RRU3942&RRU3642
Installation Guide
Issue 07
Date 2013-12-30
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2013. 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
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i
About This Document Purpose
This document describes the process of installing DC RRU3942 and RRU3642 (referred to as
RRU in this document).
Product Version
The following table lists the product version related to this document for RRU3942.
Product Name Product Version
DBS3900 V100R004C00 and later versions
DBS3900 GSM V100R013C00 and later versions
DBS3900 WCDMA V200R013C00 and later versions
DBS3900 LTE V100R005C00 and later versions
The following table lists the product version related to this document for RRU3642.
Product Name Product Version
DBS3900 V100R008C00 and later versions
DBS3900 LTE V100R006C00 and later versions
Intended Audience
This document is intended for:
Base station installation engineers
Organization
1 Changes in the RRU3942&RRU3642 Installation Guide
RRU3942&RRU3642
Installation Guide
About This Document
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
ii
This chapter describes the changes in the RRU3942&RRU3642 Installation Guide.
2 Installation Preparations
This chapter describes the reference documents, tools, and instruments that must be ready before
the installation. In addition, it specifies the skills and prerequisites that installation engineers
must have.
3 Information About the Installation
Before installing an RRU, you must be familiar with its exterior, ports, indicators, installation
options and installation clearance requirements.
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 Hoisting an RRU and Related Cables onto a Tower
This section describes the procedure for hoisting an RRU and related cables onto a tower and
the precautions that must be taken.
7 Installing the RRU
This chapter describes the procedure for installing the RRU. The procedure for installing the
RRU varies depending on installation options.
8 Installing RRU Cables
This chapter describes the procedure for installing RRU cables.
9 Checking the RRU Hardware Installation
After an RRU is installed, check the hardware installation.
10 Powering On an RRU
After all the devices are installed, check the power-on status of an RRU.
11 Appendix
This section describes the procedure for adding an easy power receptacle (pressfit type)
connector.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
RRU3942&RRU3642
Installation Guide
About This Document
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iii
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
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.
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
Examples of information displayed on the screen are in
Courier New.
Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italics.
RRU3942&RRU3642
Installation Guide About This Document
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iv
Convention Description
[ ] Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... } Optional items are grouped in braces and separated by
vertical bars. One item is selected.
[ x | y | ... ] Optional items are grouped in brackets and separated by
vertical bars. One item is selected or no item is selected.
{ x | y | ... }
*
Optional items are grouped in braces and separated by
vertical bars. A minimum of one item or a maximum of all
items can be selected.
[ x | y | ... ]
*
Optional items are grouped in brackets and separated by
vertical bars. Several items or no item can be selected.
GUI Conventions
The GUI conventions that may be found in this 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.
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 Operations
The mouse operations that may be found in this document are defined as follows.
RRU3942&RRU3642
Installation Guide
About This Document
Issue 07 (2013-12-30) 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.
RRU3942&RRU3642
Installation Guide About This Document
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
vi
Contents About This Document.....................................................................................................................ii
1 Changes in the RRU3942&RRU3642 Installation Guide.......................................................1
2 Installation Preparations..............................................................................................................5
2.1 Reference Documents.....................................................................................................................................................6
2.2 Tools and Instruments....................................................................................................................................................6
2.3 Skills and Requirements for Onsite Personnel...............................................................................................................8
3 Information About the Installation...........................................................................................9
3.1 RRU Exterior................................................................................................................................................................ 10
3.2 RRU Ports..................................................................................................................................................................... 10
3.3 RRU Indicators............................................................................................................................................................. 18
3.4 Installation Scenarios.................................................................................................................................................... 20
3.5 Installation Clearance Requirements of an RRU.......................................................................................................... 28
3.5.1 Clearance for a Single RRU...................................................................................................................................... 28
3.5.2 Clearances for Three or More RRUs......................................................................................................................... 30
3.5.3 Installation Spacing Between RRUs..........................................................................................................................34
4 Unpacking the Equipment.........................................................................................................37
5 Installation Process.....................................................................................................................39
6 Hoisting an RRU and Related Cables onto a Tower............................................................40
6.1 Hoisting an RRU onto a Tower.................................................................................................................................... 41
