Instruction manual

Cause 1: High DC resistance in ground return.
Solution 1: Use heavier cable; add additional conductor(s) to ground return.
Cause 2: MULTI-CHANNEL cable pairs are not individually shielded.
Solution 2: Replace cable with individually shield pairs.
Cause 3: Headset cables are not wired properly or shielded properly.
Solution 3: Correct wiring. Use headsets with properly shielded wiring.
Problem: Program signal sounds distorted.
Cause: Overload of PROGRAM IN circuit.
Solution: Reduce PROGRAM IN level or reduce the gain of the program signal at the source,
such as an audio mixer.
PS-232 Block Diagram
The following is a block diagram of the PS-232:
Voltage
Regulator
90 - 240
VAC
Power
Program
Trim
Switching
Power Supply
Module
Program
Input
Channel A
Power
Controller
Channel A
Voltage
Sensor
Channel A
Current
Sensor
Channel B
Power
Controller
Channel B
Voltage
Sensor
Channel B
Current
Sensor
Ch B
Term
Ch A
Term
Microprocessor
Overload
Channel
A
Overload
Channel
B
Filter
440 Hz
A + B
Link
Test Tone
On / Off
B
Send Levels A
Channel
B
Channel
A
Program
On / Off
A
B
Clear-Com PS-232 Power Supply
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