Huawei Technologies RRU3642 Multi-mode Multi-carriers Remote Radio Unit User Manual

Huawei Technologies Co.,Ltd Multi-mode Multi-carriers Remote Radio Unit

Installation Guide

RRU3642 V400 Installation Guide Issue 01 Date 2011-12-27 HUAWEI TECHNOLOGIES CO., LTD.
Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. i Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent 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 respective holders. Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not 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 ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Website: http://www.huawei.com Email: support@huawei.com
RRU3642 Installation Guide About This Document Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.ii About This Document Overview This document describes the procedure for installing a direct current (DC) RRU3642 (referred to as RRU in this document). RRU is short for remote radio unit. Product Version The following table lists the product version related to this document. Product Name Product Version DBS3900 V400 Intended Audience This document is intended for: z Base station installation engineers Organization 1 Changes in the RRU3642 Installation Guide This chapter describes changes in the RRU3642 Installation Guide. 2 Installation Preparations Before the installation, you must obtain all reference documents and required tools and instruments, and have been trained on installation skills. 3 Information About the Installation Before installing an RRU, you must be familiar with its exterior, ports, installation options, physical supports, and installation clearance requirements. 4 Unpacking the Equipment Unpack and check the delivered equipment to ensure that all the materials are included and intact.
RRU3642 Installation Guide About This Document Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.iii 5 Installation Process The installation process involves installing an RRU and RRU cables, checking the RRU hardware installation, and powering on the RRU. 6 Installing the RRU This chapter describes the procedure for installing the RRU. The RRU can be installed on a pole, U-steel, angle steel, or wall. The procedure for installing the RRU varies depending on installation options. 7 Installing RRU Cables This section describes the procedures for installing remote radio unit (RRU) cables. 8 Checking the RRU Hardware Installation After an RRU is installed, check the hardware installation. 9 Powering On an RRU After all the devices are installed, check the power-on status of an RRU. 10 Appendix This section describes the procedure for adding an easy power receptacle (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 that, 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 hazardous situation that, if not avoided, could cause equipment damage, data loss, and performance degradation, or unexpected results. Indicates a tip that may help you solve a problem or save time. Provides additional information to emphasize or supplement important points of the main text.
RRU3642 Installation Guide About This Document Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.iv General Conventions Convention Description Times New Roman Normal paragraphs are in Times New Roman. Boldface Names of files, directories, folders, and users are in boldface. For example, log in as user root. Italic Book titles are in italics. Courier New Terminal display is in Courier New. Command Conventions Convention Description Boldface The keywords of a command line are in boldface. Italic Command arguments are in italics. [ ] Items (keywords or arguments) in square brackets [ ] are optional. { x | y | ... } Alternative items are grouped in braces and separated by vertical bars. One is selected. [ x | y | ... ] Optional alternative items are grouped in square brackets and separated by vertical bars. One or none is selected. { x | y | ... } * Alternative items are grouped in braces and separated by vertical bars. A minimum of one or a maximum of all can be selected. GUI Conventions Convention Description Boldface Buttons, menus, parameters, tabs, windows, and dialog titles are in boldface. For example, click OK. > Multi-level menus are in boldface and separated by the ">" signs. For example, choose File > Create > Folder. Keyboard Operation Format Description Key Press the key. For example, press Enter and press Tab.
RRU3642 Installation Guide About This Document Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.v Format Description Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt+A means the three keys should be pressed concurrently. Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means the two keys should be pressed in turn. Mouse Operation 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.
RRU3642 Installation Guide Contents Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.vi Contents About This Document .................................................................................................................... ii1 Changes in the RRU3642 Installation Guide ........................................................................... 12 Installation Preparations ............................................................................................................. 22.1 Reference Documents ...................................................................................................................................... 22.2 Tools and Instruments ...................................................................................................................................... 22.3 Skills and Requirements for Onsite Personnel ................................................................................................. 33 Information About the Installation ........................................................................................... 53.1 RRU Exterior ................................................................................................................................................... 53.2 RRU Ports ........................................................................................................................................................ 63.3 RRU Indicators ................................................................................................................................................. 93.4 Installation Options ........................................................................................................................................ 103.5 Installation Clearance Requirements of an RRU ............................................................................................ 153.5.1 Installation Clearance for a Single RRU ............................................................................................... 153.5.2 Installation Clearance for Multiple RRUs ............................................................................................. 173.5.3 Installation Spacing Between RRUs ..................................................................................................... 214 Unpacking the Equipment ........................................................................................................ 245 Installation Process ..................................................................................................................... 266 Installing the RRU ...................................................................................................................... 276.1 Mounting Kits for an RRU ............................................................................................................................. 286.2 Installing the RRU on a Pole .......................................................................................................................... 296.2.1 Installing a Single RRU ........................................................................................................................ 316.2.2 Installing Two RRUs ............................................................................................................................. 336.2.3 Installing Multiple RRUs ...................................................................................................................... 366.3 Installing the RRU on U-steel ........................................................................................................................ 396.4 Installing the RRU on Angle Steel ................................................................................................................. 436.5 Installing the RRU on a Wall .......................................................................................................................... 466.6 Hoisting an RRU onto a Tower ...................................................................................................................... 507 Installing RRU Cables ................................................................................................................ 547.1 Cabling Requirements .................................................................................................................................... 557.2 Cable Connections ......................................................................................................................................... 60
RRU3642 Installation Guide Contents Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.vii 7.3 Installation Process ......................................................................................................................................... 637.4 RRU Cable List .............................................................................................................................................. 647.5 Installing the RRU PGND Cable .................................................................................................................... 667.6 Installing an RRU RF Jumper ........................................................................................................................ 687.7 Installing an Inter-RRU RF Cable .................................................................................................................. 707.8 Installing an RRU AISG Multi-Wire Cable and AISG Extension Cable ........................................................ 717.9 Opening the Cover Plate of an RRU Cabling Cavity ..................................................................................... 737.10 Installing an RRU power cable .................................................................................................................... 757.11 Installing a CPRI Fiber Optic Cable ............................................................................................................. 777.12 Installing an RRU Alarm Cable .................................................................................................................... 797.13 Closing the Cover Plate of an RRU Cabling Cavity .................................................................................... 808 Checking the RRU Hardware Installation ............................................................................. 829 Powering On an RRU ................................................................................................................. 8310 Appendix .................................................................................................................................... 8510.1 Adding an Tool-less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side ........... 85
RRU3642 Installation Guide 1 Changes in the RRU3642 Installation Guide Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.1 1 Changes in the RRU3642 Installation Guide This chapter describes changes in the RRU3642 Installation Guide. Draft A (2011-12-30) This is the draft.
