Huawei Technologies RU3260 Remote Radio Unit User Manual Hardware Description

Huawei Technologies Co.,Ltd Remote Radio Unit Hardware Description

Contents

User Manual

RU3260 Hardware Description Issue 03 Date 2014-01-20 HUAWEI TECHNOLOGIES CO., LTD.
Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. i 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. 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 a 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
RRU3260 Hardware Description About This Document Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. ii About This Document Purpose This document provides reference for planning and deploying a DC blade RU3260 (referred to as RU in this document). It presents the exterior and describes the ports, functions, cable types, connector specifications, and cable connections of the RU. Product Versions The following table lists the product versions related to this document. Product Name Solution Version Product Version DBS3900 SRAN6.0 and later versions V100R004C00 and later versions eRAN2.1 and later versions V100R003C00 and later versions Intended Audience This document is intended for:  Base station installation engineers  System engineers  Site maintenance engineers Organization 1 Changes in RU3260 Hardware Description This chapter describes the changes in RU3260 Hardware Description. 2 RU Introduction This chapter describes the exterior and function of the RU as well as the ports and indicators on the RU. 3 RU Cables
RRU3260 Hardware Description About This Document Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. iii This chapter describes RU cables. 4 RF Cable Connections for the RU3260 RF cable connections for the RU vary depending on the configurations of the RU and antenna. 5 RU Auxiliary Devices This chapter describes RU auxiliary devices. Conventions Symbol Conventions The symbols that may be found in this document are defined as follows. Symbol Description Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results. NOTICE is used to address practices not related to personal injury. 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 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.
RRU3260 Hardware Description About This Document Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. iv 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. 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
RRU3260 Hardware Description About This Document Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. v 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.
RRU3260 Hardware Description Contents Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. vi Contents About This Document .................................................................................................................... ii 1 Changes in RU3260 Hardware Description ............................................................................. 1 2 RU Introduction............................................................................................................................. 2 2.1 RU Exterior ................................................................................................................................................................... 2 2.2 RU Functions ................................................................................................................................................................ 3 2.3 RU Technical Specifications ......................................................................................................................................... 4 2.4 RU Ports ....................................................................................................................................................................... 5 2.5 RU Indicators ................................................................................................................................................................ 7 2.6 Optical Modules............................................................................................................................................................ 8 3 RU Cables ..................................................................................................................................... 10 3.1 RU Cable List ............................................................................................................................................................. 11 3.2 RU PGND Cable......................................................................................................................................................... 