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1. RADAR OPERATION
1-17
1.12 Presentation Modes
This radar has the following presentation modes:
Relative Motion (RM)
Head-up: Unstabilized
Head-up TB: Head-up with compass-stabilized bearing scale (True Bearing)
where the bearing scale rotates with the compass reading.
Course-up: Compass-stabilized relative to ship’s orientation at the time of
selecting course-up.
North-up: Compass-stabilized with reference to north
Stern-up: The radar image is rotated 180°. Graphics and relative and true
bearings are also rotated 180°.
True Motion (TM)
North-up: Ground or sea stabilized with compass and speed inputs.
Stern-up: Same as in relative motion.
1.12.1 Choosing presentation mode
By keyboard
Press the [MODE] key consecutively to choose presentation mode desired. The
PRESENTATION MODE box shows the current presentation mode. (See the
illustration below.)
By trackball
1. Roll the trackball to place the arrow in the PRESENTATION MODE box at
the top left corner of the screen.
HEAD UP RM*
* = Other modes:
STERN-UP, HEAD UP TB RM, COURSE UP RM,
NORTH UP RM, NORTH UP TM
PRESENTATION MODE box
2. Push the left button to choose mode desired.
Loss of gyrocompass signal
When the compass signal is lost, “HEADING SET” appears in red at the gyro
readout, the presentation mode automatically becomes head-up, all ARP and
AIS targets and map or chart are erased. After restoring the compass signal,
choose the presentation mode with the [MODE] key or the PRESENTATION
MODE box.