remove the dustproof cap from the optical fiber connector, tidy the optical fibers, and insertthe DLC connector into the optical module. See Figure 1-23.Figure 1-23 Installing a fiber optic cable----EndFollow-up Procedure1. Route the cable by following instructions provided in section 1.7.1 CablingRequirements"1.7.1 Cabling Requirements" and then use cable ties to bind the cable.2. Attach labels to the installed cables by following instructions in 1.11.6 Attaching a SignPlate Label.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.28
1.7.6 (Optional) Installing an CPRI Fiber Optic Cable forCascadingThis section describes the procedure and precautions for installing an CPRI fiber optic cableused for cascading two RRU3931Es.ContextlThe single-mode optical modules to be installed must match the data rate at the opticalports.lDo not twist, bend, stretch, or squeeze fiber optic cables during installation.lThe cable route depends on actual requirements.NOTICELong-time exposure to the air causes performance exceptions on an optical module.Therefore, optical modules must be connected to fiber optic cables within 20 minutesafter being unpacked.ProcedureStep 1 For both RRU3931Es, remove the dustproof cap from the CPRI0 or CPRI1 port. Keep the capsecure.Step 2 For both RRU3931Es, insert an optical module into the CPRI0 or CPRI1 port, and remove thedustproof cap from the optical module.Step 3 Remove the dustproof cap from the optical fiber connector, tidy the optical fibers, and insertthe DLC connector into the optical module. See Figure 1-24.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.29
Figure 1-24 Installing a fiber optic cable for cascading----EndFollow-up Procedure1. Route the cable by following instructions provided in section 1.7.1 CablingRequirements"1.7.1 Cabling Requirements" and then use cable ties to bind the cable.2. Attach labels to the installed cables by following instructions in 1.11.6 Attaching a SignPlate Label.1.7.7 Closing the Maintenance Cavity CoversThis section describes the procedure and precautions for closing the maintenance cavitycovers of a RRU3931E.ProcedureStep 1 Insert waterproof blocks into vacant cable troughs in both the cabling holes. See Figure 1-25.CAUTIONEnsure that cables or waterproof blocks are properly inserted into troughs.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.30
Figure 1-25 Checking that vacant cable troughs are properly waterproofedStep 2 Close the maintenance cavity covers of the RRU3931E. Use an M6 hex key screwdriver totorque the screws on the covers to 4.8 N·m. See Figure 1-26.Figure 1-26 Closing the maintenance cavity covers----End1.7.8 Installing a PGND CableThis section describes the procedure and precautions for installing a PGND cable.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.31
ContextThe length of a PGND cable must not exceed 30 m. When the required PGND cable is longerthan 30 m, deploy the ground bar nearer the RRU3931E. Table 1-3Table 1-3 PGND cable specificationsCable One End The Other End ColorPGND cable OT terminal (M6, 6mm2)OT terminal (M8, 6mm2)Yellow and green rocedureStep 1 Make a PGND cable for the RRU3931E.lCut the cable to the required length based on the actual cable route.lAdd an OT terminal to each end of the PGND cable by following instructions providedin section "Assembling the OT Terminal and the Power Cable" of Installation Reference.Step 2 Install the PGND cable.Connect the M6 OT terminal at one end of the PGND cable to the ground terminal at theRRU3931E bottom and the M8 OT terminal at the other end to the external ground bar. SeeFigure 1-27.Figure 1-27 Installing a PGND cableRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.32
NOTEWhen installing the PGND cable, crimp OT terminals in correct positions. See Figure 1-28.Figure 1-28 Crimping an OT terminal----EndFollow-up Procedure1. Route the cable by following instructions provided in section 1.7.1 CablingRequirements"1.7.1 Cabling Requirements" and then use cable ties to bind the cable.2. Attach labels to the installed cables by following instructions in 1.11.6 Attaching a SignPlate Label.1.7.9 (Optional) Installing an RF JumperThis section describes how to install an RF jumper for a RRU3931E. This operation isrequired when the RRU3931E uses an external antenna.ContextlThe cable route depends on actual requirements.lThe RRU3931E RF jumper can connect the RRU3931E and external antenna system, orconnect the RRU3931E and GPS antenna system. The following section takes installingan RF jumper between the RRU3931E and external antenna system as an example.NOTEIt is good practice to use an RF jumper when installing the external antenna system for theRRU3931E. If the RRU3931E RF jumper is not used, install the antenna on the RRU3931Ethrough the normal type N female connector, and waterproof the connector by followinginstructions provided in Step 5.ProcedureStep 1 Remove the plastic waterproof cap from the RF port. See Figure 1-29.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.33
