Nilfisk-ALTO CLE8.0 - Manual (Page 9)

3.3 Compressor Section
8
Pic.4: Compressor Section
11 13 14
12
15 16 17
150
6
1
70 15
30
0.1
0.05
0.3
3
5
1.5
0.5
-10
+20 -20
0
+10
COMPRESSOR(dB) RATIO(N:1)
AUTO
ATTACK(mSec) RELEASE(dB/Sec) OUTPUT GAIN(dB)
-30
-40
+10
+20 1
2 10
4
1
11. Compressor Control
This control adjusts the threshold level for the Compressor section in the range of -40dB to +20dB. The SKC
(Smart Knee Control) is applied to the audio signal, which is a maximum of 10dB above the set threshold. Above
such level (10dB) a hard knee compression will be applied.
12. Compressor LED
These LED's will show you the state of the input signal in relation to the threshold level. If the input signal
falls below the set threshold level, the left "-" LED will light up. This means that no signal is being compressed.
When the input signal reach the set threshold level, the middle LED lights up. This means the compression
function hasn't been activated. If the input signal rises above the set threshold level, this signal will be com-
pressed and the "+" LED lights up.
13. Ratio Control
The ratio between the input and output level of audio signals exceeding the set threshold level is determined by this
control. This control is manually adjustable from 1:1 to
:1.
14. Attack Control
This control determines how fast the compressor is to respond to audio signals that will exceed the set threshold.
It can be manually adjusted from 1 to 150 milliseconds.
15. Release Control
This control determines how fast is the compressor to return to unity gain when the audio signal falls below the set
threshold level. It can be manually adjusted from 0.05 to 5 seconds.
16. Auto Switch
Who needs Attack and release control? Activate this switch and these controls will be deactivated. Attack and release
controls will be automatically set by the unit depending on the program material.
17. Output Gain Control
Through this control you can vary the output signal by a maximum of 20 dB. In this way you can recover a level
that had been lost because of the compression process.
3.4 Peak Limiter Section
Pic.5: Peak Limiter Section
19
18
+4
0
+18
OFF
PEAK LIMITER