Communications Company IC-29, Manual

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COMMUNICATIONS COMPANY • IC-29 Manual
GLOSSARY OF TERMS
ANTIVOX
Allows for the decoupling of the inside speaker and microphone so the sounds coming from the
inside speaker can be rejected by the inside microphone Vox circuit.
CIL (call interval long)
Annunciator call-in tone repeat interval, 1.6 sec on, 1.6 sec off.
CIM (call interval medium)
Annunciator call-in tone repeat interval, 800 ms on, 800 ms off.
CIS (call interval short)
Annunciator call-in tone repeat interval, 400 ms on, 400 ms off.
CONDENSER MICROPHONE
A microphone with an active condenser element. Requires a separate power connection or
phantom power to operate.
DUPLEX OPERATION
A system that allows a simultaneous two-way conversation between two given points.
DYNAMIC MICROPHONE
A microphone with a electro magnetic diaphragm-type element. Does not require any outside
voltage or phantom power to operate.
ELECTRET CONDENSER MICROPHONE
See - Condenser Microphone.
INSIDE
The station whose listening volume is controlled by the INSIDE level knob. Usually the operator
side.
LINE LEVEL
An audio signal level between 78 mV (-20dBm) and 7.8 V (+10 dBm). Very large as compared to
a MIC LEVEL signal. A line level signal usually comes from the output of audio equipment, such
as mixers, wireless units and pre-amps.