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Figure 7-3

Cable connections for multiple RRUs (1)

(1) PGND cable

(2) RRU RF jumper (3) RRU alarm cable

(4) CPRI fiber optic cable/SFP high-speed cable for cascaded
RRUs

(5) RRU power cable -

NOTE

If you must cascade two or more RRUs in the same cell, for example, when expanding capacity, install the
alarm cable to the last RRU.

Figure 7-4

shows the cable connections for multiple RRUs when the RET function is performed.

RRU3232
Installation Guide

7 Installing RRU Cables

Issue 05 (2011-10-20)

Huawei Proprietary and Confidential

Summary of Contents for RRU3232

Page 1: ...RRU3232 Installation Guide Issue 05 Date 2011 10 20 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...be within the purchase 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 or representations of any kind either express or implied The information in this document is subject to change without notice Every effort has been made in the preparation of this document to ensu...

Page 3: ... Guide 2 Installation Preparations This chapter describes the reference documents tools and instruments that must be ready before the installation In addition it specifies the skills and prerequisites that installation engineers must have 3 Information About the Installation Before installing an RRU you must be familiar with its exterior ports installation options physical supports and installatio...

Page 4: ...eceptacle pressfit type connector Conventions Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Indicates a hazard with a high level of risk which if not avoided will result in death or serious injury Indicates a hazard with a medium or low level of risk which if not avoided could result in minor or moderate injury Indicates a potentially h...

Page 5: ... brackets and separated by vertical bars One item is selected or no item is selected x y Optional items are grouped in braces and separated by vertical bars A minimum of one item or a maximum of all items can be selected x y Optional items are grouped in brackets and separated by vertical bars Several items or no item can be selected GUI Conventions The GUI conventions that may be found in this do...

Page 6: ...erations The mouse operations that may be found in this document are defined as follows Action Description Click Select and release the primary mouse button without moving the pointer Double click Press the primary mouse button twice continuously and quickly without moving the pointer Drag Press and hold the primary mouse button and move the pointer to a certain position RRU3232 Installation Guide...

Page 7: ...ple RRUs 18 3 5 3 Installation Spacing Between RRUs 22 4 Unpacking the Equipment 25 5 Installation Process 27 6 Installing the RRU 28 6 1 Mounting Kits for an RRU 30 6 2 Installing the RRU on a Pole 30 6 2 1 Installing a Single RRU 33 6 2 2 Installing Two RRUs 35 6 2 3 Installing Multiple RRUs 38 6 3 Installing the RRU on U steel 41 6 4 Installing the RRU on Angle Steel 44 6 5 Installing the RRU o...

Page 8: ...an RRU power cable 74 7 11 Installing a CPRI Fiber Optic Cable 76 7 12 Installing an SFP High Speed Cable for Cascading RRUs 78 7 13 Closing the Cover Plate of an RRU Cabling Cavity 79 8 Checking the RRU Hardware Installation 82 9 Powering On an RRU 83 10 Appendix 84 10 1 Adding an Easy Power Receptacle Pressfit Type Connector to the RRU Power Cable on the RRU Side 85 RRU3232 Installation Guide Co...

Page 9: ...2011 09 15 this issue omits the following topic l Installing an SFP high speed cable for cascaded RRUs 04 2011 09 15 This is the fourth official release Compared with issue 03 2011 07 15 this issue does not add any information Compared with issue 03 2011 07 15 this issue incorporates the following changes Topic Change Description 9 Powering On an RRU Optimized the description of the RRU power on c...

Page 10: ...rior Compared with issue 01 2011 05 15 this issue does not remove any information 01 2011 05 15 This is the first official release Compared with draft A 2011 03 15 this issue does not add any information Compared with draft A 2011 03 15 this issue incorporates the following changes Topic Change Description Installing an RRU RF Jumper Optimized the procedure for waterproofing the connectors on the ...

Page 11: ...issue does not remove any information Draft A 2011 03 15 This is the draft RRU3232 Installation Guide 1 Changes in the RRU3232 Installation Guide Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 3 ...

Page 12: ...liar with reference documents 2 2 Tools and Instruments All tools and instruments required for RRU installation must be ready before the installation 2 3 Skills and Requirements for Onsite Personnel Onsite personnel must be qualified and trained Before performing any operation onsite personnel must be familiar with correct operation methods and safety precautions RRU3232 Installation Guide 2 Insta...

