7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
1/93
DBS3900
V200
Site Preparation Guidelines
Issue 01
Date 2008-04-30
Part Number
Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
2/93
Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any
assistance, please contact our local office or company headquarters.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
Copyright Huawei Technologies Co., Ltd. 2008. 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 the property of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
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 the statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
mailto:[email protected]://www.huawei.com/7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
3/93
Contents
About This Document.....................................................................................................................1
1 Safety Information.....................................................................................................................1-1
1.1 Safety Precautions...........................................................................................................................................1-1
1.2 Electricity Safety.............................................................................................................................................1-31.3 Inflammable Environment...............................................................................................................................1-5
1.4 Battery.............................................................................................................................................................1-5
1.5 Radiation.........................................................................................................................................................1-7
1.6 Working at Heights.........................................................................................................................................1-9
1.7 Mechanical Safety.........................................................................................................................................1-11
1.8 Others............................................................................................................................................................1-12
2 Site Requirements of the DBS3900.........................................................................................2-1
2.1 Site Selection Requirements of the NodeB.....................................................................................................2-2
2.2 Requirements of the DBS3900 for Installation Space....................................................................................2-22.2.1 Space Requirements of the BBU3900....................................................................................................2-3
2.2.2 Space Requirements of the RRU and SRXU.........................................................................................2-4
2.2.3 Space Requirements of the SLPU..........................................................................................................2-8
2.3 Construction Requirements of the BBU3900 Equipment Room..................................................................2-10
2.4 Requirements for the Tower Where the RRU is Installed.............................................................................2-12
2.5 Working Environment Requirements of the DBS3900.................................................................................2-13
3 Power Supply Requirements of the DBS3900......................................................................3-1
4 Grounding Requirements of the DBS3900............................................................................4-1
5 Transmission Requirements of the NodeB Site...................................................................5-1
6 Preparing Auxiliary Facilities for the DBS3900 Site...........................................................6-1
6.1 Installing the Cable Rack................................................................................................................................6-2
6.1.1 Introduction to Cable Racks...................................................................................................................6-2
6.1.2 Procedure for Installing the Cable Rack.................................................................................................6-4
6.1.3 Installing the Outdoor Cable Rack.........................................................................................................6-4
6.1.4 Connecting Cable Ladders.....................................................................................................................6-7
6.1.5 Installing the Cable Trough..................................................................................................................6-13
6.1.6 Installing Accessories...........................................................................................................................6-17
6.2 Installing the Grounding Bar of the NodeB..................................................................................................6-19
DBS3900
Site Preparation Guidelines Contents
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
i
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
4/93
6.3 Preparing the Metal Pole...............................................................................................................................6-21
7 Preparing Auxiliary Facilities for the DBS3900 Antenna System.................................... 7-1
7.1 Requirements for the Tower............................................................................................................................7-2
7.2 Installing the Antenna Support on the Tower.................................................................................................7-37.3 Installing the Antenna Support on the Rooftop...............................................................................................7-5
8 Requirements for NodeB Cables.............................................................................................8-1
8.1 Requirements for the Materials of the Outdoor NodeB Cables......................................................................8-2
8.2 Cabling Specifications for the NodeB.............................................................................................................8-2
9 Checklist for the DBS3900 Site Preparation......................................................................... 9-1
Index.................................................................................................................................................i-1
Contents
DBS3900
Site Preparation Guidelines
ii Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
5/93
Figures
Figure 1-1 Wearing an ESD wrist strap...............................................................................................................1-5
Figure 1-2 Lifting a weight................................................................................................................................1-10
Figure 1-3 Slant angle........................................................................................................................................1-11
Figure 1-4 One meter higher than the eave........................................................................................................1-11
Figure 2-1 Space requirements of the BBU3900 in the 19-inch cabinet (unit: mm)...........................................2-3
Figure 2-2 Space requirements of the BBU3900 on the wall (unit: mm)............................................................2-4
Figure 2-3 Recommended space requirements of one RRU with and without the SRXU (unit: mm)................2-5
Figure 2-4 Minimal space requirements of one RRU with and without the SRXU (unit: mm)...........................2-6
Figure 2-5 Space requirements of two combined RRUs (unit: mm)....................................................................2-6
Figure 2-6 Recommended space requirements of multiple RRUs with and without the SRXUs (unit: mm)......2-7
Figure 2-7 Minimal space requirements of multiple RRUs with and without the SRXUs (unit: mm)................2-8
Figure 2-8 Space requirements of the SLPU in the 19-inch cabinet (unit: mm)..................................................2-9
Figure 2-9 Space requirements of the SLPU on the wall (unit: mm)...................................................................2-9
Figure 6-1 Cable ladder........................................................................................................................................6-3Figure 6-2 U-shape connecting piece...................................................................................................................6-3
Figure 6-3 Bracket angle......................................................................................................................................6-3
Figure 6-4 Cable manager....................................................................................................................................6-3
Figure 6-5 Triangular support..............................................................................................................................6-3
Figure 6-6 Connecting clip...................................................................................................................................6-3
Figure 6-7 Fixing clip...........................................................................................................................................6-3
Figure 6-8 Cable trough.............................................................................. .........................................................6-3
Figure 6-9 Bushing...............................................................................................................................................6-4
Figure 6-10 End cover..........................................................................................................................................6-4
Figure 6-11 Rectangular frame.............................................................................................................................6-4
Figure 6-12 U-steel...............................................................................................................................................6-4
Figure 6-13 Over-cabinet support........................................................................................................................6-4
Figure 6-14 Rectangular frame.............................................................................................................................6-5
Figure 6-15 Installing the outdoor cable rack on the floor...................................................................................6-6
Figure 6-16 Installing the outdoor cable rack on the wall....................................................................................6-7
Figure 6-17 Docking cable ladders......................................................................................................................6-8
Figure 6-18 Ladders turned on the same level (no cable trough).........................................................................6-9
Figure 6-19 Turning the cable ladder at different levels....................................................................................6-10
Figure 6-20 Connecting the cable ladder to the wall..........................................................................................6-11
DBS3900
Site Preparation Guidelines Figures
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
iii
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
6/93
Figure 6-21 Front connection of cable ladders...................................................................................................6-12
Figure 6-22 Side connection of cable ladders....................................................................................................6-12
Figure 6-23 Oblique connection of cable ladders...............................................................................................6-13
Figure 6-24 Connecting cable troughs...............................................................................................................6-14
Figure 6-25 Installing a cable trough on the 200-mm or 400-mm wide cable ladder........................................6-14
Figure 6-26 Installing cable troughs onto the 600-mm wide cable ladder.........................................................6-15
Figure 6-27 Cutting off the upper side of the triangle aperture .........................................................................6-16
Figure 6-28 Installing a sloping cable trough.....................................................................................................6-16
Figure 6-29 Installed sloping cable trough ........................................................................................................6-17
Figure 6-30 Cable manager on the cable rack that is not installed with a cable trough.....................................6-18
Figure 6-31 Cable manager on the cable rack that is installed with a cable trough...........................................6-18
Figure 6-32 Installing the end cover, bushing, and baffle ring..........................................................................6-19
Figure 6-33 Grounding bar of the NodeB..........................................................................................................6-20
Figure 6-34 Installing the grounding bar............................................................................................................6-20
Figure 6-35 Profile chart for installing the grounding bar.................................................................................6-21
Figure 6-36 Installing the metal pole on the concrete floor...............................................................................6-22
Figure 6-37 Two stay poles with a metal pole...................................................................................................6-22
Figure 6-38 Base................................................................................................................................................6-23
Figure 6-39 Two metal poles with a stay pole...................................................................................................6-23
Figure 7-1 Tower for telecommunication purpose...............................................................................................7-2
Figure 7-2 Structure of the antenna support (unit: mm).......................................................................................7-4
Figure 7-3 Installing the antenna support on the tower........................................................................................7-5
Figure 7-4 Structure of the antenna support directly installed on the rooftop......................................................7-6Figure 7-5 Installing the antenna support on the parapet (height of the parapet > 1,200 mm)............................7-7
Figure 7-6 Installing the fixing clip for the antenna support on the parapet........................................................7-7
Figure 7-7 Installing the antenna support on the parapet (height of the parapet < 1,200 mm)............................7-8
Figure 7-8 Structure and installation of the antenna support base ...................................................................... 7-9
Figures
DBS3900
Site Preparation Guidelines
iv Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
7/93
Tables
Table 2-1 Climatic requirements........................................................................................................................2-13
Table 2-2 Requirements for the density of physically active materials..............................................................2-14
Table 2-3 Requirements for the density of chemically active materials............................................................2-14
Table 2-4 Mechanical stress requirements.........................................................................................................2-14
Table 3-1 Power supply requirements of the DBS3900.......................................................................................3-1
Table 6-1 Items required for mounting a cable rack.............................................................................................6-3
Table 8-1 Requirements for the materials of the outdoor NodeB cables.............................................................8-2
DBS3900
Site Preparation Guidelines Tables
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
v
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
8/93
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
9/93
About This Document
Purpose
Before installing the DBS3900 hardware, you need to conduct site survey to select an appropriate
site. This ensures proper operation of the DBS3900.
