ADC DWM025AA User Manual

WiMax Optical Fiber Repeater 10W

Installation and Operation Manual

Remote Unit Host Unit

February 2008

Document No. 913011900 Rev. 1.1

Document No. 913011900 Rev. 1.0 Proprietary Document

WiMax Optical Fiber Repeater 10W Installation and Operation Manual

Copyright

All data and information contained in or disclosed by this document is confidential and
proprietary information of Unity Wireless Ltd and all rights therein are expressly reserved. By
accepting this material, the recipient agrees that this material and the information contained
therein is held in confidence and in trust and will not be used, copied, reproduced in whole or
in part, nor its Contents revealed in any manner to others, without the explicit written
permission of Unity Wireless Ltd.

Unity Wireless Ltd. Copyright© 2008, Unity Wireless Ltd.

Unity Wireless Ltd. reserves the right to change specifications without notice.

*All third-party trademarks are the properties of their registered owners.

Preface

This manual provides instructions for mounting, setting-up, and monitoring ADC OR
system.

The WiMax 10W Optical Fiber Repeater is used to enhance the performance of
Wimax networks by improving the coverage of the base station and increasing their
traffic.

As a result, the resources of the base station are utilized more efficiently.

In addition, ADC Optical fiber Repeater is a flexible and cost-effective solution that
enables the operator to provide cellular coverage without dependence on the original
cell site coverage area. It is an ideal way to achieve targeted coverage of remote
areas and ‘coverage holes’, and enables advanced coverage schemes, such as BTS
hoteling and distributed coverage for high data-rate networks.

A powerful feature provided enables monitoring and controlling the parameters of
each site from the other site (the Host unit can be controlled from the Remote unit
and vice-versa), using a dedicated channel outside the WiMax frequency band.

This channel is used also to synchronize the TDD frame between the Remote and
Host units.

ADC Repeater may be secured to an interior or exterior wall or attached to a
concrete slab.

Records of Changes

Revision Description Initiated by Date

1.0 Preliminary Release Ram Dishon November 2007

1.1 Update Ram Dishon February 2008

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Safety Information

This section describes the use of warnings, cautions, and notes in this manual. It is
the user’s responsibility to follow all safety instructions and regulations.

NOTE: Notes clarify issues.

CAUTION

This symbol indicates special CAUTION required in a
procedure. CAUTION signs prevent actions that may result in
equipment malfunction or damage.

WARNING

WARNING signs prevent actions that may result in harm to
personnel.

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FCC Part 15A Compliance Statement

This device complies with Part 15 Class A of the FCC rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.

These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate Radio Frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communication. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the users will be required to correct the interference at their
own expense.

CAUTION

Changes or Modifications not expressly approved by ADC
could void the user’s authority to operate the equipment.

For customer and technical support, contact

ADC Telecommunications, Inc.

P.O. Box 1101, Minneapolis, Minnesota 55440-1101

In U.S.A. and Canada: 1-800-366-3891

Outside U.S.A. and Canada: [phone]

Fax: [phone]

or send an e-mail to [e-mail]

WARRANTY

ADC Telecommunications, Inc. warrants its products as per agreement.

Exclusions

The warranty (as per the agreement) shall not apply to defects resulting from
improper or inadequate use, unauthorized modifications or misuse.

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Warranty Limitations

Under no circumstances will ADC Telecommunications, Inc. be liable in any way to
the user or any third party for damages, including any loss of profits, lost savings, or
other incidental or consequential damages arising out of the use, or inability to use,
the product.

System Measurement and Testing Warnings

WARNING

When installing equipment, always connect the grounding
cable first, only then connect the other cables.

When testing the units in the lab or during field installation,
always practice RF radiation safety rules. It is not
recommended for service or lab personnel to work closer
than two meters from the Remote unit antenna surfaces
when it is operating.

CAUTIONS

• Switch off the AC or DC power to the unit before
connecting or disconnecting any cable.

• Do not connect or disconnect any RF coaxial
connectors while power is applied to the Repeater.
Disconnect power first.

• Do not apply more than +10dBm of RF input power to
any RF port of the OR system, or irreversible damage
may occur.

• When measuring high power outputs, always verify
that the equipment input port is capable of handling
the expected output power.

• During lab or field tests, with power applied to the
Repeater, do not use any mobile transmitters in a
range of less than 10 meters from the unit. An
unexpectedly high RF power might appear at the
output ports, which might in turn damage the
measuring equipment connected to that port.

