Garmin GMA 347 User Manual

Page 16

Garmin GMA 347 Pilot’s Guide

190-00325-00 Rev. B

Operation

GMA 347 PROGRAMMING OPTIONS

Programming options include variable conﬁgurations

that can be arranged by a Garmin authorized service center.
Options include a crew operable pushbutton or toggle switch,
and ﬁxed conﬁgurations that cannot be changed 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

(master squelch). Software

conﬁguration enables/disables master squelch. Level
of MASQ

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 controls the

auxiliary audio input.

• Enable or Disable Internal Sidetone. Software

conﬁguration 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.

• Record COM 2. Allows recording of Copilot audio in

place of Pilot audio (COM1) during Split Com mode.

• Pilot and Copilot MIC volume levels over Speaker

(during PA mode) are adjustable.