Figure 1-29 Removing a waterproof capStep 2 Connect the Smart-type N male connector at one end of the RF jumper to the RF port on theRRU3931E.When installing an RF jumper, hold tightly the metal part (in the red dotted circle in Figure1-30) of the Smart-type N male connector and push the connector upwards. A slight crackwill be heard when the connector is properly installed. See Figure 1-30.Figure 1-30 Installing an RF jumperNOTICEDo not exert force on the non-metal part, that is, the black part, as shown in Figure 1-30RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.34
Step 3 (Optional) If an RF port is not used, retain and waterproof the waterproof cap on the port.Figure 1-31 Waterproofing a waterproof cap(1) Waterproof cap (2) PVC insulation tape (3) Waterproof tape 1. Verify that waterproof caps are not removed.2. Wrap a layer of PVC insulation tape around the connector from bottom up.3. Tightly wrap three layers of waterproof tape around the connector, with the first layerfrom bottom up, the second layer from top down, and the third layer from bottom up.4. Tightly wrap three layers of PVC insulation tape around the connector with the first layerfrom bottom up, the second layer from top down, and the third layer from bottom up.5. Bundle cable ties 3 mm to 5 mm away from the end of insulating tape.NOTElBefore wrapping waterproof tape, stretch the tape evenly until the length of the tape is twice itsoriginal length.lDo not stretch the PVC insulation tape before wrapping.lWrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tapeoverlaps more than 50% of the preceding layerlEnsure that the side with adhesive tape is covered on the wrapped tape.lWhen cutting off the cable tie, reserve a surplus length of 3 mm to 5 mm.Step 4 Connect the type N male connector at the other end of the RRU3931E RF jumper to the RFport on the external antenna system. See Figure 1-32.Figure 1-32 Connecting an RF jumper to the external antenna systemRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.35
Step 5 Wrap the connector of the RF jumper. See Figure 1-33.Figure 1-33 Wrapping the connector of an RF jumper(1) PVC insulation tape (2) Waterproof tape 1. Wrap a layer of PVC insulation tape around the connector from bottom up.2. Tightly wrap three layers of waterproof tape around the connector, with the first layerfrom bottom up, the second layer from top down, and the third layer from bottom up.3. Tightly wrap three layers of PVC insulation tape around the connector, with the firstlayer from bottom up, the second layer from top down, and the third layer from bottomup.4. Bundle cable ties 3 mm to 5 mm away from the end of the PVC insulation tape.NOTElBefore wrapping waterproof tape, stretch the tape evenly until the length of the tape is twice itsoriginal length.lDo not stretch the PVC insulation tape before wrapping.lWrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tapeoverlaps more than 50% of the preceding layerlEnsure that the side with adhesive tape is covered on the wrapped tape.lWhen cutting off the cable tie, reserve a surplus length of 3 mm to 5 mm.----EndFollow-up Procedure1. Route the cable by following instructions provided in section 1.7.1 CablingRequirements"1.7.1 Cabling Requirements" and then use cable ties to bind the cable.2. Attach labels to the installed cables by following instructions in 1.11.6 Attaching a SignPlate Label.1.8 (Optional)Replacing the Internal Antenna withExternal AntennasThis section describes how to replace the RRU3931E internal antenna with external antennas.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.36
ProcedureStep 1 Remove the RRU3931E antenna connector.When removing a RRU3931E antenna connector, hold tightly the metal parts (red-markedparts in Figure 1-34) of the antenna terminals, and pull down the terminals.Figure 1-34 Removing the antenna connectorStep 2 Remove the screws from the antenna.1. Use an M4 hex key to loosen the three M4x14 screws at the bottom of the RRU3931E.2. Push the RRU3931E antenna downwards, as shown in Figure 1-35.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.37
