AAU3940
Hardware Description
Issue 03
Copyright © Huawei Technologies Co., Ltd. 2015. All rights reserved.
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About This Document
Overview
This document provides reference information for deploying AAU3940s (shortened to AAUs). Such information includes the AAU exterior, ports and indicators on an AAU, logical structure, engineering specifications, and cable types.
The exteriors of components or cables in this document are for reference only. The actual exteriors may be different.
Product Version
The following table lists the product versions related to this document.
Product Name Solution Version Product Version
DBS3900 l SRAN9.0 and later
versions
l RAN16.0 and later versions
l eRAN7.0 and later versions V100R009C00 and later versions
Intended Audience
l System personnel l Installation engineers l Maintenance engineersOrganization
An AAU3940 is a wideband FDD RF module that integrates the antenna and RF module. An AAU3940 supports the LTE only (LO) mode when operating in 1.8 GHz and supports the UMTS and LTE modes when operating in 2.1 GHz.
3 Optical Module
An optical module transmits optical signals between an optical port and a fiber optic cable.
4 AAU Cables
This section describes AAU cables.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Description
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to personal injury.
Calls attention to important information, best practices and tips.
NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.
General Conventions
The general conventions that may be found in this document are defined as follows.
Convention Description
Times New Roman Normal paragraphs are in Times New Roman.
Boldface Names of files, directories, folders, and users are in boldface. For example, log in as user root.
Convention Description
Italic Book titles are in italics.
Courier New Examples of information displayed on the screen are in
Courier New.
Command Conventions
The command conventions that may be found in this document are defined as follows.
Convention Description
Boldface The keywords of a command line are in boldface.
Italic Command arguments are in italics.
[ ] Items (keywords or arguments) in brackets [ ] are optional.
{ x | y | ... } Optional items are grouped in braces and separated by
vertical bars. One item is selected.
[ x | y | ... ] Optional items are grouped in brackets and separated by
vertical bars. One item is selected or no item is selected.
{ x | y | ... }* Optional items are grouped in braces and separated by
vertical bars. A minimum of one item or a maximum of all items can be selected.
[ x | y | ... ]* Optional items are grouped in brackets and separated by
vertical bars. Several items or no item can be selected.
GUI Conventions
The GUI conventions that may be found in this document are defined as follows.
Convention Description
Boldface Buttons, menus, parameters, tabs, window, and dialog titles are in boldface. For example, click OK.
> Multi-level menus are in boldface and separated by the ">"
signs. For example, choose File > Create > Folder.
Keyboard Operations
Format Description
Key Press the key. For example, press Enter and press Tab.
Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl +Alt+A means the three keys should be pressed concurrently.
Key 1, Key 2 Press the keys in turn. For example, pressing Alt, A means the two keys should be pressed in turn.
Mouse Operations
The mouse operations that may be found in this document are defined as follows.
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.
Contents
About This Document...ii
1 Changes in AAU3940 Hardware Description... 1
2 AAU Introduction...3
2.1 Exterior... 4
2.2 Ports and Indicators... 4
2.3 Logical Structure... 7
2.4 Engineering Specifications... 8
3 Optical Module... 10
4 AAU Cables... 12
4.1 Cable List...13
4.2 PGND Cable and Equipotential Cable for an AAU... 14
4.3 AAU Power Cables... 15
4.4 CPRI Fiber Optic Cables... 17
1
Changes in AAU3940 Hardware
Description
This chapter describes the changes in AAU3940 Hardware Description.03 (2015-12-30)
This is the third commercial release.
Compared with issue 02 (2015-05-30), no information is added to or deleted from this issue. Compared with issue 02 (2015-05-30), this issue includes the following changes.
Topic Change Description
2.2 Ports and Indicators Added the power cable connectors of the DC AAU.
2.4 Engineering Specifications Added the input power specifications of the DC AAU.
4.1 Cable List Added DC AAU cables.
4.3 AAU Power Cables Added DC AAU power cables.
02 (2015-05-30)
This is the second commercial release.
Compared with issue 01 (2015-01-15), no information is added to or deleted from this issue. Compared with issue 01 (2015-01-15), this issue includes the following changes.
Topic Change Description
2.4 Engineering Specifications Added the 110V AC dual-phase input power specification.
Topic Change Description
4.3 AAU Power Cables Added the 110V AC dual-phase power cable.
01 (2015-01-15)
This is the first commercial release.
