Garmin GPS 38 Owner's Manual

Also see for GPS 38: Declaration of conformity

Tips on Creating and Using the TracBack FeatureThe GPS 38’s TracBack feature is designed to help youquickly create and activate a route that follows your pathback to a user-defined starting point. To get the most out ofthe TracBack feature, remember the following tips:• Always clear your track log at the exact point that youwant to go back to (trail head, truck dock, etc.).• The ‘RECORD’ option on the track log setup pagemust be set to the ‘Yes’ position.• There must be at least two track log points stored inmemory to create a TracBack route.• If there are not enough available waypoints in memo-ry to create a TracBack route, you will be alerted witha ‘waypoint memory full’ message, and the receiverwill use any available waypoints to create a TracBackroute with an emphasis on the track log closest to thedestination (the oldest track log point in memory).• If the ‘CRITERIA’ option on the track log setup page isset to a time interval, the TracBack route may not fol-low your exact path (keeping the criteria set to auto-matic will always provide the best TracBack route).• If the receiver is turned off or you lose satellite cover-age during your trip, the TracBack route will simplydraw a straight line between any point where cover-age was lost and where it resumed.• If the changes of direction and distance of your tracklog are very complex, 30 waypoints may not beenough to accurately mark your exact path. Thereceiver will then assign the 30 waypoints to the mostsignificant points of your track, and simplify segmentswith fewer changes in direction.• If you want to save a TracBack route, copy route 0 toan open storage route before activating anotherTracBack. Activating another TracBack or storageroute will overwrite the existing TracBack route.• Whenever a TracBack route is activated, the receiverwill automatically erase any temporary waypoints(e.g., ‘T001’) that are not contained in routes 1-19. Ifthere are temporary waypoints stored in routes 1-19,the receiver will create any new temporary waypointsusing the first three digit number available.The TracBack feature willnavigate your track log backto the oldest point in thereceiver’s memory.The track log will be dividedinto segments with tempo-rary waypoints to createa route back to the begin-ning of the track log.REFERENCETracBackNavigation30