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Tips on Using TracBack
To get the most out of the TracBack feature, remem-
ber the following tips:
• Always clear your track log at the exact point that
you want to go back to (trail head, truck, dock,
etc.). The ‘RECORD’ option on the track log setup
page must be set to the ‘Yes’ position.
• There must be at least two track log points stored in
memory to create a TracBack route.
• If there are not enough available waypoints in
memory to create a TracBack route, you will be
alerted with a ‘waypoint memory full’ message, and
the receiver will use any available waypoints to cre-
ate a TracBack route with an emphasis on the track
log closest to the destination (the oldest track log
point in memory).
• If the ‘CRITERIA’ option on the track log setup page
is set to a time interval, the TracBack route may not
follow your exact path (keeping the criteria set to
automatic will always provide the best TracBack
route).
• If the receiver is turned off or you lose satellite cov-
erage during your trip, the TracBack route will sim-
ply draw a straight line between any point where
coverage was lost and where it resumed.
• If the changes of direction and distance of your
track log are very complex, 30 waypoints may not
be enough to accurately mark your exact path. The
receiver will then assign the 30 waypoints to the
most significant points of your track, and simplify
segments with fewer changes in direction.
• If you want to save a TracBack route, copy route 0
to an open storage route before activating another
TracBack. Activating another TracBack or storage
route will overwrite the existing TracBack route.
• Whenever a TracBack route is activated, the receiv-
er will automatically erase any temporary way-
points (e.g., ‘T001’) that are not contained in routes
1-19. If there are temporary waypoints stored in
routes 1-19, the receiver will create any new tem-
porary waypoints using the first three-digit number
available.
TracBack
Navigation
Reference
41
The TracBack feature will
navigate your track log
back to the oldest point in
the receiver’s memory.
The track log will be divided
into segments with tempo-
rary waypoints to create
a route back to the begin-
ning of the track log.
170 manual pages rev D 9/21/98 9:23 AM Page 41