12 3.3 RU Power Cable ......................................................................................................................................................... 12 3.4 RU Alarm Cable ......................................................................................................................................................... 13 3.5 CPRI Fiber Optic Cable .............................................................................................................................................. 15 3.6 RU RF Jumper ............................................................................................................................................................ 18 3.7 RU AISG Multi-Wire Cable ....................................................................................................................................... 19 3.8 RU AISG Extension Cable ......................................................................................................................................... 20 4 RF Cable Connections for the RU3260 .................................................................................... 22 5 RU Auxiliary Devices ................................................................................................................. 24 5.1 IFS06 .......................................................................................................................................................................... 24 5.2 OCB ............................................................................................................................................................................ 26
RRU3260 Hardware Description 1 Changes in RU3260 Hardware Description Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 1 1 Changes in RU3260 Hardware Description This chapter describes the changes in RU3260 Hardware Description. 03 (2014-01-20) This is the third official release. Compared with issue 02 (2013-07-30), this issue includes the following new information: 4 RF Cable Connections for the RU3260. Compared with issue 02 (2013-07-30), this issue does not include any changes. Compared with issue 02 (2013-07-30), no information is deleted from this issue. 02 (2013-07-30) This is the second official release. Compared with issue 01 (2013-04-28), this issue does not include any new information. Compared with issue 01 (2013-04-28), this issue includes the following changes: Topic Change Description 2.4 RU Ports Added a detailed description of the alarm port. Compared with issue 01 (2013-04-28), no information is deleted from this issue. 01 (2013-04-28) This is the first official release.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 2 2 RU Introduction About This Chapter This chapter describes the exterior and function of the RU as well as the ports and indicators on the RU. 2.1 RU Exterior This section describes the exterior and dimensions of an RU. 2.2 RU Functions This section describes the main functions of the RU. 2.3 RU Technical Specifications This section describes technical specifications of an RU, including supported modes, frequency bands, RF specifications, engineering specifications, and antenna capabilities. 2.4 RU Ports This section describes ports on the RU panels. An RU has a bottom panel, cabling cavity panel, and indicator panel. 2.5 RU Indicators This section describes six indicators on an RU. They indicate the running status. 2.6 Optical Modules An optical module transmits optical signals between an optical port and a fiber optic cable. 2.1 RU Exterior This section describes the exterior and dimensions of an RU. Figure 2-1 shows an RU.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 3 Figure 2-1 RU exterior Figure 2-2 shows RU dimensions. Figure 2-2 RU dimensions 2.2 RU Functions This section describes the main functions of the RU. The Remote Radio Unit (RU) consists of the high-speed interface unit, signal processing unit, power amplifier, duplexer, extension ports, and power module. Figure 2-3 shows the function structure of the RU.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 4 Figure 2-3 Function structure of the RU For details about the extension ports, see 2.4 RU Ports. The RU performs the following functions:  Receives downlink baseband data from the BBU and sends uplink baseband data to the BBU.  Receives RF signals from the antenna system, down-converts the signals to intermediate frequency (IF) signals, amplifies the IF signals, and performs analog-to-digital conversion. The transmit (TX) channel filters downlink signals, performs digital-to-analog conversion, and up-converts RF signals to the TX band.  