Compared with issue Draft A (2014-10-30), no information is added to or deleted from this issue.
Compared with issue Draft A (2014-10-30), this issue includes the following changes.
Topic Change Description
Entire document Some figure updates caused by the structure
modification of the AAU.
Draft A (2014-10-30)
This is a draft.
2
AAU Introduction
About This Chapter
An AAU3940 is a wideband FDD RF module that integrates the antenna and RF module. An AAU3940 supports the LTE only (LO) mode when operating in 1.8 GHz and supports the UMTS and LTE modes when operating in 2.1 GHz.
2.1 Exterior
This section describes the AAU exterior. 2.2 Ports and Indicators
This section describes the ports and indicators on an AAU. 2.3 Logical Structure
An AAU integrates the antenna and RF unit, and its main functional modules include an antenna unit (AU), radio units (RUs), and a power module.
2.4 Engineering Specifications
This section describes AAU engineering specifications, including input power specifications, equipment specifications, and surge protection specifications.
2.1 Exterior
This section describes the AAU exterior. The following figure shows the AAU exterior. Figure 2-1 AAU exterior
2.2 Ports and Indicators
This section describes the ports and indicators on an AAU.
The following figure shows the ports and indicators on an AAU. Table 2-1 and Table 2-2
describe the ports and indicators, respectively.
Figure 2-2 Ports and indicators on an AAU
Ports
The following table describes the ports on an AAU. Table 2-1 Ports on an AAU
No. Silkscreen Connector Description
1 CPRI1 DLC
connector
Optical port 1 with a maximum data rate of 9.8 Gbit/s for connecting a BBU
2 CPRI0 DLC
connector
Optical port 0 with a maximum data rate of 9.8 Gbit/s for connecting a BBU
3 POWER-IN l AC AAU: tool-less female connector (pressfit type) l DC AAU: EPC4 connector
Power input port for connecting power equipment
Indicators
The following table describes the indicators on an AAU.
Table 2-2 Indicators on an AAU No . Silksc ree n Colo r Status Description 4 RU N Gree n
Steady on There is power supply, but the module is faulty.
Steady off There is no power supply, or the module is faulty.
Blinking (on for 1s and off for 1s)
The module is functioning properly. Blinking (on for
0.125s and off for 0.125s)
Software is being loaded to the module, or the module is not started.
AL M
Red Steady on Alarms are generated, and the module must be
replaced. Blinking (on for
1s and off for 1s)
Alarms are generated. The alarms may be caused by faults on related boards or ports. Therefore, locate the fault before deciding whether to replace the module.
Steady off No alarm is reported.
AC T
Gree n
Steady on The module is functioning properly with TX
channels enabled or the software is being loaded with the module not running.
Blinking (on for 1s and off for 1s)
The module is functioning properly with TX channels disabled. CP RI0 Red or green
Steady green The CPRI link is functioning properly.
Steady red An optical module fails to receive signals
because the optical module may be faulty or the fiber optic cable may be broken.
Blinking red (on for 1s and off for 1s)
The CPRI link is out of lock because clock locking between two modes may fail or the data rates of optical modules do not match those of CPRI ports.
Steady off The SFP module cannot be detected, or the
optical module is powered off. CP
RI1 Red or green
Steady green The CPRI link is functioning properly.
Steady red An optical module fails to receive signals
because the optical module may be faulty or the
No . Silksc ree n Colo r Status Description
Blinking red (on for 1s and off for 1s)
The CPRI link is out of lock because clock locking between two modes may fail or the data rates of optical modules do not match those of CPRI ports.
Steady off The SFP module cannot be detected, or the
optical module is powered off.
2.3 Logical Structure
An AAU integrates the antenna and RF unit, and its main functional modules include an antenna unit (AU), radio units (RUs), and a power module.
The following figure shows the logical structure of an AAU. Figure 2-3 Logical structure of an AAU
An AAU performs the following functions:
l Receives downlink baseband data from the BBU and sends uplink baseband data to the BBU.
l On the RX channel, receives RF signals through feeders, down-converts the RF signals into IF signals, amplifies them, and performs analog-to-digital conversion (ADC). On the TX channel, filters signals, performs digital-to-analog conversion (DAC), and up-converts the RF signals to the TX band.
l Multiplexes RX and TX signals on the RF channel, which enables these signals to share the same antenna path. It also filters the RX and TX signals.
