Furuno CH-270 - Manual (Page 82)

4. ECHO SOUNDER MODE
4-10
4.10.2 Finding echo strength (A-scope display)
The A-scope display shows echoes at each transmission with amplitudes and tone
proportional to their intensities, on the right 1/4 of the screen. It is useful for estimating the
kind of fish school and bottom composition.
1. Press the [MENU] key.
2. Press
▲ to choose MENU.
3. Press ◄ or ► to choose ES.
4. Press ▼ to choose A-SCOPE.
5. Press ◄ or ► to open the dialog box.
A-SCOPE
OFF ON
6. Press ► to choose ON.
7. Press the [MENU] key to close the dialog box.
Depth, water temp. display
A-scope display
Echo sounder display
A-scope display