QUICK START
1
Unpack the unit and inspect for any damage that may have occurred in shipping. Connect the
proper AC Mains cable to the outlet on the rear panel.
2
Install the PS-232.
3
Connect the intercom lines and Program Input as required. Connect the AC cord to the Mains
circuit.
4
Set the two termination switches on the rear panel to
ON
.
5
Switch the Power
ON
. The green power light should be
ON
and the two red overload lights
should be
OFF
.
6
Switch the Test Tone and A+B Link switches
OFF
. The yellow A+B Link light should be off.
7
Select program sends and set program levels as required using Program Trim and Program
Send Level controls.
8
Set levels and sidetone nulls at remote stations.
9
The intercom system should now be operating properly.
10 Read the rest of this manual for further information.
OPERATION
Congratulations on choosing this Clear-Com product.
The PS-232 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-232 and how to optimize your system setup. Please pay particular attention to the section on sys-
tem 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 direct at the factory. Our applications support and service people are ready to help.
Description
The Clear-Com PS-232 is a single rack space, one- or two-channel intercom power supply which can
provide 1 amp (2 amps peak during call signals and other temporary events) at 30 Volts DC to operate
Clear-Com beltpacks and remote stations. This power is supplied to either or both channels, and will
support up to 40 headset stations or 15 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
quickly as 1/2 second, depending upon whether there was a single or multiple short or overload. The
other channel continues to operate normally. The PS-232'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-232 to operate with
any AC line voltage from 90 to 240 Volts AC at 50 or 60 Hz. The unitized aluminum chassis and extra-
thick front panel with integral rack ears result in reduced size and a lighter weight package that main-
tains legendary Clear-Com ruggedness.
Advanced Fail Safe Power Scheme
As the heart of an intercom system, the power supply has special needs which are not met by traditional
designs. It must work in adverse conditions such as low AC line voltage, momentary or continuous
Clear-Com PS-232 Power Supply
2
