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Output level setting.
Output level setting for regulation level optimization
According to NFS31-122 norm, the regulation sytem can fade the signal only in maximal 20dB peak ne peut atténuer le signal
que dans une plage maximale de 20dB. In broadcasting oversized area, the regulator can work beyond planned peak and
finished to shunt. The output level setting allows to ajust the correct power for a optimal regulation of system.
Output level setting
1 - On pink noise, regulate the output level of your display to reach 0 dB on an analog display or -6 dB on a digital display.
2 - Start the automatic procedure of output fading setting and follow the instructions on LCD screen.
Procedure :
Select the page
to output level setting
"Max ampli
and validate!!"
Attack and release time setting
To get the best performance it is necessary to set attack and release time, according to the musical program content. The most
important factor is the signal dynamics. One can consider two types of music :
- Music with low dynamics generally recorded music
- Music with heavy dynamics associated to live music
According to these two main families, the attack and release times can be set as following :
1° ) Low dynamics :
- Fast attack time.
- Release time longer than attack time to avoid pumping.
Example : Attack time = 1seconde
These musics having an important average density, the regulator must act rapidly, otherwise it will not regulate
enough, and the average level could excess the instruction level.
Remark : The attack time can be set to suit the events embedded in the music (i.e. Tempo...)
AMIX
FUNCTIONING MODE: MODE 1 (next)
:
PAGE
4
Turn the sound of
amplis (amplis max) .
Applicate a pink noise in display
input.Regulate the sound to
get 0 dB on VU meter
(or -6dBFs for
a digital display)
Release time = 2 or 3 secondes
:
7
Start the function
"fade setting"
ENTER
Necessary to lead amplis
25
"Executed
ESCAPE
fade setting"
"Att. Max = 32 dB
DROP OUT SETTING
Modify the power of
broadcasting sytem
(turn the amplis) and
start again the function
ESCAPE
SNA 50-2
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