Multiplexes receive (RX) and TX signals on the RF channel, which enables these signals to share the same antenna path. It also filters the RX and TX signals.  Provides a built-in Bias Tee (BT). The built-in BT couples RF signals and OOK signals and transmits them through the TX/RX port A. The built-in BT also supplies power to the tower mounted amplifier (TMA).  The RU can be powered by the AC/DC power module. In this case, this RU is called AC RU. For details about the AC/DC power module, see the AC/DC Power Module User Guide or OPM15M User Guide. 2.3 RU Technical Specifications This section describes technical specifications of an RU, including supported modes, frequency bands, RF specifications, engineering specifications, and antenna capabilities. For details about technical specifications of an RU, see section "Technical Specifications of RUs" in the 3900 Series Base Station Technical Description.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 5 2.4 RU Ports This section describes ports on the RU panels. An RU has a bottom panel, cabling cavity panel, and indicator panel. Figure 2-4 shows the ports on the RU panels. Figure 2-4 Ports on the RU panels Table 2-1 describes ports and indicators on the RU panels. Table 2-1 Ports and indicators on the RU panels Item Silkscreen Remarks (1) Ports in the cabling cavity RTN(+) Power supply socket NEG(-) CPRI0 Optical/electrical port 0, connected to the BBU CPRI1 Optical/electrical port 1, reserved (2) Ports at the bottom ANT_TX/RXA TX/RX port A, supporting RET signal transmission ANT_RXC RX port C
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 6 Item Silkscreen Remarks ANT_RXD Port RX port D ANT_TX/RXB TX/RX port B EXT_ALM Alarm monitoring port used for monitoring one RS485 signal and two dry contact signals RET Communication port for the RET antenna, supporting RET signal transmission (3) Indicators RUN See 2.5 RU Indicators. ALM ACT VSWR CPRI0 CPRI1 The port for transmitting RET signals is determined by the software. Table 2-2 describes how to use RF ports. Table 2-2 Usage of RF ports Product Version TX/RX Channel Number of Used RF Ports Usage Remarks DBS3900 LTE V100R003C00 and later versions 1 x 2T4R 4 ANT_TX/RXA, ANT_TX/RXB, ANT_RXC, and ANT_RXD are used together for one sector, with ANT_TX/RXA and ANT_RXC combined and ANT_TX/RXB and ANT_RXD combined. A single sector Figure 2-5 shows the recommended usage of the RF ports on an RU used for DBS3900 LTE V100R003C00 and later versions.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 7 Figure 2-5 Recommended usage of the RF ports on an RU used for DBS3900 LTE V100R003C00 and later versions 2.5 RU Indicators This section describes six indicators on an RU. They indicate the running status. For detailed positions of RU indicators, see 2.4 RU Ports. Table 2-3 describes RU indicators. Table 2-3 RU indicators Indicator Color Status Meaning RUN Green Steady on There is power supply, but the module is faulty. Steady off There is no power supply, or the module is faulty. Blinking (on for 1s and off for 1s) The board is functioning 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 Steady 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, you need to locate the fault before deciding whether to replace the module.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 8 Indicator Color Status Meaning Steady off No alarm is generated. ACT Green Steady on The module is running properly with TX channels enabled or the software is being loaded without RU running. Blinking (on for 1s and off for 1s) The module is running properly with TX channels disabled. VSWR Red Steady off No Voltage Standing Wave Ratio (VSWR) alarm is generated. Blinking (on for 1s and off for 1s) VSWR alarms are generated on the ANT_TX/RXB port. Steady on VSWR alarms are generated on the ANT_TX/RXA port. 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 Red or green Steady green The CPRI link is functioning properly. 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 a failure in clock lock between two modes or mismatched data rates over CPRI ports. Steady off The optical module cannot be detected, or the optical module is powered off. CPRI1 Red or green Steady green The CPRI link is functioning properly. 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 a failure in clock lock between two modes or mismatched data rates over CPRI ports. Steady off The optical module cannot be detected, or the optical module is powered off. 2.6 Optical Modules An optical module transmits optical signals between an optical port and a fiber optic cable.