Page 13: ...e IFS06 the following reference document is required l DBS3900 ICR Installation Guide 2 2 Tools and Instruments All tools and instruments required for RRU installation must be ready before the installation Hammer drill a φ 14 bit ESD gloves Vacuum cleaner Heat gun Phillips screwdriver M3 to M6 Flat head screwdriver M3 to M6 Rubber mallet COAX crimping tool Wire stripper Utility knife Cable cutter ...

Page 14: ...e personnel must be familiar with correct operation methods and safety precautions Before the installation pay attention to the following items l The customer s technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods l The number of onsite personnel depends on the engineering schedule and installation environment Generally only three to five...

Page 15: ...r panel 3 3 RRU Indicators This section describes six indicators on an RRU They indicate the running status 3 4 Installation Options This section describes RRU installation options An RRU can be installed on a pole U steel angle steel or wall 3 5 Installation Clearance Requirements of an RRU This section describes the requirements for the installation clearance of a single RRU and multiple RRUs an...

Page 16: ...g Figure 3 1 RRU exterior Figure 3 2 shows RRU dimensions Figure 3 2 RRU dimensions 3 2 RRU Ports This section describes RRU ports positioned on the RRU panels An RRU has a bottom panel cabling cavity panel and indicator panel RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 8 ...

Page 17: ...s Item Label Description 1 Ports at the bottom ANT0 ANT3 TX RX port ANT0 port supports RET signal transmission RET EXT_ALM Communication port for the RET antenna or port for alarm reporting supporting RET signal transmission RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 9 ...

Page 18: ...ing status For detailed positions of RRU indicators see 3 2 RRU Ports Table 3 2 describes RRU indicators Table 3 2 RRU indicators Label Color Status Description RUN Green On There is power supply but the module is faulty Off There is no power supply or the module is faulty Blinking on for 1s and off for 1s The module is working properly Blinking on for 0 125s and off for 0 125s Software is being l...

Page 19: ...out of lock because of mutual lock of dual mode clock sources or mismatched data rates over CPRI ports you are advised to check the system configuration to identify the fault Off The SFP module is not properly installed or the optical module is powered off CPRI1 IR1 Red and green Steady green The CPRI link is available Steady red An optical module fails to transmit or receive signals because the o...

Page 20: ...ecommended diameter is 80 mm 3 15 in l If the diameter of a pole ranges from 60 mm 2 36 in to 76 mm 2 99 in a maximum of two RRUs can be installed on the pole and the side mounted installation is not recommended l If three or more RRUs must be installed on a pole in centralized mode the diameter of the pole must range from 76 mm 2 99 in mm to 114 mm 4 49 in Figure 3 5 shows an RRU installed on a p...

Page 21: ...s CAUTION l It is recommended that only one RRU be installed on U steel l The vertical deviation angle of U steel must be less than or equal to 10 degrees as shown in Figure 3 7 RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 13 ...

Page 22: ...igure 3 8 shows an RRU installed on U steel Figure 3 8 RRU installed on U steel Installing an RRU on Angle Steel Figure 3 9 shows angle steel specifications RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 14 ...

Page 23: ...Installing an RRU on a Wall The wall on which RRUs are installed must meet the following requirements l When a single RRU is installed the wall has a capacity of bearing at least four times the weight of the RRU l Expansion bolts must be tightened to 30 N m 265 52 lbf in to ensure the bolts work properly and the wall remains intact without cracks in it RRU3232 Installation Guide 3 Information Abou...

Page 24: ...RU installed on a wall 3 5 Installation Clearance Requirements of an RRU This section describes the requirements for the installation clearance of a single RRU and multiple RRUs and the requirements for the installation spacing between RRUs RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 16...

Page 25: ...leave the minimum installation clearance 3 5 1 Installation Clearance for a Single RRU This section describes the recommended and minimum installation clearance for a single RRU Recommended Installation Clearance for a Single RRU Figure 3 13 shows the recommended installation clearance for a single RRU Figure 3 13 Recommended installation clearance for a single RRU Minimum Installation Clearance f...

Page 26: ...installed on a tower Figure 3 15 Minimum installation clearance for a single RRU installed on a tower 3 5 2 Installation Clearance for Multiple RRUs This section describes the recommended and minimum installation clearance for multiple RRUs RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 18...

