Off Course Alarm - Humminbird 500 SERIES 580 Operation Manual

moved too far off course based on the menu setting when navigating. Off
Course Alarm allows you to set how far the boat is allowed to move off course
before the Off Course Alarm will sound.
To change the Off Course Alarm setting:
1. Highlight Off Course Alarm on the Alarms main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Off
Course Alarm setting. (Off, 25 to 3000 feet, 10 to 1000 meters
[International Models only], Default = 300 ft, 100 m)

Off Course Alarm

Off Course Alarm sounds when the boat has
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Off Course
Limits
Arrival
Alarm Circle