Nortel CTR 38 GHz Installation Manual

Reunion

CTR 38 GHz

Sub-Band 38-02P
Outdoor Microwave Transceiver
Installation Guide

Release 1.2 March 1999

411-1333-205

Reunion

CTR 38 GHz

Outdoor Microwave Transceiver
Installation Guide

Document number: 411- 1333 - 205.01.02
Product release: Release 1.2
Document version: Preliminary
Date: March 1999

Copyright Country of printing Confidentiality Legal statements Trademarks



1999 Northern Telecom

Northern Telecom Ltd., all rights reserved

Printed in Canada

NORTHERN TELECOM CONFIDENTIAL:

The information contained in this document is the property of Northern
Telecom. Except as specifically authorized in writing by Northern Telecom, the holder of this document shall keep the information
contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third parties and use
same for evaluation, operation, and maintenance purposes only.

Information is subject to change without notice.

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Reunion CTR 38 Ghz Installation Guide

Publication history

December 1998

• Draft release of the document

• Information subject to change without notice

March 1999

• Preliminary release of the document

• Information subject to change without notice

vi

411-1333-205.01.02 Preliminary March 1999

vii

Reunion CTR 38 Ghz Installation Guide

About this guide

Purpose

This guide provides the information required to install and operate the
CTR 38 Ghz outdoor microwave transceiver.

The CTR 38 Ghz is one of the Radio Frequency (RF) products that constitute
a Nortel Networks Reunion product line. The associated products include the
following types of cell site equipment:

• broadband transmitters

• broadband receivers

• broadband repeaters

• broadband transceivers

Audience

The audience for this document are those who install and operate the
CTR 38 Ghz. To take full advantage of this guide, you should have a basic
understanding of microwave fundamentals and know how to use microwave
test equipment.

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411-1333-205.01.02 Preliminary March 1999

Organization

This Guide is divided into seven sections:

• Product Overview describes the CTR 38 Ghz’s components and theory of
operation.

• Pre-Instalation describes the basics of handling the equipment upon
arrival.

• Reunion Safety Standards provide a quick review of general safety
guidelines.

• Installing the CTR 38 Ghz explains how to physically install the
transceiver.

• CTR 38 GHz Maintenance describes basic maintenance procedures to
ensure that the transceiver is operating correctly.

• CTR 38 GHz Diagnostic Reference Chart provides a quick
troubleshooting guide.

• Grounding and Surge Protection explains basic grounding and lightening
protections requirements and methods for the Reunion equipment.

• List of terms provides a quick reference to terms and acronyms found in
the guide.

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Reunion CTR 38 Ghz Installation Guide

Documentation Suite

This Reunion Release has a suite of fifteen documents:

Reunion System Overview, 411- 1343 - 010
Reunion Network Node Equipment Installation Guide, 411- 1313 - 200
Reunion NIU 6054 Network Interface Unit Installation Guide,

Release 1.2, 411- 1323 - 201
Reunion NIU 6154 Network Interface Unit Installation Guide,

Release 1.2, 411- 1323 - 202
Reunion NIU 5008 Network Interface Unit Installation Guide,

Release 1.2, 411- 1323 - 203
Reunion BTR 28 GHz Outdoor Microwave Transceiver Installation Guide,

Release 1.2, 411- 1333 - 202
Reunion CTR 28 GHz Outdoor Microwave Transceiver Installation Guide,

Release 1.2, 411- 1333 - 203
Reunion BTR 38 GHz Outdoor Microwave Transceiver Installation Guide,

Release 1.2, 411- 1333 - 204
Reunion CTR 38 GHz Outdoor Microwave Transceiver Installation Guide,

Release 1.2, 411- 1333 - 205
Reunion Redundancy Switching Matrix Installation Guide, Release 1.2,

411- 1313 - 201

Reunion Procedures Reference Manual, 411-1343-400
DSS for the NNE User Guide, 411-1343-501
Reunion DSS 1000 for the NIU 6054 User Guide, 411-1343-502
Reunion DSS 1000 for the NIU 6154 User Guide, 411-1343-503
Reunion DSS 1000 for the NIU 5008 User Guide, 411-1343-504

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411-1333-205.01.02 Preliminary March 1999

Customer Support

In addition, Nortel Networks Broadband W ireless Access (BWA) provides
24-hour customer service and technical support to ensure your service operation
is trouble-free. If you have questions or need technical support, contact Nortel
Networks Broadband Wireless Access at the following telephone numbers:

• In the USA and Canada, call 972-BWA-ETAS/972-292-3827

• Fax [phone]

Write Nortel Networks at:

• Nortel Networks
Broadband Wireless Access

14 Fultz Blvd.
Winnipeg, Manitoba R3Y 1V3
Canada

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CTR 38 Ghz Installation Guide

Contents

Publication history v
About this guide vii

Purpose vii
Audience vii
Organization viii
Documentation Suite viii
Customer Support ix

Contents xi

CTR 38 GHz Release 1.2 1-1

Product Overview 1-1
How the CTR 38 GHz Works 1-2
CTR 38 GHz Specification 1-4
CTR 38 GHz Component Descriptions 1-6