Figure 1-35 Removing screwsStep 3 Connect the Smart-type N male connector at one end of the RF jumper to the RF port on theRRU3931E.When installing an RF jumper, hold tightly the metal part (in the red dotted circle in Figure1-36) of the Smart-type N male connector and push the connector upwards. A slight crackwill be heard when the connector is properly installed. See Figure 1-36.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.38
Figure 1-36 Installing an RF jumperNOTICEDo not exert force on the non-metal part, that is, the black part, as shown in Figure 1-36Step 4 (Optional) If an RF port is not used, retain and waterproof the waterproof cap on the port.Figure 1-37 Waterproofing a waterproof cap(1) Waterproof cap (2) PVC insulation tape (3) Waterproof tape 1. Verify that waterproof caps are not removed.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.39
2. Wrap a layer of PVC insulation tape around the connector from bottom up.3. Tightly wrap three layers of waterproof tape around the connector, with the first layerfrom bottom up, the second layer from top down, and the third layer from bottom up.4. Tightly wrap three layers of PVC insulation tape around the connector with the first layerfrom bottom up, the second layer from top down, and the third layer from bottom up.5. Bundle cable ties 3 mm to 5 mm away from the end of insulating tape.NOTElBefore wrapping waterproof tape, stretch the tape evenly until the length of the tape is twice itsoriginal length.lDo not stretch the PVC insulation tape before wrapping.lWrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tapeoverlaps more than 50% of the preceding layerlEnsure that the side with adhesive tape is covered on the wrapped tape.lWhen cutting off the cable tie, reserve a surplus length of 3 mm to 5 mm.Step 5 (Optional) If a normal type N female connector is used for the antenna to be installed, performStep 4 to Step 5.Step 6 (Optional) If the DIN-type female connector is used for the antenna to be installed, performthe following steps:1. Connect the DIN male and N female connector to the RF port of the external antennasystem.2. Connect the type N male connector at one end of the RF jumper of the RRU3931E to theDIN male and N female connector.3. Waterproof the port connecting the DIN male and N female connector and the externalantenna system and the port connecting the RF jumper of the RRU3931E and the DINmale and N female connector. See Figure 1-38.Figure 1-38 Waterproofing the ports(1) PVC insulation tape (2) Waterproof tape a. Wrap a layer of PVC insulation tape around the connector from bottom up.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.40
b. Tightly wrap three layers of waterproof tape around the connector, with the firstlayer from bottom up, the second layer from top down, and the third layer frombottom up.c. Tightly wrap three layers of PVC insulation tape around the connector, with the firstlayer from bottom up, the second layer from top down, and the third layer frombottom up.d. Bundle cable ties 3 mm to 5 mm away from the end of the PVC insulation tape.NOTE– Before wrapping waterproof tape, stretch the tape evenly until the length of the tape is twice itsoriginal length.– Do not stretch the PVC insulation tape before wrapping.– Wrap each layer of tape around the connector tightly and neatly, and ensure that each layer oftape overlaps more than 50% of the preceding layer– Ensure that the side with adhesive tape is covered on the wrapped tape.– When cutting off the cable tie, reserve a surplus length of 3 mm to 5 mm.----EndFollow-up ProcedureRoute the cable by following instructions provided in section1.7.1 Cabling Requirements, and then use cable ties to bind the cable.1.9 Checking the Hardware InstallationThis section describes how to check the hardware installation after a RRU3931E is installed.Table 1-4 provides the checklist for the RRU3931E hardware installation.Table 1-4 RRU3931E hardware installation checklistSN Item1 The installation position conforms to the engineering drawing and meets theclearance requirements. Sufficient space is reserved for equipmentmaintenance.2 The RRU3931E is securely installed, and the screws are tightened.3 In wall-mounted scenarios, the mounting holes on the mounting bracket arewell aligned with those of the expansion bolts. In addition, the mountingbracket is secured on the wall evenly and steadily.4 In pole-mounted scenarios, the mounting bracket is secured on the pole.5 The angle adjustment error of the RRU3931E is less than 3° in the horizontaldirection and is not more than 3° in the vertical direction.6 Vacant cable troughs in both maintenance cavities are covered withwaterproof blocks, and the maintenance cavity covers are fastened.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.41