The following table describes functional modules of an AAU. Table 2-3 Functional modules of an AAU
Functional
Module Function
AU An AU functions as an antenna and a remote electrical tilt (RET).
An AU has a built-in remote control unit (RCU) that receives control signals from the base station and drives the stepper motor. The stepper motor drives the adjustable phase shifter in the AU through a gear to adjust downtilts of the AU, thereby achieving the RET function.
RU An RU is a radio frequency unit, and it performs the following functions:
l Receives downlink baseband data from the BBU and sends uplink baseband data to the BBU.
l Receives RF signals from the antenna system, down-converts the received signals to IF signals, amplifies the IF signals, and performs ADC. The TX channel filters downlink signals, performs DAC, and up-converts RF signals to the TX band.
l Multiplexes RX and TX signals on the RF channel, which enables these signals to share the same antenna path. It also filters the RX and TX signals.
Power module A power module provides power for the AU and RU.
2.4 Engineering Specifications
This section describes AAU engineering specifications, including input power specifications, equipment specifications, and surge protection specifications.
Input Power Specifications
The following table lists the input power specifications of an AAU. Table 2-4 Input power specifications
Item Specifications Input
power (AC)
220 V AC; voltage range: 176 V AC to 290 V AC
110 V AC dual-live-wire; voltage range: 90 V/180 V AC to 135 V/270 V AC
Equipment Specifications
The following table lists the equipment specifications of an AAU. Table 2-5 Equipment specifications
Item Specifications Dimensio ns (Height x Diameter) 750 mm (29.53 in.) x 150 mm (5.91 in.)
Weight 15 kg (33.07 lb) (without the mounting kit and attachment plate)
Surge Protection Specifications
The surge protection specifications of an AAU are 10 kA in differential mode and 20 kA in common mode.
NOTE
For details about other engineering specifications of an AAU, see section "AAU3940 Technical Specifications" in 3900 Series Base Station Technical Description.
3
Optical Module
An optical module transmits optical signals between an optical port and a fiber optic cable.NOTE
l The exteriors of an optical module and the label on an optical module in this section are for reference only. The actual exteriors may be different.
l Boards or RF modules supporting only the 1.25 Gbit/s CPRI port rate, for example, the GTMU or RRU3908 V1, cannot use optical modules supporting a 9.8 Gbit/s CPRI port rate.
l Huawei wireless equipment can only use optical modules that have been certified by Huawei Wireless Product Line. These optical modules must comply with the following standards and requirements:
l Specifications required by products in specific application scenarios l Laser safety standards of IEC 60825-1
l General safety requirements of IEC 60950-1
l For the codes of SFP and QSFP optical modules that have been certified by Huawei Wireless Product Line, see Spare Parts Catalog.
Exterior
The following figure shows the exterior of an optical module.
Figure 3-1 Exterior of an optical module
a: Optical module b: Bidirectional optical module
Label on an Optical Module
There is a label on each optical module, which provides information such as the rate, wavelength, and transmission mode, as shown in the following figure.
Figure 3-2 Label on an optical module
(1) Rate (2) Wavelength (3) Transmission mode
Optical Module Type
Optical modules can be divided into single- and multimode optical modules, which can be distinguished as follows:
l The puller of a single-mode optical module is blue and the puller of a multimode optical module is black or gray.
l The transmission mode is displayed as "SM" on the label of a single-mode optical module and "MM" on the label of a multimode optical module.
4
AAU Cables
About This Chapter
This section describes AAU cables. 4.1 Cable List
AAU cables mainly include a PGND cable, a power cable, and a CPRI fiber optic cable. 4.2 PGND Cable and Equipotential Cable for an AAU
This section describes the exteriors and specifications of the PGND cable and equipotential cable for an AAU.
4.3 AAU Power Cables
This section describes AAU power cables, which feed AC or DC power from power equipment into AAUs.
4.4 CPRI Fiber Optic Cables
CPRI fiber optic cables are classified into multimode fiber optic cables and single-mode fiber optic cables. They transmit CPRI signals.
4.1 Cable List
AAU cables mainly include a PGND cable, a power cable, and a CPRI fiber optic cable.
Table 4-1 and Table 4-2 list AC AAU cables and DC AAU cables, respectively.
