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Garmin GPSMAP 278C Manual

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Navigating a Saved Track
You can save your track log to use later as a TracBack, which
reduces your track log into a route with up to 300 turns. When
initiated, a TracBack route leads you back to the oldest stored track
log point. It is a good idea to clear the existing track log before you
start your current trip. Also, you must save an active track log before
you can navigate it as a TracBack.
To activate a TracBack using the NAV key:
1. Press NAV, highlight Navigate Track, and press ENTER.
2. Highlight the track you want to navigate, and press ENTER.
Selecting a Saved Track
3. Use the ROCKER to select the point you want to navigate to
(TracBack to), and press ENTER.
TracBack Tips
When a TracBack is initiated, the GPSMAP 278 divides the track
into segments called legs. Up to 300 temporary turns are created to
mark the most signicant 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 might 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, 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 might not mark your path accurately.
The receiver then uses the most signicant points of your
track so there are fewer changes in direction.
GPSMAP 278 Owner’s Manual 41
MArIne Mode > MAnAgIng Your trAcks
… 49 …


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