NAVIGATION RADIOS
Pressing DME, ADF, AUX, NAV1, or NAV2 selects
and deselects the radio source and activates the annuncia-
tor. Selected audio can be heard over the headset and the
speakers. All radio keys can be selected individually or
together.
Figure 6A.3.4 Navigation Radios
When no further navigation radio audio is heard, the
amount of background noise is reduced by the Master Avi-
onics Squelch (MASQ) feature.
ENTERTAINMENT INPUTS
The current ICS isolation mode affects the distribution
of the entertainment inputs MUSIC 1 and MUSIC 2.
NOTE: MUSIC 1 and MUSIC 2 cannot be com-
pletely turned off. Audio level for these inputs
can be set above and below a nominal value.
Contact a Garmin-authorized service center for
adjustment.
190-00378-02 Rev. A
MUSIC 1
MUSIC 1 can be heard by the pilot in COPILOT mode
and in ALL mode, and can be heard by the copilot in
PILOT mode and in ALL mode.
MUSIC 1 Muting
MUSIC 1 muting occurs when aircraft radio, marker
beacon or ICS activity is heard.
Muting of MUSIC 1 is also triggered by marker beacon
activity when in ALL, CREW or COPILOT mode. After
muting ceases, MUSIC 1 gradually returns to its original
volume level. This characteristic is known as "soft mute."
The time required for MUSIC 1 to return to its original
volume level at the headset outputs is between 0.5 and
4 seconds.
MUSIC 2
MUSIC 2 can be heard only by the passengers and is
never muted.
Garmin G1000 Audio Panel Pilot's Guide
NOTE: MUSIC 1 muting during ICS activity can be
disabled. Contact a Garmin-authorized service
center for details.
NOTE: If the MKR/MUTE key is pressed and held
for three (3) seconds, the GMA 1347 toggles
music muting ON and OFF during radio signal
reception. Upon toggling, either one (1) or two
(2) beeps can be heard; one (1) beep indicates
that music muting is enabled and two (2) beeps
indicate that music muting is disabled.
OPERATION
6A-9
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