Huawei PRU01B04 Host Manual
LampSite
Installation Guide
Issue 08
Date 2014-12-30
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.
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
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Installation Guide |
About This Document |
About This Document
Overview
This document describes how to install the modules and cables for the RHUB3908, pRRU3901 indoors. It also provides checklists for hardware installation.
Product Version
The following table lists the product version related to this document.
Product Name |
Solution Version |
Product Version |
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DBS3900 |
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SRAN9.0 and later versions |
V100R009C00 and later |
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RAN16.0 and later versions |
versions |
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eRAN7.0 and later versions |
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eRAN TDD 7.0 and later |
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versions |
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Intended Audience
This document is intended for:
BTS installation personnel
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Installation Guide |
Contents |
Contents
About This Document.................................................................................................................... |
ii |
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1 Changes in LampSite Installation Guide ................................................................................. |
1 |
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2 Installation Preparations ............................................................................................................. |
6 |
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2.1 |
Reference Documents ...................................................................................................................................... |
6 |
2.2 Preparing Tools and Instruments ...................................................................................................................... |
6 |
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2.3 |
Requirements for Installation Personnel .......................................................................................................... |
7 |
3 Unpacking and Checking ............................................................................................................ |
9 |
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4 Installing a BBU .......................................................................................................................... |
11 |
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5 Installing an RHUB3908 ............................................................................................................ |
12 |
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5.1 |
Information About the Installation ................................................................................................................. |
12 |
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5.1.1 RHUB3908 Installation Scenarios ........................................................................................................ |
12 |
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5.1.2 Installation Clearance Requirements of an RHUB3908........................................................................ |
17 |
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5.1.3 Installation Environment of an RHUB3908.......................................................................................... |
19 |
5.2 |
Installation Process......................................................................................................................................... |
21 |
5.3 |
Installing an RHUB3908 ................................................................................................................................ |
21 |
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5.3.1 Installing an RHUB3908 in a 19-Inch Cabinet or Rack........................................................................ |
21 |
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5.3.2 Installing an RHUB3908 in a 19-Inch Shelf ......................................................................................... |
24 |
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5.3.3 Installing an RHUB3908 on a Wall....................................................................................................... |
27 |
5.4 |
Installing RHUB3908 Cables ......................................................................................................................... |
31 |
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5.4.1 Requirements for Cable Layout ............................................................................................................ |
31 |
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5.4.2 RHUB3908 Cable List .......................................................................................................................... |
34 |
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5.4.3 Cable Connections ................................................................................................................................ |
35 |
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5.4.4 RHUB3908 Cable Installation Process ................................................................................................. |
35 |
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5.4.5 Installing an RHUB3908 PGND Cable................................................................................................. |
36 |
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5.4.6 Installing an Ethernet Cable .................................................................................................................. |
38 |
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5.4.7 Installing CRPI Optical Cables ............................................................................................................. |
40 |
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5.4.8 Installing an RHUB3908 Alarm Cable (Optional) ................................................................................ |
42 |
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5.4.9 Installing an RHUB3908 Power Cable ................................................................................................. |
43 |
5.5 |
Checking the RHUB3908 Hardware Installation ........................................................................................... |
44 |
5.6 Power-on Check on an RHUB3908 ............................................................................................................... |
46 |
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6 Installing a pRRU3901................................................................................................................ |
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6.1 |
Information About the Installation ................................................................................................................. |
49 |
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6.1.1 pRRU3901 Product Family................................................................................................................... |
49 |
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6.1.2 pRRU3901 Installation Scenario........................................................................................................... |
49 |
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6.1.3 Space Requirements .............................................................................................................................. |
53 |
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6.1.4 pRRU3901 Installation Environment Requirements............................................................................. |
54 |
6.2 |
Obtaining the MAC Address (Optional)......................................................................................................... |
55 |
6.3 |
Installation Process......................................................................................................................................... |
56 |
6.4 |
Installing a pRRU3901................................................................................................................................... |
57 |
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6.4.1 pRRU3901 Installation Kits.................................................................................................................. |
58 |
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6.4.2 pRRU3901 Installed on a Wall.............................................................................................................. |
59 |
