RRU3269 Installation Guide Issue Draft A Date 2014-10-31 HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2014. 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.
RRU3269 Installation Guide About This Document About This Document Purpose This document describes the process of installing a DC blade RRU3269 (referred to as RRU in this document). Product Version The following table lists the product version related to this document. Product Name Solution Version Product Version DBS3900 l SRAN9.0 and later versions V100R009C00 and later versions l eRAN7.
RRU3269 Installation Guide About This Document 4 Unpacking the Equipment This chapter describes how to unpack and check the delivered equipment to ensure that all the materials are included and intact. 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.
RRU3269 Installation Guide About This Document Symbol Description Calls attention to important information, best practices and tips. NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration. General Conventions The general conventions that may be found in this document are defined as follows. Convention Description Times New Roman Normal paragraphs are in Times New Roman.
RRU3269 Installation Guide About This Document The GUI conventions that may be found in this document are defined as follows. Convention Description Boldface Buttons, menus, parameters, tabs, window, 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 Operations The keyboard operations that may be found in this document are defined as follows.
RRU3269 Installation Guide Contents Contents About This Document.....................................................................................................................ii 1 Changes in the RRU3269 Installation Guide...........................................................................1 2 Installation Preparations..............................................................................................................2 2.1 Reference Documents............................................
RRU3269 Installation Guide Contents 7.10 Installing a CPRI Optical Cable.................................................................................................................................55 7.11 Installing an RRU Power Cable..................................................................................................................................57 7.12 Closing the Cover Plate of an RRU Cabling Cavity......................................................................................
RRU3269 Installation Guide 1 1 Changes in the RRU3269 Installation Guide Changes in the RRU3269 Installation Guide This chapter describes the changes in the RRU3269 Installation Guide. Draft A (2014-10-31) This is a draft. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 2 Installation Preparations 2 Installation Preparations About This Chapter This chapter describes the reference documents, tools, and instruments that must be ready before the installation. In addition, it specifies the skills and prerequisites that installation engineers must have. 2.1 Reference Documents Before the installation, you must be familiar with reference documents. 2.
RRU3269 Installation Guide 2 Installation Preparations 2.1 Reference Documents Before the installation, you must be familiar with reference documents. The following reference documents are required during RRU installation: l RRU3269 Hardware Description l DBS3900 Installation Guide l OCB User Guide l OCB-01M User Guide 2.2 Tools and Instruments You must prepare the following tools and instruments before the installation.
RRU3269 Installation Guide 2 Installation Preparations Utility knife Cable cutter Adjustable wrench (size ≥ 32 mm [1.26 in.]) Torque wrench Size: 18 mm (0.71 in.) and 32 mm (1.26 in.) Combination wrench Size: 18 mm (0.71 in.) and 32 mm (1.26 in.) Torque screwdriver Level Torque socket 5 mm 5 mm (M3 to M6) (M3 to M6) Multimeter Marker (diameter ≤ 10 mm [0.39 in.
RRU3269 Installation Guide 2 Installation Preparations 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: l The customer's technical engineers must be trained by Huawei and be familiar with the proper installation and operation methods.
RRU3269 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, indicators, installation options 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 ports on the RRU panels. An RRU has a bottom panel, cabling cavity panel, and indicator panel. 3.
RRU3269 Installation Guide 3 Information About the Installation 3.1 RRU Exterior This section describes the exterior and dimensions of an RRU. Figure 3-1 shows the exterior of an RRU. Figure 3-1 RRU exterior Figure 3-2 shows RRU dimensions. Figure 3-2 RRU dimensions Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 3 Information About the Installation 3.2 RRU Ports This section describes ports on the RRU panels. An RRU has a bottom panel, cabling cavity panel, and indicator panel. Figure 3-3 and Figure 3-4 show ports on the RRU1 and RRU2 panels, respectively. Figure 3-3 Ports on the RRU1 panels Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 3 Information About the Installation Figure 3-4 Ports on the RRU2 panels Table 3-1 and Table 3-2 show ports at the bottom, ports in the cabling cavity, and indicators on RRU1 and RRU2, respectively.
RRU3269 Installation Guide 3 Information About the Installation Item (3) Indicator Silkscreen Remarks CPRI1 Optical/electrical port 1, connected to the BBU RUN For details, see 3.3 RRU Indicators.
