Clear-Com MS-704 - Manual (Page 7)

M S - 7 0 4 / R M - 7 0 4 F O U R - C H A N N E L M A I N / R E M O T E S T A T I O N S
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OPERATION
INTRODUCTION
Congratulations on choosing this Clear-Com product. Clear-Com was
established in 1968 and remains the market leader in providing intercoms for
entertainment, educational, broadcast and industrial applications. The
ruggedness and high build-quality of Clear-Com products defines the industry
standard. In fact, many of our original beltpacks and main stations are still in
daily use around the world.
We recommend that you read through this manual completely to better
understand the functions of the MS-704 and RM-704. If you encounter a
situation or have a question that this manual does not address, contact your
dealer or call Clear-Com directly. Our applications support and service people
are standing by to assist you. (Refer to Chapter 5,“Warranty” for contact
information.) Thank you for selecting Clear-Com for your communications
needs.
THE CLEAR-COM CONCEPT
Clear-Com is a closed-circuit intercom system that consistently provides
high-clarity communication in high-noise and low-noise environments. A basic
system consists of a single- or multi-channel power supply or main station
connected to various single- or multi-channel remote stations, such as beltpacks
and loudspeaker stations.
Clear-Com manufactures a wide variety of both portable and fixed-installation
units. All are compatible with each other. Clear-Com intercom systems can also
interface with other communication systems and devices.
Clear-Com is a distributed amplifier system; each main and remote station
houses its own mic preamplifier, headset or speaker power amplifier, and
signaling circuitry. Stations bridge the intercom line at a very high impedance
and place a minimum load on the line. The audio level always remains constant,
and does not fluctuate as stations leave and join the network. Low-impedance
mic input lines and specially-designed circuitry make Clear-Com channels
virtually immune to RFI and dimmer noise.
Clear-Com stations are interconnected with two-conductor, shielded
microphone cable. Portable stations are connected with two conductor cables
with 3-pin XLR connectors. One wire carries the DC power from a main station
or power supply to all remote stations, and the other wire carries 2-way (duplex)
audio information. The shield acts as a common ground. One termination (per
channel) is needed throughout the intercom network, and is usually located in
the main station or power supply.
Clear-Com manufactures a
wide variety of both portable
and fixed installation units.
All are compatible with each
other.
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