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6.4.3 pRRU3901 Installed on a Ceiling ......................................................................................................... |
62 |
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6.4.4 pRRU3901 Installed on a Pole.............................................................................................................. |
66 |
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6.4.5 pRRU3901 Installed on a Plate ............................................................................................................. |
68 |
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6.4.6 pRRU3901 Installed on a Keel ............................................................................................................. |
71 |
6.5 |
Installing pRRU3901 Cables.......................................................................................................................... |
74 |
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6.5.1 Requirements for Cable Layout ............................................................................................................ |
74 |
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6.5.2 pRRU3901 Cable List ........................................................................................................................... |
76 |
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6.5.3 Cable Connections ................................................................................................................................ |
76 |
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6.5.4 Cable Connections (LTE TDD)............................................................................................................. |
79 |
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6.5.5 pRRU3901 cable installation process ................................................................................................... |
80 |
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6.5.6 Installing an Ethernet Cable .................................................................................................................. |
81 |
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6.5.7 Installing pRRU3901 Jumpers (Optional)............................................................................................. |
82 |
6.6 |
Checking the pRRU3901 Hardware Installation ............................................................................................ |
84 |
6.7 |
Powering on the pRRU3901........................................................................................................................... |
85 |
7 Installing the Extender (Optional)........................................................................................... |
87 |
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8 Appendix ...................................................................................................................................... |
90 |
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8.1 |
MAC Collection Template ............................................................................................................................. |
90 |
8.2 |
LampSite Engineering Label.......................................................................................................................... |
91 |
8.3 Attaching an L-Shaped Label ......................................................................................................................... |
94 |
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8.4 |
Installing RF Daughter Boards on a pRRU3901 (in Capacity Expansion Scenarios) .................................... |
96 |
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1 Changes in LampSite Installation Guide |
1 Changes in LampSite Installation Guide
This chapter describes the changes in the LampSite Installation Guide.
08 (2015-01-15)
This is the eighth commercial release.
Compared with 07 (2014-11-15), this issue includes the following new topics:
4 Installing a BBU
Compared with 07 (2014-11-15), this issue incorporates the following changes:
Content |
Change Description |
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Entire document |
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Changed RHUB, and pRRU to |
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RHUB3908, and pRRU3901, |
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respectively. |
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Added the pRRU3901 with three |
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transmission ports plus no PWR port (or |
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the pRRU3901 AWS+PCS+WIFI for |
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use in North America) . |
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6.7 Powering on the pRRU3901 |
Deleted the description that the pRRU3901 |
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supports AC/DC power supply. |
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Compared with 07 (2014-11-15), no information is deleted.
07 (2014-11-15)
This is the seventh commercial release.
Compared with 06 (2014-09-30), no information is added.
Compared with 06 (2014-09-30), this issue incorporates the following change:
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Content |
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Change Description |
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Space Requirements |
Added the requirements on the installation space |
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when the pRRU3901 working on the 2.6 GHz |
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band and the Wi-Fi module need to process |
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services concurrently. |
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Compared with 06 (2014-09-30), this issue excludes the following topic:
Installing RF Daughter Boards on a pRRU3901 (in Capacity Expansion Scenarios)
06 (2014-09-30)
This is the sixth commercial release.
Compared with 05 (2014-08-30), no information is added.
Compared with 05 (2014-08-30), this issue incorporates the following changes:
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Change Description |
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pRRU Installation Environment |
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Changed the operating temperature of |
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Requirements |
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pRRU3901s to a range from - 5°C to + |
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40°C. |
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Requirements for Cable Layout |
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Added the cabling requirements for Ethernet |
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cables. |
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Requirements for Cable Layout |
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Compared with 05 (2014-08-30), no information is deleted.
05 (2014-08-30)
This is the fifth commercial release.
Compared with 04 (2014-07-30), no information is added.
Compared with 04 (2014-07-30), this issue incorporates the following changes:
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Content |
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Change Description |
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Installation Clearance Requirements of an |
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Added the security precautions for the |
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RHUB |
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RHUB3908 installation environment. |
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Requirements for Cable Layout |
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Installing an Ethernet Cable |
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Added the Ethernet cable specifications and |
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requirements on flame spread rating. |
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Installing an Ethernet Cable |
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Compared with 04 (2014-07-30), no information is deleted.
04 (2014-07-30)
This is the fourth commercial release.
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Installation Guide |
1 Changes in LampSite Installation Guide |
Compared with 03 |
(2014-06-30), no information is added. |
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Compared with 03 |
(2014-06-30), this issue incorporates the following change: |
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Content |
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Change Description |
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7 Installing the Extender (Optional) |
Added the descriptions about installing a |
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Extender on a Ceiling. |
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Compared with 03 (2014-06-30), no information is deleted.
