Telex Stratus 50 - Manual (Page 9)

Stratus Controls
Power
Switch the ON/OFF button to turn the Stratus on or off. Green LED
indicates power on.
Low Battery
Red LED indicates 20 percent or less battery life remaining.
Figure 11
Stratus Battery Box
MIC GAIN
ADJUSTMENT
ACCESS
Figure 12
Microphone Gain Adjustment
Page 7
Microphone Gain Adjustment
The microphone gain has been factory-adjusted to the nominal level required
for aviation use, and it should normally not require readjustment. Any
changes to the mic gain should be done by a qualified avionics technician.
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.
Ear Cushion Replacement
To remove an old ear cushion, simply grasp it and pull it off the earcup. To
install a new ear cushion, start at the top of the earcup. Place the flap on the
back of the ear cushion over the lip along the top of the earcup. Then pull the
bottom of the ear cushion down over the lip at the bottom of the earcup.