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90 GPSMAP 496 Owner’s Manual
Automotive
Automotive Mode Pages and Features > Managing Your Tracks
Navigating a Saved Track
The TracBack function allows you to retrace your path using the track
log automatically stored in the receiver’s memory, which eliminates the
need to store waypoints along the way. TracBack routes are created by
reducing your track log into a route with up to 300 turns and activating
an inverted route along those points. When activated, a TracBack route
leads you back to the oldest stored track log point, so it is a good idea
to clear the existing track log before you start your current trip. You
must save an active track log before you can navigate it as a TracBack.
To start a TracBack using Direct To key:
1. Press Direct To , then highlight Navigate Track, and press
ENTER.
Selecting a Saved Track
2. Highlight the saved track you want to navigate, and press
ENTER.
3. Use the ROCKER to select the point you want to navigate to
(TracBack to), and press ENTER.
TracBack Tips
When a TracBack has been started, the GPSMAP 496 divides the
track into segments called legs. Up to 300 temporary turns are
created to mark the most signicant features of the track in order to
duplicate your exact path as closely as possible. To get the most out
of the TracBack feature, remember these tips:
Always clear the track log at the point that you want to go back
to (such as a dock or campsite).
The Record Mode option on the Active Track tab must be set to
Fill or Wrap.
If the track log Interval option on the Active tab is set to the
Time option, the route may not navigate your exact path (keep
the interval set to Resolution for best performance).
If the receiver is turned off or satellite coverage is lost during
your trip, the TracBack draws a straight line between any point
where coverage was lost and where it resumed.
If the changes in distance and direction of your track are too
complex, 300 waypoints may not mark your path accurately. The
receiver then uses the most signicant points of your track so
there are fewer changes in direction.
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