This document serves as a reference for conducting the DBS3900 site survey. It describes the
site requirements in terms of the site location, power supply, transmission, grounding, and
auxiliary facilities of the site and antenna system. To ensure smooth site construction, the site
requirements described in this document must be met.
Product Version
The following table lists the product version related to this document.
Product Name Product Version
DBS3900 V200R010
Intended Audience
This document is intended for NodeB installers.
Change History
For changes in the document, refer to Changes in the DBS3900 Site Preparation
Guidelines.
Organization
1 Safety Information
2 Site Requirements of the DBS3900
This describes the site requirements of the DBS3900. The proper installation, commissioning,
and operation of the DBS3900 are ensured only when the installation space is planned and
prepared in compliance with the site requirements. The site requirements of the DBS3900 consist
of the site selection, installation space, construction of the BBU3900 equipment room and thetower where the RRU is installed, and the operating environment requirements.
DBS3900
Site Preparation Guidelines About This Document
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1
http://-/?-http://-/?-http://-/?-7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
10/93
3 Power Supply Requirements of the DBS3900
This describes the power supply requirements of the DBS3900. To ensure the proper operation
of the power system of the DBS3900, the power supply of all the functional modules must
comply with the related specifications.
4 Grounding Requirements of the DBS3900
Grounding requirements of the BBU3900 and RRU in the DBS3900 system must be satisfied.
5 Transmission Requirements of the NodeB Site
This describes the transmission requirements of the NodeB. The transmission devices and
auxiliary devices must be prepared before the site construction. Transmission requirements of
the NodeB site consist of the requirements for the DDF/ODF and transmission mode.
6 Preparing Auxiliary Facilities for the DBS3900 Site
This describes how to prepare the auxiliary facilities such as the cable rack, grounding bar, andmetal pole for the DBS3900 site. Before you install the DBS3900, the auxiliary facilities must
be prepared.
7 Preparing Auxiliary Facilities for the DBS3900 Antenna System
This describes how to prepare the auxiliary facilities such as the tower and antenna support for
the DBS3900 antenna system in different installation scenarios.
8 Requirements for NodeB Cables
This describes the requirements for materials and routing of the NodeB cables such as the power
cables, signal cables, and PGND cables.
9 Checklist for the DBS3900 Site Preparation
This describes how to check the NodeB site preparations. Before installing the NodeB, you need
to check the site, power supply, transmission system, grounding system, antenna system,
auxiliary facilities, and cables.
Conventions
1. Symbol Conventions
The following symbols may be found in this document. They are defined as follows
Symbol Description
DANGER
Indicates a hazard with a high level of risk that, if not avoided,
will result in death or serious injury.
WARNING
Indicates a hazard with a medium or low level of risk which, if
not avoided, could result in minor or moderate injury.
CAUTION
Indicates a potentially hazardous situation that, if not avoided,
could cause equipment damage, data loss, and performance
degradation, or unexpected results.
About This Document
DBS3900
Site Preparation Guidelines
2 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
11/93
Symbol Description
TIP Indicates a tip that may help you solve a problem or save your
time.
NOTE Provides additional information to emphasize or supplement
important points of the main text.
2. 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 userroot .
Italic Book titles are in italics.
Courier New Terminal display is in Courier New.
3. Command Conventions
Convention Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italic.
[ ] 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.
[ x | y | ... ] * Alternative items are grouped in braces and separated by vertical
bars.A minimum of zero or a maximum of all can be selected.
4. GUI Conventions
Convention Description
Boldface Buttons,menus,parameters,tabs,window,and dialog titles are in
boldface. For example,clickOK.
> Multi-level menus are in boldfaceand separated by the ">" signs.
For example,choose File > Create > Folder .
DBS3900
Site Preparation Guidelines About This Document
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
3
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
12/93
5. Keyboard Operation
Convention Description
Key Press the key.For example,press Enter and press Tab.
Key1+Key2 Press the keys concurrently.For example,pressing Ctrl+Alt+A
means the three keys should be pressed concurrently.
Key1,Key2 Press the keys in turn.For example,pressing Alt,A means the two
keys should be pressed in turn.
6. Mouse Operation
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.
About This Document
DBS3900
Site Preparation Guidelines
4 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
13/93
1 Safety Information1.1 Safety Precautions
This section describes certain safety precautions and helps to choose the measurement device
and testing device. Read and follow these safety precautions before installing, operating, and
maintaining Huawei devices.
Following All Safety Precautions
Before any operation, read the instructions and precautions in this document carefully to
minimize the possibility of accidents.
The Danger, Caution, and Note items in the package of documents do not cover all the safety
precautions that must be followed. They only provide the generic safety precautions for
operations.
Symbols
DANGER
This symbol indicates that casualty or serious accident may occur if you ignore the safety
instruction.
CAUTION
This symbol indicates that serious or major injury may occur if you ignore the safety instruction.
NOTE
This symbol indicates that the operation may be easier if you pay attention to the safety instruction.
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-1
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
14/93
Complying with the Local Safety Regulations
When operating the device, comply with the local safety regulations. The safety precautions
provided in the documents are supplementary. You must comply with the local safety
regulations.
General Installation Requirements
The personnel in charge of installation and maintenance must be trained and master the correct
operating methods and safety precautions before beginning work.
