Intercom Controls - Firecom 3000C Installation & Operation Manual

FIGURE 22:
The Intercom
Controls
20.
I N T E R C O M O P E R A T I O N

INTERCOM CONTROLS

The 3000C Intercom Unit has two controls on the front panel which affect the intercom
operation (Figure 22).
VOLUME:
The Volume Control is the master control for overall volume of the 3000C Intercom
System. This volume should be set with the individual headset volumes turned all the way
up. Set the Intercom Volume Control slightly louder than a comfortable listening level, then
adjust the volume down using the individual volume control on each headset.
SQUELCH:
The Squelch Control adjusts the level at which the microphones turn on/off to limit the
background noise. This control does NOT affect, or relate to, the radio squelch control.
This adjustment MUST be performed while the apparatus engine is running and "normal"
background noise is heard.
1. Put on a Radio-Transmit Headset.
2. Turn the Squelch Control fully clockwise.
SLOWLY, turn the Squelch Control counter-clockwise stopping
3.
IMMEDIATELY once the background noise is no longer heard.
Once the Squelch is properly adjusted, additional adjustment should not be necessary.
Power LED
Squelch Control
Transmit LED
3000C
Volume Control