Garmin GMA 347 Pilot’s Guide
190-00325-00 Rev. A
14
Operation
GMA 347 PROGRAMMING OPTIONS
Programming options include variable configurations that
can be arranged by a Garmin authorized service center. Some
options include a crew operable pushbutton or toggle switch
or might be fixed configurations that are unchangeable by the
crew. Configurations include the following:
• Com Swap. An external pushbutton Swaps Com 1
MIC and Com 2 MIC.
• External Marker Beacon Lights. The GMA 347 can
drive another set of marker lamps on the instrument
panel.
• Marker Beacon Volume and sensitivity are adjustable.
• Deactivate MASQ
TM
(master squelch). Software con-
figuration enables/disables master squelch. Level of
MASQ
TM
is also adjustable.
• PA Muting option enables/disables PA output.
• Record Playback. Two separate options: An external
pushbutton activates voice recorder playback. Also,
the recorder can be controlled with a toggle switch to
enable/disable recording.
• Auxiliary audio. An external switch or software con-
figuration controls the auxiliary audio input.
• Enable or Disable Internal Sidetone. Software configu-
ration enables/disables Internal sidetone.
• Enable or Disable COM muting on transmit and COM
muting on receive. When configured this way, audio
on unselected COMs is muted while the selected COM
is transmitting or receiving audio.
• Pilot or Copilot COM recording. Either permanent
change or a toggle switch option, during the Split Com
mode, COM 1 or COM 2 audio can be selected for
voice recording and playback.
• Record COM 2. Allows recording of Copilot audio.
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