Clear-Com PS-702 - Manual (Page 7)

P S - 7 0 2 T W O - C H A N N E L P O W E R S U P P L Y
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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, 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.
The PS-702 power supply is a powerful, yet user-friendly unit that can serve
as the heart of a Clear-Com system.We recommend that you read through this
manual completely to better understand the functions of the PS-702 and how
to optimize your system setup.
Please pay particular attention to the section on system wiring, as improper
wiring detracts from the performance of the system or causes system failure.
If you encounter a situation or have a question that this manual does not
address, contact your dealer or call Clear-Com directly at the factory. Our
applications support and service people are standing by to assist you. (Refer to
Chapter 6: “Warranty” for contact information.) Thank you for selecting
Clear-Com for your communications needs.
DESCRIPTION
The Clear-Com PS-702 is a single-rack-space, one- or two-channel intercom
power supply which can provide 1.2 ampere (2 amperes peak during call
signals and other temporary events) per channel to operate Clear-Com
beltpacks and remote stations. This power is supplied to either or both
channels, and will support up to 40 beltpacks or 10 speaker stations.
Clear-Com’s advanced fail-safe design can sense the difference between a
short or an overload to optimally protect itself. Power is restored in as little as
0.5 seconds, depending upon whether there was a single or multiple short or
overload. The other channel continues to operate normally. The PS-702’s
advanced fail-safe circuit will bring the power back up even under full load
conditions. LED indicators signal a fault on either channel. A line-level
program input offers a master input level. Individual program selects, each
with its own send level, are provided for each channel. Use of a switching
power supply allows the PS-702 to operate with any AC line voltage from 100
to 240 volts AC at 50 or 60 Hz. The sturdy metal chassis and extra-thick front
panel with integral rack ears maintains legendary Clear-Com ruggedness.
FAIL SAFE POWER
An intercom power supply has special needs that are not met by traditionally
designed power supplies. An intercom power supply must work in adverse