RRU3260 Hardware Description 2 RU Introduction Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 9 The exteriors of an optical module and the label on an optical module in this section are for reference only. The actual exteriors may be different. Exterior The following figure shows the exterior of an optical module. Figure 2-6 Exterior of an optical module Label on an optical module There is a label on each optical module, which provides information such as the rate, wavelength, and transmission mode, as shown in the following figure. Figure 2-7 Label on an optical module (1) Rate (2) Wavelength (3) Transmission mode Optical Module Type Optical modules can be divided into single- and multimode optical modules, which can be distinguished as follows:  The puller of a single-mode optical module is blue and the puller of a multimode optical module is black or gray.  The transmission mode is displayed as "SM" on the label of a single-mode optical module and "MM" on the label of a multimode optical module.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 10 3 RU Cables About This Chapter This chapter describes RU cables. 3.1 RU Cable List This section describes RU cable connections. 3.2 RU PGND Cable An RU PGND cable connects an RU and a ground bar, ensuring the proper grounding of the RU. The maximum length of an RU PGND cable is 8 m (26.25 ft). 3.3 RU Power Cable The RU power cable is a -48 V DC shielded cable. It feeds -48 V DC power to an RU. The length of power supply that an RU power cable supports is 100 m (328.08 ft) by default. 3.4 RU Alarm Cable The RU alarm cable, a shielded straight-through cable, transmits alarm signals from an external device to an RU so that the base station monitors the operating status of external devices. The RU alarm cable is 5 m (16.4 ft). 3.5 CPRI Fiber Optic Cable CPRI fiber optic cables are classified into multimode fiber optic cables and single-mode fiber optic cables. They transmit CPRI signals. 3.6 RU RF Jumper The 1/2" RU RF jumper transmits and receives RF signals between an RU and an antenna. A fixed-length RF jumper used by an RU is 2 m (6.56 ft), 3 m (9.84 ft), 4 m (13.12 ft), 6 m (19.68 ft), or 10 m (32.81 ft). A variable-length RF jumper used by an RU has a maximum length of 10 m (32.81 ft). 3.7 RU AISG Multi-Wire Cable An RU AISG multi-wire cable connects an RU and an RCU to transmit control signals from a base station to an RET antenna. When the RU is connected to the RET antenna, an AISG multi-wire cable transmits RS485 signals. The length of the AISG multi-wire cable is 5 m (16.40 ft). 3.8 RU AISG Extension Cable
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 11 When the distance between an RU and an RCU is longer than 5 m (16.4 ft), an AISG multi-wire cable is not long enough to connect the RU and the RCU. In this case, an AISG extension cable is used to extend the AISG multi-wire cable for transmitting RS485 signals. The length of the AISG extension cable is 15 m (49.21 ft). 3.1 RU Cable List This section describes RU cable connections. Table 3-1 lists RU cables. Table 3-1 RU cables Cable One End The Other End Connector Installation Position Connector Installation Position 3.2 RU PGND Cable OT terminal (M6, 16 mm2 or 0.025 in.2) Ground terminal on the RU OT terminal (M8, 16 mm2 or 0.025 in.2) Ground terminal on the ground bar 3.3 RU Power Cable Tool-less female connector (pressfit type) NEG(-) and RTN(+) ports on the RU Depending on the power supply equipment External power equipment 3.4 RU Alarm Cable DB15 waterproof male connector EXT_ALM port on the RU Cord end terminal External alarm device 3.5 CPRI Fiber Optic Cable DLC connector CPRI0 port on the RU DLC connector CPRI port on a board in the BBU 3.6 RU RF Jumper DIN male connector ANT_TX/RXA, ANT_TX/RXB, ANT_RXC, or ANT_RXD port on the RU DIN male connector Antenna system 3.7 RU AISG Multi-Wire Cable DB9 waterproof male connector RET port on the RU Standard AISG female connector Standard AISG male connector on the RCU or on the AISG extension cable 3.8 RU 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
