Nautel GV3.5, Operation & Maintenance Manual, Page: 60 / 251

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
VERSION 0.2 2014-07-23 PAGE 3.2.43
Equalizer Screens
The GV5/GV3.5’s exciter includes a fixed equalizer to optimize audio perfomance. There are three
menus 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.
Figure 3.2.28: EQ Frequency Response
EQ Frequency Response
See Figure 3.2.28 . This panel displays the frequency response of the exciter’s EQ filter. The panel
displays the gain of the filter with respect to the magnitude and frequency of the modulating signal. A
dashed line is displayed at the 0 dB level.
This tool is useful for installations featuring filter coefficients loaded to compensate for a channel
combiner response.
Click or touch 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. Select 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.