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MIC GAIN
ADJUSTMENT
ACCESS
Microphone Gain Adjustment
The microphone gain has been factory-
adjusted to the nominal level required for
FAA certification, and it should normally
not require readjustment. Readjustment
by a qualified avionics technician is
recommended. To access the gain trimmer, insert a
small flat-blade screwdriver through the access hole in the
mic assembly. Clockwise rotation of the trimmer increases
gain.
Mic Assembly Removal
Press the release catch on the microphone
assembly, and carefully pull out the
assembly. Avoid pulling the microphone
wires. Pull on the plastic connector
housing to unplug the microphone
assembly.
Air3100 & Air 3100L Headset Wiring Diagram
Air3100 Microphone Wiring Diagram