Raymarine hsb2 PLUS Series - 4.2 Changing the Heading Mode

4-2 hsb
2
PLUS Series LCD Display
Changing the
Heading Mode
4.2 Changing the Heading Mode
The radar picture is normally shown with your vessel’s dead ahead bearing
straight up, as indicated by the Ship’s Heading Marker at 0° relative bearing.
Thisis the Head Up orientation.
If heading informationis available via a SeaTalk or NMEA connection, you
can choose a different heading mode. In Course Up and North Up modeyou
can also selectrelative or true motion.
True and Relative Motion
Relativemotion is the default for the radar display. In relative motion your
own ship’s position remains fixed on the radar screen and all radar targets
move relativeto your own ship.
In true motion, fixedradar targets maintaina constantpositionon the screen,
whilst your own ship moves across the radar image at the appropriate speed
and heading. A map-likeimage is thus displayed, with all moving vessels
travelling in true perspective to each other and to fixed land masses.
As your ship’s position approaches the edge of the screen,the radar display is
automatically reset to reveal the area ahead of your ship. You can manually
reset your ship’s position at any time by pressingthe TRUE REL softkey twice.
Heading Modes
The heading modes are as follows:
Figure 4-1: Radar Heading Modes
• HeadUp: The radar picture is displayedwith the vessel’s currentheading
upwards.As the heading changes the picturewill rotate.
• NorthUp: Theradar pictureis stabilized and displayedwith north
upwards.As you change heading, the ship’s heading marker moves.
• Course Up: The radar pictureis stabilizedand displayed with the cur-
rentlyselectedcourseupwards.Asyouchangeheading,theship’sheading
markermoves. If you selecta new course, the picture resetsto displaythe
new course upwards.
D3988-1
Head Up
North Up Course Up
81186_3.book Page 2 Thursday, August 22, 2002 8:23 AM