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4. VIDEO SOUNDER OPERATION
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A-scope display (display only)
The A-scope display, available in all modes, shows echoes at each transmission
with amplitudes and tone proportional to their intensities, on the right 1/3 of the
screen. It is useful for estimating fish species and seabed composition. To turn
on the A-scope display, press the DISPLAY MODE soft key, select display mode
desired, then press the A-SCPE soft key to turn the A-scope display on or off as
appropriate. For the mode except SINGLE MODE the screen must be split
horizontally to show the A-scope presentation.
SINGLE FREQ DISPLAY A-SCOPE
DISPLAY
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Strong echo (bottom)
A-scope Display
Weak echo (fish)
No response
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A-scope display
4.2.3 Selecting screen split method in combination displays
On combination sounder displays you can split the screen vertically or
horizontally, using the SPLIT soft key as below.
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SPLIT
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How to use the SPLIT soft key (example: dual frequency display)