03 (2014-06-30)
This is the third commercial release.
Compared with 02 (2014-05-30), this issue includes the following new topics:
8.2 LampSite Engineering Label
8.3 Attaching an L-Shaped Label
Compared with 02 (2014-05-30), this issue incorporates the following changes:
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Content |
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Change Description |
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Cable Connections |
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Modified the description about cable |
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connections of the RHUB3908. |
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Installing RHUB Cables |
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Added the steps for attaching labels to |
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cables. |
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Installing pRRU Cables |
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Installing an Ethernet Cable |
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Added the steps for making Ethernet cables. |
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Installing an Ethernet Cable |
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Installing RF Daughter Boards on a |
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Added the descriptions about the supported |
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pRRU3901 (in Capacity Expansion |
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block type. |
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Scenarios) |
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Compared with 02 (2014-05-30), no information is deleted.
02 (2014-05-30)
This is the second commercial release.
Compared with 01 (2014-04-26), no information is added.
Compared with 01 (2014-04-26), this issue incorporates the following change:
Content |
Change Description |
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Entire document |
Added the descriptions about the LTE |
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FDD+LTE FDD mode. |
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Installation Guide |
1 Changes in LampSite Installation Guide |
Compared with 01 (2014-04-26), |
no information is deleted. |
01 (2014-04-26)
This is the first commercial release.
Compared with Draft C (2014-03-26), no information is added.
Compared with Draft C (2014-03-26), this issue incorporates the following change:
Content |
Change Description |
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Entire document |
Changed the pRRU3901 name from |
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pRRU3901 with two Ethernet ports to |
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pRRU3901 with two transmission ports, and |
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pRRU3901 with three Ethernet ports to |
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pRRU3901 with three transmission ports. |
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Compared with Draft C (2014-03-26), no information is deleted.
Draft C (2014-03-26)
This is a draft release.
Compared with Draft B (2014-02-28), no information is added.
Compared with Draft B (2014-02-28), this issue incorporates the following changes:
Content |
Change Description |
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Installing CRPI Optical Cables |
Added the description of connecting the |
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CPRI cable to the TX and RX ports of the |
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optical module crossly. |
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pRRU Installation Environment |
The operating temperature of pRRU3901 is |
Requirements |
updated. |
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Compared with Draft B (2014-02-28), no information is deleted.
Draft B (2014-02-28)
This is a draft release.
Compared with draft A (2013-11-30), this issue includes the following new topics:
Obtaining the MAC Address (Optional)
Cable Connections
MAC Collection Template
Compared with draft A (2013-11-30), this issue incorporates the following changes:
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Content |
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Change Description |
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Entire document |
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Added descriptions about pRRU3901s with |
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LampSite |
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Installation Guide |
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1 Changes in LampSite Installation Guide |
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Content |
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Change Description |
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three transmission ports. Such pRRU3901s |
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support integrated Wi-Fi services. |
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Added the descriptions about the UMTS, |
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LTE FDD and UMTS+LTE FDD mode. |
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LampSite Installation Guide |
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Optimized descriptions about matching |
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product versions. |
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Installing an Ethernet Cable |
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Changed the cable name from |
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RHUB3908-pRRU3901 Ethernet cable to |
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Installing an Ethernet Cable |
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Ethernet cable. |
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Compared with draft A (2013-11-30), this issue excludes the following topics:
Installing External Antennas (Optional)
RHUB3908 Exterior
RHUB3908 Ports and Indicators
pRRU3901 Exterior
pRRU3901 Ports and Indicators
Draft A (2013-11-30)
This is a draft release.
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Installation Guide |
2 Installation Preparations |
2 Installation Preparations
About This Chapter
Before starting the installation, you must obtain the required reference documents, tools, and instruments, and familiarize yourself with the skills required.
2.1 Reference Documents
Before the installation, you must read the following documents:
2.2 Preparing Tools and Instruments
This section describes the tools and instruments that must be prepared before the installation.
2.3 Requirements for Installation Personnel
This section describes requirements for installation engineers. They must be qualified and trained, and familiar with correct operation methods and safety precautions before performing any operations.
2.1 Reference Documents
Before the installation, you must read the following documents:
LampSite Hardware Description
Installation Reference
For details about how to install a baseband unit (BBU), see DBS3900 Installation Guide.
