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Reference
TracBack Navigation
To activate a TracBack using the NAV/MOB key:
1. Press the
NAV/MOB
key, then highlight the ‘Follow Track’ option and press
ENTER/MARK
.
2. Highlight the track you wish to follow and press
ENTER/MARK
.
3. Choose either ‘Original’, which will navigate you from the end to the start of your trip, or ‘Reverse’,
which will navigate you from the start to the end of your trip and press
ENTER/MARK
.
Once a TracBack has been activated, the GPSMAP 162 will take the track log currently stored in
memory and divide it into segments called ‘legs’. Up to 30 temporary ‘turns’ will be created to mark the
most signifi cant features of the track log in order to duplicate your exact path as closely as possible. To
get the most out of the TracBack feature, remember the following tips:
• Always clear the track log at the point that you want to go back to (dock, etc.).
• The ‘Record Mode’ option on the track log setup page must be set to ‘Fill’ or ‘Wrap’.
• There must be at least two track log points stored in memory to create a TracBack route.
• If the track log interval is set to the ‘Time’ option, the route may not follow 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 will draw a
straight line between any point where coverage was lost and where it resumed.
• If your track log’s changes in distance and direction are too complex, 30 waypoints may not
mark your path accurately. The receiver then assigns the 30 waypoints to the most signifi cant
points of your track, and simplifi es segments with fewer changes in direction.
To stop TracBack navigation:
1. Press the
NAV/MOB
key, highlight ‘Stop Navigation’ and press
ENTER/MARK
.
2. Choose either ‘Yes’ or ‘No’ and press
ENTER/MARK
to confi rm.
Default Track name
Check this box to display track
Total
Distance
Total numberof points
You must save a track before using the
‘Follow Track’ option.
Summary of Contents for GPSMAP 162 Sounder
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