Raymarine E Series Guía de instalación Pagina 85

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Chapter 4: Using the Chart 4-37
Head Up (H-up)
Head Up mode displays the chart with your boat’s current heading upwards. As the
heading changes the boat symbol remains fixed and the chart picture rotates accord-
ingly.
Notes: (1)
To prevent continuous backwards and forwards rotations as the boat
yaws from side-to-side, the chart will not update unless the heading
changes by at least 10 degrees from the last displayed orientation.
(2)
It is not possible to select Head Up when the motion mode is set to True.
Course Up (C-UP)
In Course Up mode, the chart picture is stabilized and shown with your current course
upwards. As your boat’s heading changes, the ship symbol moves accordingly. If you
select a new course, the picture will reset to display the new course upwards.
The reference used for Course-Up depends upon the information available at a given
time. The system always prioritizes this information in the following order.:
1. Bearing from origin to destination, i.e. intended course.
2. Locked heading from an Autopilot.
3. Bearing to waypoint.
4. Instantaneous heading.
If heading data becomes unavailable whilst in this mode, a warning message will be
shown and the chart uses 0° heading in relative motion.
Setting the motion mode
The motion mode controls the relationship between the chart and your boat. Whilst
motion mode is active, as your boat moves, the chart is redrawn to keep the boat on-
screen. The three motion modes are:
•Relative motion.
True motion.
•Autorange.
When you pan the chart, the motion mode is suspended. This is indicated in the status
bar by ‘( )’ around the motion mode and enables you to view another area of the chart
whilst navigating. To reset the motion mode and return your boat to the screen, press
FIND SHIP. Manually changing the range in autorange also suspends motion mode.
The default setting is relative motion with zero offset. The mode that you select is
restored at power up.
D6512-1
CHART MODE AND
ORIENTATION…
PRESENTATION…
MOTION MODE
TM RM AR
81244_1.book Page 37 Wednesday, December 1, 2004 11:41 AM
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