Bottom Lost - Furuno FE-800 Operator's Manual

2. SYSTEM MENU
2.7.3

Bottom lost

When the bottom echo is lost, the audible alarm sounds and the alarm message is displayed in
the alert display area at the bottom of the screen.
Note: The alarm code may be displayed with only the final three digits, depending on the Alarm
Mode selected.
To adjust the alert settings, do the following:
1. Press the MENU/ESC key to open the Main menu.
2. Select [System] using  or , then press the ENT key.
3. Select [Alert] using  or , then press the ENT key.
4. Select [Bottom Lost] using  or , then press the ENT key.
5. Select [ON] to output an alert, select [OFF] to stop alert output.
6. Press the DISP key to close the open menus.
27