Garmin 276c Manuale Proprietario

Off Course—sets an alarm to sound when off your desired course. 

Select On, then enter a distance.
Anchor Drag—sets an alarm to sound when you exceed a specified 

drift distance. Select On, and then enter a distance.

The System sub tab contains the following alarms:
Clock—sets an alarm based on the unit’s clock. Select On and then 

enter a specific time that you want the alarm to sound. The unit must 

be on for the clock alarm to work.
Ext. (External) Voltage—sets an alarm to sound when the external 

voltage drops below a specified amount. Select 

On and then enter a 

specific voltage. 
DGPS—sets an alarm to sound when the unit loses a differential fix. 
Accuracy—sets an alarm to sound when GPS accuracy falls outside 

of the user-set value. Select On and then enter a specific distance. 

The Sonar sub tab contains the following alarms:
Shallow Water/Deep Water—sets an alarm to sound when you 

enter an area of water that is too shallow or deep. Select On and 

then enter a specific distance. You must be receiving sonar NMEA 

data for this function to work.
Water Temp—sets an alarm to indicate if the water temperature  

has exceeded or dropped below a specific temperature, or fallen 

outside/inside a specific temperature range. Select Above or Below 

and then enter a specific temperature, or select Inside or Outside 

and enter a range of temperatures. You must be receiving sonar 

NMEA data for this function to work.
Drift—sets an alarm to sound when you exceeded a specified drift 

distance. Select On and then enter a specific distance. 
Fish—sets an alarm to sound when fish are detected with sonar.

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