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To gain the most benefit from the TracBack feature,
keep the following tips in mind:
• Always clear the track log at the point you want
to return to (boat ramp, dock, trailhead, etc.)
• The ‘Record Mode’ on the Track Logs Page must
be set to ‘Wrap’ or ‘Fill’.
• There must be at least two track log points stored
in memory to create a TracBack route.
• If there is not enough available memory to add
more waypoints and create a TracBack route, you
will be alerted with a ‘waypoint memory full’
message. The receiver will use the available way
points to create a route with an emphasis on the
track log data closest to the destination.
Also, existing TracBack waypoints that are not con-
tained in routes will be erased to free more memory.
The NavTalk will create new waypoints using the first
available three-digit number.
• If the Track Logs Page ‘Interval’ field is set to
‘Time’, the route may not follow your exact path.
(Keep the ‘Interval’ field set to ‘Resolution’ for
best results.)
• If the receiver is turned off or satellite coverage is
lost during your trip, TracBack will draw a
straight line between any point where coverage
was lost and where it resumed.
• If there are frequent changes in direction and dis-
tance in your track log, 30 waypoints may not
accurately depict your exact path. The receiver
will then assign the 30 waypoints to the most
significant points of your track log, and simplify
segments with fewer changes in direction.
SECTION 6
GPS Receiver
Reference
81
Record Mode Set To Wrap
Interval Field Set To
‘Resolution’
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