Bottom Alarm - Furuno GP-3500F Operator's Manual

8. ALARMS
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Bottom Alarm

The bottom alarm sounds when the bottom echo is within the alarm range set.
To activate the bottom alarm the depth must be displayed.
1. Press the [MENU] key to show the main menu.
2. Press the [6] key to show the ALARMS SETUP menu.
3. Rotate the [ENTER] knob to select BOTTOM ALARM.
4. Press the [1] key to select "1. ON."
5. Rotate the [ENTER] knob to select DEPTH.
6. Press numeric keys to enter the starting point of the alarm range.
7. Rotate the [ENTER] knob to select RANGE.
8. Press numeric key to set the alarm range, and then press the [ENTER] knob.
9. Press the [MENU] key several times to close the menu.
Note: To deactivate the alarm, select "2. OFF" at step 4.
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