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To set a persistent alarm:

1. Highlight the Alarms tab on the Main Menu.

2. Highlight the box next to the alarm you want to make

persistent (for example, Next Turn).

3. Press ENTER to place a check mark in the Persist box.

Navigation (Nav) Alarms

Next Turn—set an alarm to indicate the next turn in a route.

Select Dist to specify a distance before you reach the next turn

to sound the alarm. Select Time to specify a time before the turn

for the alarm to go off. Select Auto for the unit to provide a Next

Turn alarm at its discretion.

Arrival—set an alarm to sound when you are a speciﬁed

distance or time away from a destination waypoint. Select Auto

for the unit to provide an arrival alarm at its discretion.

Off Course—set an alarm to sound when off course. Select On,

and then enter a distance.

Anchor Drag—set an alarm to sound when you exceed a

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

Custom POI—set an alarm to sound when approaching a

custom POI.

System Alarms

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

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

GPSMAP 278 must be on for the clock alarm to work.

Ext. (External) Voltage—set an alarm to sound when the

external voltage drops below a speciﬁed amount. Select On, and

then enter a speciﬁc voltage.

DGPS—set an alarm to sound when the GPSMAP 278 loses a

differential ﬁx.

Anchor Drag—sets an alarm to sound when you exceed a

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

Accuracy—set an alarm to sound when GPS accuracy falls

outside of the user-set value. Select On, and then specify a

distance.

72 GPSMAP 278 Owner’s Manual

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Garmin GPSMAP 278 User Manual

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