Garmin GMA 350 Manual do Piloto - Página 21
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Passenger Address Mode (PA Mode)
Press and hold the SPKR Key for 2 seconds to initiate Passenger
Address Mode. PA Mode is annunciated by a rapid blinking of the
SPKR annunciator. When in PA Mode the crew can use the PTT "Push-
to-Talk" button to deliver announcements over the speaker, to the
passenger headsets, or both depending on configuration.
Split-PA Mode
During Split-PA Mode the pilot can continue to use the radio(s) while
the copilot delivers PA announcements. To initiate Split-PA Mode, first
enter Split-COM Mode by pressing both MIC Keys simultaneously,
then press and hold the SPKR Key for 2 seconds.
3D AUDIO
3D Audio is useful when multiple audio sources are present. By using
different responses in each ear, 3D audio processing creates the illusion that
each audio source is coming from a unique location or seat position.
Because this feature uses different signals for left and right channels, it
requires wiring for stereo intercom and stereo headsets. If 3D audio is
activated when mono headsets are in use, the listener will still hear all audio
sources; however, there is no benefit from location separation.
With a single COM selected and 3D Audio enabled, the listener hears
the audio source at the 12 o'clock position. If both COMs are selected,
the listener hears COM1 at 11 o'clock and COM2 at the 1 o'clock position.
All other intercom positions are processed to sound like their relative
seat location. By default, the GMA 350 assumes the pilot sits in the left
seat. A Garmin authorized service center can make changes to the default
configuration.
190-01134-12 Rev. D
Garmin GMA 350 Pilot's Guide
GMA 350 Audio Panel
21