GPSMAP 392/398/492/498 Owner’s Manual 71
MAIN MENU > ALARM TAB
• Arrival—sets an alarm to sound when at specified distance
or time away from a destination waypoint. Enter a distance
radius or time for sounding the alarm and use the control
field to set the alarm to Off, Dist (Distance), or Time.
• Off Course—sets an alarm to sound when you are off course
by a specific distance. Enter a distance in the distance field
and use the control field to turn the off course alarm on and
off.
Sonar Sub Tab
You must be receiving sonar data for these functions to work. See
“Using Sonar” on page 72 for more information.
• Shallow Water/Deep Water—sets an alarm to sound when
you enter an area of specified depth that is too shallow or too
deep. Enter a depth in the distance fields and use the control
fields to turn the alarms on and off.
• Water Temperature—sets an alarm to sound when the
transducer reports a temperature either above, below, inside,
or outside the specified values.
• Fish—sets alarm to sound when unit detects a fish of the
specified symbol.
To set an alarm:
1. Press and hold MENU to open the Main Menu.
2. Use the ROCKER to highlight the Alarm tab and a sub tab.
3. Highlight the field you want to start, and press ENTER.
4. Use the ROCKER and ENTER keys to select and set the
alarm you want.
Press QUIT to acknowledge an alarm.