RRU3642 Installation Guide 2 Installation Preparations Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.2 2 Installation Preparations About This Chapter Before the installation, you must obtain all reference documents and required tools and instruments, and have been trained on installation skills. 2.1 Reference Documents Before the installation, you must familiarize yourself with the information in the following 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. 2.1 Reference Documents Before the installation, you must familiarize yourself with the information in the following documents: z RRU3642 Hardware Description z RRU Hardware Maintenance Guide z DBS3900 Installation Guide z OCB User 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
RRU3642 Installation Guide 2 Installation Preparations Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.3 Heat gun Phillips screwdriver (M3 to M6) Flat-head screwdriver (M3 to M6) Rubber mallet COAX crimping tool Wire stripper Utility knife Cable cutter Adjustable wrench (capacity ≥ 32 mm [1.26 in.]) Level Torque screwdriver 5 mm (M3 to M6) (M3 to M6) Torque wrench Capacity: 17 mm [0.67 in.], 21 mm [0.82 in.], and 32 mm [1.26 in.] Combination wrench Capacity: 17 mm [0.67 in.], 21 mm [0.82 in.], and 32 mm [1.26 in.] Multimeter Marker (diameter ≤ 10 mm [0.39 in.]) Measuring tape 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. Before the installation, pay attention to the following items:
RRU3642 Installation Guide 2 Installation Preparations Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.4 z The customer's technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods. z The number of onsite personnel depends on the engineering schedule and installation environment. Generally, only three to five onsite personnel are necessary.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.5 3 Information About the Installation About This Chapter Before installing an RRU, you must be familiar with its exterior, ports, installation options, physical supports, and installation clearance requirements. 3.1 RRU Exterior This section describes the exterior and dimensions of an RRU. 3.2 RRU Ports This section describes the ports on the remote radio unit (RRU) panels. An RRU has a bottom panel, cabling cavity panel, and indicator 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 and the requirements for the installation spacing between RRUs. 3.1 RRU Exterior This section describes the exterior and dimensions of an RRU. Figure 3-1 shows an RRU.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.6 Figure 3-1 RRU exterior Figure 3-2 shows RRU dimensions. Figure 3-2 RRU dimensions 3.2 RRU Ports This section describes the ports on the remote radio unit (RRU) panels. An RRU has a bottom panel, cabling cavity panel, and indicator panel. Figure 3-3 shows RRU ports on the panels.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.7 Figure 3-3 RRU ports on the panels Table 3-1 describes RRU ports and indicators on the panels. Table 3-1 RRU ports and indicators on the panels Item Label Description (1) Ports at the bottom ANT_TX/RXA TX/RX port A, transmitting remote electrical tilt (RET) signals ANT_RXC RX port C ANT_RXD Port RX port D
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.8 Item Label Description ANT_TX/RXB TX/RX port B RX_IN/OUT Port for connecting to the inter-RRU radio frequency (RF) cable RET RET antenna port, transmitting RET signals (2) Ports in the cabling cavity RTN (+) Power supply port NEG (-) CPRI0 Optical/electrical port 0 CPRI1 Optical/electrical port 1 EXT_ALM Port for alarm reporting (3) Indicators RUN See RRU Indicators. ALM ACT VSWR CPRI0/IR0 CPRI1/IR1 The port for transmitting RET signals is configured using software. Table 3-2 lists the combination of RF ports. Table 3-2 Combination of RF ports TX/RX Channel Number of RF Ports Combination of RF ports One 1T2R channel 2 Combination of ANT_TX/RXA and ANT_TX/RXA ports 2 Combination of ANT_TX/RXB and ANT_RXD ports 2 Combination of ANT_TX/RXA and ANT_RXB ports Two 1T2R channels 4 Combination of ANT_TX/RXA and ANT_RXC ports and combination of ANT_TX/RXB and ANT_RXD ports
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.9 TX/RX Channel Number of RF Ports Combination of RF ports 2T2R channel 2 Combination of ANT_TX/RXA and ANT_TX/RXB ports 3.3 RRU Indicators This section describes six indicators on an RRU. They indicate the running status. For detailed positions of RRU indicators, see RRU Ports. Table 3-3 describes RRU indicators. Table 3-3 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 loaded to the module, or the module is not started. ALM Red On Alarms are generated, and the module must be replaced. Blinking (on for 1s and off for 1s)Alarms are generated. The alarms may be caused by the faults on the related boards or ports. Therefore, the necessity for module replacement is uncertain. Off No alarm is generated. ACT Green On The module is working properly with TX channels enabled. Blinking (on for 1s and off for 1s)The module is working properly with TX channels disabled. VSWR Red Off No VSWR alarm is generated. Blinking (on for 1s and off for 1s)VSWR alarms are generated on the ANT_TX/RXB port. On VSWR alarms are generated on the ANT_TX/RXA port.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.10 Label Color Status Description Blinking (on for 0.125s and off for 0.125s) VSWR alarms are generated on the ANT_TX/RXA and ANT_TX/RXB ports. CPRI0/IR0 Red and green Steady green The CPRI link is available. Steady red An optical module fails to transmit or receive signals because the optical module is faulty or the fiber optic cable is broken. Blinking red (on for 1s and off for 1s) The CPRI link is 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 optical module is faulty or the fiber optic cable is broken. Blinking red (on for 1s and off for 1s) The CPRI link is 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. 3.4 Installation Options This section describes RRU installation options. An RRU can be installed on a pole, U-steel, angle steel, or wall. Installing an RRU on a Pole Figure 3-4 shows the diameter of pole for installing an AAU3801.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.11 Figure 3-4 Diameter of a pole z The diameter of a pole for installing an RRU ranges from 60 mm (2.36 in.) to 114 mm (4.49 in.). The recommended diameter is 80 mm (3.15 in.). z 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. Figure 3-5 shows an RRU installed on a pole. Figure 3-5 RRU installed on a pole Installing an RRU on U-steel Figure 3-6 shows U-steel specifications.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.12 Figure 3-6 U-steel specifications z It is recommended that only one RRU be installed on U-steel. z The vertical deviation angle of U-steel must be less than or equal to 10 degrees, as shown in Figure 3-7. Figure 3-7 Requirements for the vertical deviation angle of U-steel or angle steel (1) RRU (2) U-steel or angle steel Figure 3-8 shows an RRU installed on U-steel.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.13 Figure 3-8 RRU installed on U-steel Installing an RRU on Angle Steel Figure 3-9 shows angle steel specifications. Figure 3-9 Angle steel specifications z It is recommended that only one RRU be installed on angle steel. z The vertical deviation angle of angle steel must be less than or equal to 10 degrees, as shown in Figure 3-7. Figure 3-10 shows an RRU installed on angle steel.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.14 Figure 3-10 RRU installed on angle steel Installing an RRU on a Wall The wall on which RRUs are installed must meet the following requirements: z When a single RRU is installed, the wall has a capacity of bearing at least four times the weight of the RRU. z 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. The brackets cannot be combined when RRUs are installed on a wall, as shown in Figure 3-11. Figure 3-11 Correct placement of brackets Figure 3-12 shows an RRU installed on a wall.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.15 Figure 3-12 RRU 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. The recommended installation clearance ensures normal running and provides an appropriate space for Operation and Maintenance (O&M). If there is sufficient space, leave the recommended installation clearance. The minimum installation clearance ensures normal running and heat dissipation, but OM activities such as checking indicator status and opening the maintenance cavity cannot be properly conducted. If the installation space is restricted, 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.