The rules for installing and maintaining the device are as follows:
l Only the trained and qualified personnel can install, operate and maintain the device.
l Only the qualified specialists are allowed to remove the safety facilities, and repair the
device.
l Any replacement of the device or part of the device (including the software) or any change
made to the device must be performed by qualified or authorized personnel of Huawei.
l Any fault or error that might cause safety problems must be reported immediately to the
personnel in charge.
Grounding Requirements
The following requirements are applicable to the device to be grounded:
l Ground the device before installation and remove the ground cable after uninstallation.
l Do not operate the device in the absence of a ground conductor. Do not damage the groundconductor.
l The unit (or system) must be permanently connected to the protection ground before
operation. Check the electrical connection of the device before operation and ensure that
the device is reliably grounded.
Safety of Personnel
Ensure the following:
l When lightning strikes, do not operate the device and cables.
l When lightning strikes, unplug the AC power connector. Do not use the fixed terminal or
touch the terminal or antenna connector.
NOTE
The previous two requirements are suitable for the wireless fixed terminal.
l To prevent electric shock, do not connect safety extra-low voltage (SELV) circuits to
telecommunication network voltage (TNV) circuits.
l To prevent laser radiation from injuring your eyes, never look into the optical fiber outlet
with unaided eyes.
l To prevent electric shock and burns, wear the electrostatic discharge (ESD) clothing, gloves
and wrist strap, and remove conductors such as jewelry and watch before operation.
1 Safety Information
DBS3900
Site Preparation Guidelines
1-2 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
15/93
Device Safety
l Before operation, the device must be secured on the floor or other fixed objects, such as
the walls and the mounting racks.
l Do not block ventilation openings while the system is running.
l When installing the panel, tighten the screw with the tool.
1.2 Electricity Safety
High Voltage
DANGER
l The high voltage power supply provides power for running the system. Direct contact with
the high voltage power supply or contact through damp objects may result in fatal danger.
l Non-standard and improper high voltage operations may result in fire and electric shock.
l The personnel who install the AC facility must be qualified to perform operations on high
voltage and AC power supply facilities.
l When installing the AC power supply facility, follow the local safety regulations.
l When operating the AC power supply facility, follow the local safety regulations.
l When operating the high voltage and AC power supply facilities, use the specific tools
instead of common tools.
l When the operation is performed in a damp environment, ensure that water is kept off the
device. If the cabinet is damp or wet, shut down the power supply immediately.
Thunderstorm
The following requirements are suitable only for the wireless base station or the device with an
antenna or GPS antenna.
DANGER
In a thunderstorm, do not perform operations on high voltage and AC power supply facilities or
on a steel tower and mast.
High Electrical Leakage
CAUTION
Ground the device before powering on the device. Otherwise, the personnel and device are in
danger.
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-3
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
16/93
If the "high electrical leakage" flag is stuck to the power terminal of the device, you must ground
the device before powering it on.
Power Cable
CAUTION
Do not install and remove the power cable with a live line. Transient contact between the core
of the power cable and the conductor may generate electric arc or spark, which may cause fire
or eye injury.
l Before installing or removing the power cable, turn off the power switch.
l Before connecting the power cable, ensure that the power cable and label comply with the
requirements of the actual installation.
Fuse
CAUTION
To ensure that the system runs safely, when a fuse blows, replace it with a fuse of the same type
and specifications.
Electrostatic Discharge
CAUTION
The static electricity generated by the human body may damage the electrostatic sensitive
components on the circuit board, such as the large-scale integrated circuit (LIC).
In the following situations, the human body generates a static electromagnetic field:
l Movement of body parts
l Clothes friction
l Friction between shoes and the ground
l Holding plastic in hand
The static electromagnetic field will remain within the human body for a long time.
Before contacting the device, plug boards, circuit boards, and application specific integrated
circuits (ASICs), wear a grounded ESD wrist strap. It can prevent the sensitive components from
being damaged by the static electricity in the human body.
Figure 1-1shows how to wear an ESD wrist strap.
1 Safety Information
DBS3900
Site Preparation Guidelines
1-4 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
17/93
Figure 1-1 Wearing an ESD wrist strap
1.3 Inflammable Environment
DANGER
Do not place the device in the environment that has inflammable and explosive air or fog. Do
not perform any operation in this environment.
Any operation of the electrical device in the inflammable environment causes danger.
1.4 Battery
Storage Battery
DANGERBefore handling the storage battery, read the safety precautions for the handling and connection
of the storage battery.
Incorrect operation of storage batteries may cause danger. During operation, ensure the
following:
l Prevent any short-circuit.
l Prevent the electrolyte from overflowing and leakage.
Electrolyte overflow may damage the device. It will corrode the metal parts and the circuitboards, and ultimately damage the device and cause short-circuit of the circuit boards.
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-5
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
18/93
General Operations
Before installing and maintaining the storage battery, ensure the following:
l Use special insulation tools.
l Use eye protection devices and operate with care.
l Wear rubber gloves and an apron in case of an electrolyte overflow.
l Always keep the battery upright when moving. Do not place the battery upside down or tilt
it.
Short-Circuit
DANGER
Short-circuit of the battery may cause injury. Although the voltage of a battery is low, high
transient current generated by short-circuit will release a surge of power.
Keep metal objects away from the battery to prevent short circuit. If they have to be used,
disconnect the battery in use before performing any other operation.
Harmful Gas
CAUTION
l Do not use unsealed lead-acid storage batteries, because the gas emitted from it may result
in fire or device corrosion.
l Lay the storage battery horizontally and fix it properly.
The lead-acid storage battery in use will emit flammable gas. Therefore, store it in a place with
good ventilation and take precautions against fire.
High Temperature
CAUTION
High temperature may result in distortion, damage, and electrolyte overflow of the battery.
When the temperature of the battery exceeds 60oC, check whether there is acid overflow. If acid
overflow occurs, handle the acid immediately.
1 Safety Information
DBS3900
Site Preparation Guidelines
1-6 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
19/93
Acid
CAUTION
If the acid overflows, it should be absorbed and neutralized immediately.
When handling a leaky battery, protect against the possible damage caused by the acid. Use the
following materials to absorb and neutralize acid spills:
l Sodium bicarbonate (baking soda): NaHCO3
l Sodium carbonate (soda): Na2CO3
Antacids must be used according to the instructions provided by the battery manufacturer.
Lithium Battery
CAUTION
There is danger of explosion if the battery is incorrectly replaced.
l Replace the lithium battery with the same or equivalent type recommended by the
manufacturer.
l Dispose of the used battery according to the instructions provided by the manufacturer.
l Do not dispose of the lithium battery in fire.
1.5 Radiation
Electromagnetic Field Exposure
CAUTION
High power radio-frequency signals are harmful to human body.
Before installing or maintaining an antenna on a steel tower or mast with a large number of
transmitter antennas, the operator should coordinate with all parties to ensure that the transmitter
antennas are shut down.
The base transceiver station (BTS) has RF radiation (radiation hazard). Suggestions for the
installation and operation of BTSs are given in the following section. Operators are also required
to comply with the related local regulations on erecting BTSs.
l
The antenna should be located in an area that is inaccessible to the public where the RFradiation exceeds the stipulated value.
