NorthStar Navigation Echo Sounder NorthStar 491 - Manual (Page 31)

491 Echo Sounder Operations Manual Page 27
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.