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 12 3.2 RU PGND Cable An RU PGND cable connects an RU and a ground bar, ensuring the proper grounding of the RU. The maximum length of an RU PGND cable is 8 m (26.25 ft). Exterior A PGND cable is green or green and yellow with a cross-sectional area of 16 mm2 (0.025 in.2). An OT terminal is installed at each end of the cable. Figure 3-1 shows a PGND cable. Figure 3-1 PGND cable (1) OT terminal (M6, 16 mm2 or 0.025 in.2) (2) OT terminal (M8, 16 mm2 or 0.025 in.2)  If the customer prepares the PGND cable, a copper-core cable with a cross-sectional area of 16 mm2 (0.025 in.2) or larger is recommended.  One OT terminal must be added to each end of the PGND cable onsite.  You can determine the color of the cable and whether to use corresponding two-hole OT terminals based on local regulations. Figure 3-2 shows a two-hole OT terminal. Figure 3-2 Two-hole OT terminal 3.3 RU Power Cable The RU power cable is a -48 V DC shielded cable. It feeds -48 V DC power to an RU. The length of power supply that an RU power cable supports is 100 m (328.08 ft) by default.  The maximum length of power supply that an RU power cable supports is 150 m (492.12 ft). Contact Huawei engineers when an RU power cable greater than 50 m (164.04 ft) is required.  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.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 13 Exterior There are three types of RU power cables in terms of cross-sectional areas: 3.3 mm2 (0.005 in.2) (12 AWG) and 5.3 mm2 (0.008 in.2) (10 AWG) complying with North American standards and 4 mm2 (0.006 in.2) complying with European standards. A tool-less female connector (pressfit type) needs to be added to one end of the RU power cable and a corresponding terminal needs to be added to the other end based on the requirements of the connector on the external power device, as shown in Figure 3-3. Figure 3-3 RU power cable (1) -48 V DC power cable (2) Shield layer (3) Tool-less female connector (pressfit type) Table 3-2 lists the specifications of an RU power cable. Table 3-2 Specifications of an RU power cable Cable Wire Wire Color in Most Regions Wire Color in Other Regions North American Standard European Standard UK RU power cable RTN(+) Black Brown Blue NEG(-) Blue Blue Gray 3.4 RU Alarm Cable The RU alarm cable, a shielded straight-through cable, transmits alarm signals from an external device to an RU so that the base station monitors the operating status of external devices. The RU alarm cable is 5 m (16.4 ft). Exterior An alarm cable has a DB15 waterproof male connector at one end and eight cord end terminals at the other end, as shown in Figure 3-4.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 14 Figure 3-4 Alarm cable (1) DB15 waterproof male connector (2) Cord end terminal Pin Assignment Table 3-3 describes the pin assignment for the wires of an RU alarm cable. Table 3-3 Pin assignment for the wires of an RU alarm cable RU Alarm Port Pin of the Waterproofed DB15 Male Connector Color Type Cord End Terminal Description Dry contact X1.2 White and blue Twisted pair X2 SWITCH_INPUT0+ X1.3 Blue X3 SWITCH_INPUT0- (GND) X1.6 White and orange Twisted pair X4 SWITCH_INPUT1+ X1.7 Orange X5 SWITCH_INPUT1- (GND) RS485 X1.10 White and green Twisted pair X6 APM RX- X1.11 Green X7 APM RX+ X1.13 White and brown Twisted pair X8 APM TX- X1.14 Brown X9 APM TX+
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 15 3.5 CPRI Fiber Optic Cable CPRI fiber optic cables are classified into multimode fiber optic cables and single-mode fiber optic cables. They transmit CPRI signals. Multimode fiber optic cables connect the BBU and RU or interconnect two RUs. The maximum length of the multimode fiber optic cable between the BBU and RU is 150 m (492.12 ft) and the multimode fiber optic cable between two RUs has a fixed length of 10 m (32.81 ft). A single-mode fiber optic cable consists of the single-mode pigtail and trunk single-mode fiber optic cable, and the single-mode pigtail and trunk single-mode fiber optic cable are interconnected using the ODF. The maximum length of the single-mode pigtail is 20 m (65.62 ft) on BBU side and 70 m (229.66 ft) on RU side.  The ODF and trunk single-mode fiber optic cable are provided by the customer and must comply with the ITU-T G.652 standard.  The ODF is an outdoor transfer box for fiber optic cables, which interconnects the single-mode pigtail and trunk single-mode fiber optic cable.  A multimode fiber optic cable and a single-mode fiber optic cable are connected to a multimode optical module and a single-mode optical module, respectively. Exterior Multimode fiber optic cable: The multimode fiber optic cable has a DLC connector at each end, as shown in Figure 3-5. Figure 3-5 Multimode fiber optic cable (1) DLC connector (2) Breakout cable (3) Label on the breakout cable  When a multimode fiber optic cable connects a BBU and an RU, the breakout cable on the BBU side is 0.34 m (1.12 ft) and the breakout cable on the RU side is 0.03 m (0.098 ft).  When a multimode fiber optic cable connects two RUs, the breakout cable on both sides is 0.03 m (0.098 ft). Figure 3-6 shows the connection of the multimode fiber optic cable between a BBU and an RU.