Page 27: ...d installation clearance for multiple RRUs installed in centralized mode Minimum Installation Clearance for Multiple RRUs Installed in Centralized Mode Figure 3 17 shows the minimum installation clearance for multiple RRUs installed in centralized mode RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologi...

Page 28: ...ndard Mode Figure 3 18 shows the recommended clearance for multiple RRUs installed on a wall in standard mode Figure 3 18 Recommended clearance for multiple RRUs installed on a wall in standard mode RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 20 ...

Page 29: ...nstalled on a wall in standard mode Recommended Clearance for Multiple RRUs Side Mounted on a Wall Figure 3 20 shows the recommended clearance for multiple RRUs side mounted on a wall Figure 3 20 Recommended clearance for multiple RRUs side mounted on a wall RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Tech...

Page 30: ...nded horizontal spacing between RRUs Minimum Horizontal Spacing Between RRUs Figure 3 22 shows the minimum horizontal spacing between RRUs Figure 3 22 Minimum horizontal spacing between RRUs Recommended Vertical Spacing Between RRUs Figure 3 23 shows the recommended vertical spacing between RRUs RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary ...

Page 31: ...inimum Vertical Spacing Between RRUs Figure 3 24 shows the minimum vertical spacing between RRUs RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 23 ...

Page 32: ...re 3 24 Minimum vertical spacing between RRUs RRU3232 Installation Guide 3 Information About the Installation Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 24 ...

Page 33: ...se according to the packing list If Then The total number tallies with the packing list Go to Step 2 The total number does not tally with the packing list Find out the cause and report any missing articles to the local Huawei office Step 2 Check the exterior of the packing case If Then The outer packing is intact Go to Step 3 The outer packing is severely damaged or soaked Find out the cause and r...

Page 34: ...the Article Replacement Report WARNING To protect the equipment and prevent damage to the equipment you are advised to keep the unpacked equipment and packing materials indoors take photos of the stocking environment packing case or carton packing materials and any rusted or eroded equipment and then file the photos End RRU3232 Installation Guide 4 Unpacking the Equipment Issue 05 2011 10 20 Huawe...

Page 35: ...king the RRU hardware installation and powering on the RRU Figure 5 1 shows the process of installing an RRU Figure 5 1 Process of installing an RRU RRU3232 Installation Guide 5 Installation Process Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 27 ...

Page 36: ...for installing the RRU on U steel and the precautions that must be taken during the installation The RRU installed on U steel can be mounted to a tower or placed on the ground It is recommended that only one RRU be installed on U steel 6 4 Installing the RRU on Angle Steel This section describes the procedure for installing the RRU on angle steel and the precautions that must be taken during the i...

Page 37: ... installed on a pole U steel or angle steel This section describes the procedure for hoisting the RRU and mounting kits onto the tower and the precautions that must be taken RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 29 ...

Page 38: ...racket assembly for an RRU Figure 6 2 Bracket assembly for an RRU 1 Auxiliary mounting bracket 2 Dual nut bolt assembly 3 Main mounting bracket 4 Hoist clamp on the main mounting bracket 6 2 Installing the RRU on a Pole One or more RRUs can be installed on a pole RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co...

Page 39: ...6 4 shows two RRUs installed on a pole Figure 6 4 Two RRUs installed on a pole Figure 6 5 Figure 6 6 and Figure 6 7 show more than two RRUs installed on a pole RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 31 ...

Page 40: ...on a pole in centralized mode Figure 6 6 Four RRUs installed on a pole in centralized mode RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 32 ...

Page 41: ... see 6 6 Hoisting the RRU and Mounting Kits onto a Tower The hoist clamp on the main mounting bracket is secured properly Procedure Step 1 Determine a position for installing the main mounting bracket l If the RRU must be installed on a tower see 3 5 1 Installation Clearance for a Single RRU to determine a position l If the RRU must be installed on the ground see Figure 6 8 to determine a position...

Page 42: ...ly NOTE Verify that the arrow on the main mounting bracket is pointing up Step 4 Using a torque wrench tighten the nuts to 40 N m 354 03 lbf in to secure the bracket assembly onto the pole as shown in Figure 6 10 CAUTION Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary brackets are secured properly measure the spacing between the brackets on both sides and ensure...

