Garmin G1000 Mooney M20TN - Manual (Page 112)

190-00647-00 Rev. A Garmin G1000 Pilot’s Guide for the Mooney M20M/M20R/M20TN 4-32
AUDIO PANEL AND CNS
4.5 ADDITIONAL AUDIO PANEL FUNCTIONS
POWER-UP AND FAIL-SAFE OPERATION
POWER-UP
The Audio Panel performs a self-test during power-up. During the self-test all Audio Panel annunciator
lights illuminate for approximately two seconds. Once the self-test is completed, most of the settings are
restored to those in use before the unit was last turned off.
FAIL-SAFE OPERATION
If there is a failure of the Audio Panel, a fail-safe circuit connects the pilot’s headset and microphone directly
to the COM1 transceiver. Audio is not available on the speaker.
MONO/STEREO HEADSETS
Stereo headsets are recommended for use with the G1000.
Using a monaural headset in a stereo jack shorts the right headset channel output to ground. While this does
not damage the Audio Panel, a person listening on a monaural headset hears only the left channel in both ears.
If a monaural headset is used at one of the passenger positions, any other passenger using a stereo headset hears
audio in the left ear only.
SPEAKER
All of the radios can be heard over the cabin speaker. Pressing the SPKR Key selects and deselects the cabin
speaker. Speaker audio is muted when the PTT is pressed. Certain aural alerts and warnings (autopilot, traffic,
altitude) are always heard on the speaker, even when the speaker is not selected.
The speaker volume is adjustable within a nominal range. Contact a Garmin-authorized service center for
volume adjustment.
Figure 4-44 Passenger Address and Speaker Keys