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Glossary

ALC Automatic Level Control

BDA Bi-Directional Amplifier

BT Bias T

BTS Base Transceiver Station

dB Decibel measurement of gain and loss

dBm Decibel measurement of power, related to 1mW

dBmO Decibel measurement of optical power, related to 1mWO

Ec Energy per chip received at the mobile's rake receiver

FWD Down-link from the donor base station to the mobile users,

synonym to DL

HPA High Power Amplifier

Io Interference

LNA Low Noise Amplifier

LPU Low Power Unit

M&C Monitoring and Control

MS Mobile Station

mW Milliwatt

NF Noise Figure

NOC Network Operating Center

OR Optical Repeater (Fiber)

PA Power Amplifier

RVS Up-link from the mobile users to the donor base station,

synonym to UL

Rx Receive

TDR Time-Domain Reflectometer

Tx Transmit

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Table of Contents

1 Introduction........................................................................................................... 1-1

1.1About ADC Optical Fiber Repeater (OR) ....................................................................................... 1-1

1.2OR System Description................................................................................................................. 1-2

1.2.1General Description .......................................................................................................... 1-2

1.2.2Major Advantages ............................................................................................................ 1-3

2 Installation Procedure............................................................................................ 2-1

2.1Pre-installation Procedures ............................................................................................................ 2-1

2.1.1Receiving and Inspecting the Repeater ............................................................................... 2-1

Required Tools and Test Equipment .......................................................................................... 2-3

2.2Run Sweep Test ........................................................................................................................... 2-3

2.3Host Unit Installation.................................................................................................................... 2-4

2.3.1Mount the Host Unit ......................................................................................................... 2-4

2.3.2Outside the BTS enclosure ................................................................................................ 2-4

2.3.3Inside the BTS enclosure................................................................................................... 2-4

2.3.4Prepare the Electrical Power Connections........................................................................... 2-4

2.4Optical Fiber Test......................................................................................................................... 2-5

2.4.1Power Up the Host Unit. ................................................................................................... 2-5

2.5Mount the Distribution Antennas ................................................................................................... 2-5

2.6Mount the Remote Unit................................................................................................................. 2-6

2.6.1Precautions ...................................................................................................................... 2-6

2.6.2Remote Unit Installation - General Instructions................................................................... 2-6

2.6.3Sealing and Weatherproofing............................................................................................. 2-6

2.6.4Remote Unit Mounting ..................................................................................................... 2-8

2.6.5Cables Connection............................................................................................................ 2-9

3 OR System Setup and Alignment .......................................................................... 3-1

3.1Connect To The Repeater .............................................................................................................. 3-1

3.2Set the System Parameters............................................................................................................. 3-5

3.2.1System Setup Instructions ................................................................................................. 3-6

3.2.2Remote Unit FWD Gain Optimization................................................................................ 3-6

3.2.3Host Unit RVS Gain Optimization ..................................................................................... 3-7

3.2.4Noise Rise Check ............................................................................................................. 3-7

4 Troubleshooting The OR System........................................................................... 4-1

4.1Troubleshooting ........................................................................................................................... 4-1

4.2LEDs........................................................................................................................................... 4-1

4.2.1LEDs Description ............................................................................................................. 4-1

Appendix A. Specifications.................................................................................................... 1

Host Unit Specifications ...............................................................................................................1

Remote Unit Specifications ..........................................................................................................2

Appendix B. Cables Connections and Pinout ......................................................................... 3

Host Unit AC Power Cable Pin-out.........................................................................................................3

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Remote Unit AC Power Cable Pin-out ................................................................................................... 4

Common Cables ...................................................................................................................................5

Grounding Cables. ......................................................................................................................5

RS232 Cable:..............................................................................................................................5

Appendix C. Accessories........................................................................................................ 6

Remote Unit Mounting Frame Dimensions....................................................................................6

Appendix D. Records ............................................................................................................. 7

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1 Introduction

1.1 About ADC Optical Fiber Repeater (OR)

ADC optical fiber repeater provides Up-link (RVS) and Down-link (FWD) cell

coverage extension. It serves as a sophisticated remote bi-directional
booster, sensing and re-amplifying the RF transmission in FWD (from the
base-station to the mobile users), and in RVS (from the mobile-users to the
base-station), concurrently. Coverage extension results in increasing traffic
through the base station, thus improving utilization of the Base Transceiver
Station (BTS) resources.