SN Item7 None of power cables and PGND cables are short-circuited, reverselyconnected, damaged, or broken.8 Power cables and PGND cables are separately bound from other cables.9 All modules are connected using equipotential cables and then connected tothe closest ground bar by using PGND cables.10 The connectors of each signal cable are intact and securely linked, and thesecables are not damaged or broken.11 Labels are correct, legible, and complete at both ends of each cable. 1.10 Performing a Power-On CheckThis section describes the procedure for performing a power-on check on a RRU3931E.ContextFigure 1-39 shows the RRU3931E power-on check procedure.Figure 1-39 Power-on checkRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.42
ProcedureStep 1 Check that the cables are correctly connected.Step 2 Check that the input voltage of the RRU3931E is 110 V AC to 240 V AC, and the frequencyranges from 50 Hz to 60 Hz.Step 3 Power on the RRU3931E. Wait 3 to 5 minutes and then observe the indicator status of theRRU3931E. If the RUN indicator blinks (on for 1s and off for 1s) and the ALM indicator isoff, the RRU3931E is working properly.NOTElA RRU3931E takes about 3 minutes to complete the startup procedure, during which the indicatorstatus is negligible.lDuring a startup, a RRU3931E reads and writes the flash memory and therefore the indicatorsblinking quickly may blink irregularly for 1s to 2s, which does not affect services.----End1.11 ReferencesThis section describes reference information and common operations involved duringinstallation.1.11.1 Assembling a Shielded RJ45 Connector and an EthernetCableThis section describes how to assemble a shielded RJ45 connector and an Ethernet cable. Astraight-through cable is used as an example.ContextFigure 1-40 shows the components of an RJ45 connector and an Ethernet cable.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.43
Figure 1-40 Components of an RJ45 connector and an Ethernet cable(1) Core wire (2) Aluminum foil (3) Braided layer(4) Outer jacket (5) RJ45 connector - ProcedureStep 1 Remove the outer jacket (25 mm) of the Ethernet cable, tip the braided layer outwards evenly,and cut off the aluminum foil and guard space. See Figure 1-41NOTICElDo not damage the shield layer when removing the jacket.lDo not damage the insulation layer of the Ethernet cable when removing the shield layer.Figure 1-41 Removing the jacket of an Ethernet cableRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.44
Step 2 Sequence the twisted pair wires neatly by color, and cut the wire end evenly, with a remaininglength of 16 mm. See Figure 1-42.Figure 1-42 Arranging twisted pair wiresTable 1-5 Pin assignmentPin SN Wire Color1 White and orange2 Orange3 White and green4 Blue5 White and blue6 Green7 White and brown8 Brown Step 3 Insert the sequenced twisted pair wires into the RJ45 connector. See Figure 1-43.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.45
Figure 1-43 Inserting wires into the RJ45 connectorNOTICElWhen inserting the wires, ensure that the braided layer that was tipped outwards hasinserted inside the connector.lObserve the side or front of the RJ45 connector to ensure that the core wires are inserted tothe bottom of the RJ45 connector.Step 4 Use a crimping tool to crimp the connector. See Figure 1-44.Figure 1-44 Crimping the connectorStep 5 Use a cable cutter to evenly cut off the protruding braided layer of the connector along thewire holder. See Figure 1-45Figure 1-45 Cutting off the excess braided layer----EndRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.46
