491 Echo Sounder Operations Manual
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3
Adjusting the Echo Sounder Picture
The picture menu . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Adjusting the gain (strong echoes) . . . . . . . . 3-28
Adjusting the clutter (weak echoes) . . . . . . . 3-29
Adjusting the signal level (weak echoes) . . 3-30
Suppressing interference (the noise limiter) 3-31
Selecting the color bar (hue) and white level 3-32
T
his chapter explains the different ways you can adjust the
echo sounder’s picture, including gain, clutter, the noise
limiter, white level, and signal level.
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