59
Input channel operations
Input channel operations
2.
Attenuator
fig.ScrChATT.eps
a. ATT knob
This adjusts the input level of the channel in the range of -48.0
dB– +24.0 dB.
b. OL (Overload) indicator
This will light red when the output of the attenuator exceeds the
OVER Lev setting specified in the METER SETUP popup (p.
122).
Filter overload can also be avoided by using the filter ATT
parameter that is shown in the EQUALIZER popup.
3.
Filter
fig.ScrChFilt.eps
a. FILT button
This turns the filter on/off.
b. FREQ knob
This adjusts the filter frequency in the range of 20 Hz–20.0 kHz.
c. OL (Overload) indicator
This will light red when the output of the filter exceeds the
OVER Lev setting specified in the METER SETUP popup (p.
122).
By default, HPF (High Pass Filter) is assigned to the filter, and
the FREQ knob will adjust the cutoff frequency.
Detailed filter settings are made in the EQUALIZER popup. For
details, refer to “Four-band EQ operations” (p. 107).
4.
Gate/expander
fig.ScrChGate.eps
a. GATE button
This turns the gate/expander on/off.
b. THRE (Threshold) knob
This adjusts the threshold level of the gate/expander in the
range of -80.0 dB–0.0 dB.
c. IN meter
This shows the input level of the gate/expander. For stereo-
linked channels, two meters (L and R) will be shown.
d. GR meter
This shows the amount of gain reduction for the gate/expander.
e. OL (Overload) indicator
This will light red when the output of the gate/expander
exceeds the OVER Lev setting specified in the METER SETUP
popup (p. 122).
Up to twenty-four gate/expander units can be turned on.
For detailed gate/expander settings, refer to “Gate/expander
operations” (p. 93).
5.
Compressor
fig.ScrChComp.eps
a. COMP button
This turns the compressor on/off.
b. THRE (Threshold) knob
This adjusts the threshold level of the compressor in the range
of -40.0 dB–0.0 dB.
c. IN meter
This shows the input level of the compressor. For stereo-linked
channels, two meters (L and R) will be shown.
d. GR meter
This shows the amount of gain reduction for the compressor.
e. OL (Overload) indicator
This will light red when the output of the compressor exceeds
the OVER Lev setting specified in the METER SETUP popup (p.
122).
Up to twenty-four compressors can be turned on.
For detailed compressor settings, refer to “Compressor
operations” (p. 99).
b
a
Normally, you should use the preamp gain to adjust the input
level of the channel, and leave the attenuator at 0 dB. It is
convenient to use the attenuator in the following types of cases.
• When you want to avoid overloading the filter
• When you’ve patched a port that has no preamp gain, such
as an internal port
• When you’ve allowed plenty of head margin to avoid
overloading the preamp’s AD converter, and want to boost
the level at the channel
c
a
b
a
b
c
d
e
a
b
c
d
e
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