Clear-Com Communication Systems
Encore System Installation Instruction Manual
1-26
Warning:This is a potentially dangerous situation. A shock hazard
may exist between the metal boom of a Remote Station
headset and ground.
PROBLEM: System feedback (Acoustical)
Cause 1: Listen Level control at this station or a Remote
Station is set too high.
Solution 1: Adjust.
Cause 2: Sidetone Null control at this station or a Remote
Station is not adjusted correctly.
Solution 2: Adjust. Refer to the procedure in the Front
Panel Controls section of this manual.
Cause 3: Channel unterminated.
Solution 3: Set the Main Station or Power Supply
termination switch for that channel to the ON
position.
Cause 4: A headset extension cord was used.
Solution 4: Headset extension cords are not recommended.
PROBLEM: Excessive crosstalk
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 Input circuit.
Solution: Reduce Program Input level or reduce the gain
of the program signal at the source, such as an
audio mixer.
PROBLEM: Call signals do not function.
Cause 1: Excessive DC loading of intercom line.
Solution 1: Remove any audio transformers or other
equipment which may be connected across the
intercom line. If equipment other than
Clear-Com intercom equipment must be
connected to the intercom line, please contact
Clear-Com application or service personnel for
advice.
Cause 2: Far too many terminations on the intercom line.
Solution 2: Check all Main Stations and Power Supplies to
make sure each intercom channel is terminated
at only one point .
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