ATEIS UAPg2 - Manual (Page 160)

UAPG2 MANUAL
Version EN.24
160
The system is properly set.
Even when the paging is not active, the ANG is still adjusting the AGC level with the ambient noise to
be ready when the paging will begin.
Notice:
•
The calibration should be done in normal ambient noise (shouldn't have suddenly loud noise
during calibration).
•
Do not adjust the gain of output, amplifier or sensing microphone during or after calibration.
(You can adjust volume of the audio source connected to P.M input.
•
Theoretically, when the calibration has finished, the AGC level will be stable around 0 dB in
the environment of no increasing noise.
But every calibration might exist deviation, if the AGC level is not stable around0 dB, user
could adjust the gain of output function, amplifier or sensing microphone to let AGC level
stable around 0 dB.
•
When the system is calibrating, clicking on the calibration button will cancel the calibration at
that moment. (The system will use the calibration result which was successfully calibrated at
last time.)
•
After calibration successful, the paging microphone shouldn't be placed nearly to sensing
microphone. (because the user's voice will be also received into sensing microphone.)
•
Inactive mode means that it is no paging. When the paging Microphone (or Music) input is
inactive, in general, it needn't increase or decrease gain. But it is better to set an initial gain
before outputs are active, then you become with a good approximation of gain.
Suppose your AGC gain is -6dB and there is a lot of ambient noise. When outputs are active,
but before it reach a correct gain, you won't hear the beginning of the announcement.