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-7
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
20/93
l If the areas where RF radiation exceeds the stipulated value are accessible to workers,
ensure that workers know where these areas are. They can shut down the transmitters before
entering these areas. Such areas may not exist; but if they exist, the areas must be within a
range of less than 10 m around the antennas.
l Each forbidden zone should be indicated by a physical barrier and striking sign to warn thepublic or workers.
Laser
CAUTION
When handling optical fibers, do not stand close to, or look into the optical fiber outlet with
unaided eyes.
Laser transceivers or transmitters are used in the optical transmission system and associated test
tools. Because the laser that is transmitted through the optical fiber produces a small beam of
light, it has a very high power density and is invisible to human eyes. If a beam of light enters
the eye, the retina may be damaged.
Normally, staring into the end of an unterminated optical fiber or broken optical fiber with the
unaided eyes from a distance of more than 150 mm [5.91 in.] will not cause eye injury. Eyes
may, however, be damaged if an optical tool such as a microscope, magnifying glass or eye
loupe is used to stare into the bare optical fiber end.
Read the following guidelines to prevent laser radiation:
l
Only the trained and authorized personnel can perform the operation.l Wear a pair of eye-protective glasses when you are handling lasers or optical fibers.
l Ensure that the optical source is switched off before disconnecting optical fiber connectors.
l Never look into the end of an exposed optical fiber or an open connector if you cannot
ensure that the optical source is switched off.
l To ensure that the optical source is switched off, use an optical power meter.
l Before opening the front door of an optical transmission system, ensure that you are not
exposed to laser radiation.
l Never use an optical tool such as a microscope, a magnifying glass, or an eye loupe to look
into the optical fiber connector or end.
Read the following instructions before handling optical fibers:
l Only the trained personnel can cut and splice optical fibers.
l Before cutting or splicing an optical fiber, ensure that the optical fiber is disconnected from
the optical source. After disconnecting the optical fiber, use protecting caps to protect all
the optical connectors.
1 Safety Information
DBS3900
Site Preparation Guidelines
1-8 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
21/93
1.6 Working at Heights
CAUTION
When working at heights, ensure that the objects do not fall.
When working at heights, ensure that the following requirements must be met:
l The personnel who work at heights must be trained.
l The operating machines and tools should be carried and handled safely to prevent them
from falling.
l
Safety measures, such as wearing a helmet and a safety belt, should be taken.l In cold regions, warm clothes should be worn before working at heights.
l Ensure that the lifting appliances are well prepared for working at heights.
Lifting Weights
CAUTION
Do not access the areas under the arm of the crane and the goods in suspension when lifting
weights.
l Ensure that the operators have been trained and qualified.
l Check the weight lifting tools and ensure that they are intact.
l Lift the weight only when the weight lifting tools are firmly mounted onto the weight-
bearing object or the wall.
l Use a concise instruction to prevent incorrect operation.
l The angle between the two cables should be less than or equal to 90o in the lifting of weights
(See Figure 1-2).
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-9
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
22/93
Figure 1-2 Lifting a weight
Safety Guide on Ladder Use
Checking the Ladder
l Check the ladder before using it. Check the maximum weight that the ladder can support.
l Never overload the ladder.
Placing the Ladder
l The slant angle is preferred to be 75o. The slant can be measured with the angle square or
with arms, as shown in Figure 1-3. When using a ladder, place the wider end of the ladder
on the ground and take protective measures on the base of the ladder against slippage. Place
the ladder on a stable ground.
When climbing the ladder, ensure the following:
l The gravity of the body does not shift from the edge of the ladder.
l Keep balance on the ladder before performing any operation.
l Do not climb higher than the fourth highest step of the ladder.
If you tend to climb to the roof, the length of the ladder should be at least one meter higher than
the eave, as shown in Figure 1-4.
1 Safety Information
DBS3900
Site Preparation Guidelines
1-10 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
23/93
Figure 1-3 Slant angle
Figure 1-4 One meter higher than the eave
1.7 Mechanical Safety
Drilling
CAUTION
Do not drill on the cabinet without permission. Inappropriate drilling on the cabinet may damage
the electromagnetic shielding and internal cables. Metal shavings from the drilling may result
in a short-circuit of the circuit board if they get into the cabinet.
l Before drilling a hole on the cabinet, remove the cables from the cabinet.
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-11
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
24/93
l During the drilling, wear blinkers to protect your eyes.
l During the drilling, wear the protective gloves.
l Prevent the metal shavings from getting into the cabinet. After drilling, clean the metal
shavings in time.
Handling Sharp Objects
CAUTION
When carrying the device by hand, wear the protective gloves to prevent injury by sharp objects.
Handling Fans
l When replacing a component, place the component, screw, and tool at a safe place to preventthem from falling into the running fan.
l When replacing the ambient equipment around the fan, do not place the finger or board
into the running fan until the fan is switched off and stops running.
Moving Heavy Objects
Wear the protective gloves when moving heavy objects.
CAUTION
l Be careful when moving heavy objects.
l When moving the chassis outwards, be aware about the unfixed or heavy objects on the
chassis to prevent injury.
l Two persons should be available to move a chassis; one person must not move a heavy
chassis. When moving a chassis, keep your back straight and move stably to prevent a
sprain.
l When moving or lifting a chassis, hold the handle or bottom of the chassis. Do not hold the
handle of the installed modules in the chassis, such as the power module, fan module, or
board.
1.8 Others
Inserting and Removing a Board
CAUTION
When inserting a board, wear the ESD wrist strap or gloves. Insert the board gently to prevent
any bent pins on the backplane.
1 Safety Information
DBS3900
Site Preparation Guidelines
1-12 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
25/93
l Insert the board along the guide rail.
l Avoid contact of one board with another to prevent short-circuit or damage.
l Do not remove the active board before powering off.
l
When holding a board in hand, do not touch the board circuit, components, connectors, orconnection slots.
Bundling Signal Cables
CAUTION
Bundle the signal cables separately from the strong current cables or high voltage cables.
Cabling Requirements
At a very low temperature, movement of the cable may damage the plastic skin of the cable. To
ensure the construction safety, comply with the following requirements:
l When installing cables, ensure that the environment temperature is above 0oC.
l If cables are stored in the place below 0oC, move the cables into a place at a room
temperature and store the cables for more than 24 hours before installation.
l Move the cables with care, especially at a low temperature. Do not drop the cables directly
from the vehicle.
DBS3900
Site Preparation Guidelines 1 Safety Information
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
1-13
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
26/93
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
27/93
2 Site Requirements of the DBS3900About This Chapter
This describes the site requirements of the DBS3900. The proper installation, commissioning,
and operation of the DBS3900 are ensured only when the installation space is planned and
prepared in compliance with the site requirements. The site requirements of the DBS3900 consist
of the site selection, installation space, construction of the BBU3900 equipment room and the
tower where the RRU is installed, and the operating environment requirements.
2.1 Site Selection Requirements of the NodeB
This describes the site selection requirements of the NodeB. To ensure the stable running of the
NodeB overa long term, the site for the NodeB must meet the requirements fortelecommunication network planning, communications technology, hydrology, geology, and
traffic.