2.2 Preparing Tools and Instruments
This section describes the tools and instruments that must be prepared before the installation.
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Marker |
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Torque screwdriver |
Diagonal pliers |
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Level |
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(M4 to M6) |
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Installation Guide |
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2 Installation Preparations |
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Power cable crimping tool |
RJ11 crimping tool |
Cable cutter |
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Rubber mallet |
T20 torque torx screwdriver |
Wire stripper |
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Hammer drill (Ø6, Ø8 and |
Torque wrench (Ø10 mm) |
Protective gloves |
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Ø12) |
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Guarded blade utility knife |
ESD gloves |
Long measuring tape |
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Multimeter |
Network cable tester |
Vacuum cleaner |
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Ladder |
Torque wrench for SMA |
Socket wrench (M6) |
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connector |
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2.3 Requirements for Installation Personnel
This section describes requirements for installation engineers. They must be qualified and trained, and familiar with correct operation methods and safety precautions before performing any operations.
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Installation Guide |
2 Installation Preparations |
Before the installation, pay attention to the following items:
Technical engineers must take Huawei training and be familiar with proper installation and operation methods.
The number of installation personnel depends on the engineering schedule and installation environment. Generally, three to five persons are required. Generally, only three to five onsite personnel are necessary.
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Installation Guide |
3 Unpacking and Checking |
3 Unpacking and Checking
This section describes how to unpack and check the delivered equipment to ensure that the materials are complete and intact.
Context
The following lists important notes when you are transporting, lifting, or installing the equipment or components:
Protect them from colliding with doors, walls, shelves, or other objects.
Wear clean gloves and do not touch them with bare hands, sweat-soaked gloves, or dirty gloves.
You must power on the RHUB3908 or pRRU within 7 days after it is unpacked.
Procedure
1.Count the total number of the shipments.
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If... |
Then... |
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The total number of the components is |
Go to Step 2. |
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consistent with that recorded in the |
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packing lists on all packing boxes |
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The total number of the components is |
Report the problems and causes to the local |
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inconsistent with that recorded in the |
Huawei office. |
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packing lists on all packing boxes |
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Step 2 Check the exterior of each packing box. |
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Installation Guide |
3 Unpacking and Checking |
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If... |
Then... |
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The exterior of each packing box is |
Go to Step 3. |
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intact |
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It is damaged or soaked |
Report the problems and causes to the local |
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Huawei office. |
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The collision label is red |
Do not unpack the packing box and claim |
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for compensation from the transportation |
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company. |
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Step 3 Check the type and quantity of the equipment in the boxes according to the packing list. |
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If... |
Then... |
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The type and number are consistent |
Sign the Packing List with the operator. |
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with the packing list on each packing |
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list |
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There is any shortage, wrong delivery, |
Report the problems and causes to the local |
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or damaged equipment |
Huawei office. |
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Perform the following operations to protect the components from any damages and help find out the cause of any damage in future: 1. Store the unpacked equipment and packing materials indoors. 2. Take photos of the storeroom, rusted or eroded equipment, packing box, and packing materials. 3. File the photos.
----End
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Installation Guide |
4 Installing a BBU |
4 Installing a BBU
This chapter describes the process of installing a BBU.
The BBU can have BBU3900 and BBU3910. Unless otherwise specified, the BBU refers to both the BBU3900 and BBU3910 in this document.
For details about the installation of the BBU, see DBS3900 Installation Guide.
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Installation Guide |
5 Installing an RHUB3908 |
5 Installing an RHUB3908
About This Chapter
This chapter describes the process of installing an RHUB3908.
5.1 Information About the Installation
This section describes the information to be learnt before RHUB3908 installation, including the RHUB3908 installation scenarios, clearance, and installation environment.
5.2 Installation Process
The RHUB3908 installation involves installing an RHUB3908 module, installing RHUB3908 cables, checking the RHUB3908 hardware installation, and powering on the RHUB3908.
5.3 Installing an RHUB3908
An RHUB3908 can be installed in a cabinet, rack, shelf, or on a wall.
5.4 Installing RHUB3908 Cables
This section describes how to install cables for an RHUB3908.
5.5 Checking the RHUB3908 Hardware Installation
After an RHUB3908 is installed, check the installation of hardware including the devices and related cables.
5.6 Power-on Check on an RHUB3908
This section describes the power-on check on the RHUB3908 after the RHUB3908 hardware is installed and checked.
