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Analog Bypass: de-pressing the "On/Off Process" button, the Analog
Bypass can be activated.
In this condition the CLP260 is bypassing the Digital section and
connecting the Analog Input to the Analog Output.
Here the Max Output is reaching the +10.4dBu with a GND Floor Noise of
-92.3dBu, bringing the S/N of the unit to 102.7dBu
Set Input and Output Potentiometers for a 0dBu Input/Output path: in
order to evaluate the performances of the CLP260 RMS Compressor,
we'll set a 0dBu path, and to that one we'll refer the all measurement we'll
show for making understanding the Unit's way of working.
What anyway will be shown, will remain valid for any input level value
there where with the Input Level Potentiometer, the signal to the A/D will
be adjusted so to be close to the Clipping (notified by the RED CLIP Led
or by the symbol ">" Input Level page on the LCD).
In order to be on a 0dBu Input/Output path, when the Unit is in "Process
Bypass", need from the previous condition to set the external Analog
Input Signal to 0dBu.
In order to get in Output also 0dBu, being at the maximum A/D Input level,
need to set the Input Level Potentiometer to 7 of the Grid of Fig A and the
Output Level Potentiometer to the position 7 of the Grid of Fig B.
The Input Level page on the LCD will just stop a step before the showing
of the ">" symbol.
To the 0dB path condition are referred the AGC, RMS Compressor and
Peak Limiter's Thresholds that when set to 0dB are meaning that the
processes are not active being the Threshold set at the maximum input
level to the unit...which cannot be exceeded, impeding therefore any
compressing/limiting process.
This means the the 0dB threshold of the AGC, RMS Compressor and
Peak Limiter processes are related to the max Input level and therefrom
has to be evaluated the threshold set when using a threshold different
from 0dBu: in example a -10dBu Threshold on the RMS Compressor
means that starting from an input reaching the max input level, this input
will be limited at 10dBu lower RMS level.
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