2.2 Requirements of the DBS3900 for Installation Space
DBS3900This describes the space requirements of the DBS3900. The space requirements of the
DBS3900 consist of the space requirements of the BBU3900, the RRU3804, and the SRXU.
2.3 Construction Requirements of the BBU3900 Equipment Room
This describes the construction requirements of the equipment room in which the BBU3900 is
installed.
2.4 Requirements for the Tower Where the RRU is Installed
This describes the requirements for the tower where the RRU is installed. To ensure the safetyof installers and equipment, the towers must meet the related construction requirements.
2.5 Working Environment Requirements of the DBS3900
This describes the working environment requirements of the DBS3900.
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-1
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
28/93
2.1 Site Selection Requirements of the NodeB
This describes the site selection requirements of the NodeB. To ensure the stable running of the
NodeB over a long term, the site for the NodeB must meet the requirements for
telecommunication network planning, communications technology, hydrology, geology, and
traffic.
The selection of the NodeB site must meet the follows requirements:
l The site is not exposed to excessive heat, dust, harmful gases, flammable or explosive
materials, or unstable voltage.
l The site is not located at places that are prone to frequent earthquakes and exposed to loud
noise.
l The site is far from power transformer station, industrial boiler, and heating boiler.
l The site is located far from high-power radio transmitters, radar stations, or otherinterference sources. The interference field intensity is not higher than the shielding
specifications of the NodeB for useless radiation.
l The equipment room for the indoor NodeB is constructed at least 3.7 km away from the
seaside or a salt lake. If this requirement cannot be met, the equipment room must be
enclosed and configured with air conditioners. In addition, avoid using salt soil as the
building material for the room. Otherwise, the equipment that can withstand the adverse
weather must be configured.
l The distance between the outdoor NodeB and the sea exceeds 500 m.
l The site is away from pollution sources. If this requirement cannot be met, ensure that the
site is in the perennial upwind direction of the pollution source.
The site is at least 5 km away from heavy pollution sources such as a smelting plant or
a coal mine.
The site is at least 3.7 km away from medium pollution sources such as a chemical plant,
a rubber plant, or an electric plating plant.
The site is at least 2 km away from light pollution sources such as a food products factory
or a leather processing factory.
l The air inlets of the telecommunication equipment are far away from the sewer pipe, septic
tank, and sewage disposal pool. The equipment are in positive pressure state and free from
corrosive gas. Otherwise, electronic components and circuit boards may corrode.
l The room for feeding poultry and the chemical fertilizer warehouse cannot be used as the
equipment room for the indoor NodeB. If this requirement cannot be met, ensure that the
equipment room is constructed in the perennial upwind direction of the room for feeding
poultry or the chemical fertilizer warehouse.
l The equipment room for the indoor NodeB is preferably on the second floor or higher. If
this requirement cannot be met, ensure that the room is located at least 600 mm above the
maximum local flood level.
2.2 Requirements of the DBS3900 for Installation Space
DBS3900This describes the space requirements of the DBS3900. The space requirements of the
DBS3900 consist of the space requirements of the BBU3900, the RRU3804, and the SRXU.
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-2 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
29/93
2.2.1 Space Requirements of the BBU3900
This describes the space requirements of the BBU3900. When installed in a 19-inch cabinet, the
BBU3900 has the minimal space requirements for cabling and OM. In addition, Huawei offers
the recommended space requirements.
2.2.2 Space Requirements of the RRU and SRXUIn different installation modes, the RRU and SRXU have the minimal space requirements for
cabling and OM. Based on the engineering practice, Huawei offers the recommended space
requirements.
2.2.3 Space Requirements of the SLPU
This describes the space requirements of the SLPU. When installed in a 19-inch cabinet on a
wall, the SLPU has the minimal space requirements for cabling and OM. In addition, Huawei
offers the recommended space requirements.
2.2.1 Space Requirements of the BBU3900
This describes the space requirements of the BBU3900. When installed in a 19-inch cabinet, theBBU3900 has the minimal space requirements for cabling and OM. In addition, Huawei offers
the recommended space requirements.
Space Requirements of the BBU3900 in the 19-Inch Cabinet
Figure 2-1 shows the space requirements of the BBU3900 when it needs to be installed in the
19-inch cabinet.
Figure 2-1 Space requirements of the BBU3900 in the 19-inch cabinet (unit: mm)
The minimal space around the BBU3900 is as follows:l 25 mm on both sides for ventilation
l 70 mm in front of the panel for cabling
Space Requirements of the BBU3900 on the Wall
Figure 2-2 shows the recommended space requirements when a single BBU3900 is installed on
the wall.
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-3
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
30/93
Figure 2-2 Space requirements of the BBU3900 on the wall (unit: mm)
The minimal space around the BBU3900 is as follows:
l 20 mm above the equipment for maintenance
l 800 mm between the bottom and the ground for cabling and maintenance
l 50 mm on both sides for ventilation
l 600 mm in front of the equipment for maintenance
2.2.2 Space Requirements of the RRU and SRXU
In different installation modes, the RRU and SRXU have the minimal space requirements for
cabling and OM. Based on the engineering practice, Huawei offers the recommended space
requirements.
NOTE
The following figures related to the space requirements assume that the cabling cavities are on the left side
of the RRU and SRXU. If the RRU and SRXU are installed with the cabling cavities on the right, the
horizontal space requirements are opposite to what are shown in the figures.
Space Requirements of One RRU with and Without the SRXU
Figure 2-3 shows the recommended space requirements of one RRU with and without the
SRXU.
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-4 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
31/93
Figure 2-3 Recommended space requirements of one RRU with and without the SRXU (unit:
mm)
The recommended space around the equipment is as follows:
l At least 500 mm under the equipment for cabling. It is recommended that the space be
1,200 mm between the bottom and the ground for easy maintenance.
l At least 800 mm in front of the equipment for maintenance.
l
At least 200 mm above the equipment for maintenance.l At least 600 mm on the left of the equipment for maintenance.
l At least 300 mm on the right of the equipment for maintenance.
l Regardless of whether the SRXU is fixed to the RRU, the space requirements are the same.
Figure 2-4 shows the minimal space requirements of one RRU with and without the SRXU.
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-5
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
32/93
Figure 2-4 Minimal space requirements of one RRU with and without the SRXU (unit: mm)
The minimal space around the equipment is as follows:
l 300 mm under the equipment for cabling. It is recommended that the space be 1,200 mm
between the equipment bottom and the ground for easy maintenance.
l 600 mm in front of the equipment for maintenance.
l 200 mm above the equipment for maintenance.
l 400 mm on the left of the equipment for maintenance.
l 100 mm on the right of the equipment for maintenance.
When two RRUs need to be combined, space requirements of each RRU must be met. In addition,
the space between the two RRUs should stay within the range shown in Figure 2-5.
Figure 2-5 Space requirements of two combined RRUs (unit: mm)
The space between the two RRUs is as follows:
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-6 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
33/93
l When two RRUs are installed horizontally, the space is 1,200 mm at most.
l When two RRUs are installed vertically, the space is 800 mm at most.
NOTE
The space requirements of two combined SRXUs are the same as those of two combined RRUs.