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.16 Figure 3-13 Recommended installation clearance for a single RRU Minimum Installation Clearance for a Single RRU Figure 3-14 shows the minimum installation clearance for a single RRU. Figure 3-14 Minimum installation clearance for a single RRU Minimum Installation Clearance for a Single RRU Installed on a Tower Figure 3-15 shows the minimum installation clearance for a single RRU installed on a tower.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.17 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. Recommended Installation Clearance for Multiple RRUs Installed in Centralized Mode Figure 3-16 shows the recommended installation clearance for multiple RRUs installed in centralized mode.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.18 Figure 3-16 Recommended 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.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.19 Figure 3-17 Minimum installation clearance for multiple RRUs installed in centralized mode Recommended Clearance for Multiple RRUs Installed on a Wall in Standard 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
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.20 Minimum Clearance for Multiple RRUs Installed on a Wall in Standard Mode Figure 3-19 shows the minimum clearance for multiple RRUs installed on a wall in standard mode. Figure 3-19 Minimum clearance for multiple RRUs installed 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.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.21 Figure 3-20 Recommended clearance for multiple RRUs side-mounted on a wall 3.5.3 Installation Spacing Between RRUs This section describes the horizontal and vertical installation spacing between RRUs. Recommended Horizontal Spacing Between RRUs Figure 3-21 shows the recommended horizontal spacing between RRUs. Figure 3-21 Recommended horizontal spacing between RRUs Minimum Horizontal Spacing Between RRUs Figure 3-22 shows the minimum horizontal spacing between RRUs.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.22 Figure 3-22 Minimum horizontal spacing between RRUs Recommended Vertical Spacing Between RRUs Figure 3-23 shows the recommended vertical spacing between RRUs. Figure 3-23 Recommended vertical spacing between RRUs Minimum Vertical Spacing Between RRUs Figure 3-24 shows the minimum vertical spacing between RRUs.
RRU3642 Installation Guide 3 Information About the Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.23 Figure 3-24 Minimum vertical spacing between RRUs
RRU3642 Installation Guide 4 Unpacking the Equipment Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.24 4 Unpacking the Equipment Unpack and check the delivered equipment to ensure that all the materials are included and intact. Context When transporting, moving, or installing the equipment, components, or parts, you must: z Prevent them from colliding with doors, walls, shelves, or other objects. z Wear clean gloves, and avoid touching the equipment, components, or parts with bare hands, sweat-soaked gloves, or dirty gloves. z After a cabinet or an BBU is unpacked, it must be powered on within 7 days. z After an RRU is unpacked, it must be powered on within 24 hours. Procedure Step 1 Check the total number of articles in each case 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.
RRU3642 Installation Guide 4 Unpacking the Equipment Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.25 If ... Then ... The outer packing is intact Go to Step 3. The outer packing is severely damaged or soaked Find out the cause and report it to the local Huawei office. The vibrating indicator is red Stop unpacking the wooden crate, and then report it to the transportation company. Step 3 Check the type and quantity of the equipment in the cases according to the packing list. If ... Then ... Types and quantity of the article tally with those on the packing list Sign the Packing List with the customer. There is any shipment shortage or wrong shipment Fill in and submit the Cargo Shortage and Mishandling Report. Articles are damaged. Fill in and submit the Article Replacement Report. 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
RRU3642 Installation Guide 5 Installation Process Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.26 5 Installation Process The installation process involves installing an RRU and RRU cables, checking 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
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.27 6 Installing the RRU About This Chapter This chapter describes the procedure for installing the RRU. The RRU can be installed on a pole, U-steel, angle steel, or wall. The procedure for installing the RRU varies depending on installation options. z Do not stand the RRU upright because the load-bearing capacity of the RF ports at the RRU bottom is low. z Place a foam pad or cardboard under an RRU to protect the RRU housing from damage during the installation. 6.1 Mounting Kits for an RRU This section describes the bracket assembly and the attachment plate for an RRU. 6.2 Installing the RRU on a Pole One or more RRUs can be installed on a pole. 6.3 Installing the RRU on U-steel This section describes the procedure 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 installation. The RRU installed on angle steel can be mounted to a tower or placed on the ground. It is recommended that only one RRU be installed on angle steel. 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.28 6.6 Hoisting an RRU onto a Tower Before installing an RRU on a tower, bind the RRU and mounting kits and then hoist them onto the tower. The RRU can be 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. 6.1 Mounting Kits for an RRU This section describes the bracket assembly and the attachment plate for an RRU. Figure 6-1 shows the front and rear view of an RRU. Figure 6-1 Front and rear view of an RRU (1) Cover plate (2) Attachment plate Figure 6-2 shows the bracket assembly for an RRU. Figure 6-2 Bracket assembly for an RRU (1) Auxiliary (2) Dual-nut bolt (3) Main (4) Hoist clamp on the
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.29 mounting bracket assembly mounting bracket main mounting bracket 6.2 Installing the RRU on a Pole One or more RRUs can be installed on a pole. Figure 6-3 shows a single RRU installed on a pole. Figure 6-3 A single RRU installed on a pole Figure 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.30 Figure 6-5 Three RRUs installed on a pole in centralized mode Figure 6-6 Four RRUs installed on a pole in centralized mode
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.31 Figure 6-7 Six RRUs installed on a pole in centralized mode 6.2.1 Installing a Single RRU This section describes the procedure for installing a single RRU on a pole and the precautions that must be taken during the installation. 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 an RRU 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. z If the RRU must be installed on a tower, see 3.5.1 Installation Clearance for a Single RRU to determine a position. z If the RRU must be installed on the ground, see Figure 6-8 to determine a position.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.32 Figure 6-8 Distance between the main mounting bracket and the ground Step 2 Fit one end of the auxiliary mounting bracket to one dual-nut bolt assembly of the main mounting bracket. Step 3 Install the bracket assembly on the pole, and then fit the other end of the auxiliary mounting bracket to the other dual-nut bolt assembly, as shown in Figure 6-9. Figure 6-9 Installing the bracket assembly 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. 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 that the spacing is the same on the two sides.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.33 Figure 6-10 Securing the bracket assembly onto the pole Step 5 Install the RRU on the main mounting bracket until the RRU snaps shut, as shown in Figure 6-11. Figure 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.34 Procedure Step 1 Install the first RRU, as shown in Figure 6-12. For details, see 6.2.1 Installing a Single RRU. Figure 6-12 Installing the first RRU Step 2 Install the other main mounting bracket on the auxiliary mounting bracket 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.35 Figure 6-14 Interchanging the cover plate in the front and the attachment plate at the rear of the second RRU 1. Remove the attachment plate from the RRU rear using an inner hexagon screwdriver. 2. Remove the cover plate from the RRU front, 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 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 main mounting bracket ----End