6.2 Hoisting Fiber Optic Cables onto a Tower................................................................................................................... 45
6.3 Hoisting Power Cables onto a Tower........................................................................................................................... 47
7 Installing the RRU.......................................................................................................................50
7.1 Mounting Kits for an RRU........................................................................................................................................... 51
7.2 Installing the RRU on a Pole........................................................................................................................................ 51
7.2.1 Installing a Single RRU............................................................................................................................................. 52
7.2.2 Installing Two RRUs................................................................................................................................................. 55
7.2.3 Installing Three or More RRUs................................................................................................................................. 60
7.3 Installing the RRU on U-steel...................................................................................................................................... 64
7.4 Installing the RRU on Angle Steel............................................................................................................................... 68
7.5 Installing the RRU on a Wall....................................................................................................................................... 72
RRU3942&RRU3642
Installation Guide
Contents
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
vii
7.6 Installing an RRU on an IFS06.....................................................................................................................................76
8 Installing RRU Cables................................................................................................................82
8.1 Cabling Requirements.................................................................................................................................................. 84
8.2 Cable Connections........................................................................................................................................................ 90
8.3 Installation Process....................................................................................................................................................... 94
8.4 RRU Cable List............................................................................................................................................................ 95
8.5 Installing an RRU PGND Cable................................................................................................................................... 97
8.6 Installing an RRU RF Jumper...................................................................................................................................... 98
8.7 Installing an Inter-RRU RF Cable.............................................................................................................................. 102
8.8 Installing an RRU AISG Multi-Wire Cable and AISG Extension Cable................................................................... 103
8.9 Opening the Cover Plate of an RRU Cabling Cavity................................................................................................. 105
8.10 Installing an RRU Power Cable................................................................................................................................107
8.11 Installing a CPRI Fiber Optic Cable......................................................................................................................... 109
8.12 Installing an RRU Alarm Cable................................................................................................................................111
8.13 Closing the Cover Plate of an RRU Cabling Cavity................................................................................................ 111
9 Checking the RRU Hardware Installation............................................................................114
10 Powering On an RRU............................................................................................................. 115
11 Appendix...................................................................................................................................117
11.1 Adding a Tool-Less Female Connector (Pressfit Type) to the RRU Power Cable on the RRU Side...................... 118
RRU3942&RRU3642
Installation Guide Contents
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
viii
1 Changes in the RRU3942&RRU3642
Installation Guide
This chapter describes the changes in the RRU3942&RRU3642 Installation Guide.
07 (2013-12-30)
This is the seventh official release.
Compared with issue 06 (2013-12-23), this issue includes the following change:
Topic Change Description
3.4 Installation Scenarios Modified the figure showing the U-steel
specifications.
Compared with issue 06 (2013-12-23), this issue does not include any new information and no
information is deleted from this issue.
06 (2013-12-23)
This is the sixth official release.
Compared with issue 05 (2013-06-26), this issue includes the following change:
Topic Change Description
6.1 Hoisting an RRU onto a Tower Optimized the procedure for hoisting an RRU
onto a Tower.
Compared with issue 05 (2013-06-26), this issue does not include any new information and no
information is deleted from this issue.
RRU3942&RRU3642
Installation Guide
1 Changes in the RRU3942&RRU3642 Installation Guide Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1
05 (2013-06-26)
This is the fifth official release.
Compared with issue 04 (2013-04-28), this issue includes the following change:
Topic Change Description
8.10 Installing an RRU Power Cable Added the power device DCDU-12B for the
RRU.
Compared with issue 04 (2013-04-28), this issue does not include any new information and no
information is deleted from this issue.
04 (2013-04-28)
This is the fourth official release.
Compared with issue 03 (2013-01-14), this issue includes the following new information:
l 7.6 Installing an RRU on an IFS06
Compared with issue 03 (2013-01-14), this issue includes the following change:
Topic Change Description
The whole document Modified the figures showing the mounting kits for
an RRU, which have been modified.
About This Document Changed the document name from RRU3942
Installation Guide to RRU3942&RRU3642
Installation Guide.