1.11.2 Checking the Appearance of Metal Contact StripsThis topic describes how to check the metal contact strips and how to check whether anassembled RJ45 connector is qualified.ContextlTo ensure proper contact between the crimped parts and the core wires, the heights andsizes of the metal contact strips must be uniform and standard.lThe metal contact strips must be parallel to each other, with an offset less than 5°. Thetop margin of a strip must be parallel to the axis of the connector, with an offset less than10°.lTo ensure expedite conduction, the surface of the metal contact strips must be clean.lThe metal contact strips must be in good contact with the RJ45 socket. The plastic septamust remain intact and must be aligned properly.lThe soldering edge of a metal contact strip must surpass the ends of the core wires. Theends of the core wires must be in contact with the edge of the RJ45 trough. In principle,the distance between them must be less than 0.5 mm (0.02 in.).ProcedureStep 1 Hold the crimped connector, with the front side facing you, and check whether the metalcontact strips are of the same height. In principle, the height is 6.02 mm (0.237 in.) ± 0.13 mm(0.005 in.). If a measuring tool is not available, you can compare the connector with astandard connector. Figure 1-46 shows an unqualified piece, and Figure 1-47 shows aqualified piece.NOTEAll unqualified pieces must be crimped again.Figure 1-46 Metal contact strips of different heightsRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.47
Figure 1-47 Metal contact strips of the same heightStep 2 Hold an RJ45 connector and turn it by 45°. Observe the top edges of the metal contact strips.Figure 1-48 shows an unqualified piece.Figure 1-48 Unparallel metal contact strips of different heightsStep 3 Check whether the metal contact strips are clean. If they are not clean and the dirt cannot beremoved, replace it with a new RJ45 connector. Figure 1-49 shows an unqualified piece.Figure 1-49 Dirt on a metal contract stripStep 4 Check whether the metal contact strips and the plastic septa are well aligned and intact. If apart is skewed and it cannot be fixed, replace it with a new RJ45 connector. Figure 1-50shows an unqualified piece.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.48
Figure 1-50 Skew plastic septaStep 5 Hold the connector, with the side facing towards you, and check whether you can see thecross-sections of the core wires. Ensure that the ends of the core wires are in good contactwith the edge of the RJ45 trough, and that the soldering edge of a metal contact stripsurpasses the ends of the core wires and is reliably crimped with the core wires. If not, replaceit with a new RJ45 connector. Figure 1-51 shows an unqualified piece.Figure 1-51 Core wires not in good contact with the edge of the RJ45 trough----End1.11.3 Testing the Connection of Assembled CablesThis topic describes how to test an assembled Ethernet cable, thus ensuring that theconnectors and wires at both ends are correctly connected. This topic illustrates how to test astraight-through cable.ContextHuawei provides two types of Ethernet cables: straight-through cables and crossover cables.lStraight-through cables are connected in a one-to-one manner. They are used to connectnetwork adapters to equipment such as switches or hubs. Table 1-6 lists the connectionsof core wires in a straight-through cable.Table 1-6 Connections of core wires in a straight-through cableRJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not2 2 Orange TwistedRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.49
RJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not1 1 Orange-White6 6 Green Twisted3 3 Green-White4 4 Blue Twisted5 5 Blue-White8 8 Brown Twisted7 7 Brown-White lCrossover cables are connected in a crossover manner. They are used to connect networkadapters to equipment such as switches or hubs. Table 1-7 lists the connections of corewires in a crossover cable.Table 1-7 Connections of core wires in a straight crossover cableRJ45 Connector 1 RJ45 Connector 2 Core Wire Color Twisted or Not6 2 Orange Twisted3 1 Orange-White2 6 Green Twisted1 3 Green-White4 4 Blue Twisted5 5 Blue-White8 8 Brown Twisted7 7 Brown-White Figure 1-52 shows the pins of an RJ45 connector.Figure 1-52 Pins of an RJ45 connectorRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.50
ProcedureStep 1 Feed both connectors of the cable into the ports of the cable tester.Step 2 After the connectors are properly inserted, turn on the tester. If the indicators from 1 to G turnon simultaneously, you can infer that the pins work normally and the wires are correctlyconnected.NOTETurn the switch to the S position and check whether the indicators turn on simultaneously, as shown inFigure 1-53.Figure 1-53 Testing the conduction and connections of wiresStep 3 Gently shake the connector and repeat Step 2 to check whether the metal contact strips are ingood contact with the core wires and Ethernet ports, as shown in Figure 1-54.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.51