Page 43: ...re 6 11 Installing the RRU on the main mounting bracket End 6 2 2 Installing Two RRUs This section describes the procedure for installing two RRUs on a pole and the precautions that must be taken during the installation RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 35 ...

Page 44: ...ket to secure the second RRU as shown in Figure 6 13 Figure 6 13 Installing the second main mounting bracket Step 3 Interchange the cover plate and plastic screws in the front and the attachment plate and stainless steel screws at the rear of the second RRU as shown in Figure 6 14 RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huaw...

Page 45: ...en the screws to 0 25 N m 2 21 lbf in using a torque screwdriver 4 Install the cover plate onto the RRU rear 5 Install the attachment plate onto the RRU front and tighten the stainless steel screws on the attachment plate to 5 N m 44 25 lbf in using a torque screwdriver Step 4 Install the second RRU on the main mounting bracket as shown in Figure 6 15 Figure 6 15 Installing the second RRU on the m...

Page 46: ...rchanging the attachment plate at the RRU rear and the cover plate on the RRU side 1 Remove the attachment plate from the RRU rear using an inner hexagon screwdriver 2 Remove the cover plate from the RRU side and use a Phillips screwdriver to remove the plastic screws from the RRU 3 Install the plastic screws onto the RRU rear and tighten the screws to 0 25 N m 2 21 lbf in using a torque screwdriv...

Page 47: ...st main mounting bracket as shown in Figure 6 18 Figure 6 18 Installing the second main mounting bracket Step 5 Install the second RRU on the second main mounting bracket as shown in Figure 6 19 RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 39 ...

Page 48: ...rd RRU on the main mounting bracket as shown in Figure 6 20 Figure 6 20 Installing the third RRU on the third main mounting bracket Step 7 Install the fourth main mounting bracket as shown in Figure 6 21 RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 40 ...

Page 49: ... steel and the precautions that must be taken during the installation The RRU installed on U steel can be mounted to a tower or placed on the ground It is recommended that only one RRU be installed on U steel Prerequisite Before you install an RRU on a tower the RRU and mounting kits are hoisted onto the tower For details see 6 6 Hoisting the RRU and Mounting Kits onto a Tower RRU3232 Installation...

Page 50: ...main mounting bracket l If the RRU must be installed on a tower see 3 5 1 Installation Clearance for a Single RRU to determine a position l If the RRU must be installed on the ground see Figure 6 24 to determine a position Figure 6 24 Distance between the main mounting bracket and the ground RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Cop...

Page 51: ...ng the bracket assembly NOTE Verify that the arrow on the main mounting bracket is pointing up Step 4 Using a torque wrench tighten the nuts to 40 N m 354 03 lbf in to secure the bracket assembly onto the U steel as shown in Figure 6 26 CAUTION Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary brackets are secured properly measure the spacing between the brackets ...

Page 52: ...main mounting bracket End 6 4 Installing the RRU on Angle Steel This section describes the procedure for installing the RRU on angle steel and the precautions that must be taken during the installation The RRU installed on angle steel can be mounted to RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 44 ...

Page 53: ...f the RRU installed on angle steel Figure 6 28 Top view of the RRU 1 Angle steel Procedure Step 1 Determine a position for installing the main mounting bracket l If the RRU must be installed on a tower see 3 5 1 Installation Clearance for a Single RRU to determine a position l If the RRU must be installed on the ground see Figure 6 29 to determine a position Figure 6 29 Distance between the main m...

Page 54: ... the bracket assembly NOTE Verify that the arrow on the main mounting bracket is pointing up Step 4 Using a torque wrench tighten the nuts to 40 N m 354 03 lbf in to secure both the bracket assembly onto the angle steel as shown in Figure 6 31 CAUTION Tighten the two dual nut bolt assemblies alternatively After the main and auxiliary brackets are secured properly measure the spacing between the br...

Page 55: ... 6 32 Installing the RRU on the main mounting bracket End 6 5 Installing the RRU on a Wall This section describes the procedure for installing the RRU on a wall and the precautions that must be taken during the installation RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 47 ...

Page 56: ...act without cracks in it Procedure Step 1 Place the auxiliary mounting bracket against the installation position use a level to verify that the auxiliary mounting bracket is placed horizontally and then mark anchor points with a marker as shown in Figure 6 33 Figure 6 33 Marking anchor points 1 Auxiliary mounting bracket 2 RRU NOTE It is recommended that the auxiliary mounting bracket be 1 200 mm ...