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.36 6.2.3 Installing Multiple RRUs The section describes the procedure for installing multiple RRUs on a pole and the precautions that must be taken during the installation. Context A pole supports the installation of three, four, or six RRUs. The procedures for installing them are the same. Following is the procedure of installing four RRUs on a pole. Procedure Step 1 Install one set of bracket assembly on a pole. For details, see 6.2.1 Installing a Single RRU. Step 2 Interchange the attachment plate and stainless steel screws at the RRU rear and the cover plate and plastic screws on the RRU side, as shown in Figure 6-16. Figure 6-16 Interchanging 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 screwdriver. 4. Install the cover plate onto the RRU rear. 5. Install the attachment plate onto the RRU side, and tighten the stainless steel screws on the attachment plate to 5 N·m (44.25 lbf·in.) using a torque screwdriver. Step 3 Install the first RRU on the main mounting bracket, as shown in Figure 6-17.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.37 Figure 6-17 Installing the first RRU on the main mounting bracket Step 4 Install the second main mounting bracket on the side of the first 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.38 Figure 6-19 Installing the second RRU on the second main mounting bracket Step 6 Install the third main mounting bracket, and then install the third 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.39 Figure 6-21 Installing the fourth main mounting bracket Step 8 Install the fourth RRU on the fourth main mounting bracket, as shown in Figure 6-22. Figure 6-22 Installing the fourth RRU on the fourth main mounting bracket ----End 6.3 Installing the RRU on U-steel This section describes the procedure 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. 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 an RRU onto a Tower.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.40 The hoist clamp on the main mounting bracket is secured properly. Context Figure 6-23 shows the top view of the RRU installed on U-steel. Figure 6-23 Top view of the RRU (1) U-steel Procedure Step 1 Determine a position for installing the main mounting bracket. z If the RRU must be installed on a tower, see 3.5.1 Installation Clearance for a Single RRU to determine a position. z If the RRU must be installed on the ground, see Figure 6-24 to determine a position.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.41 Figure 6-24 Distance between the main mounting bracket and the ground It is recommended that the main mounting bracket be 1,200 mm (47.24 in.) to 1,600 mm (62.99 in.) above the ground. Step 2 Fit one end of the auxiliary mounting bracket to one dual-nut bolt assembly of the main mounting bracket. Step 3 Install the bracket assembly on U-steel, and then fit the other end of the auxiliary mounting bracket to the other dual-nut bolt assembly, as shown in Figure 6-25. Figure 6-25 Installing the bracket assembly 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.42 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 that the spacing is the same on the two sides. Figure 6-26 Securing the bracket assembly onto U-steel Step 5 Install the RRU on the main mounting bracket until the RRU snaps shut, as shown in Figure 6-27. Figure 6-27 Installing the RRU on the main mounting bracket ----End
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.43 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 a tower or placed on the ground. It is recommended that only one RRU be installed on angle 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 an RRU onto a Tower. The hoist clamp on the main mounting bracket is secured properly. Context Figure 6-28 shows the top view of 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. z If the RRU must be installed on a tower, see 3.5.1 Installation Clearance for a Single RRU to determine a position. z If the RRU must be installed on the ground, see Figure 6-29 to determine a position.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.44 Figure 6-29 Distance between the main mounting bracket and the ground It is recommended that the main mounting bracket be 1,200 mm (47.24 in.) to 1,600 mm (62.99 in.) above the ground. Step 2 Fit one end of the auxiliary mounting bracket to one dual-nut bolt assembly of the main mounting bracket. Step 3 Install the bracket assembly on angle steel, and then fit the other end of the auxiliary mounting bracket to the other dual-nut bolt assembly, as shown in Figure 6-30. Figure 6-30 Installing the bracket assembly 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.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.45 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 that the spacing is the same on the two sides. Figure 6-31 Securing the bracket assembly onto angle steel Step 5 Install the RRU on the main mounting bracket until the RRU snaps shut, as shown in Figure 6-32. Figure 6-32 Installing the RRU on the main mounting bracket ----End
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.46 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. Prerequisite The hoist clamp on the main mounting bracket is secured properly. Context The wall on which RRUs are installed must meet the following requirements: z When a single RRU is installed, the wall has a capacity of bearing at least four times the weight of the RRU. z 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. 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 It is recommended that the auxiliary mounting bracket be 1,200 mm (47.24 in.) to 1,600 mm (62.99 in.) above the ground.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.47 Figure 6-34 Expansion bolt assembly (1) M10x65 bolt (2) Spring washer 10 (3) Plastic tube (4) Flat washer 10 (5) Expansion tube Step 2 Drill holes at the anchor points, and then insert expansion bolt assemblies, as shown in Figure 6-35. Figure 6-35 Drilling a hole and inserting 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.). Take proper safety measures to protect your eyes and respiratory tract against the dust before drilling holes.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.48 2. Hit the expansion bolt with a rubber mallet until the expansion tube completely enters the hole. 3. Tighten an expansion bolt slightly and place it vertically into each hole. 4. Remove the M10x65 bolt, spring washer, plastic tube, and flat washer from each expansion bolt assembly in sequence. After completely removing an expansion bolt, store the plastic tube properly. 5. Hammer the bolt into the wall. Do not hammer the expansion bolt entirely into the wall. Instead, leave 20 mm (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 Verify that the arrow on the auxiliary mounting bracket is pointing up. Step 4 Loosen the screws on the main mounting bracket and store them properly.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.49 Step 5 Install the main mounting bracket, as shown in Figure 6-37. Figure 6-37 Installing the main mounting bracket Step 6 Install the RRU on the main mounting bracket until the RRU snaps shut, as shown in Figure 6-38. Figure 6-38 Installing the RRU
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.50 ----End 6.6 Hoisting an RRU onto a Tower Before installing an RRU on a tower, bind the RRU and mounting kits and then hoist them onto the tower. The RRU can be 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. Prerequisite Place a foam pad or cardboard on the ground to protect the housing of the RRU from damage before the binding. Do not stand the RRU upright because the load-bearing capacity of the RF ports at the RRU bottom is low. 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 Step 2 Lead one sling through the lifting eye and RRU handle and use the sling as a lifting sling, and lead the other sling through the RRU handle and use the sling as a traction sling, as shown in Figure 6-40.
