Lowrance HDS Gen3 Touch, Руководство оператора

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Trails
Trails are a graphical presentation of the historical path of the vessel,
allowing you to retrace where you have travelled. Trails can be
converted to routes from the
Edit
dialog.
From the factory, the system is set to automatically track and draw
the vessel's movement on the chart panel. The system continues to
record the until the length reaches the maximum points, and then
automatically begins overwriting the oldest points.
The automatic tracking function can be turned off from the Trails
dialog.
Creating new Trails
You can start a new trail from the
Trails
dialog, activated by using
the
Trails
tool on the
Home
page.
Trails settings
A trail is made up of a series of points connected by line segments
whose length depends on the frequency of the recording.
You can select to position trail points based on time settings,
distance, or by letting the system position a waypoint automatically
when a course change is registered.
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Note:
The Trails option must also be turned ON in the chart
settings to be visible.
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Waypoints, Routes, and Trails | HDS Gen3 Operator Manual