Page 57: ...rting an expansion bolt assembly 1 Use a hammer drill with a φ14 bit to drill holes vertically at the marked anchor points Ensure that the depth of each hole ranges from 55 mm 2 17 in to 60 mm 2 36 in WARNING Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Propri...

Page 58: ... 0 79 in to 30 mm 1 18 in of the expansion bolt outside the wall Step 3 Fit the auxiliary mounting bracket on the expansion bolt and then use a torque wrench 17 mm 0 67 in to tighten the expansion bolt to 30 N m 265 52 lbf in as shown in Figure 6 36 Figure 6 36 Fitting the auxiliary mounting bracket on expansion bolts CAUTION Verify that the arrow on the auxiliary mounting bracket is pointing up S...

Page 59: ... the RRU on the main mounting bracket until the RRU snaps shut as shown in Figure 6 38 Figure 6 38 Installing the RRU End RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 51 ...

Page 60: ...ION When installed on a tower only one RRU can be installed in standard mode or reverse mode and two RRUs can be installed on a pole in back to back mode RRUs cannot be installed on the side and the brackets for more than two RRUs cannot be combined Procedure Step 1 Bind the RRU and mounting kits properly using a lifting sling as shown in Figure 6 39 Figure 6 39 Binding mounting kits for the RRU S...

Page 61: ... the tower protect them from colliding with the ground and tower l Hoist the RRU onto the tower before it is installed on a pole angle steel or U steel CAUTION Do not hoist the RRU by the handle only as shown in Figure 6 41 RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 53 ...

Page 62: ...e tower as shown in Figure 6 42 Figure 6 42 Hoisting the RRU and mounting kits onto the tower 1 Lifting sling 2 Fixed pulley 3 Traction sling RRU3232 Installation Guide 6 Installing the RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 54 ...

Page 63: ...on engineer B pulls the lifting sling downwards and installation engineer C pulls the traction sling outwards to protect the RRU and mounting kits from colliding with the tower 4 Installation engineer A catches the RRU and mounting kits and then unties the sling NOTE The procedure for hoisting the RRU and mounting kits onto the tower is for your reference only End RRU3232 Installation Guide 6 Inst...

Page 64: ...ble This section describes the procedure for installing an RRU alarm cable 7 8 Installing an RRU AISG Multi Wire Cable and AISG Extension Cable This section describes the procedures for installing an RRU AISG multi wire cable and AISG extension cable 7 9 Opening the Cover Plate of an RRU Cabling Cavity This section describes the procedure for opening the cover plate of an RRU cabling cavity 7 10 I...

Page 65: ...ng Cavity This section describes the procedure for closing the cover plate of an RRU cabling cavity RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 57 ...

Page 66: ...cable The cables must be bound as follows l Different types of cables must be separately routed and cannot be entangled l The cables must be bound tightly and neatly The sheaths of the cables must not be damaged l 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 l Labels or nameplates must be attache...

Page 67: ...les must not cross power cables PGND cables or RF cables when routed If transmission cables are routed with power cables PGND cables or RF cables in parallel the spacing between them must be greater than 30 mm 1 18 in l E1 cables are routed straightly and bound neatly with cable ties l Sufficient slack is provided in E1 cables at turns Cabling requirements for fiber optic cables are as follows l D...

Page 68: ...m cable 4 CPRI fiber optic cable 5 RRU power cable Figure 7 2 shows the cable connections for a single RRU when the RET function is performed RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 60 ...

Page 69: ...ISG extension cable 5 CPRI fiber optic cable 6 RRU power cable Figure 7 3 shows the cable connections for multiple RRUs when the alarm monitoring function is performed RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 61 ...

Page 70: ...le NOTE If you must cascade two or more RRUs in the same cell for example when expanding capacity install the alarm cable to the last RRU Figure 7 4 shows the cable connections for multiple RRUs when the RET function is performed RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 62 ...

Page 71: ...c cable SFP high speed cable for cascaded RRUs 6 RRU power cable 7 3 Installation Process This section describes the process of installing RRU cables Figure 7 5 shows the process of installing RRU cables RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 63 ...