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.51 Figure 6-40 Binding the RRU (1) Lifting sling (2) Lifting eye (3) Traction sling (4) Handle
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.52 z Each sling has a maximum load-bearing capacity of 200 kg (441 lb), the diameter of the sling must be less than 25 mm (0.98 in.), and the angle at the top of the traction sling [by the knot] must not be greater than 60 degrees. z When hoisting the RRU and mounting kits onto the tower, protect them from colliding with the ground and tower. z Hoist the RRU onto the tower before it is installed on a pole, angle steel, or U-steel. z Do not hoist the RRU by the handle or lifting eye only, as shown in Figure 6-41 and Figure 6-42. Figure 6-41 Incorrect binding method Figure 6-42 Incorrect binding method
RRU3642 Installation Guide 6 Installing the RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.53 Step 3 Hoist the RRU and mounting kits onto the tower respectively, as shown in Figure 6-43. Hoist mounting kits onto the tower and then install the mounting kits before hoisting the RRU onto the tower. When hoisting the mounting kits and RRU, protect them from colliding with the tower. Figure 6-43 Hoisting the RRU onto the tower (1) Traction sling (2) Lifting sling (3) Fixed pulley 1. After climbing up to the tower, installation engineer A secures the fixed pulley to the tower platform support and leads the lifting sling through the fixed pulley. 2. Installation engineer C binds the RRU using the lifting sling and secures the traction sling to the RRU handle. 3. Installation 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, install the RRU on the main mounting bracket until the RRU snaps shut, and then unties the sling. The procedure for hoisting the RRU onto the tower is for your reference only. ----End
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.54 7 Installing RRU Cables About This Chapter This section describes the procedures for installing remote radio unit (RRU) cables. 7.1 Cabling Requirements Cables must be routed according to the specified cabling requirements to prevent signal interference. 7.2 Cable Connections This section describes the remote radio unit (RRU) cable connections. 7.3 Installation Process This section describes the process of installing RRU cables. 7.4 RRU Cable List This section provides a remote radio unit (RRU) cable list. 7.5 Installing the RRU PGND Cable This section describes the procedure for installing a remote radio unit (RRU) protection ground (PGND) cable. 7.6 Installing an RRU RF Jumper This section describes the procedure for installing an RRU RF jumper. 7.7 Installing an Inter-RRU RF Cable This section describes the procedure for installing the inter-RRU RF 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 Installing an RRU power cable This section describes the procedure for installing an RRU power cable.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.55 7.11 Installing a CPRI Fiber Optic Cable This section describes the procedure for installing a CPRI fiber optic cable. 7.12 Installing an RRU Alarm Cable This section describes the procedure for installing an RRU alarm cable. 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. 7.1 Cabling Requirements Cables must be routed according to the specified cabling requirements to prevent signal interference. If a cable listed below is not required, skip the routing requirements of the cable. General Cabling Requirements Requirements for Bending Radius z The bending radius of the 7/8'' feeder must be more than 250 mm (9.84 in.), and the bending radius of the 5/4'' feeder must be more than 380 mm (14.96 in.). z The bending radius of the 1/4'' jumper must be more than 35 mm (1.38 in.). The bending radius of the super-flexible 1/2'' jumper must be more than 50 mm (1.97 in.), and the bending radius of the ordinary 1/2'' jumper must be more than 127 mm (5 in.). z The bending radius of the power cable or PGND cable must be at least three times the diameter of the cable. z The bending radius of a fiber optic cable is at least 20 times the diameter of the fiber optic cable, and the minimum bending radius of the breakout cable at each end of the fiber optic cable is 30 mm (1.18 in.). z The bending radius of the E1/T1 cable must be at least three times the diameter of the cable. z The bending radius of the signal cable must be at least five times the diameter of the cable. Requirements for Cable Binding z The same types of cable must be bound together. z Different types of cable must be separately routed with the minimum spacing of 30 mm (1.18 in.) and cannot be entangled. z The cables must be bound tightly and neatly. The sheaths of the cables must not be damaged. z Cable ties are installed in the same direction, and those at the same horizontal line must be in a straight line. z The excess of indoor cable ties is trimmed off, and the excess of outdoor cable ties allows about 5 mm (0.2 in.), without remaining rough edges. z Labels or nameplates must be attached to both ends, joints, or turns of cables after they are installed.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.56 Security Requirements z Cables should be placed away from sharp objects or wall burrs. If these positions are inevitable, protect the cables with protection pipes. z Cables must be routed away from heat sources, or heat-insulation materials are added between cables and heat sources. z Sufficient slack (recommended for about 0.1 m [0.33 ft.]) is provided in cables at turns or the position close to a device, facilitating cable and device maintenance. Indoor Cabling Requirements z Cables are routed indoors through the feeder window. z Drip loops must be made outside the feeder window, and the requirements for the minimum bending radius are met. z When cables are routed indoors, engineers are required indoors for cooperation. z The feeder window must be waterproofed. Outdoor Cabling Requirements z Cables routed outdoors must be led through a pipe when they may be damaged. z AC power cables, transmission cables, and cables buried in the ground must be protected. z If cables at the cabinet bottom need to be routed through a pipe along the ground, lead the pipe into the cabinet base for about 3 m (9.84 ft.) to 5 m (16.4 ft.), not into the cabinet. Block the pipe with waterproof tape or silicon gel, and secure the pipe to the cable hole at the cabinet bottom with metal piece. z If cables at the cabinet bottom need to be routed through a pipe along the metal cable trough, do not lead the pipe into the cabinet base. The cable trough must be sealed and routed through the cable hole at the cabinet bottom. z Cables are secured with cable clips. z Cables are routed neatly along the specified cabling direction and secured with cable clips. z The positions for cable clips are determined onsite. For example, the cable clips for the 7/8" feeder are installed at the spacing of 1.5 m (4.92 ft.) to 2 m (6.56 ft.) in the same direction, and the cable clips for the power cables are installed at the spacing of 1 m (3.28 ft.) to 1.5 m (4.92 ft.) in the same direction. z Cable clips must be vertical with cables, and the cables in a cable clip must be parallel. z After routing cables neatly and correctly, tighten the screws on cable clips. Secure cables on the cable tray, as shown in Figure 7-1.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.57 Figure 7-1 Securing cables on the cable tray Secure cables on the tower, as shown in Figure 7-2.