2.2 Tools and Instruments Modified the specifications of the hammer drill and
wrench.
3.4 Installation Scenarios Modified the installation scenarios of the RRU.
4 Unpacking the Equipment Added requirements for checking the insulation layer
of RRU cables.
7 Installing the RRU Changed the procedures for installing the RRU in
different scenarios because RRU mounting kits and
attachment plates are redesigned.
8.1 Cabling Requirements Added requirements for routes of RRU cables.
Compared with issue 03 (2013-01-14), no information is deleted from this issue.
03 (2013-01-14)
This is the third official release.
RRU3942&RRU3642
Installation Guide
1 Changes in the RRU3942&RRU3642 Installation Guide
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2
Compared with issue 02 (2012-09-15), this issue does not include any new information.
Compared with issue 02 (2012-09-15), this issue includes the following change:
Topic Change Description
8.10 Installing an RRU Power Cable Added the attention for installing the RRU
power cable.
Compared with issue 02 (2012-09-15), no information is deleted from this issue.
02 (2012-09-15)
This is the second official release.
Compared with issue 01 (2012-04-25), this issue does not include any new information.
Compared with issue 01 (2012-04-25), this issue includes the following change:
Topic Change Description
8.6 Installing an RRU RF Jumper Optimized the procedure for waterproofing
the connectors on an RRU RF jumper and the
dustproof caps.
6.2 Hoisting Fiber Optic Cables onto a
Tower
Optimized the procedure for hoisting.
6.3 Hoisting Power Cables onto a Tower
Compared with issue 01 (2012-04-25), no information is deleted from this issue.
01 (2012-04-25)
This is the first official release.
Compared with draft B (2012-04-16), this issue does not include any modification.
Draft B (2012-04-16)
This is the draft.
Compared with issue draft A (2012-01-10), this issue does not include any new information.
Compared with issue draft A (2012-01-10), this issue includes the following change:
Topic Change Description
3.4 Installation Scenarios Optimized the contents in this document.
Compared with issue draft A (2012-01-10), no information is deleted from this issue.
RRU3942&RRU3642
Installation Guide
1 Changes in the RRU3942&RRU3642 Installation Guide
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3
Draft A (2012-01-10)
This is a draft.
RRU3942&RRU3642
Installation Guide 1 Changes in the RRU3942&RRU3642 Installation Guide
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4
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.
2.2 Tools and Instruments
You must prepare the following tools and instruments before the installation.
2.3 Skills and Requirements for Onsite Personnel
Onsite personnel must be qualified and trained. Before performing any operation, onsite
personnel must be familiar with correct operation methods and safety precautions.
RRU3942&RRU3642
Installation Guide 2 Installation Preparations
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5
2.1 Reference Documents Before the installation, you must be familiar with reference documents.
The following reference documents are required during RRU installation:
l RRU3942&RRU3642 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.
Hammer drill (a φ12 bit)
ESD gloves Vacuum cleaner
Heat gun Phillips screwdriver (M3 to
M6)
Flat-head screwdriver (M3 to
M6)
Rubber mallet COAX crimping tool Wire stripper
RRU3942&RRU3642
Installation Guide 2 Installation Preparations
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
Utility knife Cable cutter
Adjustable wrench (size ≥ 32
mm [1.26 in.])
Torque wrench
Size: 16 mm (0.63 in.) and 32
mm (1.26 in.)
Combination wrench
Size: 16 mm (0.63 in.) and 32
mm (1.26 in.)
Level
Torque screwdriver
5 mm
5 mm
(M3 to M6)
(M3 to M6)
Torque socket
Multimeter
Marker (diameter ≤ 10 mm
[0.39 in.])
Measuring tape
Inner hexagon wrench Fixed pulley Lifting sling
Hydraulic pliers - -
RRU3942&RRU3642
Installation Guide
2 Installation Preparations
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7
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.
l The number of onsite personnel depends on the engineering schedule and installation
environment. Generally, only three to five onsite personnel are necessary.
RRU3942&RRU3642
Installation Guide 2 Installation Preparations
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8
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.
3.3 RRU Indicators
This section describes six indicators on an RRU. They indicate the running status.
