Garmin GPSMAP 172 Owner's Manual

Also see for GPSMAP 172: Installation instructions Specifications Quick reference

Contents

Main Menu: Comm Tab/Alarm TabGPSMAP 172/172C NMEA Sentence Output (NMEA version 3 01 compliant)Always transmitted: GPRMC, GPGGA, GPGLL, GPBWC, GPVTG, GPXTE, GPRMB, GPBODSwitchable sentences: GPGSA, GPGSV, GPWPL, GPRTEGarmin proprietary: PGRME, PGRMZ, PGRMMAlarm Tab— contains setting for the unit’s alarms. The Alarm tab is divided into three submenus:System alarms, Nav alarms, and Sonar alarms.System Submenu TabClock – provides an alarm for the system clock. Enter a time in the time field and turn thealarm on and off from the control field menu. Remember to enter alarm times in the same timeformat (UTC or local) you’re using for your system. The unit must be on for the clock alarm towork.Battery – sets an alarm to sound when the battery is reaching a critical state of discharge.DGPS – sets an alarm to sound when the unit loses a differential fix.Accuracy – sets an alarm to sound when the GPS position accuracy falls outside the user-setvalue.Nav Submenu TabAnchor Drag – sets an alarm to sound when you’ve exceeded a specified drift distance. Enter avalue in the distance field and use the control field to turn the alarm on and off.Arrival – sets an alarm to sound when you’re a specified distance or time away from a destina-tion waypoint. Enter a distance radius or time for sounding the alarm and use the control fieldto set the alarm to ‘Off’, ‘Dist’ (Distance), or ‘Time’.Off Course – sets an alarm to sound when you’re off a desired course by a specified distance.Enter a distance in the distance field and use the control field to turn the off course alarm onand off.ReferenceAdvanced NMEASetup PageMain Menu—Alarm Tab(System Submenu)