22
Adjust Microphone Gain
The microphone gain has been factory-adjusted to the nominal level required for aviation use, and should not require
adjustment. Any changes to the microphone gain should be done by a qualified avionics technician.
NOTE: Adjustments should be made in small increments.
To adjust the gain trimmer, do the following:
1. Insert a small, flathead screwdriver through the access hole in the boom mic module.
2. Turn the gain pot clockwise to increase the gain.
OR
Turn the gain pot counterclockwise to decrease the gain.
Care and Maintenance
Clean the Headset
When cleaning your headset, do the following:
• use a soft, slightly damp cloth (water only).
• if necessary, a mild mix of soapy water may be used.
IMPORTANT: Excessive water can damage the headset and cause short circuits electrical components of the unit. Do
not use solvents or chemicals when cleaning your headset as it may cause damage or inoperability.
FIGURE 20. Mic Gain Adjustment Access Hole
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