RRU3269 Installation Guide 3 Information About the Installation NOTE l The port for transmitting RET signals is determined by the software. l Connect the CPRI0 port to the BBU by default in the single-mode scenario. 3.3 RRU Indicators This section describes six indicators on an RRU. They indicate the running status of the RRU. For detailed positions of RRU indicators, see 3.2 RRU Ports. Table 3-3 describes RRU indicators.
RRU3269 Installation Guide 3 Information About the Installation Indicator CPRI0 CPRI1 Color Red and green Red and green Status Meaning 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 running properly. Steady red An optical module fails to receive or transmit signals possibly because the optical module is faulty or the optical fiber is broken.
RRU3269 Installation Guide 3 Information About the Installation NOTICE l 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.). l When the diameter of a pole ranges from 60 mm (2.36 in.) to 76 mm (2.99 in.), a maximum of three RRUs can be installed on the pole and the side-mounted installation is recommended. l Only a pole whose diameter ranges from 76 mm (2.99 in.) to 114 mm (4.49 in.) supports more than three RRUs.
RRU3269 Installation Guide 3 Information About the Installation Figure 3-7 Three RRUs installed in centralized mode Figure 3-8 shows four RRUs installed in centralized mode. Figure 3-8 Four RRUs installed in centralized mode NOTE For details about how to install RRUs on an IFS06, see DBS3900 (ICR) Installation Guide. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 3 Information About the Installation 3.5 Installation Clearance Requirements of an RRU This section describes the requirements for the installation clearance of multiple RRUs and the requirements for the installation spacing between RRUs. 3.5.1 Installation Clearance for Multiple RRUs This section describes the recommended and minimum installation clearance for multiple RRUs.
RRU3269 Installation Guide 3 Information About the Installation Figure 3-10 Minimum installation clearance for multiple RRUs installed in centralized mode 3.5.2 Installation Spacing Between RRUs This section describes the horizontal and vertical spacing between RRUs. Figure 3-11 shows the recommended horizontal spacing between RRUs. Figure 3-11 Recommended horizontal spacing between RRUs Figure 3-12 shows the recommended vertical spacing between RRUs.
RRU3269 Installation Guide 3 Information About the Installation Figure 3-12 Recommended vertical spacing between RRUs Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 4 Unpacking the Equipment 4 Unpacking the Equipment This chapter describes how to unpack and check the delivered equipment to ensure that all the materials are included and intact. Context NOTE When transporting, moving, or installing the equipment, components, or parts, you must: l Prevent them from colliding with doors, walls, shelves, or other objects.
RRU3269 Installation Guide 4 Unpacking the Equipment If ... Then ... The outer packing is intact Go to Step 3. The outer packing is severely damaged or Find out the cause and report it to the local soaked Huawei office. 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 Sign the Packing List with the customer.
RRU3269 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. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 5 Installation Process Figure 5-1 Process of installing an RRU Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 6 Installing the RRU 6 Installing the RRU About This Chapter This chapter describes the procedure for installing the RRU. The procedure for installing the RRU varies depending on installation options. 6.1 Mounting Kits for an RRU This section describes the mounting kits for an RRU in centralized mode. 6.2 Installing the RRU on a Pole This section describes the procedure for installing the RRU on a pole in centralized mode. 6.
RRU3269 Installation Guide 6 Installing the RRU 6.1 Mounting Kits for an RRU This section describes the mounting kits for an RRU in centralized mode. Figure 6-1 shows the mounting kits for an RRU in centralized mode. Figure 6-1 Mounting kits for an RRU (1) Bracket assembly (2) Backplane (3) L plate 6.2 Installing the RRU on a Pole This section describes the procedure for installing the RRU on a pole in centralized mode.
RRU3269 Installation Guide 6 Installing the RRU Figure 6-2 Securing the upper mounting bracket on the pole Step 2 Install screws on the backplane, and secure the backplane to the RRU by tightening the screws to 5 N·m (44.25 lbf·in.), as shown in Figure 6-3. Figure 6-3 Securing the backplane to the RRU NOTICE The installing method in Figure 6-4 is incorrect. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 6 Installing the RRU Figure 6-4 Incorrect installing method Step 3 Install the RRU on the upper mounting bracket, and tighten the screws on the bracket to 40 N·m (354.03 lbf·in.) to 45 N·m (398.28 lbf·in.), as shown in Figure 6-5.
