1) Press MENU to enter into menu setting.
2) Use the Up/Down Arrow to select Display option.
3) Press Right Arrow to enter into Display setting.
4) Use the Up/Down Arrow to select the Keel Offset option.
5) Press Right Arrow to enter into the setting.
6) Press Right/Left Arrow to increase or decrease the val-
ue.
7) Press ENT to confirm the setting.
8) Press EXIT to exit the menu setting.
14. Beeper
Beeper is used to sound a tone when a key is pressed.
To set the Beeper:
1) Press MENU to enter into menu setting.
Echofish 820 – Installation & Operation manual
34