GPSMAP 392/398/492/498 Owner’s Manual 71M AIN MENU > ALARM TAB• Arrival—sets an alarm to sound when at specified distanceor time away from a destination waypoint. Enter a distanceradius or time for sounding the alarm and use the controlfield to set the alarm to Off, Dist (Distance), or Time.• Off Course—sets an alarm to sound when you are off courseby a specific distance. Enter a distance in the distance fieldand use the control field to turn the off course alarm on andoff.Sonar Sub TabYou 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 whenyou enter an area of specified depth that is too shallow or toodeep. Enter a depth in the distance fields and use the controlfields to turn the alarms on and off.• Water Temperature—sets an alarm to sound when thetransducer reports a temperature either above, below, inside,or outside the specified values.• Fish—sets alarm to sound when unit detects a fish of thespecified 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 thealarm you want.Press QUIT to acknowledge an alarm.