Figure 1-54 Checking the reliabilityThe procedure for testing a crossover cable is the same as that for testing a straight-throughcable except for the sequence in which the indicators turn on. You need to refer to the wireconnections of a crossover cable.The Ethernet cable is qualified if the indicators turn on in the following sequence:At the master (left) section of the tester, the indicators turn on in the sequence of 1-8-G. At theslave (right) section of the tester, the indicators turn on in the sequence of 3-6-1-4-5-2-7-8-G.Otherwise, the Ethernet cable is unqualified.NOTEIf a tester is not available, you can use a multimeter to perform a simple test, as shown in Figure 1-55.Figure 1-55 Testing the connection of an Ethernet cableRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.52
----End1.11.4 Assembling a Tool-less Female Connector (Pressfit Type)and a Power CableThis section describes the procedure for making a tool-less female connector (pressfit type)for a RRU3931E power cable.ContextDANGERStrictly follow the procedure described herein to make a tool-less female connector (pressfittype). Any incompliance may cause damage to the RRU3931E or personal injuries.Figure 1-56 shows the scale for making a power cable for the RRU3931E.Figure 1-56 RRU3931E power cable-making scale(1) RRU3931E power cable-making scale ProcedureStep 1 Unwind the required length of the power cable for different operations based on the scale. SeeFigure 1-57Figure 1-57 Determining the power cable lengthStep 2 Remove the outer jacket of the power cable. See Figure 1-58RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.53
Figure 1-58 Removing the outer jacket of a cableStep 3 Remove the outer jacket of each core wire. The length of the removed outer jacket mustmatch the tool-less female connector (pressfit type). See Figure 1-59.Figure 1-59 Removing the outer jacket of core wiresStep 4 Use PVC insulation tapes to wrap the outer jackets of the three core wires and the adjacentsection of the AC power cable. See Figure 1-60.Figure 1-60 Insulating a power cableNOTEIt is good practice to wrap the three core wires for 16 mm and the adjacent section of the AC powercable section for about 10 mm.Step 5 Assemble a tool-less female connector (pressfit type) and the three core wires. See Figure1-61.RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.54
Figure 1-61 Adding a tool-less female connector (pressfit type) to core wires1. Push the sliding block on the connector outwards along the arrow direction.2. Use an M3 Phillips torque screwdriver to loosen the two screws.3. Use the M3 Phillips torque screwdriver to loosen the screw on the other side.4. Insert the brown core wire into the L port, the blue core wire into the N port, and theyellowish green core wire to the PE port.DANGEREnsure that the positive and negative wires of all power cables are correctly connected.Any incorrect power cable connection (such as reverse polarity connection) may causedamage to equipment or unexpected personal injuries.5. Use the M3 Phillips torque screwdriver to torque the screw to 0.5 N·m.6. Use the M3 Phillips torque screwdriver to torque the two screws on the other side to 0.5N·m.7. Push the sliding block back in position along the arrow direction.8. Use cable ties to bind the core wires to the connector.Step 6 Gently pull each core wire to check that the connections are secure. The core wires canremain fastened under external force of 30 N. Ensure that all copper wires are inserted into thewiring terminal sockets and no copper wire is exposed outside the connector.----EndRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.55
