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Intercom User Station US2002 - 30
Figure 16. US2002 Bottom View
Voice-Activated Microphone (Vox) Setup
If you are going to use vox, you must adjust the vox level for proper operation. If the vox level is too
low, room noise will activate the microphone. If the vox level is too high, the microphone will not
activate when you begin talking. Check and set the level as follows:
1. If you are using a headset, tap the Headset key twice to turn on headset vox. Or, if you are
using a panel microphone, tap the Panel Mic key twice to turn on panel mic vox. Which
ever key you tap, it will glow orange when the microphone is off and will flicker or turn
green when sound is picked up by the microphone.
2. Position the microphone at its normal operating location. If you are using a headset, put
the headset on and position the microphone close to your mouth. Insure that background
noise is at the normal operating level.
3. Do not speak into the microphone.
4. Check the Headset or Panel Mic key, whichever you are using. If the key is constantly
glowing orange, turn the vox trimmer clockwise until the key begins to flicker green (mic
activating) then turn the trimmer slightly back in the counterclockwise direction until the
Panel Mic key just returns to steady orange (mic off). If you are wearing a headset, make
sure that breathing and movement do not cause the Panel Mic key to flicker green. If they
do, adjust the vox control slightly more in the counterclockwise direction to eliminate this.
5. Speak into the microphone in a normal voice, and check that the headset key immediately
turns green when you talk. If it does not, move the microphone closer to your mouth. If
you are still unable to get satisfactory results, it may be that the microphone does not have
the directional characteristics required for the noise level in the room. A directional, or
cardioid, microphone is recommended when using Vox. Omnidirectional microphones
may not produce good results.