OPERATION
VOLUME/SQUELCH CONTROL
When the GMA 1347 MAN SQ key is selected, press-
ing the VOL/SQ knob toggles between volume and
squelch adjustment. When the unit is in volume adjust-
ment mode, the VOL annunciation on the lower left of the
VOL/SQ knob is lit and volume can be adjusted. When
the unit is in squelch mode, the SQ annunciation on the
lower right of the VOL/SQ knob is lit and squelch thresh-
old level can be adjusted.
Figure 6A.3.6 Volume/Squelch Control
Input
MAN SQ
Key Press
GMA 1347 VOL/SQ Knob Press
6A-12
Auto, VOL selected
Previous State:
Manual, VOL
Manual, VOL
selected
Previous State:
Manual, SQ
Manual, SQ
selected
Auto, VOL selected
Table 6A.3.5 Transitioning from Auto to Manual Squelch Mode
Garmin G1000 Audio Panel Pilot's Guide
NOTE: When the MAN SQ key is not selected
(auto-squelch is active), pressing the VOL/SQ
knob has no effect on the VOL/SQ selection state
and VOL is automatically annunciated.
When transitioning from auto to manual squelch, the
unit returns to the previous VOL/SQ selection (see table
below).
NOTE: The volume and squelch controls for the
COM and NAV radios are located on the PFD and
MFD bezels (refer to the VHF NAV/COM Pilot's
Guide for details).
Intercom VOL/SQ
Intercom Volume Control
Intercom volume can be controlled with the VOL/SQ
knob. The small knob controls the pilot ICS volume.
The large knob controls the copilot/passenger ICS vol-
ume. Turning either knob clockwise increases audio
level. Turning either knob counterclockwise decreases
audio level. When MAN SQ is off (key not annunciated)
volume adjustment is automatically selected and the VOL
annunciation is lit.
Current VOL/SQ State
Manual, VOL selected
selected
Auto, VOL selected
selected
Manual, SQ selected
Manual, SQ selected
Auto, VOL selected
Manual, VOL selected
190-00378-02 Rev. A
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