Page 72: ...RRU PGND Cable OT terminal M6 16 mm2 0 025 in 2 Ground terminal on the RRU OT terminal M8 16 mm2 0 025 in 2 Ground terminal on the ground bar RRU Power Cable Easy power receptacle pressfit type connector NEG and RTN ports on the RRU Easy power receptacle pressfit type connector RRU0 to RRU5 on the EPS RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Con...

Page 73: ...rt on the RRU Cord end terminal External alarm device RRU AISG Multi Wire Cable Waterproofed DB9 male connector RET EXT_ALM port on the RRU Standard AISG female connector Standard AISG male connector on the RCU or on the AISG extension cable RRU AISG Extension Cable Standard AISG male connector Standard AISG female connector on the AISG multi wire cable Standard AISG female connector Standard AISG...

Page 74: ... OT terminal at one end of the PGND cable to the ground terminal at the RRU bottom and the M8 OT terminal at the other end to the external ground bar as shown in Figure 7 6 Figure 7 6 Installing an RRU PGND cable NOTE Crimp OT terminals in correct positions as shown in Figure 7 7 Figure 7 7 Correct position of an OT terminal RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Hu...

Page 75: ...lling an RRU RF jumper CAUTION On AC powered electric railways such as high speed railways when leaky cables are connected to RRUs installed in tunnels high voltage resistance DC blocks must be installed between RRU RF jumpers and the leaky cables to protect the RRUs against damage Step 2 Link the other end of the RF jumper to the external antenna system Step 3 Waterproof the connectors of the RF ...

Page 76: ...lly from bottom up Do not cut the tape until all the three layers of the tape are already wrapped Wrap each layer of tape around the connector tightly 3 Wrap each connector with three layers of PVC insulation tape from bottom up then from top down and finally from bottom up Do not cut the tape until all the three layers of the tape are already wrapped Wrap each layer of tape around the connector t...

Page 77: ...e layers of PVC insulation tape from bottom up then from top down and finally from bottom up Do not cut the tape until all the three layers of the tape are already wrapped Wrap each layer of tape around the connector tightly Step 5 Lay out the jumper by referring to 7 1 Cabling Requirements and then bind the jumper using cable ties Step 6 Label the installed jumper by referring to Attaching a Sign...

Page 78: ...n the distance between an RRU and a Remote Control Unit RCU is longer than 5 m 16 4 ft an AISG multi wire cable is not long enough to connect the RRU and the RCU In this case an AISG extension cable is used to extend the AISG multi wire cable Procedure l Install an AISG multi wire cable that is not configured with an AISG extension cable 1 Link the waterproofed DB9 connector at one end the AISG mu...

Page 79: ...bel l Install an AISG multi wire cable that is configured with an AISG extension cable 1 Link the waterproofed DB9 connector at one end of the AISG multi wire cable to the RET port on the RRU bottom and link the other end to the standard AISG male connector of the AISG extension cable as shown in Figure 7 13 Figure 7 13 Installing an RRU AISG multi wire cable RRU3232 Installation Guide 7 Installin...

Page 80: ...This section describes the procedure for opening the cover plate of an RRU cabling cavity Procedure Step 1 Wear ESD gloves CAUTION Take proper ESD protection measures for example wear ESD gloves to prevent electrostatic damage to the boards modules or electronic components Step 2 Loosen the protection screw on the cover plate of the RRU cabling cavity using an M4 Phillips screwdriver and then lowe...

Page 81: ...s 3 Cable trough for the fiber optic cable 4 Cable trough for the power cable 5 Waterproof block 6 Clip 7 Cabling cavity Step 3 Loosen the screws on the clip and open the clip as shown Figure 7 17 NOTE Open the clip only for the associated cable RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 73 ...

Page 82: ...etails see the DBS3900 Installation Guide Context There are two types of RRU power cables in terms of cross sectional areas 3 3 mm2 0 005 in 2 12 AWG complying with North American standards and 4 mm2 0 006 in 2 complying with European standards Procedure l Install an RRU power cable that feeds power to an RRU from a DCDU 03B when the DCDU 03B is configured 1 Link the easy power receptacle pressfit...

Page 83: ...e by referring to 7 1 Cabling Requirements and then bind the cable using cable ties 4 Label the installed cable by referring to Attaching a Cable Tying Label l Install an RRU power cable that feeds power to an RRU from the embedded power system EPS when the EPS is configured 1 Link the easy power receptacle pressfit type connector at one end of the RRU power cable to the power supply socket on the...

