IFR COM-120C User Manual

4-68
SECTION 4
OPERATION
4-6-4 DTMF GENERATOR OPERATION
Configure and operate Data Generator as
follows:
DTMF
Toggles DTMF Generator ON and OFF.
o Press F1 to clear code field of current
data.
o Enter desired Mark Time for DTMF tones.
Range is 25 to 99 msec.
o Enter desired Space Time for DTMF tones.
Range is 25 to 99 msec.
o Enter desired Pause Time for DTMF tones.
Range is 25 to 99 msec.
Set Level attenuation as follows:
X1
Selects X1 (times 1) level attenuation.
/10
Selects /10 (divide by 10) level attenuation.
O
T
e
n
Level selections range from 0 to 2.5 Vp in X1 (times 1) mode and 0 to 25.0
mVp in /10 (divide by 10) mode.
Select Mode as follows:
CONT
Activates DTMF Code in a repeating
loop.
BURST
Activates DTMF Code for one tone
sequence.
KEY
Sets DATA ENTRY Keys active as DTMF
keypad.
Level :
Mode : CONT
0.00
DTMF GEN
Code :
Mark :
Space :
Pause :
Level :
Mode : CONT
0123456789ABCD#*
0.00
300 msec
70 msec
70 msec
ON
CONTMode :
Level : 0.00 Vp

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.