3.4 Installation Scenarios
An RRU can be installed on a pole, U-steel, angle steel, wall, or IFS06. Installation scenarios
must meet heat-dissipation and waterproofing requirements of the RRU.
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.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
9
3.1 RRU Exterior This section describes the exterior and dimensions of an RRU.
Figure 3-1 shows an RRU.
Figure 3-1 RRU exterior
Figure 3-2 shows RRU dimensions.
Figure 3-2 RRU dimensions
3.2 RRU Ports This section describes ports on the RRU panels. An RRU has a bottom panel, cabling cavity
panel, and indicator panel.
RRU3942&RRU3642
Installation Guide
3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
Figure 3-3 shows the ports on the RRU panels.
Figure 3-3 Ports on the RRU panels
Table 3-1 describes ports and indicators on the RRU panels.
Table 3-1 Ports and indicators on the RRU panels
Item Silkscreen Description
(1) Ports at the bottom ANT_TX/RXA TX/RX port A, supporting RET signal
transmission
ANT_RXC RX port C
ANT_RXD Port RX port D
ANT_TX/RXB TX/RX port B
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
Item Silkscreen Description
RX_IN/OUT Interconnection port
RET Communication port for the RET antenna,
supporting RET signal transmission
(2) Ports in the cabling
cavity
RTN(+) Power supply socket
NEG(-)
CPRI0 Optical/electrical port 0
CPRI1 Optical/electrical port 1
EXT_ALM Alarm monitoring port used for monitoring
one RS485 signal and two dry contact signals
(3) Indicators RUN See 3.3 RRU Indicators .
ALM
ACT
VSWR
CPRI0/IR0
CPRI1/IR1
NOTE
l The port for transmitting RET signals is determined by the software.
l For the RRU3942, both CPRI0 and CPRI1 can be conected to the BBU. Use the CPRI0 by default in
the single-mode scenario.
l For the RRU3642, CPRI0 is connected to the BBU and the CPRI1 is reserved. The RX_IN/OUT is not
used.
Table 3-2 describes how to use RF ports for RRU3942.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
12
Table 3-2 Usage of RF ports for RRU3942
Product Version TX/RX
Channe
l
Number
of Used
RF Ports
Usage Remarks
l DBS3900
V100R004C00
l DBS3900 GSM
V100R013C00
l DBS3900 GSM
V300R013C00
l DBS3900
WCDMA
V200R013C00
1 x 2T2R 2 ANT_TX/RXA and
ANT_TX/RXB are used
together.
A single
sector
l DBS3900 GSM
V100R014C00
and later versions
l DBS3900 GSM
V300R014C00
and later versions
1 x 1T2R 2 It is recommended that
ANT_TX/RXA and
ANT_RXC be used
together.
You can also use ANT_TX/
RXB and ANT_RXD
together.
A single
sector
1 x 2T2R 2 ANT_TX/RXA and
ANT_TX/RXB are used
together.
A single
sector
2 x 1T2R 4 ANT_TX/RXA and
ANT_RXC are used for one
sector; ANT_TX/RXB and
ANT_RXD are used for the
other sector.
Two sectors
l DBS3900
V100R007C00
and later versions
l DBS3900
WCDMA
V200R014C00
and later versions
l DBS3900 LTE
V100R005C00
and later versions
1 x 1T2R 2 It is recommended that
ANT_TX/RXA and
ANT_RXC be used
together.
You can also use ANT_TX/
RXB and ANT_RXD
together.
A single
sector
1 x 2T2R 2 ANT_TX/RXA and
ANT_TX/RXB are used
together.
A single
sector
2 x 1T2R 4 ANT_TX/RXA and
ANT_RXC are used for one
sector; ANT_TX/RXB and
ANT_RXD are used for the
other sector.
Two sectors
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
13
Product Version TX/RX
Channe
l
Number
of Used
RF Ports
Usage Remarks
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 3-4 shows the recommended usage of RF ports on an RRU3942 used for DBS3900
V100R004C00, DBS3900 GSM V100R013C00, DBS3900 GSM V300R013C00, or DBS3900
WCDMA V200R013C00.
