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Clear-Com MS-222 - User Manual

Clear-Com MS-222
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MS-222
2-Channel
Main
Station
INSTRUCTION
MANUAL
.~
1ll
Clear-Corn
EIF
Intercom
Systems
945
Camelia
St.
Berkeley,
California
94710
510-527-6666
Clear-Com
810142
9/25/91
REV.A
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Clear-Com MS-222 Specifications

General IconGeneral
BrandClear-Com
ModelMS-222
CategoryIntercom System
LanguageEnglish

Summary

RMK OPERATION

MS-222 Overall Description

MS-222 Technical Specifications

HEADSET MICROPHONE PRE-AMP

Specifications for the headset microphone pre-amplifier.

PANEL MICROPHONE PRE-AMP

Specifications for the panel microphone pre-amplifier.

HEADPHONESPEAKER AMPLIFIER

Specifications for the headphone/speaker amplifier.

PROGRAM INPUT

Specifications for the program input.

INTERCOM LINE DRIVERECEIVE CIRCUITS

Specifications for intercom line drive and receive circuits.

INTERCOM SYSTEM SPECIFICATIONS (STANDARD CLEAR-COM)

System specifications for usable line quality and length.

POWER SUPPLY

Specifications for the power supply output.

CONNECTORS

Details the intercom, program, and SA connectors.

AC POWER REQUIREMENTS

Specifies the AC power input requirements.

PHYSICAL SPECIFICATIONS

Provides dimensions, weight, and operating temperature range.

MS-222 Installation

2.1 INSTALLATION OVERVIEW

Overview of installation concepts for the MS-222.

SYSTEM POWERING

2.2 CABLE CONSIDERATIONS

2.3 REAR PANEL DESCRIPTION

Power Switch

Describes the AC power switch location and function.

Power Connector

Details the EIA power receptacle for AC input.

Power Voltage Select and Fuse Block

Explains the fuse block and voltage selection mechanism.

Intercom Line Connectors

Describes the XLR-3M connectors for intercom outputs and wiring.

Termination Switches

Explains the switches for terminating intercom lines.

2.4 INTERNAL OPTIONS AND ADJUSTMENTS

2.5 INTERCONNECTION SETUP

MS-222 Operation

3.1 FRONT PANEL DESCRIPTION

MS-222 Troubleshooting

Symptom #1: System Non-Operable

Addresses non-operable system, no power LEDs illuminated.

Symptom #2: Red Short LED Illuminated

Addresses the RED short LED staying illuminated.

Symptom #3: Excessive Microphone Background Noise

Addresses issues with excessive background noise from the microphone.

Symptom #4: Hum or Buzz in System

Addresses hum or buzz issues in the system.

Symptom #5: System Feedback

Addresses acoustic and electrical feedback problems.

Symptom #6: LowDistorted Audio and Persistent Call Light

Addresses low/distorted audio and persistent Call light.

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