Page 84: ...er of the following ways l SM and MM labels on an optical module SM indicates a single mode optical module and MM indicates a multi mode optical module l Color of the puller on an optical module Blue indicates a single mode optical module and black or gray indicates a multi mode optical module CAUTION The optical modules to be installed must match CPRI rates Context A CPRI fiber optic cable transm...

Page 85: ...nd labeled 1A and 1B of the fiber optic cable to the optical module on the RRU side as shown in Figure 7 20 Figure 7 20 Installing a CPRI fiber optic cable CAUTION Install the fiber optic cable in the cable clip near the power cable to leave some slack at the bend Tighten the screws on the cable clip to 1 4 N m 12 39 lbf in RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Hua...

Page 86: ...cribes the procedure for installing an SFP high speed cable for cascading RRUs Context An SFP high speed cable for cascading RRUs connects to CPRI ports between two RRUs within a distance of 2 m 6 56 ft and transmits CPRI signals between the RRUs Procedure Step 1 Connect one end of the SFP high speed cable to the CPRI1 port on the cabling cavity of the upper level RRU Figure 7 21 Installing an SFP...

Page 87: ...s Step 4 Label the installed cable by referring to Attaching an L Shaped Label End 7 13 Closing the Cover Plate of an RRU Cabling Cavity This section describes the procedure for closing the cover plate of an RRU cabling cavity Procedure Step 1 Close clips and tighten the screws on each clip to 1 4 N m 12 39 lbf in using a torque screwdriver as shown in Figure 7 22 Figure 7 22 Closing clips RRU3232...

Page 88: ...lacement of waterproof blocks Step 3 Close the cover plate of the RRU cabling cavity and tighten the screws on the cover plate to 0 8 N m 7 08 lbf in using a torque screwdriver as shown in Figure 7 24 Figure 7 24 Closing the cover plate of the RRU cabling cavity 1 Protection screw RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright H...

Page 89: ...rly inserted into troughs l Tighten the screws on the cover plate in the sequence shown in the figure Step 4 Take off the ESD gloves and pack up all the tools End RRU3232 Installation Guide 7 Installing RRU Cables Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 81 ...

Page 90: ...aps and the caps are waterproofed 5 There are no connectors or joints on each power cable or PGND cable 6 The terminals at two ends of each power cable or PGND cable are securely soldered or crimped 7 None of power cables and PGND cables can be short circuited or reversely connected In addition these cables are not damaged or broken 8 Power cables and PGND cables are separately bound from other ca...

Page 91: ...n it within 24 hours If you power off the RRU for maintenance you must restore power to the RRU within 24 hours Figure 9 1 shows the RRU power on check process Figure 9 1 RRU power on check process RRU3232 Installation Guide 9 Powering On an RRU Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 83 ...

Page 92: ...ower Receptacle Pressfit Type Connector to the RRU Power Cable on the RRU Side This section describes the procedure for adding an easy power receptacle pressfit type connector to the RRU power cable on the RRU side RRU3232 Installation Guide 10 Appendix Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 84 ...

Page 93: ...le diagram on labels Figure 10 1 Cable diagram on labels 1 Cable diagram on labels Step 2 Determine the length of the power cable for different operations based on the labels as shown in Figure 10 2 Figure 10 2 Determining the length of the power cable Step 3 Strip the specified length of the sheath off the power cable as shown in Figure 10 3 RRU3232 Installation Guide 10 Appendix Issue 05 2011 10...

Page 94: ...s shown in Figure 10 4 Figure 10 4 Stripping the sheath off each core wire Figure 10 5 Matched length Step 5 Add an easy power receptacle pressfit type connector to two core wires 1 Use a flat head screwdriver to push sliding blocks as shown in Figure 10 6 Figure 10 6 Pushing sliding blocks RRU3232 Installation Guide 10 Appendix Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Hua...

Page 95: ...hown in Figure 10 7 Figure 10 7 Adding an easy power receptacle pressfit type connector to two core wires Step 6 Strip the specified length of the sheath off the power cable to expose the intact shield layer as shown in Figure 10 8 Figure 10 8 Stripping the sheath off the power cable End RRU3232 Installation Guide 10 Appendix Issue 05 2011 10 20 Huawei Proprietary and Confidential Copyright Huawei...

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