Nautel Maine Inc VS300 User Manual
VS300 Operations and Maintenance Manual
Operating the transmitter
Page 2-28
Issue 0.1 2011-03-11
Equalizer screens
The VS300’s exciter includes a fixed equalizer to optimize audio perfomance. There are three menus
available in the tool panel -
available in the tool panel -
EQ Frequency
,
EQ Impulse Response
and
EQ Filter Delay
. Coefficients
are selected based on your channel frequency. All frequencies shown are relative to the channel
frequency.
frequency.
Figure 2.19: EQ Frequency
EQ frequency
See
Figure 2.19
. This panel displays the frequency response of the modulator’s EQ filter.
Click on the panel to display a cursor in the approximate area. The cursor position (magnitude and
amplitude) is noted in the upper, right-hand corner of the panel. Click in other areas of the panel to
provide a coarse adjustment of the cursor position.
amplitude) is noted in the upper, right-hand corner of the panel. Click in other areas of the panel to
provide a coarse adjustment of the cursor position.
Use the left and right buttons to make fine adjustments to the cursor position.
Use the up or down button to maximize (if it was minimized) or minimize (if it was maximized) the
panel size.
panel size.