D - 8 G U I
page 25
D-8 / Feb 2009
INPUT CHANNEL CONTROLS
Gain Control Slider
Adjust input signal gain between -18.0dB - +12.0dB.
VU Meter
The level meter is a dual-indicating peak-over-aver-
age, with peaks riding as a lone “dot” over a solid
bar-graphed average. An “Over” indication is at the top of
the input level bargraph.
MODE Selector Switches
The mode selector switchbank include Surround, Ste-
reo, Mono, Left, Right, and Blend buttons. When pressed,
the switch will light up to indicate the selected mode.
To select a MODE, press the SET button of the desired
channel or mix; the SET button will illuminate and the
current mode setting for that channel will be displayed on
the MODE switches. Select the desired MODE setting.
Surround mode is only available on input faders config-
ured for 5.1 as indicated by the 5.1 label printed on the
fader knob.
Polarity Switches
A pair of buttons, one for left and one for right, are provided to cause the
reversal of absolute phase of the input signal path, in case there is an
inadvertent reversal elsewhere in the signal chain.
PH - Phantom Power Switch
When a microphone signal is selected as the source for the current fader,
you can switch phantom power ON or OFF. This switch is inactive for all other
analog or digital sources.
HPF (High-Pass Filter)
Use the IN switch at the top of the HPF slider to activate
this filter. Use the slider to adjust the cut-off frequency. A
graphical representation of the filter’s effect is displayed in
the filter curve window below.
This is a 24dB/octave variable high-pass filter with
Butterworth characteristics, tunable between 16.1Hz and
500Hz. The relatively high order of filter is necessary to
allow definite and decisive removal of unwanted low-fre-
quency artifacts (air-conditioning rumble, line hum, traffic,
or footstep impacts) with minimal effect on the required
program.
LPF (Low-Pass Filter)
Use the IN switch at the top of the LPF slider to activate
this filter. Use the slider to adjust the cut-off frequency.
A graphical representation of the filter’s effect is displayed
in the filter curve window below.
picture of top left corner