Garmin GMA 340 Pilot's Manual
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Garmin GMA 340 Pilot's Manual

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G M A 3 4 0
A U D I O P A N E L
P i l o t ' s
G u i d e
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Summary of Contents for Garmin GMA 340

  • Page 1 G M A 3 4 0 A U D I O P A N E L P i l o t ’ s G u i d e ®...
  • Page 2 Front Panel Controls Marker Beacon Lamps Marker Beacon Receiver Audio Select/Mute Button Marker Beacon Receiver Sensitivity Indicator LED. Marker Beacon Receiver Sensitivity Selection Button Unit On/Off, Pilot Intercom System (ICS) Volume Pilot ICS Voice Activated (VOX) Intercom Squelch Level Copilot and Passenger ICS Volume Control (Pull out for Passenger Volume) Copilot/Passenger VOX Intercom Squelch Level Crew Isolation Intercom Mode Button...
  • Page 3 On, Off, and Fail-Safe Operation The GMA 340 is powered off when the left small knob (5) is rotated fully CCW into the detent. To turn the unit on, rotate the knob clockwise past the click. The knob then functions as the pilot ICS volume control.
  • Page 4 COM feature in a given installation. COM Swap Function The GMA 340 allows the use of a remote mounted switch (typically on the yoke) to alternately transfer the active microphone back and forth between COM1 and COM2. Pressing the remote installing agency switch will have no effect if COM3 is the active transceiver.
  • Page 5 After the operator has stopped talking, the intercom channel remains momentar- ily open to avoid closure between words or normal pauses. The GMA 340 provides three intercom modes: PILOT, CREW and ALL. Mode selection is accomplished using the PILOT and/or CREW buttons. Pressing a mode button activates the corre- sponding ICS mode.
  • Page 6 • ALL mode allows full intercom communication between everyone plugged in to the GMA 340. Aircraft radios are also heard by all. • MUSIC1 and MUSIC2 stereo entertainment inputs are affected by the intercom mode selected.
  • Page 7 However, the audio output level is adjustable by your installing agency The GMA 340’ s marker beacon receiver controls are located on the left side of the front panel (1-4). The SENS button selects either high or low sensitivity as indicated by the HI or LO LED being lit.
  • Page 8 ® © 1998 GARMIN Corporation www.garmin.com GARMIN International, Inc. 1200 E. 151st Street, Olathe, KS USA 66062-3426 Telephone (913) 397-8200 or 1-800-800-1020 FAX (913) 397-8282 GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ U.K.

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