1.11.5 Small Cell Engineering LabelThis section describes the content and presents the exterior of Small Cell engineering labels.Label ContentThe Small Cell engineering labels include the power label, ground label, alarm label, antennasystem label, optical transmission label, FE/GE electrical port label, and GPS label.The labels are printed before delivery. Therefore, writing or printing is not required on site.Table 1-8 describes the content of engineering labels.Table 1-8 Small Cell Engineering Label ContentLabel Content Description Corresponding port onthe base stationPowerlabelSmall CellxPWRLabel for the BTSx powercable.PWRGroundlabelSmall CellPGNDxLabel for the BTS groundcable or equipotential cable.AlarmlabelSmall CellxEXT-ALMLabel for the BTSx alarmcable.EXT-ALMSmall CellxDBGLabel for the BTSx alarmcable.DBGAntennasystemlabelSmall Cellx, , , Label for the BTSx TX/RXantenna port. , , , Opticaltransmission labelSmall CellxFE/GE2Label for the BTSx fiberoptic cable.FE/GE2Small CellxFE/GE3FE/GE3FE/GEelectricalport labelSmall CellxFE/GE0Label for the BTSx Ethernetcable.FE/GE0Small CellxFE/GE1FE/GE1GPSlabelSmall CellxGPSLabel for the BTSx GPScable.GPS RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.56
NOTElIn the label content, Small Cell identifies a Huawei micro base station.lFor a single base station, only labels with Small Cell or Small Cell0 are used.lFor two base stations at the same site: If UMTS and LTE base stations are located at the same site,you are advised to label the UMTS base station as Small Cell0 and the LTE base station as SmallCell1. If two base stations work in the same mode, label the one directly connected to externaldevices as Small Cell0 and the cascaded one as Small Cell1.Label StructureFigure 1-62 shows the structure of a Small Cell engineering label.Figure 1-62 Label structure1.11.6 Attaching a Sign Plate LabelThis section describes the procedures and precautions for attaching a sign plate label.ContextlThis section applies to Huawei sign plate labels. If other engineering labels inaccordance with local standards are used on site, follow the local standards for attachingsign plate labels.lA sign plate label is usually used for a power cable, ground label, signal cable, andantenna. This section uses 1.11.5 Small Cell Engineering Label as an example.ProcedureStep 1 Lead the cable ties through the holes of a label, and then bind the label to the cable, as shownin Figure 1-63. Ensure that the cable ties are led through the holes of the label in the samedirection.Figure 1-63 Binding the labelRRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.57
(1): Cable tie (2): Label (3): Cable NOTEYou should use an outdoor cable tie with a appropriate width in outdoor scenarios (the default is blackcable tie with 3.6 mm or 0.14 in. width).lThe position for banding the label is recommended from 20 mm to 100 mm (0.79 in. to3.94 in.) away from the cable connector. Ensure the front of the label facing you and notbe covered.lIn case of both ports of the cable connected have different silkscreen, both ends of thecable should bind the port label on the two ends of cable. For example, in dual BTSscascading scenarios, one end of the cascading FE/GE cable is connected to LAN1 porton BTS0, and the other end connected to WAN port on BTS1. At this point, both ends ofthe cable should band two labels Micro BTS0 LAN1 and Micro BTS1 WAN. As shownin Figure 1-64, the distance between the two labels is recommended from 10 mm to 20mm (0.39 in. to 0.79 in.).Figure 1-64 Positions for banding labelsNOTEYou may change the positions for attaching labels in actual situations. For example, you can bind a labelwhere the cable is bent.Step 2 Tighten the cable tie, securing the label on the cable, and then cut off the extra part of thecable tie, as shown in Figure 1-65.Figure 1-65 Securing the label on the cable(1): Cable tie (2): Cable (3): Label RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.58
NOTElWhen you bind a label, ensure that the side with characters faces outwards.lEnsure that the labels are attached in an orderly and neat manner. When you cut a cable tie, keep asurplus length of 5 mm to 10 mm (0.20 in. to 0.39 in.).----End1.11.7 SN Collection TemplateThis section describes the SN collection template for RRU3931Es.The SN collection template is used to record information of RRU3931Es at the initialinstallation stage to facilitate subsequent commissioning and maintenance. Table 1-9Table 1-9 SN collection templateNo. SiteNumberSite Name BaseStation SNODM04ASNLocationInformationSample xx RRU3931E xx floor, xxbuilding, xxmansionNOTEThe SN collection template defines the radio network to access and is essential to engineering andsubsequent maintenance, especially when multiple devices are installed at a short distance. Carefullymaintain this template. RRU3931EInstallation Guide 1 RRU3931E Installation GuideIssue Draft A (2016-03-30) Huawei Proprietary and ConfidentialCopyright © Huawei Technologies Co., Ltd.59

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