SA160
AIRCRAFTA I R C R A F T
Symphony
AIRCRAFT
11 of 11
Feb 25, 2005
SECTION 9
SUPPLEMENT 3
The marker audio is selected initially by pressing the MKR/mute button
. lf no marker beacon signal is received, then pressing again will
deselect the marker audio. This operation is similar to selecting any
other audio source on the GMA 340. However, if the second button press
occurs while a marker beacon signal is received, then the marker audio is
muted but not deselected. The button's LED will remain lit to indicate
thatthesourceisstillselected.
The GMA 340's function then monitors the marker signal
and automatically unmutes the audio when the current marker signal is
nolongerbeingreceived.
In all cases, the marker beacon lamps operate independently of any
audio selection and cannot be turned off. The GMA 340 can drive
externalmarkerlamps if required.
SmartMute
TM
MKR
MUTE
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