Furuno TS-331A - Manual (Page 46)

5. MENU DESCRIPTION
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5.5 Options Menu
Color Threshold The Color Threshold dialog box allows the user to adjust the
color table for the echo sounder and vertical sonar windows
individually. Note that the sonar return data is not
compromised and is recorded to file independent of the
color thresholding. Thus on file playback, the threshold may
be altered according to need.
Detection Threshold:
This adjusts the point at which data
is displayed. All sonar data values below the detection
threshold show as black.
Saturation Threshold:
This adjusts the point at which data
is displayed as red. All sonar data values above the
saturation threshold show as red.
Data Value < Detection Threshold = Display as Black
Detection Threshold < Data Value < Saturation Threshold
Datavalue *107
Datavalue = ---------------------
Saturation Threshold
Data Value > Saturation Threshold = Display as Red
Roll Correction Enable/disable roll correction. If enabled, vertical sonar
image display will compensate the roll offset.
Roll Angle Display->ON Display a dashed line indicating the roll angle relative to the
vertical sonar image.
Roll Angle Display->OFF Hide the dashed line indicating the roll angle.
Echo Sounder Beamforming Apply a beam-forming technique to the echo sounder
display.
Continuous Rotation The vertical sonar can scan continuously in one direction
(clockwise or counter clockwise).
1, 2, 3, 4 Choose active window/dialog box. 1, Vertical sonar window;
2, Settings dialog box; 3, Echo sounder window, 4, Catch
sensor window.