Space Requirements of Multiple RRUs with and Without the SRXUs
Figure 2-6 shows the recommended space requirements of multiple RRUs with and without the
SRXUs.
Figure 2-6 Recommended space requirements of multiple RRUs with and without the SRXUs
(unit: mm)
The recommended space around the equipment is as follows:
l At least 500 mm under the equipment for cabling. It is recommended that the space be
1,200 mm between the bottom and the ground for easy maintenance.
l At least 800 mm in front of the equipment for maintenance.
l At least 200 mm above the equipment for maintenance.
l At least 800 mm on the left of the equipment for maintenance.
l At least 800 mm on the right of the equipment for maintenance.
l Regardless of whether the SRXUs are fixed to the RRU, the space requirements are the
same.
l Regardless of whether the RRUs are in two-module or three-module centralized installation
mode, the space requirements are the same.
Figure 2-7 shows the minimal space requirements of multiple RRUs with and without the
SRXUs.
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-7
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
34/93
Figure 2-7 Minimal space requirements of multiple RRUs with and without the SRXUs (unit:
mm)
The minimal space around the equipment is as follows:
l 300 mm under the equipment for cabling. It is recommended that the space be 1,200 mm
between the equipment bottom and the ground for easy maintenance.
l 600 mm in front of the equipment for maintenance.
l 200 mm above the equipment for maintenance.
l 600 mm on the left of the equipment for maintenance.
l 600 mm on the right of the equipment for maintenance.
2.2.3 Space Requirements of the SLPU
This describes the space requirements of the SLPU. When installed in a 19-inch cabinet on a
wall, the SLPU has the minimal space requirements for cabling and OM. In addition, Huawei
offers the recommended space requirements.
Space Requirements of the SLPU in the 19-Inch CabinetFigure 2-8 shows the space requirements of the SLPU when it needs to be installed in the 19-
inch cabinet.
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-8 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
35/93
Figure 2-8 Space requirements of the SLPU in the 19-inch cabinet (unit: mm)
The minimal space around the SLPU is as follows:
l 25 mm on both sides for ventilation
l 70 mm in front of the panel for cabling
Space Requirements of the SLPU on the Wall
Figure 2-9 shows the space requirements of the SLPU when it needs to be installed on the wall.
Figure 2-9 Space requirements of the SLPU on the wall (unit: mm)
The minimal space around the SLPU is as follows:
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-9
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
36/93
l 20 mm above the equipment for maintenance
l 800 mm between the SLPU bottom and the ground for cabling and maintenance
l 50 mm on both sides for ventilation
l 800 mm in front of the SLPU for maintenance
2.3 Construction Requirements of the BBU3900 EquipmentRoom
This describes the construction requirements of the equipment room in which the BBU3900 is
installed.
Requirements for the Area of the Equipment Room
l The equipment room is large enough for equipment installation and future capacityexpansion.
l The feeder window is installed and feeders can be routed in the room.
l Sufficient space is provided for easy installation and maintenance of the equipment.
l The cabinet door can be opened and closed conveniently.
Requirements for the Height of the Equipment Room
The height of the equipment room refers to the distance between the horizontal beam or the air
vent and the floor. The room is high enough (generally 3 m to 3.5 m) to facilitate the installation
of cable racks and the layout of cables and feeders.
Requirements for the Bearing Capacity of the Equipment Room
The equipment is heavy. Thus, the architectural and structural engineers must check the bearing
capacity of the room based on the equipment weight, footprint of the equipment, installation
position, and structure of the equipment room.
The bearing capacity of the equipment room floor is over 450 kg/m2. If the bearing capacity is
insufficient, reinforce the building to ensure a sufficient bearing capacity.
Requirements for the Floor of the Equipment Room
The floor of the equipment room is semiconductor and dustproof. Generally, the movable
Electrostatic Discharge (ESD) floorboards are used in the equipment room.
l Floorboards are laid down firmly and there is no space between the boards. The horizontal
error per square meter is within 2 mm.
l If the room does not have movable ESD floorboards, you need to use ESD floor with a
volume resistance between 1.0 x 107 ohms to 1.0 x 1010 ohms.
l The ESD floor or movable floorboards are grounded by using cables and 1-megaohm
current-limiting resistance. Tests must prove that the terrazzo floor (including the concrete
floor) can meet the requirement.
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-10 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
37/93
l All cable holes in the floor are capped with cover plates. Positions for the holes are
determined in compliance with the engineering design and the dimensions are accurate to
ensure easy installation.
Requirements for the Door and Window of the Equipment Rooml The minimum dimension of the door is 2 m (height) x 1 m (width).
l The door and window are sealed with dustproof plastic tapes.
l Use reflecting paper on the windowpane or colored glass for windows that are exposed to
excessive sunlight. You may block the window if the light in the room is sufficient.
Requirements for the Walls and Rooftop of the Equipment Room
l The roof and walls are durable, well insulated, and leakproof.
l Waterproofing measures are taken if there are antenna poles or cable holes on the rooftop.
Ensure that the rooftop is strong enough to bear the weight of the equipment.
l Lusterless paint can be used on the walls. Avoid painting the walls with paint that chalks
off easily.
Shockproof Requirements of the Equipment Room
The equipment room is designed to resist one more degree of seismic intensity over the limit
stipulated in local regulations. If this requirement is not met, reinforce the equipment room until
it meets the shockproof requirements.
Requirements for ESD and EMI Performances of the Equipment Room
l The ESD floor or movable ESD floorboards are used in the equipment room and properlygrounded.
l The ESD work clothes and ESD wrist straps are provided in the equipment room.
l The density of the electric field is less than 300 mV/m. The density of the magnetic field
is less than 11 GS.
Lighting Requirements of the Equipment Room
l The equipment room is not exposed to direct sunlight. Otherwise, the circuit board and
other components of the equipment room are easily deformed.
l An anti-explosion lamp with soft lighting is installed in the room where the batteries are
located.l The unmanned equipment rooms are lit normally and powered by the mains.
l The DC power is provided as the emergency lighting for the equipment room of heavy
traffic or great importance.
Air Conditioning Requirements of the Equipment Room
The actual capacity of the air conditioner depends on the area of the equipment room and heating
values of the equipment. For details about the method of measuring the capacity, refer to
corresponding engineering design specifications.
For most NodeBs, two air conditioners are configured to work alternatively. The air conditionersettings are as follows:
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-11
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
38/93
l Humidity: 30% to 75%, preferably 50% to 60%
l Temperature: 18 to 28, preferably 20 to 25
Fire Protection Requirements of the Equipment Room
l Telecommunication buildings are major fire protection units. Therefore, the NodeB
equipment room must be designed in compliance with the local fire protection regulations.
l There is no flammable, explosive substance in the equipment room.
l Fire-fighting equipment are provided in the equipment room. If there are alarm devices
such as a smoke sensor or temperature sensor, they function normally.
l Sockets of different voltages in the equipment room are clearly labeled.
l The holes left in the floor are capped with safe cover plates.
l In addition to the alarm devices such as the fire-alarm and smoke detector, the equipment
room can also be installed with the automatic fire extinguisher. This can extinguish or
control the fire in the initial stage of fire. A certain number of portable fire extinguishersare provided in the corridor outside the equipment room so that they can be used in the
initial stage of the fire.
l The fire fighting pool, if equipped in compliance with the fire fighting specifications, can
meet the water demand for both inside and outside of the equipment room during the fire,
assuming the fire lasts for two hours. The fire hydrant is placed in the corridors or stair
wells for easy accessibility.