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.58 Figure 7-2 Securing cables on the tower Special Cabling Requirements Cabling Requirements for Power Cables z Power cables must be installed in the position specified in engineering design documents. z If the length of power cables is insufficient, replace the cables rather than adding connectors or soldering joints to lengthen the cables.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.59 z Cables must be routed by only qualified and trained personnel before all preparations are made. z Cables are routed in an untangled and orderly fashion. z If DC power cables need to be routed on the tower platform, lay out the cables on the guardrail with the shortest distance and route the cables along the guardrail. z If DC power cables need to be routed close to a device on the tower, secure the cables to the guardrail or pole with cable clips. The device cannot be far away from the position for securing the cables. Cabling Requirements for PGND Cables z PGND cables for the base station must be connected to the same ground bar. z PGND cables must be buried in the ground or routed indoors. They should not be routed overhead before they are led into the equipment room. z The exterior of the coaxial wire and the shield layer of the shielded cable must have proper electrical contact with the metal surface of the equipment to which they are connected. z PGND cables and signal cables must be installed in an untangled and orderly fashion. A certain distance must be reserved between them to prevent interference from each other. z Fuses or switches must not be installed on the PGND cables. z Other devices must not be used for electrical connections of the PGND cables. z All the metal parts in the housing of the equipment must be reliably connected to the ground terminal. Cabling Requirements for E1 Cables z E1 cables 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.). z E1 cables are routed straightly and bound neatly with cable ties. z Sufficient slack is provided in E1 cables at turns. Cabling Requirements for Fiber Optic Cables z Fiber optic cables must be routed by at least three qualified and trained personnel before all preparations are made. z Fiber optic cables are used within the temperature range of -40°C to 60°C. If the current temperature is out of the range, make protection measures or route the cables again. z Cables are routed in an untangled and orderly fashion. z Do not bind fiber optic cables at turns. z Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the cables away from sharp objects. z When fiber optic cables are routed, the excess of the cables must be coiled around special devices, such as a fiber coiler. z When coiling fiber optic cables, apply even strength. Do not bend the cables with force. z Vacant optical connectors must be covered with dustproof caps. z Fiber optic cables cannot be squeezed by the cabinet door when routed through the cabinet. z If fiber optic cables need to be routed on the tower platform, lay out the cables on the guardrail with the shortest distance and route the cables along the guardrail.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.60 z If fiber optic cables need to be routed close to a device on the tower, secure the cables to the guardrail or pole with cable clips. The device cannot be far away from the position for securing the cables. z If the fiber optic cables close to a device are too long, coil the excess of the cables and secure them on the tower. 7.2 Cable Connections This section describes the remote radio unit (RRU) cable connections. RRU power cables cannot be cascaded. Figure 7-3 shows the cable connections of a single RRU in a base station in CDMA only (CO) mode. CDMA is short for Code Division Multiple Access. Figure 7-3 Cable connections of a single RRU in a base station in CO mode 1. Protection ground (PGND) cable 2. Radio frequency (RF) jumper 3. Antenna Interface Standards Group (AISG) multi-wire cable for the RRU 4. AISG extension cable for the RRU 5. RRU power cable 6. Common public radio interface (CPRI) optical fiber 7. RRU alarm cable - -
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.61 Figure 7-4 shows the cable connections of a single RRU in a base station in CDMA+UMTS (CU) or CDMA+LTE (CL) mode. UMTS is short for Universal Mobile Telecommunications System. LTE is short for Long Term Evolution. Figure 7-4 Cable connections of a single RRU in a base station in CU or CL mode 1. PGND cable 2. RF jumper 3. AISG multi-wire cable for the RRU 4. AISG extension cable for the RRU 5. RRU power cable 6. CPRI optical fiber 7. RRU alarm cable - - Figure 7-5 shows the cable connections of multiple RRUs in a base station in CO mode.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.62 Figure 7-5 Cable connections of multiple RRUs in a base station in CO mode 1. PGND cable 2. RF jumper 3. RRU power cable 4. CPRI optical fiber - - Figure 7-6 shows the cable connections of multiple RRUs in a base station in CU or CL mode.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.63 Figure 7-6 Cable connections of multiple RRUs in a base station in CU or CL mode 7.3 Installation Process This section describes the process of installing RRU cables. Figure 7-7 shows the process of installing RRU cables.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.64 Figure 7-7 Process of installing RRU cables 7.4 RRU Cable List This section provides a remote radio unit (RRU) cable list. Table 7-1 lists RRU cables. Table 7-1 RRU cable list Cable One End The Other End Connector Installation Position Connector Installation Position RRU PGND Cable M6 OT terminal with a cross-sectional Ground terminal on the RRU M8 OT terminal with a cross-sectional Ground terminal on the ground bar
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.65 Cable One End The Other End Connector Installation Position Connector Installation Position area of 16 mm2 (0.02 in.2 or 6 AWG) area of 16 mm2 (0.02 in.2 or 6 AWG) RRU power cable Easy power receptacle (pressfit type) connector NEG(-) and RTN(+) ports on the RRU Easy power receptacle (pressfit type) connector One of six ports (RRU0-RRU5) on the embedded power subrack unit (EPU) One of six ports (LOAD0-LOAD5) on the direct current distribution unit-11B (DCDU-11B) RRU alarm cable DB15 connector EXT_ALM port on the RRU Cord end terminal External alarm device Multi-mode common public radio interface (CPRI) optical fiber DLC connector CPRI0 port on the RRU CPRI1 port on the RRU DLC connector Code Division Multiple Access (CDMA)+Universal Mobile Telecommunications System (UMTS) mode SFP port on the HCPM or HECM in the baseband unit (BBU) CPRI port on the WBBP in the BBU CDMA+Long Term Evolution (LTE) mode SFP port on the Huawei Enhanced Radio Terminal (HERT) channel processing module (HCPM) or HERT enhance channel processing (HECM) in the