5.1 Information About the Installation
This section describes the information to be learnt before RHUB3908 installation, including the RHUB3908 installation scenarios, clearance, and installation environment.
5.1.1 RHUB3908 Installation Scenarios
An RHUB3908 can be installed in a 19-inch cabinet, rack, shelf, or on a wall.
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The RHUB3908 supports that mounting ears are installed in standard mode or reverse mode. The reverse mode is used by default. The two installation modes are defined as follows:
In standard mode, the front of the mounting ear is aligned with the RHUB3908 panel, as shown in Figure 5-1.
Figure 5-1 Installing mounting ears in standard mode
In reverse mode, the front of the mounting ear is 31 mm away from the RHUB3908 panel, as shown in Figure 5-2.
Figure 5-2 Installing mounting ears in reverse mode
Installing an RHUB3908 in a 19-Inch Cabinet or Rack
Installing an RHUB3908 in a 19-inch cabinet or rack: Secure the mounting ear to the mounting bracket by using M6 screws.
If there is no other modules installed in the 1 U space near the RHUB3908, install the RHUB3908 directly. Otherwise, remove the modules before installing the RHUB3908.
Before installation, you need to check the installation mode supported by the rack and adjust the position of the mounting ear.
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Figure 5-3 and Figure 5-4 show RHUB3908s installed in a cabinet or rack, respectively. |
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Figure 5-3 Installing an RHUB3908 in a 19-inch cabinet or rack in standard mode |
Figure 5-4 Installing an RHUB3908 in a 19-inch cabinet in reverse mode
Installing an RHUB3908 in a 19-Inch Shelf
When an RHUB3908 is installed in a 19-inch shelf, the shelf must be installed on a wall. One shelf can house multiple RHUB3908s with 1 U space between two RHUB3908s.
Figure 5-5 and Figure 5-6 show RHUB3908s installed in a 19-inch shelf.
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Figure 5-5 RHUB3908 installed in a 19-inch shelf in standard mode
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Figure 5-6 RHUB3908 installed in a 19-inch shelf in reverse mode
Installing an RHUB3908 on a Wall
An RHUB3908 can be installed on a wall.
The wall on which an RHUB3908 is installed must meet the following requirements:
When a single RHUB3908 is installed, the wall must have a capacity of bearing at least four times the weight of the RHUB3908.
Expansion bolts must be tightened to 10 N·m (88.507 bf·in.) to ensure the bolts work properly and the wall remains intact without cracks in it.
Figure 5-7 shows an RHUB3908 installed on a wall.
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Figure 5-7 RHUB3908 installed on a wall
5.1.2 Installation Clearance Requirements of an RHUB3908
When an RHUB3908 is installed in a 19-inch cabinet, rack, shelf, or on a wall, a minimum clearance is required for easy cabling and operation and maintenance. A recommended installation clearance is provided based on experience.
Do not install or place inflammable materials above or under an RHUB3908.
A clearance of 350 mm must be reserved in front of the air intake vent of the fan of the power supply unit (PSU) for maintenance.
Figure 5-8 shows the installation clearance for the RHUB3908 installed in a 19-inch cabinet, rack, or shelf.
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Figure 5-8 Installation clearance for an RHUB3908 installed in a 19-inch cabinet, rack, or shelf |
Figure 5-9 and Figure 5-10 shows the recommended and minimum installation clearance respectively when the RHUB3908 is installed on a wall.
Figure 5-9 Recommended installation clearance for a wall-mounted RHUB3908 (unit: mm)
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Figure 5-10 Minimum installation clearance for a wall-mounted RHUB3908 (unit: mm)
5.1.3 Installation Environment of an RHUB3908
The installation environment of an RHUB3908 involves the running environment specifications for the RHUB3908 and other specifications.
RHUB3908 Running Environment Specifications
Table 5-1 shows the environment specifications for the RHUB3908 installed indoors.
The temperature and humidity of the installation position must ensure normal operation. A cool and ventilated place is recommended.
The heat dissipation holes on the RHUB3908 cannot be blocked.
