Headset Operation; Microphone Gain Adjustment - Telex DH2200 User Instructions

1. Rotate the entire boom overhead to wear the microphone on either
the left side or right side of the head (Note the two stops below the
boom housing).
2. With the DH2000/DH2200 resting securely on top of the head.
Check that the earphone housing(s) are centered over the ears.
3. For best noise cancellation, position the microphone as close to the
mouth as possible, and speak in a normal voice.

Microphone Gain Adjustment

The microphone gain has been factory adjusted to the nominal level required
for normal operation. Under normal circumstances, the microphone gain
does not require adjustments. If needed, adjustment by a qualified technician
is recommended. To access the microphone gain, insert a 1.8mm flat head
screwdriver through the access hole in the boom side earphone housing
(see Figure 1). Counter clockwise rotation decreases the microphone gain.
Gain Adjustment
Access

Headset Operation

Figure 1
Gain Adjustment Access
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