RRU3269 Installation Guide 6 Installing the RRU Figure 6-6 Securing the lower mounting bracket Step 5 Install the backplane on the second RRU, similar to step2. Step 6 Install the second RRU on the upper mounting bracket on the pole, and tighten the screws on the bracket to 40 N·m (354.03 lbf·in.) to 45 N·m (398.28 lbf·in.),as shown in Figure 6-7.
RRU3269 Installation Guide 6 Installing the RRU Figure 6-8 Installing the backplane and L plate on the lower mounting bracket NOTE Install the third RRU and the RRU on the other side of the pole the same way as the second RRU. The tightening torque is similar to that for the first RRU. NOTICE If no clearance is reserved for waterproofing RF ports, remove the safety belt before wrapping waterproof tape, and then reinstall the safety belt. ----End 6.
RRU3269 Installation Guide 6 Installing the RRU Figure 6-9 Installing upper and lower mounting brackets and binding the pole (1) Traction sling 2. (2) Lifting sling Install the backplane on the RRU, and bind the RRU using a lifting sling and traction sling, as shown in Figure 6-10. Figure 6-10 Installing the backplane and binding the RRU (1) Handle Issue Draft A (2014-10-31) (2) Lifting sling (3) Traction eye Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 6 Installing the RRU NOTICE l The handle has a capacity of bearing at least four times the weight of the RRU. l The binding methods in Figure 6-11 and Figure 6-12 are incorrect. Figure 6-11 Incorrect binding method (1) Figure 6-12 Incorrect binding method (2) 3. Hoist the pole onto the tower, as shown in Figure 6-13. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 6 Installing the RRU Figure 6-13 Hoisting the pole onto the tower (1) Traction sling 4. (2) Lifting sling (3) Fixed pulley Hoist the RRU onto the tower, as shown in Figure 6-14. Figure 6-14 Hoisting the RRU onto the tower Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 6 Installing the RRU (1) Lifting sling (2) Fixed pulley (3) Traction sling Step 2 Install the RRU on the tower. 1. Align the backplane with the holes on the upper mounting bracket, install screws on the holes, and secure the backplane to the upper mounting bracket by tightening the screws, as shown in Figure 6-15. Figure 6-15 Installing the RRU on the pole 2. Install the backplane and the L plate on the lower mounting bracket, as shown in Figure 6-16.
RRU3269 Installation Guide 6 Installing the RRU NOTICE If no clearance is reserved for waterproofing RF ports, remove the safety belt before wrapping waterproof tape, and then reinstall the safety belt. ----End Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 7 Installing RRU Cables 7 Installing RRU Cables About This Chapter This chapter describes the procedure for installing RRU cables. 7.1 Cabling Requirements Cables must be routed according to the specified cabling requirements to prevent signal interference. 7.2 RRU Cable Connections This section describes RRU cable connections. 7.3 Installing RRU Cables This chapter describes the procedure for installing RRU cables. 7.4 RRU Cables This section describes RRU cable connections.
RRU3269 Installation Guide 7 Installing RRU Cables This section describes the procedure for closing the cover plate of an RRU cabling cavity. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 7 Installing RRU Cables 7.1 Cabling Requirements Cables must be routed according to the specified cabling requirements to prevent signal interference. NOTE If a cable listed below is not required, skip the routing requirements of the cable. General Cabling Requirements Requirements for Bending Radius l 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.).
RRU3269 Installation Guide 7 Installing RRU Cables l Drip loops must be made outside the feeder window, and the requirements for the minimum bending radius are met. l When cables are routed indoors, engineers are required indoors for cooperation. l The feeder window must be waterproofed. Outdoor Cabling Requirements l Cables routed outdoors must be led through a pipe when they may be damaged. l AC power cables, transmission cables, and cables buried in the ground must be protected.
RRU3269 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 Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-2 Securing cables on the tower Special Cabling Requirements Cabling Requirements for Power Cables l Power cables must be installed in the position specified in engineering design documents. l If the length of power cables is insufficient, replace the cables rather than adding connectors or soldering joints to lengthen the cables. l Cables must be routed by only qualified and trained personnel before all preparations are made.
RRU3269 Installation Guide 7 Installing RRU Cables l 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 l PGND cables for the base station must be connected to the same ground bar. l PGND cables must be buried in the ground or routed indoors.
