Furuno MFD12 - A-Scope Display (Display Only)

7. Fish Finder
7-6
7.2.4 A-scope Display (display only)
The A-scope display appears at the right 1/16 of the screen and is available in any fish
finder 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
species and bottom structure.
How to show or hide the A-scope display
Use the RotoKey to select [A-scope] then push the key to show or hide the A-scope
display.
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. To show the peak hold display, open the [Fish Finder-
General] menu. Use the RotoKey to select [A-Scope Peak Hold] then push the key to
activate or deactivate peak hold.
A-scope
display
Fish echo
Weak reflection
(small fish or noise)
Single frequency display
"Peak" shows past amplitude with dots.
Strong reflection
(bottom)
46.1
ft
20
40
60
0