IFR COM-120C User Manual

6-17
SECTION 6
OPTIONS
6-9-4 TESTING A RECEIVER USING DIGITAL SIGNALING FORMATS
This procedure is an example for testing a Receiver using Digital Signaling Formats. In
this procedure, an RF signal is modulated with a POCSAG message.
o Press GEN Test Mode Key to access RF Generate Operation Screen.
o Enter Receiver frequency in RF Field.
o Select desired Output Connector for output of signal. If Receiver is tested with
direct connection, connect Receiver Input Connector to selected Output Connector.
Otherwise, connect antennas to selected Output Connector and Receiver Input
Connector.
o Set Output Level to desired level.
o Select DATA Generator for Modulation Source.
o Set Modulation Type to FM.
o Set Deviation Level for 4.0 kHz or as required.
o Set DATA Generator Format for POCSAG or POCSAG/.
o Press F4 Config.
o Set Data Rate to required setting for Receiver.
o Set Capcode Range to Receiver Capcode.
o Set POCSAG Function for desired test function.
o Press F6 RETURN.
o Press F5 BURST.
o Verify Receiver receives signal and decodes POCSAG Message correctly.

IFR COM-120C Specifications

General

Resolution	1 Hz
RF Input Impedance	50 Ω
Third Order Intercept (TOI)	+10 dBm
Display Type	LCD
Display Resolution	640 x 480 pixels
RF Input Protection	1 W
Power Requirements	100-240 VAC, 50-60 Hz
Input VSWR	1.5:1
Phase Noise	-80 dBc/Hz @ 10 kHz offset

Summary

COM-120C Communications Service Monitor Operation Manual

Preface

Provides an overview of the manual's organization, scope, and intended audience.

Section 1: Introduction

Introduces the COM-120C, its functions, and basic operation modes.

Section 2: Installation

Provides information on preparing the COM-120C for use and operating precautions.

Section 3: Composite Controls

Details front and rear panel controls, screens, soft function keys, and menus for system interaction.

Section 4: Operation Procedures

Covers configuring and performing various operational tests like RF Generate, Receive, and Duplex modes.

Section 5: Common Practices

Offers suggestions for equipment and screen setups for common RF Generate and Receive practices.

Section 6: Options and Features

Describes optional features and accessories for the COM-120C, including testing capabilities.

Safety and Precautions

General Safety Warnings

Covers high voltage equipment hazards, servicing, case removal, and safety identification terms.

Battery Handling and ESD Precautions

Provides warnings for sealed lead-acid battery use and precautions for handling ESD-sensitive parts.

Appendix A: User I/O Connectors and Pin-Outs

Table of I/O Connectors

Details the connector names, types, signal direction, and signal types for COM-120C I/O ports.

Connector Pin-Out Tables

Provides specific pin assignments for MIC/ACC, GPIB, and RS-232 connectors.

Appendix B - Abbreviations

Soft Function Key Descriptions

An alphabetical reference for COM-120C soft function keys and their descriptions.

Appendix C - Repacking for Shipping

Shipping and Repacking Procedures

Details authorization, tagging, container requirements, freight costs, and step-by-step repacking instructions.

Index

Index-1

Alphabetical listing of topics and their corresponding page numbers for easy reference.