RRU3269 Installation Guide 7 Installing RRU Cables l Do not bind fiber optic cables at turns. l Do not stretch, step on, or place heavy objects on fiber optic cables. Keep the cables away from sharp objects. l When fiber optic cables are routed, the excess of the cables must be coiled around special devices, such as a fiber coiler. l An unarmored fiber optic cable must be bound using binding straps.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-6 CPRI fiber optic cables routed through the cabinet (2) Figure 7-7 FE/GE cables routed through the cabinet l 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. l 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.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-8 Cable connections of a single RRU (1) RRU PGND cable (2) RRU RF jumper (3) RRU AISG multi-wire cable (4) RRU AISG extension cable (5) RRU power cable (6) CPRI optical fiber (7) RRU alarm cable - - Figure 7-9 shows the cable connections of multiple RRUs. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-9 Cable connections of multiple RRUs (1) RRU PGND cable (2) RRU RF jumper (3) RRU power cable (4) CPRI optical fiber - - 7.3 Installing RRU Cables This chapter describes the procedure for installing RRU cables. Figure 7-10 shows the procedure for installing RRU cables. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-10 Procedure for installing RRU cables 7.4 RRU Cables This section describes RRU cable connections. Table 7-1 lists RRU cables. Table 7-1 RRU cables Cable RRU PGND Cable Issue Draft A (2014-10-31) One End The Other End Connector Installation Position Connector Installation Position OT terminal (M6, 16 mm2 or 0.025 in.2) Ground terminal on the RRU OT terminal (M8, 16 mm2 or 0.025 in.
RRU3269 Installation Guide 7 Installing RRU Cables Cable One End The Other End Connector Installation Position Connector Installation Position RRU Power Cable Tool-less female connector (pressfit type) NEG(-) and RTN(+) ports on the RRU Depending on the power supply equipment External power equipment RRU Alarm Cable DB15 male connector EXT_ALM port on the RRU Cord end terminal External alarm device CPRI Fiber Optic Cable DLC connector CPRI0 port on the RRU DLC connector CPRI port on a
RRU3269 Installation Guide 7 Installing RRU Cables Connect the M6 OT terminal at one end of the PGND cable to the ground terminal at the RRU bottom and the M8 OT terminal at the other end to the external ground bar, as shown in Figure 7-11. Figure 7-11 Installing an RRU PGND cable NOTE Crimp OT terminals in correct positions, as shown in Figure 7-12. Figure 7-12 Correct position of an OT terminal Step 3 Label the installed cable according to the instructions in Attaching a Cable-Tying Label.
RRU3269 Installation Guide 7 Installing RRU Cables Procedure Step 1 Connect the DIN male connector at one end of the RRU RF jumper to the ANT port on the RRU, and use a torque wrench to tighten the connector to 25 N·m (221.27 lbf·in.), as shown in Figure 7-13.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-14 Waterproofing a connector of the RF jumper (1) Waterproof tape (2) PVC insulation tape NOTE l Before wrapping waterproof tape, stretch the tape evenly until the length of the tape becomes twice its original length. l Do not stretch the PVC insulation tape when wrapping the PVC insulation tape. l 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.
RRU3269 Installation Guide 7 Installing RRU Cables NOTICE Do not remove dustproof caps from vacant antenna connectors. Figure 7-15 Waterproofing a dustproof cap (1) Dustproof cap (2) Waterproof tape (3) PVC insulation tape NOTE l Before wrapping waterproof tape, stretch the tape evenly until the length of the tape becomes twice its original length. l Do not stretch the PVC insulation tape when wrapping the PVC insulation tape.
RRU3269 Installation Guide 7 Installing RRU Cables Step 7 Attach color-coding to the installed RF jumper according to the instructions in Attaching the Color Ring. ----End 7.7 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.
RRU3269 Installation Guide 7 Installing RRU Cables l 3. Use an M3 Phillips screwdriver to tighten the posts on both sides of the waterproof DB9 connector to 0.4 N·m (3.54 lbf·in.). 4. Connect the other end of the cable to the standard AISG male connector on the RCU. 5. Route the cables according to the instructions in 7.1 Cabling Requirements, and then use cable ties to bind the cables. 6. Label the installed cables according to the instructions in Attaching an L-Shaped Label.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-18 Installing an RRU AISG extension cable 5. Route the cables according to the instructions in 7.1 Cabling Requirements, and then use cable ties to bind the cables. 6. Label the installed cables according to the instructions in Attaching an L-Shaped Label. ----End 7.8 Installing an RRU Alarm Cable This section describes the procedure for installing an RRU alarm cable.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-19 Installing an RRU alarm cable NOTE Install the waterproof DB15 male connector on the RRU alarm cable with caution, preventing the pin assignment from being damaged. Step 3 Connect the eight cord end terminals at the other end to external alarm devices. NOTE Use insulating adhesive tapes to wrap cord end terminals that are not in use and fix them at a proper position based on the onsite situations.
