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7. FISH FINDER (SOUNDER)
7-4
Bottom zoom display
The bottom zoom display expands the bottom and the fish near the bottom according
to the zoom range selected on [Zoom Range Span] in the [Settings] - [Sounder] menu.
This display helps you find the density of the bottom. A short echo tail normally indi-
cates a soft bottom (sand bottom, etc.). A long echo tail indicates a hard bottom.
7.2.4 A-scope display (display only)
The A-scope display appears at the right of the screen and is available in any fish find-
er mode. This display shows the echoes at each transmission with the amplitudes and
tone in balance with their intensities. This display helps you identify possible fish spe-
cies and bottom structure.
How to show or hide the A-scope display
Tap the screen to show the pop-up menu, then turn [A-Scope] on or off.
A-scope peak hold
You can show the "normal" A-scope display plus the peak-hold amplitude picture for
the last five seconds in dots.
1. Open the home screen, then tap [Settings] - [Sounder].
2. Turn on [A-Scope Peak Hold].
3. Tap the close button to finish.
Zoom marker
automatically
follows change in
depth.
Bottom zoom display
Bottom
Single freq. display
Zoom marker
ft
BZ/LF
40.4
A-scope display
Single frequency display
"Peak" shows past
amplitude with dots.
Weak reflection
(small fish or noise)
Strong
reflection
(bottom)
Fish
echo
Fish
echo