Table 4-1 AC AAU cables
Cable One End The Other End
Connector Installation
Position Connector InstallationPosition
AAU PGND cable OT terminal (M6) Primary ground terminal for an AAU OT terminal (M8) External ground busbar AAU equipotential cable OT terminal (M6) Primary ground terminal for an AAU OT terminal (M6) Secondary ground terminal for an AAU AC AAU power cable (with an ODM) Tool-less female connector (pressfit type) POWER-IN port Cord end terminal OUTPUT port on the ODM AC AAU power cable (without an ODM) Tool-less female connector (pressfit type) POWER-IN port Depending on external power equipment External power equipment 4.4 CPRI Fiber Optic Cables (with an ODM) DLC connector CPRI0 or CPRI1 port FC connector, SC connector, or DLC connector CPRI output port on the ODM 4.4 CPRI Fiber Optic Cables (without an ODM) DLC connector CPRI0 or CPRI1 port on the AAU DLC connector CPRI port on the BBU
Table 4-2 DC AAU cables
Cable One End The Other End
Connector Installation
Position Connector InstallationPosition
AAU PGND cable OT terminal (M6) Primary ground terminal for an AAU OT terminal (M8) External ground busbar
Cable One End The Other End Connector Installation
Position Connector InstallationPosition
AAU equipotential cable OT terminal (M6) Primary ground terminal for an AAU OT terminal (M6) Secondary ground terminal for an AAU DC AAU power cable EPC4 connector POWER-IN port Depending on external power equipment External power equipment 4.4 CPRI Fiber Optic Cables DLC connector CPRI0 or CPRI1 port on the AAU DLC connector CPRI port on the BBU
4.2 PGND Cable and Equipotential Cable for an AAU
This section describes the exteriors and specifications of the PGND cable and equipotential cable for an AAU.
AAU PGND Cable
An AAU PGND cable connects an AAU and a ground bar for proper grounding of the AAU. The following figure shows its exterior.
Figure 4-1 Exterior of an AAU PGND cable
(1) OT terminal (M6, 16 mm2 or 0.025 in.2) (2) OT terminal (M8, 16 mm2 or 0.025 in.2)
NOTE
If the customer prepares the PGND cable, a copper-core cable with a cross-sectional area of 16 mm2 (0.025
in.2) or greater is recommended.
AAU Equipotential Cable
An AAU equipotential cable connects two AAUs to ensure equipotential bonding between
Figure 4-2 Exterior of an AAU equipotential cable
(1) OT terminal (M6, 16 mm2 or 0.025 in.2)
NOTE
If the customer prepares the equipotential cable, a copper-core cable with a cross-sectional area of 16 mm2
(0.025 in.2) or greater is recommended.
4.3 AAU Power Cables
This section describes AAU power cables, which feed AC or DC power from power equipment into AAUs.
Exterior
The following figures show the exteriors of AAU power cables. NOTE
The colors and structures of cables vary according to countries and regions. If cables are purchased locally, the cables must comply with local rules and regulations.
Figure 4-3 AAU power cable used in 220 V AC scenarios
(1) Tool-less female connector (pressfit type)
Figure 4-4 AAU power cable used in 110 V AC dual-live-wire scenarios
(1) Tool-less female connector (pressfit type)
Figure 4-5 AAU power cable used in DC scenarios
(1) EPC4 connector
Description
The following table describes AAU power cables. Table 4-3 AAU power cables
Cable Exterior Wire Wire Color Cable
Specifications
Figure 4-3 L wire Brown 1.5 mm2 (0.002 in.2)
to 2.5 mm2 (0.004
in.2)
N wire Blue 1.5 mm2 (0.002 in.2)
to 2.5 mm2 (0.004
in.2)
Cable Exterior Wire Wire Color Cable
Specifications
Figure 4-4 L1 wire Black 1.5 mm2 (0.002 in.2)
to 2.5 mm2 (0.004
in.2)
L2 wire Red 1.5 mm2 (0.002 in.2)
to 2.5 mm2 (0.004
in.2)
N wire White 1.5 mm2 (0.002 in.2)
to 2.5 mm2 (0.004
in.2)
PE wire Green 1.5 mm2 (0.002 in.2)
to 2.5 mm2 (0.004
in.2)
Figure 4-5 RTN(+) wire Black 3.3 mm2 (0.005 in.2)
to 4.0 mm2 (0.006
in.2)
NEG(-) wire Blue 3.3 mm2 (0.005 in.2)
to 4.0 mm2 (0.006
in.2)
4.4 CPRI Fiber Optic Cables
CPRI fiber optic cables are classified into multimode fiber optic cables and single-mode fiber optic cables. They transmit CPRI signals.