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 16 Figure 3-6 Connection of the multimode fiber optic cable between a BBU and an RU (1) Multimode fiber optic cable between a BBU and an RU Single-mode pigtail: The single-mode pigtail has a DLC connector at one end and an FC, LC, or SC connector at the other end, as shown in Figure 3-7. Figure 3-7 Single-mode pigtail (1) DLC connector (2) Breakout cable (3) Label on the breakout cable (4) FC connector (5) LC connector (6) SC connector  When a single-mode pigtail connects a BBU and an ODF, the breakout cables on the BBU side and ODF side are 0.34 m (1.12 ft) and 0.8 m (2.62 ft), respectively.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 17  When a single-mode pigtail connects an RU and an ODF, the breakout cables on the RU side and ODF side are 0.03 m (0.098 ft) and 0.8 m (2.62 ft), respectively. Figure 3-8 shows the connection of the single-mode pigtail. Figure 3-8 Connection of the single-mode pigtail (1) Single-mode pigtail between a BBU and an ODF (2) Single-mode pigtail between an RU and an ODF Selection Principles The following table describes the principles for selecting CPRI fiber optic cables. Table 3-4 Principles for selecting CPRI fiber optic cables Remote Distance Selection Principle Remarks Less than or equal to 100 m (328.08 ft) Multimode fiber optic cable Connects the BBU and RU When it connects two RUs, the distance between the two RUs must be equal to or less than 10 m (32.81 ft). Greater than 100 m (328.08 ft) and equal to or less than 150 m (492.12 ft) Multimode fiber optic cable Connects the BBU and RU Recommended: single-mode fiber optic cable (single-mode pigtail and trunk single-mode fiber optic cable) The single-mode pigtail at the RU or BBU side is connected to the trunk single-mode fiber optic cable using the ODF. Greater than 150 m (492.12 ft) Single-mode fiber optic cable (single-mode pigtail and trunk single-mode fiber optic cable)
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 18 Pin Assignment Table 3-5 describes the labels on and recommended connections for the breakout cables of a CPRI fiber optic cable. Table 3-5 Labels on and recommended connections for the breakout cables of a CPRI fiber optic cable Label Installation Position Multimode Fiber Optic Cable Between a BBU and an RU Multimode Fiber Optic Cable Between Two RUs Single-Mode Pigtail 1A CPRI RX port on the RU CPRI RX port on RU 1 RX port on the BBU or CPRI RX port on the RU 1B CPRI TX port on the RU CPRI TX port on RU 1 TX port on the BBU or CPRI TX port on the RU 2A TX port on the BBU CPRI TX port on RU 0 ODF 2B RX port on the BBU CPRI RX port on RU 0 ODF 3.6 RU RF Jumper The 1/2" RU RF jumper transmits and receives RF signals between an RU and an antenna. A fixed-length RF jumper used by an RU is 2 m (6.56 ft), 3 m (9.84 ft), 4 m (13.12 ft), 6 m (19.68 ft), or 10 m (32.81 ft). A variable-length RF jumper used by an RU has a maximum length of 10 m (32.81 ft).  When the distance between an RU and an antenna is less than 10 m (32.81 ft), one end of the RF jumper is connected to the ANT-TX/RXA or ANT-TX/RXB port at the bottom of the RU, and the other end is connected to the antenna.  When the distance between an RU and an antenna is greater than 10 m (32.81 ft), one end of the RF jumper is connected to a feeder, and the other end is connected to the antenna.  If the customer prepares the RF jumper, the length of the RF jumper should be as short as possible and not exceed 2 m (6.56 ft.). Exterior An RF jumper has a DIN male connector at one end and a customized connector at the other end. Figure 3-9 shows an RF jumper with a DIN male connector at each end.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 19 Figure 3-9 RF jumper (1) DIN male connector 3.7 RU AISG Multi-Wire Cable An RU AISG multi-wire cable connects an RU and an RCU to transmit control signals from a base station to an RET antenna. When the RU is connected to the RET antenna, an AISG multi-wire cable transmits RS485 signals. The length of the AISG multi-wire cable is 5 m (16.40 ft). An RCU is a driving motor used for the phase shifter in the RET antenna. It receives control commands from a base station and runs the commands to drive the stepper motor. Using a gear, the stepper motor drives the adjustable phase shifter in the antenna and changes the downtilt angle. Exterior An AISG multi-wire cable has a waterproofed DB9 male connector at one end and a standard AISG female connector at the other end, as shown in Figure 3-10. Figure 3-10 AISG multi-wire cable (1) Waterproofed DB9 male connector (2) Standard AISG female connector Pin Assignment Table 3-6 describes the pin assignment for the wires of an AISG multi-wire cable.