Requirements for the Corridor of the Equipment Room
l The width of the transporting corridor is greater than 1.5 m and the height is greater than
2.5 m.
l The emergency exit is free from obstruction. The emergency exit sign is clearly visible in
the equipment room.
l The height of the elevator is greater than 2.4 m.
2.4 Requirements for the Tower Where the RRU is Installed
This describes the requirements for the tower where the RRU is installed. To ensure the safety
of installers and equipment, the towers must meet the related construction requirements.
The requirements for the tower where the RRU is installed are as follows:
l Engineering specifications of the tower comply with the requirements for communication
equipment installation.
l There is a maintenance channel on the tower with safety design. The channel is spacious
enough to hold at least one person.
l Sufficient space is provided for the RRU installation and future maintenance.
l The grounding system meets the grounding requirements of the site.
l A grounding bar for connecting the PGND cable of the RRU is installed. If the grounding
bar is not installed, sufficient space is provided for installing the grounding bar.
l A cable rack is installed for the routing of the RRU cables such as the power cables and
optical cables. If the cable rack is not installed, sufficient space is provided for installingthe rack.
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-12 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
39/93
2.5 Working Environment Requirements of the DBS3900
This describes the working environment requirements of the DBS3900.
Climatic Requirements
Table 2-1 lists the climatic requirements for the working environment of the DBS3900.
Table 2-1 Climatic requirements
Item Specification
Altitude 4,000 m
Air pressure 70 kPa to 106 kPa
Temperature BBU3900: -20 to +55
RRU:
l -40 to +50 (with solar radiation)
l -40 to +55 (without solar radiation)
Relative humidity BBU3900: 5% to 85%
RRU: 5% to 100%
Absolute humidity BBU3900: 1 g/m3 to 25 g/m3
RRU: 1 g/m3 to 30 g/m3
Wind speed 67 m/s
Protection degree BBU3900: IP20
RRU: IP65
Biological Requirements
The working environment of the DBS3900 should not conducive for the growth of fungus or
mildew.
Air Cleanliness Requirements
The working environment of the DBS3900 should meet the following air cleanliness
requirements:
l There is no explosive, conductive, magneto-conductive or corrosive dust in the air.
l The density of the physically active materials meets the requirements listed in Table 2-2.
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-13
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
40/93
Table 2-2 Requirements for the density of physically active materials
Physically ActiveMaterial
Unit Density
Suspended dust mg/m3 0.01
Falling dust mg/(m2h) 10
Sand mg/m3 There is no visible sand.
Note:
l Suspended dust: diameter 75 m
l Falling dust: 75 m diameter 150 m
l Sand: 150 m diameter 1,000 m
l The density of the chemically active materials meets the requirements listed in Table
2-3.
Table 2-3 Requirements for the density of chemically active materials
Chemically ActiveMaterial
Unit Density
SO2 mg/m3 1.50
NH3 mg/m3 0.15
Cl2 mg/m3 0.30
Mechanical Stress Requirements
Table 2-4 lists the mechanical stress requirements for the working environment of the
DBS3900.
Table 2-4 Mechanical stress requirements
Item Subitem Specification
Sinusoidal
vibration
(ETSI
requirements)
Offset 3.5 mm -
Acceleration - 10.0 m/s2
Frequency range 2 Hz to 9 Hz 9 Hz to 200 Hz
Sinusoidal
vibration
(GR63
requirements)
Frequency range: 5-100-5 Hz; acceleration: 1.0 x g; scanning
frequency: 0.25 oct/min; triaxial test
2 Site Requirements of the DBS3900
DBS3900
Site Preparation Guidelines
2-14 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
41/93
Item Subitem Specification
Unsteady impact Impact response
spectrum II 100 m/s2
Static payload 0
Anti-seismic
requirements
Earthquake Frequency range: 0.3 Hz to 50 Hz
Zero Period Acceleration (ZPA): 1.5 x g
30s
Note:
l Impact response spectrum refers to the maximum acceleration response curve generated
by the equipment under the specified impact excitation. Impact response spectrum II means
that the duration of semi-sine impact response spectrum is 6 ms.
l Static payload refers to the capability of the equipment in a packing case to bear the pressure
from the top in normal pile-up method.
DBS3900
Site Preparation Guidelines 2 Site Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
2-15
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
42/93
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
43/93
3Power Supply Requirements of the DBS3900This describes the power supply requirements of the DBS3900. To ensure the proper operation
of the power system of the DBS3900, the power supply of all the functional modules must
comply with the related specifications.
Table 3-1 lists the power supply requirements of the DBS3900.
Table 3-1 Power supply requirements of the DBS3900
Functional Moduleof the DBS3900
Rated Voltage Voltage Range
BBU3900 -48 V DC -38.4 V DC to -57 V DC
RRU -48 V DC -36 V DC to -57 V DC
NOTE
If the voltage stability does not meet the requirements, you need to use voltage regulators to ensure a proper
power voltage range.
DBS3900
Site Preparation Guidelines 3 Power Supply Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
3-1
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
44/93
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
45/93
4Grounding Requirements of the DBS3900Grounding requirements of the BBU3900 and RRU in the DBS3900 system must be satisfied.
Grounding Requirements of the BBU3900
l The green and yellow PGND cable of the BBU3900 must be copper-based and plastic-
insulated with the cross-sectional area no less than 6 mm2.
l The grounding resistance of the BBU3900 is less than 10 ohms.
l When the BBU3900 is installed in the equipment room, the PGND cable of the
BBU3900 is connected to the protection grounding bar of the equipment room.
l When the BBU3900 is installed in outdoor cabinets such as the APM30 or the APM100,
the PGND cable of the BBU3900 is connected to the grounding bar in the cabinet.
l When the BBU3900 is connected to the RRU, do not use fibers that has have strengthening
ribs.
l When the E1/T1 cable of the BBU3900 is routed out of the equipment room overhead, add
a surge protection box for the BBU3900 that is installed in the equipment room. Connect
the PGND cable of the BBU3900 to the grounding bar on the surge protection box, and
then route the PGND cable from the surge protection box to the grounding bar of the
equipment room.
l When the E1/T1 cable of the BBU3900 is routed outdoors, add a surge protection box for
the BBU3900 that is installed in an outdoor cabinet. Connect the PGND cable of the
BBU3900 to the grounding bar on the surge protection box, and then route the PGND cable
from the surge protection box to the grounding bar in the cabinet.
Grounding Requirements of the RRU
l The green and yellow PGND cable of the RRU must be copper-based and plastic-insulated
with a cross-sectional area not less than 25 mm2.
l The grounding resistance of the RRU is less than 10 ohms.
NOTE
Refer toAntenna System User Guide for the grounding requirements of the RRU, antennas, and feeders in
different scenarios.
DBS3900
Site Preparation Guidelines 4 Grounding Requirements of the DBS3900
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
4-1
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
46/93
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
47/93
5 Transmission Requirements of the NodeBSite
This describes the transmission requirements of the NodeB. The transmission devices and
auxiliary devices must be prepared before the site construction. Transmission requirements of
the NodeB site consist of the requirements for the DDF/ODF and transmission mode.
