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5.4 UTILITY Menu
IMPORTANT!
Enabling the LIMITER on a specific output also changes the way in which the level is displayed
on the corresponding
In fact, the level shown on this ladder is no longer the "absolute" output level,
LED ladder:
but the level of the signal at -24dB, -12dB, -6dB compared to the
(orange
LED), no
LIMITER's threshold
LIMIT
matter what the threshold value is.
This menu comprises a series of submenus that allow to set a series of system options and access certain utilities,
such as the control of the protection against accidental or unauthorized changes:
b. Reaction Times
Allows to choose between 3 types of Limiter reaction speed.
In fact, these are attack and release times that are optimised so that the Limiter reacts more or less rapidly
when the signal exceeds or drops below the threshold:
Fast
Normal
to mid frequencies or full-range systems.
Slow
suited to outputs dedicated to low frequencies.
signal unchanged.
The editing values are within the following ranges:
+19.8dBu ~ -10dBu, with 0.2dBu steps
7.574V ~ 0.245V with variable steps
The Off value disables the LIMITER, whereas any other value enables it.
LIMITER
FAST
NORMAL
SLOW
ATTACK
RELEASE
1 ms
10 ms
8 ms
80 ms
45 ms
450 ms
O P 1
f
f
O
s
a
F
t
O P 1
8
5
o
l
S
w
.
O P 1
f
f
O
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l
S
w
short times, suited to rapid Limiter operation. Normally more suited to outputs dedicated to high
frequencies.
intermediate times, suited to the majority of applications. Normally more suited to outputs dedicated
long times, suited to avoiding rapid repeated level jumps (pump effect). Normally most
Allow to set the level above which the Limiter intervenes (limiting the signal) and below which it leaves the
The measurement unit can be chosen with the Lim. Thresh. Unit function (
menu
submenu).
UTILITY
- Units
o m
L i m
C
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L i m .
L i m .
L i m .
o m
L i m
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p
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c. Threshold
d. Ratio
Allows to set the compression ratio, that is to say how the signal exceeding the threshold has to be reduced.
The editing values are the following: Lim. 20.0 10.0 8.0 6.0 5.0 4.0 3.5 3.0 2.5 2.0 1.7 1.5 1.3 1.1.
The "Lim." Value corresponds to the maximum compression ratio (all the signal exceeding the threshold is cut)
and in this condition the processors acts as a LIMITER.
The other values allow to reduce the signal with a ratio from 1:20.0 (high compression) to 1:1.1 (low compression)
in order to obtain different compression effects according to the kind of signal and to the kind of application.
O P 1
o
l
S
w
O P 1
f
f
O
o
l
S
w
. 5
2
L i m .
o m
L i m
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p
o m
L i m
C
p
f
f
O
