Radar Mode And Orientation - Raymarine A Series Installation And Operation Instructions Manual

21.8 Radar mode and orientation

Radar orientation modes
The radar can operate in a number of orientation
modes to suit different types of navigation.
The orientation of the radar refers to the relationship
between the radar and the direction that you are
travelling in. There are three orientation modes to
choose from:
• Head-Up
• North-Up
• Course-Up
These orientation modes are used in conjunction
with motion mode to control how your boat and radar
relate to one another and how they are displayed
on screen. Any changes that you make to the
orientation of the radar are retained when you switch
off your multifunction display.
Head-Up
This is the default mode for the radar application.
1
Item
1
2
North-Up
1
Radar application
2
D12208-1
Description
Ship's Heading Marker
(SHM) (indicating the vessel's
current heading is upwards).
As the vessel's heading
changes:
• SHM is fixed upwards
• Radar picture rotates
accordingly
2
D12209-1
Item
1
2
Note: If heading data becomes unavailable whilst
in this mode, a warning message will be shown,
the status bar indicates North-Up in brackets
and the radar uses 0° heading in relative motion.
When heading data becomes available once more,
North-Up mode is reinstated.
Note: It is not possible to select Head Up mode
when the motion mode is set to True.
Course-Up
1
Item
1
2
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, that is,
intended course.
2. Locked heading from an Autopilot.
3. Bearing to waypoint.
4. Instantaneous heading (when course-up is
selected).
Note: If heading data becomes unavailable whilst
in this mode, a warning message will be shown,
the status bar indicates the Course Up in brackets
and the radar uses 0° heading in relative motion.
When heading data becomes available once more,
Course-Up mode is reinstated.
Selecting the radar orientation mode
From the radar application:
1. Select Menu.
Description
True north at top.
As your vessel's heading
changes:
• Radar picture is fixed
(north up)
• SHM rotates accordingly
2
D12210-1
Description
Current course upwards.
As your vessel's heading
changes:
• Radar picture is fixed
• SHM rotates accordingly
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