RRU3642 V400 Installation Guide Issue 01 Date 2011-12-27 HUAWEI TECHNOLOGIES CO., LTD.
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.
RRU3642 Installation Guide About This Document 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.
RRU3642 Installation Guide About This Document 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.
RRU3642 Installation Guide About This Document 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.
RRU3642 Installation Guide About This Document 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.
RRU3642 Installation Guide Contents Contents About This Document .................................................................................................................... ii 1 Changes in the RRU3642 Installation Guide ........................................................................... 1 2 Installation Preparations ............................................................................................................. 2 2.1 Reference Documents .......................................
RRU3642 Installation Guide Contents 7.3 Installation Process......................................................................................................................................... 63 7.4 RRU Cable List .............................................................................................................................................. 64 7.5 Installing the RRU PGND Cable...............................................................................................................
RRU3642 Installation Guide 1 Changes in the RRU3642 Installation Guide 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 2 Installation Preparations 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.
RRU3642 Installation Guide 2 Installation Preparations 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 Torque wrench 5 mm Capacity: 17 mm [0.67 in.], 21 mm [0.82 in.], and 32 mm [1.26 in.] Combination wrench (M3 to M6) (M3 to M6) Multimeter Marker (diameter ≤ 10 mm [0.39 in.]) Capacity: 17 mm [0.67 in.], 21 mm [0.82 in.
RRU3642 Installation Guide 2 Installation Preparations 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 3 Information About the Installation 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.
RRU3642 Installation Guide 3 Information About the Installation 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 3 Information About the Installation 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 Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 3 Information About the Installation Item (2) Ports in the cabling cavity (3) Indicators 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 RTN (+) Power supply port NEG (-) CPRI0 Optical/electrical port 0 CPRI1 Optical/electrical port 1 EXT_ALM Port for alarm reporting RUN See RRU Indicators.
RRU3642 Installation Guide 3 Information About the Installation 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.
RRU3642 Installation Guide 3 Information About the Installation Label CPRI0/IR0 CPRI1/IR1 Color Red and green Red and green 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. 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.
RRU3642 Installation Guide 3 Information About the Installation 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.
RRU3642 Installation Guide 3 Information About the Installation 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 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 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.
RRU3642 Installation Guide 3 Information About the Installation 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).
RRU3642 Installation Guide 3 Information About the Installation 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 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 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 3 Information About the Installation 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.
RRU3642 Installation Guide 3 Information About the Installation 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 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.
RRU3642 Installation Guide 3 Information About the Installation 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 3 Information About the Installation Figure 3-24 Minimum vertical spacing between RRUs Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 4 Unpacking the Equipment 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.
RRU3642 Installation Guide 4 Unpacking the Equipment 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 ...
RRU3642 Installation Guide 5 Installation Process 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 Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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 Figure 6-5 Three RRUs installed on a pole in centralized mode Figure 6-6 Four RRUs installed on a pole in centralized mode Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 6 Installing the RRU 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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 Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 6 Installing the RRU ----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.
RRU3642 Installation Guide 6 Installing the RRU Figure 6-40 Binding the RRU (1) Lifting sling Issue 01 (2011-12-27) (2) Lifting eye (3) Traction sling Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 6 Installing the RRU 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables Figure 7-1 Securing cables on the cable tray Secure cables on the tower, as shown in Figure 7-2. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 7 Installing RRU Cables 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 7 Installing RRU Cables 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables Cable One End Connector The Other End Installation Position area of 16 mm2 (0.02 in.2 or 6 AWG) RRU power cable Easy power receptacle (pressfit type) connector Connector Installation Position area of 16 mm2 (0.02 in.
RRU3642 Installation Guide 7 Installing RRU Cables Cable One End Connector The Other End 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 RRU radio frequency (RF) jumper DIN male connector ANT_TX/RX A or ANT_TX/RX B 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 m
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 7 Installing RRU Cables 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.
RRU3642 Installation Guide 8 8 Checking the RRU Hardware Installation 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.
RRU3642 Installation Guide 9 Powering On an RRU 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. Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 9 Powering On an RRU Figure 9-1 RRU power-on check process Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3642 Installation Guide 10 Appendix 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.
RRU3642 Installation Guide 10 Appendix 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.
RRU3642 Installation Guide 10 Appendix 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.
RRU3642 Installation Guide 10 Appendix 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 Figure 10-9 Inserting core wires into the tool-less female connector (pressfit type) ----End Issue 01 (2011-12-27) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
