
Garmin G1000 Cockpit Reference Guide for Mooney M20M & M20R
31
SECTION 3 – AUDIO PANEL
SECTION 3: AUDIO PANEL
The GMA 1347 Audio Panel features the following
three (3) major groups of keys in descending order, as
shown in Figure 3-1:
• Communication keys
• Navigation keys
• Intercom keys
Each key is labeled with a white inscription in its cen
-
ter, indicating the name of the associated channel. The
triangular key annunciator lights are white when illumi-
nated and point to the corresponding keys.
The dual knob located at the bottom of the unit con
-
trols volume as well as squelch threshold levels. The
small knob adjusts the volume/squelch level associated
with the pilot channel, while the large knob adjusts the
volume/squelch level associated with the copilot/passen-
ger channels. The red button situated below the dual vol-
ume/squelch knob controls backup (reversionary) mode
selection.
NOTE: A complete audio panel description with
full operating procedures is presented in the
G1000 Audio Panel Pilot’s Guide.
NOTE: Refer to the Audio Panel Pilot’s
Guide Supplement for Mooney for addi-
t i o n a l i n f o r m a t i o n r e g a r d i n g t h e
GMA 1347 as installed in Mooney aircraft.
3.1 FRONT PANEL CONTROLS
• Transceiver audio selector keys
(COM1, COM2, COM3)
• Transmitter (audio/mic) selection keys
(COM1 MIC, COM2 MIC, COM3 MIC)
• Split COM key
(COM 1/2)
• Dedicated telephone interface key
(TEL)
• Passenger address key
(PA)
• Speaker key
(SPKR)
• Marker beacon receiver audio select/mute key
(MKR/MUTE)
• Marker beacon receiver high sensitivity key
(HI SENS)
• Aircraft radio audio selector keys
(NAV1, NAV2, ADF, DME, AUX)
• Intercom manual squelch mode key
(MAN SQ)
• Digital recording playback key
(PLAY)
• Intercom system (ICS) isolation mode keys
(PILOT, COPLT)
• Volume/squelch knob
(VOL/SQ)
• Backup (reversionary) mode button
(DISPLAY BACKUP)
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