Figure 3-4 Recommended usage of RF ports on an RRU3942 used for DBS3900 V100R004C00,
DBS3900 GSM V100R013C00, DBS3900 GSM V300R013C00, or DBS3900 WCDMA
V200R013C00
Figure 3-5 shows the recommended usage of RF ports on an RRU3942 used for DBS3900 GSM
V100R014C00 and later versions or DBS3900 GSM V300R014C00 and later versions.
RRU3942&RRU3642
Installation Guide
3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
14
Figure 3-5 Recommended usage of RF ports on an RRU3942 used for DBS3900 GSM
V100R014C00 and later versions or DBS3900 GSM V300R014C00 and later versions
Figure 3-6 shows the recommended usage of RF ports on an RRU3942 used for DBS3900
V100R007C00 and later versions, DBS3900 WCDMA V200R014C00 and later versions, or
DBS3900 LTE V100R005C00 and later versions.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
15
Figure 3-6 Recommended usage of RF ports on an RRU3942 used for DBS3900 V100R007C00
and later versions, DBS3900 WCDMA V200R014C00 and later versions, or DBS3900 LTE
V100R005C00 and later versions
Table 3-3 describes how to use RF ports for RRU3642.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
16
Table 3-3 Usage of RF ports for RRU3642
Product Version TX/RX
Channe
l
Number
of Used
RF Ports
Usage Remarks
l DBS3900 LTE
V100R006C00
and later versions
1 x 1T2R 2 It is recommended that
ANT_TX/RXA and
ANT_RXC be used
together.
You can also use ANT_TX/
RXB and ANT_RXD
together.
A single
sector
1 x 2T2R 2 ANT_TX/RXA and
ANT_TX/RXB are used
together.
A single
sector
2 x 1T2R 4 ANT_TX/RXA and
ANT_RXC are used for one
sector; ANT_TX/RXB and
ANT_RXD are used for the
other sector.
Two sectors
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 3-7 shows the recommended usage of RF ports on an RRU3642 used for DBS3900 LTE
V100R006C00 and later versions.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
17
Figure 3-7 Recommended usage of RF ports on an RRU3642 used for DBS3900 LTE
V100R006C00 and later versions
3.3 RRU Indicators This section describes six indicators on an RRU. They indicate the running status.
For detailed positions of RRU indicators, see 3.2 RRU Ports .
Table 3-4 describes RRU indicators.
Table 3-4 RRU indicators
Indicator Color Status Meaning
RUN Green Steady on There is power supply, but the module is
faulty.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
18
Indicator Color Status Meaning
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.
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 RRU 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/IR0 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.
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
19
Indicator Color Status Meaning
CPRI1/IR1 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.
3.4 Installation Scenarios An RRU can be installed on a pole, U-steel, angle steel, wall, or IFS06. Installation scenarios
must meet heat-dissipation and waterproofing requirements of the RRU.
Requirements for the Installation Scenarios
Method of installation:
l To ensure the heat dissipation of the RRU and waterproofing of the ports at the bottom of
the RRU, the vertical deviation angle of an RRU must be less than or equal to 10 degrees,
as shown in Figure 3-8 .
l On a tower, an RRU can be installed on a pole, angle steel, or U-steel. U-steel and angle
steel support the standard or reverse installation of a single RRU only.
Figure 3-8 Requirements for the vertical deviation angle of an RRU
(1) RRU
(2) Installation support (pole, U-steel, angle steel, or wall)
RRU3942&RRU3642
Installation Guide
3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
20
Installing an RRU on a Pole
Figure 3-9 shows the diameter of a pole for installing an RRU.
Figure 3-9 Diameter of a pole
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.
l Only a pole whose diameter ranges from 76 mm (2.99 in.) to 114 mm (4.49 in.) supports
more than three RRUs.
l The recommended thickness of the wall of a pole is 3.5 mm (0.14 in.) or above.
A single RRU can be installed in either side-mounted or standard mode.Figure 3-10 shows a
single RRU installed on a pole.
Figure 3-10 A single RRU installed on a pole
RRU3942&RRU3642
Installation Guide 3 Information About the Installation
Issue 07 (2013-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
21