Technical data

PAGE 41
Windows PC Software
4.9.1.6 Signal Processing
In this dialogue, the handling of incoming telephone signals can be config-
ured.
FIG. 20 CONFIGURATION OF THE SIGNAL PROCESSING
AGC (Automatic Gain Control)
For each of the four channels, the Automatic Gain Control can be turned on
(AGC) seperately.
Double click with the mouse on the appropriate channel to open the configu-
ration window. To turn AGC off, choose Off, to turn it on, select On.
AGC Settings
The correct functioning of the AGCs can be optimized using different param-
eters.
– Threshold: The AGC only becomes active when the signal has exceeded
the limit of the set value. The default setting is -32 dBu.
– Level : This set level meets the average expected level. Please allow enough
space for head room. The default setting is -18 dBu.
– Speed : depending on how the AGC should re-adjust the level - slow or
very fast- the setting for the speed can be made in this field. The faster the
AGC is, the clearer the level steps can be heard. If the AGC is too slow, in
general the caller is either too quiet or too loud. The default setting is
1dB/100ms.
ATTENTION Use of AGC
AGC is always useful for setting the correct level when it is not possible to
talk to the caller in advance.
But: AGC is no wizard! There is no way that the volume of quiet callers can
be turned up or the volume of very loud callers can be turned down.
!