Raymarine L1250D, Руководство пользователя

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Chapter 7: Standard Chart Operations 7-39
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7.7 Using Tracks
The Track function is used to mark on-screen the trail that your vessel has
followed, as if it had left a visible fixed wake.
While the track is turned on, it is recorded in the display unit’s memory. You
specify the interval at which track points are made, a line is drawn on-screen
between each point. A maximum of 750 track points each can be saved in the
current track and in up to 5 saved tracks, for a total of up to 4500 points. The
current track remains on-screen, even following a power off/on, until you
clear the track.
A track can be saved and retrieved for display at a later date. For example, you
may wish to display a previous track, and then place waypoints along it that
you can follow. You can only display one track at a time; you must clear a
current track from the screen if you want to display a saved track.
Breaks in the track will be caused when any of the following occur for longer
than the specified track interval: the track is switched off then on; the position
fix is lost; the display unit is switched off.
To enable you to follow this track on your return voyage, the SmartRoute
function converts the track (or the last segment of a track with breaks) into a
route which is automatically reversed, see
SmartRoute on page 7-42 .
This section describes:
• Setting up a track, including how to specify the interval.
• Clearing the current track.
• Managing tracks, using the track list, including Saving, Naming, Erasing
and Showing a track.
• Using Smart Route.
➤
To access the track controls:
1. From the chart display, press the
MENU
key to display the chart set up soft
keys.
2. Press the
TRACK SETUP
soft key to display the Track soft keys:
The following instructions assume you have the track soft keys displayed.
D4162-1
SYSTEM
SET UP!
CHART
SET UP!
TRACK
SET UP!
GPS
SETUP!
D4179-1
TRACKS
OFF ON CLEAR
TRACK TRACK
LIST
TRACK
INTERVAL
81213_1.book Page 39 Monday, March 17, 2003 1:14 PM