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.66 Cable One End The Other End Connector Installation Position Connector Installation Position BBU CPRI port on the LTE baseband processing unit (LBBP) in the BBU Single-mode CPRI optical fiber DLC connector CPRI0 port on the RRU DLC connector CDMA only (CO) mode SFP port on the HCPM or HECM in the BBU RRU radio frequency (RF) jumper DIN male connector ANT_TX/RXA or ANT_TX/RXB port on the RRU DIN male connector Antenna system Inter-RRU RF cable DB2W2 connector RX_IN/OUT port on the RRU DB2W2 connector RX_IN/OUT port on the RRU AISG multi-wire cable for the RRU Waterproof DB9 male connector RET port on the RRU Standard AISG female connector Standard AISG male connector on the remote control unit (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 male connector on the RCU 7.5 Installing the RRU PGND Cable This section describes the procedure for installing a remote radio unit (RRU) protection ground (PGND) cable.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.67 Context The cross-sectional area of the RRU3642 PGND cable is 16 mm2 (0.02 in.2 or 6 AWG). One end of the cable is terminated with an M6 OT terminal, and other end is terminated with an M8 OT terminal. Procedure Step 1 Prepare an RRU PGND cable. 1. Cut off the extra length of a PGND cable based on the required cable route. 2. Install an OT terminal on each end of the cable by referring to Assembling the OT Terminal and the Power Cable. Step 2 Install the RRU PGND cable. Connect the M6 OT terminal at one end of the PGND cable to the ground terminal at the bottom of the RRU, and connect the M8 OT terminal at the other end of the PGND cable to the external ground bar, as shown in Figure 7-8. Figure 7-8 Installing the RRU PGND cable You must correctly crimp the OT terminals in the direction shown in Figure 7-9.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.68 Figure 7-9 Direction for crimping OT terminals Step 3 Label the installed cable by referring to Attaching a Cable-Tying Label. ----End 7.6 Installing an RRU RF Jumper This section describes the procedure for installing an RRU RF jumper. Procedure Step 1 Link the DIN connector at one end of the RF jumper to the ANT port and use a torque wrench to tighten the connector to 25 N·m (221.27 lbf·in.), as shown in Figure 7-10. Figure 7-10 Installing an RRU RF jumper
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.69 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 jumper by referring to Figure 7-11. Figure 7-11 Waterproofing a connector of the RF jumper (1) Waterproof tape (2) PVC insulation tape z Before wrapping waterproof tape, stretch the tape evenly until the width of the tape is half of its original width. z Wrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape overlaps more than 50% of the preceding layer. 1. Wrap each connector with three layers of waterproof tape, from bottom up, then from top down, and finally from bottom up. Start the wrapping at the position 50 mm (1.97 in.) away from the bottom of the connector. 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. 2. Wrap each connector with three layers of PVC insulation tape, from bottom up, then from top down, and finally from bottom up. Start the wrapping at the position 30 mm (1.18 in.) away from the bottom of the connector. 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 4 Check the dustproof caps on antenna connectors. In outdoor scenarios, dustproof caps must be waterproofed, as shown in Figure 7-12.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.70 Do not remove dustproof caps from vacant antenna connectors. Figure 7-12 Waterproofing a dustproof cap (1) Dustproof cap (2) Waterproof tape (3) PVC insulation tape z Before wrapping waterproof tape, stretch the tape evenly until the width of the tape is half of its original width. z Wrap each layer of tape around the connector tightly and neatly, and ensure that each layer of tape overlaps more than 50% of the preceding layer. 1. Verify that dustproof caps are not removed. 2. Wrap each dustproof cap with three layers of waterproof 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 cap tightly. 3. Wrap each dustproof cap 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 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 Plate Label. Step 7 Attach colored insulation tapes to the jumper by referring to Attaching the Color Ring. ----End 7.7 Installing an Inter-RRU RF Cable This section describes the procedure for installing the inter-RRU RF cable.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.71 Procedure Step 1 Link the DB2W2 connector at one end of the RF cable to the RX_IN/OUT port of an RRU, and link the other end to the RX_IN/OUT port of the other RRU, as shown in Figure 7-13. Figure 7-13 Installing an inter-RRU RF cable Step 2 Lay out the cable by referring to 7.1 Cabling Requirements, and then bind the cable using cable ties. Step 3 Label the installed cable by referring to Attaching an L-Shaped Label. ----End 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. Context When 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 z 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 multi-wire cable to the RET port on the RRU bottom, as shown in Figure 7-14.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.72 Figure 7-14 Installing an RRU AISG multi-wire cable 2. Connect the other end of the cable to the standard AISG male connector on the RCU. 3. Lay out the cable by referring to 7.1 Cabling Requirements, and then bind the cable using cable ties. 4. Label the installed cable by referring to Attaching an L-Shaped Label. z 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 7-15. Figure 7-15 Installing an RRU AISG multi-wire cable
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.73 2. Connect the other end of the AISG extension cable to the standard AISG male connector on the RCU, as shown in Figure 7-16. Figure 7-16 Installing an RRU AISG multi-wire cable 3. Lay out the cable by referring to 7.1 Cabling Requirements, and then bind the cable using cable ties. 4. Label the installed cable by referring to Attaching an L-Shaped Label. ----End 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. Procedure Step 1 Wear ESD gloves. 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 lower the handle to open the cover plate, as shown in Figure 7-17.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.74 Figure 7-17 Opening the cover plate of the RRU cabling cavity (1) Protection screw Figure 7-18 shows the RRU cabling cavity. Figure 7-18 RRU cabling cavity (1) Cover plate (2) Cable diagram on labels (3) Cable trough for the fiber optic cable (4) Cable trough for the power cable (5) Cable trough for the alarm cable (6) Waterproof block (7) Clip (8) Cabling cavity - Step 3 Loosen the screws on the clip, and open the clip, as shown Figure 7-19. Open the clip only for the associated cable.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.75 Figure 7-19 Opening clips ----End 7.10 Installing an RRU power cable This section describes the procedure for installing an RRU power cable. Prerequisite z An tool-less female connector (pressfit type) is added to the RRU power cable on the RRU side. For details, see 10.1 Adding an Tool-less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side. z A connector or OT terminals are added to the RRU power cable on the power device side. For details, see the DBS3900 Installation Guide. Context The cross-sectional area of the RRU power cable is 6 mm2 (0.009 in.2). Procedure z Install an RRU power cable that feeds power to an RRU from a DCDU-11B when the DCDU-11B is configured. 1. Link the tool-less female connector (pressfit type) at one end of the RRU power cable to the power supply socket on the RRU, as shown in Figure 7-20.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.76 Figure 7-20 Installing an RRU power cable Ensure that the exposed shield layer of the power cable is properly tightened using the clip. 2. Link the tool-less female connector (pressfit type) at the other end of the RRU power cable to the LOAD0 port on the DCDU-11B. One DCDU-11B can supply power to a maximum of six RRUs. The RRU power cable can be connected to any wiring terminal from LOAD0 to LOAD5 on the DCDU-11B. 3. Lay out the cable 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. z Install an RRU power cable that feeds power to an RRU from an EPU when the EPU is configured. 1. Link the tool-less female connector (pressfit type) at one end of the RRU power cable to the power supply socket on the RRU, as shown in Figure 7-20. 2. Link the tool-less female connector (pressfit type) at one end of the RRU power cable to the RRU0 port on the EPU subrack.