Requirements for the DDF/ODF
The trunk cables and optical cables on the NodeB side are connected to the transmission device
through the DDF or ODF. The requirements for the DDF/ODF are listed as follows:
l The delivered transmission cables and connectors match the connectors on the DDF/ODF
on the transmission device side.
l Before you install the NodeB, the DDF/ODF is installed and external trunk cables or optical
cables are connected to the DDF/ODF.
l It is recommended that the copper wires be used to connect the DDF/ODF and the grounding
bar of the equipment room.
Requirements for the Transmission Mode
l Transmission resources must meet the upcoming requirements of the NodeB site and extra
resources must be reserved for capacity expansion.
l When RNCs and NodeBs are close to coverage of the Metropolitan Area Network (MAN)
or backbone network, they are directly connected to the networks through E1s or SDH
interfaces in ATM or IP transport mode. There are restrictions on the maximumtransmission distance for the trunk cables. Additional transmission devices are required if
the trunk cables are longer than the corresponding maximum transmission distance.
l If the NodeB is at the far end of the RNC and the MAN/backbone network, and is within
the Line of Sight (LOS) of microwave transmission, the microwave transmission is used.
The indoor units of the microwave transmission devices are installed in the reserved space.
l If the NodeB is at the far end of the RNC and the MAN/backbone network, and is not within
the LOS of microwave transmission, the xDSL transmission is used. It is recommended
that the devices for xDSL transmission be installed in the reserved space.
DBS3900
Site Preparation Guidelines 5 Transmission Requirements of the NodeB Site
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
5-1
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
48/93
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
49/93
6 Preparing Auxiliary Facilities for theDBS3900 Site
About This Chapter
This describes how to prepare the auxiliary facilities such as the cable rack, grounding bar, and
metal pole for the DBS3900 site. Before you install the DBS3900, the auxiliary facilities must
be prepared.
6.1 Installing the Cable Rack
This describes how to install the cable rack to facilitate the cable routing. The cable rack consists
of the cable ladders and cable troughs. The cable trough is optional and installed on the cableladder.
6.2 Installing the Grounding Bar of the NodeB
This describes how to install the grounding bar that is used to connect the PGND cables of the
NodeB cabinet.
6.3 Preparing the Metal Pole
This describes how to prepare the metal pole on which you can secure the RRU and APM30
when launching a site on the rooftop.
DBS3900
Site Preparation Guidelines 6 Preparing Auxiliary Facilities for the DBS3900 Site
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
6-1
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
50/93
6.1 Installing the Cable Rack
This describes how to install the cable rack to facilitate the cable routing. The cable rack consistsof the cable ladders and cable troughs. The cable trough is optional and installed on the cable
ladder.
6.1.1 Introduction to Cable Racks
For overhead cabling, a cable rack is required for cable installation in the equipment room. A
cable rack consists of a cable ladder and a cable trough(s). Cable troughs, however, are optional.
6.1.2 Procedure for Installing the Cable Rack
This describes the procedure for installing the cable rack. The procedure for installing the cable
rack consists of installing the outdoor cable rack, connecting the cable ladders, installing the
cable troughs, and installing the accessories.
6.1.3 Installing the Outdoor Cable Rack
An outdoor cable rack can be installed on the floor or on the wall.
6.1.4 Connecting Cable Ladders
In actual installations, you may need to dock two cable ladders, to connect the cable ladders or
cable troughs in a T shape, to connect the cable ladder to the wall, or to lay the cable ladder
upwards or downwards. For details on how to connect the cable ladders, refer to the
corresponding topic.
6.1.5 Installing the Cable Trough
This topic describes how to connect and install the cable troughs.
6.1.6 Installing AccessoriesDuring the installation of the cable rack, the required accessories are the cable manager, end
cover, bushing, and baffle ring.
6.1.1 Introduction to Cable Racks
For overhead cabling, a cable rack is required for cable installation in the equipment room. A
cable rack consists of a cable ladder and a cable trough(s). Cable troughs, however, are optional.
Specifications
Select the cabling troughs by observing the following rules:
l For a 200-mm wide cabling ladder, use a 200-mm wide cabling trough.
l For a 400-mm wide cabling ladder, use a 400-mm wide cabling trough.
l For a 600-mm wide cable ladder, use a 400-mm wide cable trough and a 200-mm wide
cable trough.
The cable ladder is 2,500 mm long and the cable trough is 2,000 mm long.
Items
Table 6-1 shows the items required for mounting a cable rack.
6 Preparing Auxiliary Facilities for the DBS3900 Site
DBS3900
Site Preparation Guidelines
6-2 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
51/93
Table 6-1 Items required for mounting a cable rack
Figure 6-1 Cable ladder Figure 6-2 U-shape connecting piece
Figure 6-3 Bracket angle Figure 6-4 Cable manager
Figure 6-5 Triangular support Figure 6-6 Connecting clip
Figure 6-7 Fixing clip Figure 6-8 Cable trough
DBS3900
Site Preparation Guidelines 6 Preparing Auxiliary Facilities for the DBS3900 Site
Issue 01 (2008-04-30) Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
6-3
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
52/93
Figure 6-9 Bushing Figure 6-10 End cover
Figure 6-11 Rectangular frame Figure 6-12 U-steel
Figure 6-13 Over-cabinet support
6.1.2 Procedure for Installing the Cable Rack
This describes the procedure for installing the cable rack. The procedure for installing the cable
rack consists of installing the outdoor cable rack, connecting the cable ladders, installing the
cable troughs, and installing the accessories.
ProcedureStep 1 6.1.3 Installing the Outdoor Cable Rack
Step 2 6.1.4 Connecting Cable Ladders
Step 3 6.1.5 Installing the Cable Trough
Step 4 6.1.6 Installing Accessories
----End
6.1.3 Installing the Outdoor Cable Rack
An outdoor cable rack can be installed on the floor or on the wall.
6 Preparing Auxiliary Facilities for the DBS3900 Site
DBS3900
Site Preparation Guidelines
6-4 Huawei Proprietary and Confidential
Copyright Huawei Technologies Co., Ltd
Issue 01 (2008-04-30)
7/29/2019 DBS3900 Site Preparation Guidelines(V200_01)
53/93
Context
CAUTION
When you determine the location of the cable rack, place the rectangular frame correctly, as
shown in Figure 6-14.
Figure 6-14 Rectangular frame
6.1.3.1 Installing the Outdoor Cable Rack on the Floor
An outdoor cable rack can be installed on the floor if the cable rack cannot be mounted on the
wall.6.1.3.2 Installing the Outdoor Cable Rack on the Wall
This topic describes how to install an outdoor cable rack on the wall.
Installing the Outdoor Cable Rack on the Floor
An outdoor cable rack can be installed on the floor if the cable rack cannot be mounted on the
wall.
Procedure
Step 1 Based on the engineering design, determine the location of the cable rack.
Step 2 Determine the location of the rectangular frame and accordingly mark the positions of the drillingholes. Ensure that each segment of the cable ladder is supported by two rectangular frame