A multimode fiber optic cable connects a BBU to an AAU or connects two AAUs. A
multimode fiber optic cable connecting a BBU and an AAU is 150 m (492.13 ft) long at most. A single-mode fiber optic cable is made by connecting a single-mode pigtail and a trunk single-mode fiber optic cable through an outdoor distributed module (ODM). A single-mode pigtail is 20 m (65.62 ft) and 70 m (229.66 ft) long at most on the BBU and AAU sides, respectively.
NOTE
l An ODM interconnects a single-mode pigtail and a trunk single-mode fiber optic cable.
l The trunk single-mode fiber optic cables are provided by the customer and must comply with the ITU-T G.652 standard.
l A multimode fiber optic cable and a single-mode fiber optic cable are connected to a multimode optical module and a single-mode optical module, respectively.
Exterior
Multimode fiber optic cable: The multimode fiber optic cable has a DLC connector at each end, as shown in the following figure.
Figure 4-6 Multimode fiber optic cable
(1) DLC connector (2) Breakout cable (3) Label on the breakout cable
NOTE
l When a multimode fiber optic cable connects a BBU and an AAU, the breakout cable on the BBU side is 0.34 m (13.39 in.) and the breakout cable on the AAU side is 0.03 m (1.18 in.).
l When a multimode fiber optic cable connects two AAUs, the breakout cable on both sides is 0.03 m (1.18 in.).
The following figure shows the connection of a multimode fiber optic cable between a BBU and an AAU.
Figure 4-7 Connection of a multimode fiber optic cable between a BBU and an AAU
(1) Multimode fiber optic cable between a BBU and an AAU
Single-mode pigtail: The single-mode pigtail has a DLC connector at one end and an FC, LC, or SC connector at the other end, as shown in the following figure.
Figure 4-8 Single-mode pigtail (1) DLC connector (2) Breakout cable (3) Label on the breakout cable (4) FC connector (5) LC connector (6) SC connector NOTE
l When a single-mode pigtail connects a BBU and an ODM, the breakout cables on the BBU side and ODM side are 0.34 m (13.39 in.) and 0.8 m (31.50 in.), respectively.
l When a single-mode pigtail connects an ODM and an AAU, the breakout cables on the AAU side and ODM side are 0.03 m (1.18 in.) and 0.8 m (31.50 in.), respectively.
The following figure shows the connection of a single-mode pigtail.
Figure 4-9 Connection of a single-mode pigtail
(1) Single-mode pigtail between a BBU and an ODF (2) Single-mode pigtail between an ODF and an AAU
(3) Singlemode pigtail between an ODM and an AAU
-Selection Principle
The following table describes the principles for selecting CPRI fiber optic cables. Table 4-4 Principles for selecting CPRI fiber optic cables
Remote
Distance Selection Principle Remarks Less than or
equal to 100 m (328.08 ft)
Multimode fiber optic cable Connects a BBU and an AAU
When it connects two AAUs, the distance between the two AAUs must be less than or equal to 10 m (32.81 ft).
Greater than 100 m (328.08 ft) and less than or equal to 150 m (492.12 ft)
Multimode fiber optic cable Connects a BBU and an AAU
Recommended: single-mode fiber optic cable (single-mode pigtail and trunk single-mode fiber optic cable)
The single-mode pigtail on the BBU or AAU side is connected to the trunk single-mode fiber optic cable using an ODM.
Remote
Distance Selection Principle Remarks Greater than
150 m (492.12 ft)
Single-mode fiber optic cable (single-mode pigtail and trunk single-mode fiber optic cable)
Pin Assignment
The following table describes the labels on and recommended connections for the breakout cables of a CPRI fiber optic cable.
Table 4-5 Labels on and recommended connections for the breakout cables of a CPRI fiber optic cable
Label Installation Position Multimode Fiber Optic Cable Between a BBU or an ODF and an AAU Multimode Fiber Optic Cable Between Two AAUs Single-Mode Pigtail (Interconnected by an ODM)
1A CPRI RX port on the
AAU
CPRI RX port on AAU 1
RX port on the BBU or CPRI RX port on the AAU
1B CPRI TX port on the
AAU
CPRI TX port on AAU 1
TX port on the BBU or CPRI TX port on the AAU 2A ODM or TX port on the BBU CPRI TX port on AAU 0 ODM 2B ODM or RX port on the BBU CPRI RX port on AAU 0 ODM