RRU3269 Installation Guide 7 Installing RRU Cables Step 5 Label the installed cables according to the instructions in 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. NOTICE Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
RRU3269 Installation Guide 7 Installing RRU Cables NOTE Open the clip only for the associated cable. Figure 7-22 Opening clips Step 4 Remove the waterproof block. NOTE Remove only the waterproof blocks for the cables to be installed. ----End 7.10 Installing a CPRI Optical Cable This section describes the procedure for installing a CPRI optical cable.
RRU3269 Installation Guide 7 Installing RRU Cables Context l A CPRI optical cable transmits CPRI signals between a BBU and an RRU. Procedure Step 1 Lower the pullers of two optical modules, insert one optical module into the port on the RRU and the other optical module into the CPRI port on the BBU, and raise the pullers, as shown in Figure 7-23. Figure 7-23 Installing an optical module NOTICE The performance of an optical module that is exposed to the air for more than 20 minutes may be abnormal.
RRU3269 Installation Guide 7 Installing RRU Cables Figure 7-24 Installing a CPRI optical cable NOTICE To avoid any damage to optical cables, the cables connected to the RRU must be installed according to the installation process. For details about the installation process, see 7.3 Installing RRU Cables. Step 3 Connect the end labeled 2A and 2B of the optical cable to the optical module on the BBU side. Step 4 Route the cables according to the instructions in 7.
RRU3269 Installation Guide 7 Installing RRU Cables Prerequisites l A connector or OT terminals are added to the RRU power cable on the power device side. For details, see DBS3900 Installation Guide. Context If a power device provided by the customer is used, the recommended specification of the circuit breaker on this power device is 15 A to 30 A. CAUTION Ensure that the RRU power cable must be connected to the RRU first and then to the power device.
RRU3269 Installation Guide 7 Installing RRU Cables NOTE l A DCDU-11B/DCDU-12B can supply power to a maximum of six RRUs. Ensure that the RRU power cable is connected to one of LOAD0 to LOAD5 ports on the DCDU-11B/DCDU-12B. l One EPU can supply power to a maximum of six RRUs. Ensure that the RRU power cable is connected to one of RRU0 to RRU5 ports on the EPU.
RRU3269 Installation Guide 7 Installing RRU Cables Step 2 Insert waterproof blocks into vacant cable troughs in the cabling cavity, as shown in Figure 7-27. NOTICE Ensure that cables and waterproof blocks are properly inserted into troughs. Figure 7-27 Correct placement of waterproof blocks Step 3 Close the cover plate of the RRU cabling cavity. Use an M5 torque screwdriver to partially tighten the screws on the cover plate in the sequence shown in Figure 7-28. Then tighten the screws to 2 N·m (17.
RRU3269 Installation Guide 7 Installing RRU Cables Step 4 Take off the ESD gloves, and pack up all the tools. ----End Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 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.
RRU3269 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. NOTICE 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. NOTE For details about how to power on an RRU, see Powering On an RRU.
RRU3269 Installation Guide 9 Powering On an RRU Figure 9-1 RRU power-on check process (a) The normal input voltage of an RRU is -48 V DC. The voltage of the external power supply should range from -36 V DC to -57 V DC. (b) The RUN indicator on the RRU is on for 1s and off for 1s. The ALM indicator is steady off. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 10 Appendix 10 Appendix About This Chapter 10.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side This section describes the procedure for adding a tool-less female connector (pressfit type) to the RRU power cable on the RRU side. Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
RRU3269 Installation Guide 10 Appendix 10.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side This section describes the procedure for adding a tool-less female connector (pressfit type) to the RRU power cable on the RRU side. Context Figure 10-1 shows the cable diagram on labels.
RRU3269 Installation Guide 10 Appendix Step 2 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 3 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.
RRU3269 Installation Guide 10 Appendix 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, and then use a torque screwdriver to tighten the M4 screws to 1.4 N·m (12.39 lbf·in.), as shown in Figure 10-7.
RRU3269 Installation Guide 10 Appendix Figure 10-8 Stripping the sheath off the power cable NOTICE 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. Figure 10-9 Inserting core wires into the tool-less female connector (pressfit type) ----End Issue Draft A (2014-10-31) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
