190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 30-167
Master Squelch
Used to set the audio panel master squelch level from 0% (open, audio
is always heard) 100% (squelched, no audio).
Master squelch functions to prevent low level noise from being passed
to the headset ear speakers, this is known as “squelching” or muting
the audio. To “break” or “open” squelch means that enough audio
signal is present the signal is passed through and can be heard.
Increasing this setting increases the signal level required to break/
open squelch. If needed, adjust the master squelch level so the audio
background noise is muted.
This setting only applies to radio audio inputs (i.e. COMs, NAVs, and
AUXs) and alert inputs. This setting does not affect intercom.
Alert (1-4) Volume Used to set the audio panel alert volumes for alerts 1–4.
Pilot Intercom Volume
(GMA 245R only)
Used to set the volume for the pilot intercom.
Note that pilot intercom volume can also be set in normal mode
Copilot Intercom Volume
(GMA 245R only)
Used to set the volume for the copilot intercom.
Note that copilot intercom volume can also be set in normal mode
Passengers Intercom
(GMA 245R only)
Used to set the volume for the passenger intercom when the
passenger intercom is enabled using the “Enabled/Disabled” selection.
Note that on the audio panel page, intercom volume controls are only
present for the GMA 245R. For the GMA 245, intercom volume is
controlled using the knobs on the actual audio panel.
Enabled/Disabled
- Used to enable (show) or disable (hide) the audio
panel page passenger intercom controls.
Active COM Rx Monitor Mute
Select Enabled to mute the monitored COM radio when audio from the
COM selected for transmission is heard.
Radio Mutes Intercom
Select Enabled to mute intercom audio when audio from the COM
selected for transmission is heard.
Alerts Mutes Music Select Enabled to mute music when alert audio is heard.
Music During Pilot ISO
Select Enabled to allow pilot and copilot to hear selected music when
PILOT or CREW isolation mode is active.
Cockpit Noise Level
Select Enabled to reduce intercom background noise in very high
noise cockpit environments.
Table 30-18 Audio Panel Configuration Settings
Selection Description
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