GPSMAP 3206/3210 Owner’s Manual MaIn Menu > alarMs tabM aInM enuSystem AlarmsUse the System sub tab to set alarms for the system clock, batteries, and GPSaccuracy.Clock—provides an alarm for the system clock. Enter a time in the timefield and turn the alarm on and off from the control field menu. Rememberto enter alarm times in the same time format (UTC or local) you are usingfor your system. The unit must be on for the clock alarm to work.Battery—sets an alarm to sound when the battery reaches a user-determined low voltage.GPS Accuracy—sets an alarm to sound when the GPS location accuracyfalls outside the user-determined value.Nav (Navigation) AlarmsUse the Nav sub tab to set navigational alarms, including anchor drag, arrival, andoff course.•••Anchor Drag—sets an alarm to sound when you are a specified driftdistance. Enter a value in the distance field, and use the control field to turnthe alarm on and off.Arrival—sets an alarm to sound when a specified distance or time awayfrom a destination waypoint is exceeded. Enter a distance, radius, or timefor 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 specificdistance. Enter a distance in the distance field, and use the control field toturn the alarm on and off.Sonar AlarmsUse the Sonar sub tab to set sonar alarms, including shallow or deep water,water temperature, and fish.*Shallow Water/Deep Water—sets an alarm to sound when you enteran area of specified depth that is too shallow or too deep. You must bereceiving sonar data for this function to work.Water Temperature—sets an alarm to sound when the transducer reportsa temperature either above, below, inside, or outside the specified values.Fish —sets an alarm to sound when the unit detects a fish of the specifiedsymbols.*You must be receiving NMEA sonar data or using a GSD 20, GSD 21, or GSD 22 for thesonar alarms to function.••••••