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.77 z The blue core wire in the tool-less female connector (pressfit type) is linked to the left port on the EPU subrack, and the black/brown core wire is linked to the right port on the EPU subrack. z The EPU can supply power to a maximum of six RRUs. The RRU power cable can be connected to any of RRU0 to RRU5 ports on the EPU. 3. Lay out the cable 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. ----End 7.11 Installing a CPRI Fiber Optic Cable This section describes the procedure for installing a CPRI fiber optic cable. Prerequisite Before the installation, single-mode optical modules can be distinguished from multi-mode optical modules in either of the following ways: z SM and MM labels on an optical module: SM indicates a single-mode optical module, and MM indicates a multi-mode optical module. z 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. The optical modules to be installed must match CPRI rates. Context A CPRI fiber optic cable transmits CPRI signals between a BBU and an RRU. For details about CPRI fiber optic cable connections, see the descriptions of connections for the CPRI fiber optic cable in the BBU3900 Hardware Description. Procedure Step 1 Lower the pullers of two optical modules, insert one optical module into the CPRI0 port on the RRU and the other optical module into the CPRI port on the BBU, and then raise the pullers, as shown in Figure 7-21.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.78 Figure 7-21 Installing an optical module The performance of an optical module that is exposed to the air for more than 20 minutes may be abnormal. Therefore, you must insert an fiber optic cable into an unpacked optical module within 20 minutes. Step 2 Connect the end labeled 1A and 1B of the fiber optic cable to the optical module on the RRU side, as shown in Figure 7-22. Figure 7-22 Installing a CPRI fiber optic cable
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.79 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.). Step 3 Connect the end labeled 2A and 2B of the fiber optic cable to the optical module on the BBU side. Step 4 Lay out the fiber optic cable by referring to 7.1 Cabling Requirements, and then bind the cable using cable ties. Step 5 Label the fiber optic cable by referring to Attaching an L-Shaped Label. ----End 7.12 Installing an RRU Alarm Cable This section describes the procedure for installing an RRU alarm cable. Procedure Step 1 Link the DB15 connector at one end of the RRU alarm cable to the EXT_ALM port on the RRU, and link the eight cord end terminals at the other end to the external alarm device, as shown in Figure 7-23. Figure 7-23 Installing an RRU alarm cable
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.80 Step 2 Lay out the cable by referring to 7.1 Cabling Requirements, and then bind the cable using cable ties. Step 3 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 7-24. Figure 7-24 Closing clips Ensure that the exposed shield layer of the power cable is properly tightened using the clip. Step 2 Insert waterproof blocks into vacant cable troughs in the cabling cavity, as shown in Figure 7-25.
RRU3642 Installation Guide 7 Installing RRU Cables Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.81 Figure 7-25 Correct placement 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 7-26. Figure 7-26 Closing the cover plate of the RRU cabling cavity (1) Protection screw z Before tightening the screws on the cover plate, ensure that cables and waterproof blocks are properly inserted into troughs. z 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
RRU3642 Installation Guide 8 Checking the RRU Hardware Installation Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.82 8 Checking the RRU Hardware Installation After an RRU is installed, check the hardware installation. Table 8-1 provides the checklist for the RRU hardware installation. Table 8-1 Checklist for the RRU hardware installation SN Item 1 The position for each device conforms to the engineering drawing and meets the space requirement. Sufficient space is reserved for equipment maintenance. 2 The RRU is securely installed. 3 The cover plate is securely installed on the RRU cabling cavity. 4 Waterproof blocks are securely installed in vacant cable troughs of the RRU cabling cavity, and the cover plate for the cabling cavity is securely installed. In addition, vacant RF ports are covered with dustproof caps and the caps are tightened. 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 cables. 9 The protection grounding of the RRU and the surge protection grounding of the building share one group of ground conductors. 10 The connectors of each signal cable are intact and securely linked, and these cables are not damaged or broken. 11 Labels are correct, legible, and complete at both ends of each cable, feeder, and jumper.
RRU3642 Installation Guide 9 Powering On an RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.83 9 Powering On an RRU After all the devices are installed, check the power-on status of an RRU. After you unpack an RRU, you must power on 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.
RRU3642 Installation Guide 9 Powering On an RRU Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.84 Figure 9-1 RRU power-on check process
RRU3642 Installation Guide 10 Appendix Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.85 10 Appendix About This Chapter This section describes the procedure for adding an easy power receptacle (pressfit type) connector. 10.1 Adding an Tool-less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side This section describes the procedure for adding an tool-less female connector (pressfit type) to the RRU power cable on the RRU side. 10.1 Adding an Tool-less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side This section describes the procedure for adding an tool-less female connector (pressfit type) to the RRU power cable on the RRU side. Procedure Step 1 Figure 10-1 shows the cable diagram on labels.
RRU3642 Installation Guide 10 Appendix Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.86 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. Figure 10-3 Stripping the specified length of sheath Step 4 Strip a specified length of sheath off each core wire. The length must be consistent with the length of the notch in the tool-less female connector (pressfit type), as shown in Figure 10-4.
RRU3642 Installation Guide 10 Appendix Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.87 Figure 10-4 Stripping the sheath off each core wire Figure 10-5 Matched length Step 5 Add an tool-less female connector (pressfit type) to two core wires. 1. Tighten the screws using a Phillips screwdriver, as shown in Figure 10-6. Figure 10-6 Tightening screws 2. Connect the blue core wire labeled NEG(-) to the - port and the black/brown core wire labeled RTN(+) to the + port on the tool-less female connector (pressfit type), and then tighten the screws using a Phillips screwdriver, as shown in Figure 10-7.
RRU3642 Installation Guide 10 Appendix Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.88 Figure 10-7 Adding an tool-less female connector (pressfit type) 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 Each core wire is exposed outside the tool-less female connector (pressfit type) for 1.5 mm (0.059 [in.]), as shown in Figure 10-9.
RRU3642 Installation Guide 10 Appendix Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.89 Figure 10-9 Inserting core wires into the tool-less female connector (pressfit type) ----End

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