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 20 Table 3-6 Pin assignment for the wires of an AISG multi-wire cable X1 End (Pin of the Waterproofed DB9 Male Connector) X2 End (Pin of the Standard AISG Female Connector) Color Type Description X1.1 X2.1 White and blue Twisted pair +12 V Blue X1.3 X2.3 White and orange Twisted pair RS485 B X1.5 X2.5 Orange RS485 A X1.4 X2.4 White and green - GND X1.9 and X1.4 are interconnected. - - - GND - X2.1 and X2.6 are interconnected. - - +12 V - X2.4 and X2.7 are interconnected. - - GND 3.8 RU AISG Extension Cable When the distance between an RU and an RCU is longer than 5 m (16.4 ft), an AISG multi-wire cable is not long enough to connect the RU and the RCU. In this case, an AISG extension cable is used to extend the AISG multi-wire cable for transmitting RS485 signals. The length of the AISG extension cable is 15 m (49.21 ft). Exterior An AISG multi-wire cable has a standard AISG male connector at one end and a standard AISG female connector at the other end, as shown in Figure 3-11. Figure 3-11 AISG extension cable (1) Standard AISG male connector (2) Standard AISG female connector
RRU3260 Hardware Description 3 RU Cables Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 21 Pin Assignment Table 3-7 describes the pin assignment for the wires of an AISG extension cable. Table 3-7 Pin assignment for the wires of an AISG extension cable X1 End (Pin of the Standard AISG Male Connector) X2 End (Pin of the Standard AISG Female Connector) Color Type Description X1.1 X2.1 White and blue Twisted pair +12 V Blue X1.7 X2.7 White and orange Twisted pair DC Return Orange X1.3 X2.3 White and green Twisted pair RS485 B X1.5 X2.5 Green RS485 A X1.6 X2.6 White and brown Twisted pair +24 V Brown
RRU3260 Hardware Description 4 RF Cable Connections for the RU3260 Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 22 4 RF Cable Connections for the RU3260 RF cable connections for the RU vary depending on the configurations of the RU and antenna. Description of RF Cable Connections This section describes the RF cable connections for the RU serving a single sector. The following table lists the RF cable connections for the RU. Table 4-1 RF cable connections for the RU RU Model Specifications of a Single RU Scenario Illustration of Cable Connections RU3260 For details, see section "Typical Power Configuration for RU Modules" in chapter "Configuration Reference" in 3900 Series Base Station Initial Configuration Guide. 2T4R See Figure 4-1.
RRU3260 Hardware Description 4 RF Cable Connections for the RU3260 Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 23 Illustration of Cable Connections Figure 4-1 RF cable connections for the RU
RRU3260 Hardware Description 5 RU Auxiliary Devices Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 24 5 RU Auxiliary Devices About This Chapter This chapter describes RU auxiliary devices. 5.1 IFS06 An Indoor Floor installation Support (IFS06) is used for installing indoor RUs. 5.2 OCB An Outdoor Cable Conversion Box (OCB) interconnects cables of different core diameters. Power cables shipped with RUs cannot support long-distance power supply. Therefore, when power supply is far from the equipment, cables with large core diameters are used, and an OCB connects these cables and RU power cables. 5.1 IFS06 An Indoor Floor installation Support (IFS06) is used for installing indoor RUs. Exterior Figure 5-1 shows an IFS06.
RRU3260 Hardware Description 5 RU Auxiliary Devices Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 25 Figure 5-1 IFS06 (1) Cable tray (2) Ground bar 2 (3) Rear foot (4) Front foot (5) Adjustable beam (6) Ground bar 1 (7) Main frame - Function  It can be installed on the ground.  The upper and lower adjustable beams on an IFS06 can be moved up and down to fit for heights of RUs.  RUs can be installed on an IFS06 only when the ambient temperature is higher than or equal to the lowest working temperature of the RU and at least 5°C (41°F) lower than the highest working temperature of the RU. In this scenario, the IFS06 supports at least three RUs. When the ambient temperature is higher than or equal to the lowest working temperature of the RU and at least 10°C (50°F) lower than the highest working temperature of the RU, the IFS06 supports a maximum of six RUs. For details about the operating temperature of the RU, see section "Technical Specifications of RUs" in 3900 Series Base Station Technical Description. Specifications Table 5-1 describes IFS06 specifications. Table 5-1 IFS06 specifications Item Specification
RRU3260 Hardware Description 5 RU Auxiliary Devices Issue 03 (2014-01-20) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd. 26 Item Specification Dimensions (H x W x D) 1730 mm (79 in.) x 600 mm (23.62 in.) x 600 mm (23.62 in.) Weight 45 kg (99.23 lb) 5.2 OCB An Outdoor Cable Conversion Box (OCB) interconnects cables of different core diameters. Power cables shipped with RUs cannot support long-distance power supply. Therefore, when power supply is far from the equipment, cables with large core diameters are used, and an OCB connects these cables and RU power cables. Application Scenario of an OCB Figure 5-2 shows the application scenario of an OCB. Figure 5-2 Application scenario of an OCB For details about the structure, functions, installation, and maintenance of an OCB, see the OCB User Guide or OCB–01M User Guide.

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