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Table 5-1 RHUB3908 environment specifications |
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Specifi |
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Installation |
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RHUB3908 |
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Condition |
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Remarks |
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cations |
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Scenario |
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Quantity |
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Operati |
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Installed on a |
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N/A |
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-5°C to |
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N/A |
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ng |
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wall or in a |
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+50°C |
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tempera |
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19-inch rack. |
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ture |
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Installed in a |
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1 |
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-5°C to |
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N/A |
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shelf. |
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+45°C |
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2 |
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-5°C to |
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N/A |
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+43°C |
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3 |
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-5°C to |
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N/A |
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+40°C |
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Relativ |
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Installed in all |
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N/A |
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5% RH to |
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N/A |
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e |
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scenarios. |
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95% RH |
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humidit |
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y |
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Altitude |
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N/A |
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N/A |
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-60 m to |
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Works properly. |
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+1800 m |
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1800 m to |
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Above the 1800 m altitude, |
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4000 m |
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the maximum operating |
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temperature decreases by |
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1°C each time the altitude |
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increases by 220 m. |
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Installing more than one RHUB3908, 1 U space is required between two RHUB3908s.
Other Running Environment Specifications
The RHUB3908 cannot be installed at an air outlet of the heat dissipation box of an air conditioner or other heat-generating appliances.
The RHUB3908 cannot be installed near a strong heat source.
The RHUB3908 cannot be installed in a position with water dripping, such as outdoor equipment of air conditioners, pipe, and leaking or dripping roofs.
The installation position must be far from rains. If the RHUB3908 is installed on a wall, there must be no window on either side of the wall.
The installation position must be far away from high voltage, highly corrosive devices, flammable or explosive substances, and electromagnetic interference.
The RHUB3908 must be installed in a dry, ventilating, and dust-proof place.
If the RHUB3908 is installed in parking areas or basements, the installation position must be well-ventilated.
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5.2 Installation Process
The RHUB3908 installation involves installing an RHUB3908 module, installing RHUB3908 cables, checking the RHUB3908 hardware installation, and powering on the RHUB3908.
Figure 5-11 shows the RHUB3908 installation process.
Figure 5-11 RHUB3908 installation process
5.3 Installing an RHUB3908
An RHUB3908 can be installed in a cabinet, rack, shelf, or on a wall.
5.3.1 Installing an RHUB3908 in a 19-Inch Cabinet or Rack
This section describes how to install an RHUB3908 in a 19-inch cabinet.
Procedure
The following describes how to install an RHUB3908 with mounting ears in reverse mode:
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If necessary, request one more person for assistance.
1.With one hand holding it, align the mounting holes with the installation holes, slowly push the RHUB3908 into the required position in the cabinet, as shown in Figure 5-12.
Figure 5-12 Pushing an RHUB3908 into a cabinet
2.Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws with a torque of 2 N•m, as shown in Figure 5-13.
Figure 5-13 Tightening screws
The following describes how to install an RHUB3908 with mounting ears aligned with the RHUB3908 panel:
If necessary, request one more person for assistance.
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1.Remove the mounting ears on both sides of the RHUB3908 by removing the four M4×8 screws, as shown in Figure 5-14.
Figure 5-14 Removing mounting ears and screws
2.Use a torque screwdriver or Phillips screwdriver to tighten the four M4×8 screws with a torque of 1.4 N•m to install the removed mounting ears again, as shown in Figure 5-15. The mounting ears must be aligned with the RHUB3908 panel.
Figure 5-15 Installing mounting ears in standard mode
3.With one hand holding it, align the mounting holes with the installation holes, slowly push the RHUB3908 into the required position in the cabinet, as shown in Figure 5-16.
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Figure 5-16 Pushing an RHUB3908 into a cabinet
4.Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws with a torque of 2 N•m, as shown in Figure 5-17.
Figure 5-17 Tightening screws
----End
5.3.2 Installing an RHUB3908 in a 19-Inch Shelf
If a shelf houses more than one RHUB3908, 1 U space is required between two RHUB3908s. The PSU must be installed at the bottom of the cabinet.
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Procedure
The following describes how to install an RHUB3908 with mounting ears installed in reverse mode:
If necessary, request one more person for assistance.
1.With one hand holding it, align the mounting holes with the installation holes, slowly push the RHUB3908 into the required position in the shelf.
2.Use a torque screwdriver or Phillips screwdriver to tighten the four M6×16 screws with a torque of 2 N•m, as shown in Figure 5-18.
Figure 5-18 Tightening screws
The following describes how to install an RHUB3908 with mounting ears installed in standard mode:
If necessary, request one more person for assistance.
1.Remove the mounting ears on both sides of the RHUB by removing the four M4×8 screws, as shown in Figure 5-19.
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