Adjustment Of Video Level; Video Level And Adc Gain - Furuno FICE-100 Installation Manual

5 ADJUSTMENT OF VIDEO LEVEL

5.1 Video level and ADC Gain

When installation of FICE-100/FOIL-200 is done, you have to check that video level is correctly
set. FICE-100/FOIL-200 radar uses raw radar video from navigation radar to make ICE/Oil radar
image on FICE-100/FOIL-200 screen. Each navigation radar has a bit different video level in
output for FICE-100/FOIL-200. To adopt for different video level you can adjust video level offset
and ADC gain (signal amplifier).
Below is typical video signal received from FAR-2xx7 or FAR-3000.
Below is example of incorrect video level offset:
Photos above: Video level is much too high. Near area is not readable at all. You can see it also
in scope display.
Sweep 0-1100 m:
This graph is to indicate how video is
shown up to 1100 meters.
Blue line: median
Dashed line: 25 % and 75 % fractals
Solid lines: all signals
Sweep 0-11 000 m:
This graph is to indicate how video is
shown up to 11 000 meters.
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