Diplexer / Power Supply 1-6
Mixer 1-6
Dielectric Resonance Oscillator (DRO) 1-6
Isolator 1-6
Bandpass Filter 1-6
Low Noise Amplifier 1-7
Power Amplifier 1-7
Duplexer 1-7
Antenna 1-7

Pre-Installation 1-8

Prevention of Access 1-8
Unpacking Shipment 1-8

Reunion Safety Standards 1-9

Safety Disclaimer 1-9
General Safety 1-9
Electrical Safety 1-9

Installing the CTR 38 GHz 1-10

Mounting Bracket Assembly 1-10
Installing the Tower Equipment 1-11
Installing Indoor Equipment (NIU 5008 only) 1-12
Installing Indoor Equipment (NIU 6054 only) 1-13

CTR 38 GHz Maintenance 1-20

Mechanical Checks 1-20

CTR 38 GHz Diagnostic Reference Chart 1-21

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411-1333-205.01.02 Preliminary March 1999

Grounding and Surge Protection 2-1

Grounding/Lightning Protection 2-1

Scope 2-1
Grounding Methods/Indoor Equipment 2-1
Wire Gauge Guidelines 2-2
Outdoor Equipment: the need for surge (lightning) protection 2-3
Ground connections to outdoor equipment 2-7
Regulatory Considerations 2-10

List of terms 3-1

1-1

Reunion CTR 38 GHz Installation Guide

1CTR 38 GHz Release 1.2

Product Overview

The CTR 38 GHz outdoor transceiver is a customer premise transceiver
designed to operate in the Receiver (RX) 39.45 to 3 9.65 GHz and Transmitter
(TX) 38.75 to 38.95 GHz frequency bands. It is a Nortel Reunion product
which operates in conjunction with base station products. It is compatible

with Reunion’s Release 1.2 equipment.
The CTR 38 GHz transceiver is mounted on a pole or a building. It features a

small size and low noise characteristics. The combination of digital
modulation and low-loss mounting results in an efficient and low-cost
installation. It has a high-stability reference oscillator.

The CTR 38 GHz features the following attributes:

• light-weight and compact packaging designed for mounting outdoors

• solid-state upconverter and downconverter designs

• high frequency stability over a wide temperature range

• standard 18 VDC input for use around the world

The transceiver comprises the following components:

•diplexer

• power supply

•mixers

• local oscillator

•isolators

• bandpass filters

• low noise amplifier (LNA)

• power amplifier

• duplexer

• antenna

1-2 CTR 38 GHz Release 1.2

411-1333-205.01.02 Preliminary March 1999

Figure 1-1
CTR 38 GHz Block Diagram

How the CTR 38 GHz Works

This section provides an overview of the theory of operation for the CTR 38
GHz outdoor transceiver.

Its installation on a pole or building enhances transmitting and receiving
capabilities by avoiding the need for long expensive waveguide runs. This
technique minimizes the power loss from waveguide attenuation, which
results in a highly eff icient, compact and cost-effecti ve inst allation. Minimum
maintenance is required.

The high-stability reference oscillator ensures that the transmitter and
receiver remain on frequency over a wide operating range.

The radio uses a common input cable to carry the 18 VDC and transmit
intermediate frequency (IF) signals. The DC power supply and the IF signals
are separated by the diplexer in the radio. The radio uses a common antenna
for both the transmit and receive microwave signals.

18 VDC

Diplexer

12 VDC

TX Filter P. Amp. TX Filter

Antenna

Duplexer

RX FilterLNARX Filter

VHF-AMP

IF Output

DRO

Mixer

Mixer

LO Test Port

IF/PS Input

Power Supply

CTR 38 GHz Release 1.2 1-3

Reunion CTR 38 GHz Installation Guide

1. The CTR transceiver’ s input coaxial cable carries the IF signals and the 18
VDC power supply to the diplexer. The diplexer distributes the DC po wer
to the power supply unit and interfaces with the mixer for the IF signals.

2. The 450-650 MHz transmit IF signals enter the mixer which upconverts
the signals to the 38.75 to 38.95 GHz band for the transmit path. The
received 39.45 to 39.65 GHz RF band is downconverted to a receive
signal in the 50-250 MHz range.

3. The local oscillator (LO) provides loc al oscilla tor signal to t he mix er. The
LO uses a phase-locked dielectric resonance oscillator (DRO) with an
oven controlled crystal oscillator (OCXO).

4. The bandpass filters remove the undesired sideband signals, in both the
transmit and receive paths.

5. The upconverted signal is fed into the po wer amplif ier which pro vides the
required gain to the microwave signals. The power amplifier output is
connected to the antenna through the filter and duplexer.

6. The received RF simultaneously passes through the antenna, the band
pass filter , the Lo w Noise Amplif ier (LN A), and enters the do wncon v erter
mixer .

There are three connectors on the outside of the transceiver case:

• The IF (TX) and power supply input uses a Type N female jack

• The IF (RX) output uses a Type N female jack

• Test Port uses SMA jack