Garmin GPSMAP 496 User Manual download pdf (Page 109)

GPSMAP 496 Owner’s Manual 101

MAIn Menu > celestIAl tAb

System Alarms Sub Tab

Clock—sets an alarm based on the unit’s clock. Select On, and then

enter a specic 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 specied amount. Select On, and then enter a

specic voltage.

DGPS

—sets an alarm to sound when the unit loses a differential x.

Accuracy

—sets an alarm to sound when GPS accuracy falls outside

of the user-set value. Select On, and then enter a specic distance.

Sonar Alarms Sub Tab (Marine Mode Only)

You must be receiving sonar NMEA data for Sonar alarms to work.

Sonar Alarms Sub Tab

Shallow Water and Deep Water—sets an alarm to sound when you

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

Water Temp

—sets an alarm to indicate if the water temperature has

exceeded or dropped below a specic temperature, or fallen outside/

inside a specic temperature range. Select Above or Below and then

enter a specic temperature, or select Inside or Outside and enter a

range of temperatures.

Drift—sets an alarm to sound when you have exceeded a specied

drift distance. Select On, and then enter a specic distance.

Fish—sets alarm to sound when unit detects a sh of the specied

symbol size.

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Garmin GPSMAP 496 User Manual Page 109