To adjust ICS volume when MAN SQ is OFF
(key not annunciated):
Turn the appropriate VOL/SQ knob.
1.
To adjust ICS volume when MAN SQ is ON
(key annunciated), do one of the following:
1a. If the unit is in manual squelch threshold
adjustment mode (SQ annunciation at the
lower right of the VOL/SQ knob is lit), press the
VOL/SQ knob to toggle to ICS volume adjust-
ment mode, and turn the appropriate VOL/SQ
knob.
1b. If the unit is already in ICS volume adjustment
mode (VOL annunciation at at the lower left
of the VOL/SQ knob is lit), turn the appropriate
VOL/SQ knob.
Intercom Squelch Control
Each microphone input has an automatic squelch
threshold. Manual squelch override as well as keyed ICS
operation (for noisier cockpits) is also available.
The VOL/SQ knob manually adjusts squelch thresh-
old when the MAN SQ key is annunciated and the SQ an-
nunciation is lit. The small VOL/SQ knob controls pilot
squelch threshold and the large VOL/SQ knob controls
copilot/passenger squelch threshold. Turning either knob
clockwise increases the threshold. Turning either knob
counterclockwise decreases the threshold.
NOTE: In manual squelch mode, when the
VOL/SQ knob is adjusted to minimum, all crew
audio inputs can break squelch. When the
VOL/SQ knob is adjusted to maximum, the
ICS audio is heard only when an ICS PTT is
pressed.
190-00378-02 Rev. A
To adjust squelch threshold level manually
when MAN SQ is OFF (key not annunciated):
1.
2a. If the VOL annunciation is lit, press the VOL/SQ
2b. If the SQ annunciation is already lit, turn the
To adjust squelch threshold level manually
when MAN SQ is ON (key annunciated):
1a. If the VOL annunciation is lit, press the VOL/SQ
1b. If the SQ annunciation is already lit, turn the
Volume Adjustments
The audio level of various signals can be adjusted if
desired by a Garmin-authorized service center.
MASTER AVIONICS SQUELCH (MASQ)
MASQ (Master Avionics Squelch) reduces ambient
noise from the aircraft radios. When no audio is detected,
MASQ processing further reduces the amount of back-
ground noise from the radios.
The Master Avionics Squelch (MASQ) threshold level
can be adjusted or disabled by a Garmin-authorized ser-
vice center.
Garmin G1000 Audio Panel Pilot's Guide
Press the MAN SQ key:
knob for SQ annunciation and turn the VOL/SQ
knob.
VOL/SQ knob.
knob for SQ annunciation and turn the VOL/SQ
knob.
VOL/SQ knob.
OPERATION
6A-13
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