The WiMax system is an interactive, environment-sensitive network.
Optimization of this network involves above all - coverage control. Repeaters
in the WIMAX network are therefore highly interactive with the donor cell and
the neighboring cells, and require flexible tuning and control. Their
effectiveness depends highly on these and additional features.

The Repeater Transferred-Noise, as appearing at the input to the shared­donor Base Station receiver, has a detrimental effect on the cell capacity, as
shown in Figure 1-1.

Figure

1-1 Capacity loss vs. repeater noise

A new added feature enables monitoring and control of each site from the
other site, i.e. the Remote unit can be controlled from the Host unit and vice­versa.

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WiMax Optical Fiber Repeater 10W Installation and Operation Manual

Overall Unique Advantages

The OR product line shares unique features for exceptional coverage, low
impact on the cell, high controllability, and low maintenance cost. The Remote
unit is built of outdoor grade technology and a weather-proof unit, that
guarantees low Noise Figure (NF), high power efficiency, unique flexibility in
installation, and high reliability.

1.2 OR System Description

1.2.1 General Description

The ADC OR system consists of two units, a Host unit, installed close to the
BTS, and a Remote unit, installed in the remote site. This integrated structure
provides the advantage of easy installation and maintenance.

The Host Unit contains the following main units:

• Optical transceiver

• Signal processing and controller

• Power supply

Optical transceiver

The optical transceiver includes a transmitter and receiver units. The
transceiver converts the FWD RF signals into light wave signals, which are
then sent over optical fiber. The transceiver also reconverts the RVS light
waves signals back to RF.

The signals passing through the optical fiber include also the M&C signals.
This enables M&C of the Remote unit remotely from the Host and vice-versa.

Signal Processing and Controller

The RVS and FWD RF signals pass through the LPU, managed by the
internal control system. The control system sets signal power levels, filters,
and sets the selectable RF channels (if applicable).

A local connection to the system enables M&C of each settable component.
The control software is described in Chapter 3.

The system controller in the LPU is monitoring and logging all activity changes
and alarms.

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System status parameters are also combined and their summary indicated by
three LEDs on the repeater cabinet .

The Remote Unit contains the following main units:

• Optical Transceiver

• LPU (Low Power Unit)

•

Distribution front end

• System Power Supply

• Frequency Channelizer that selects the desired operating channel (if

applicable)

Distribution Front End

The distribution front end of the Remote unit consists of:

Duplexer

High Power Amplifier (HPA) for FWD signal

Low Noise Amplifier (LNA) for RVS signal

These are connected to the Distribution Tx/Rx antenna port. Both FWD and
RVS amplification channels are gain-controllable, to obtain the optimal link
balance with minimum noise introduction into the BTS.

1.2.2 Major Advantages

Exceptional Coverage

• Low system NF, with high gain, high linearity

Minimum Impact on Cell

•

Low NF

• Increased capacity, provided by the low NF

• Wide range gain control for performance optimization

Extremely High Reliability

• Outdoor structure (Remote Unit)

• Integrated electronics, internal built-in test

•

Automatic shut-down mechanism

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Exceptional Flexibility

• Easy installation

•

Easy maintenance with simple access to Repeater components

Automatic Level Control (ALC) for Power overload protection

ALC range of more than 35dB beyond the maximum output power is included
in the amplfing chains.

During normal operating conditions, the repeater system should not reach the
ALC level. The repeater should be “transparent” to the BTS power control and
should not affect this mechanism.

The system set-up should ensure that that maximum power of FWD and RVS
channels are below the ALC level.

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2 Installation Procedure

NOTE: Installing an OR requires a site plan, which is a document
defining the planned parameters of the cellular network. Parameters
include the channel number in use, desired Repeater’s coverage
area, gain settings, and antenna location. If necessary, consult your
network administrator for more information.

2.1 Pre-installation Procedures

2.1.1 Receiving and Inspecting the Repeater

CAUTION

Verify that the packages are complete and undamaged. If
the boxes appear damaged, do not open the shipment.

Never ship any unit without adequate packing!

Follow this procedure prior to installation:

1. Unpack the shipment box.

2. Verify the contents of the box against the packing list.

3. Inspect the OR units for possible damage.

The items in Table 2-1 are required for the installation. They are supplied
separately from the installation kit.

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