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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)
Land objects and sea are stationary. Requires compass and speed data.
1.12.1 Choosing presentation mode
By keyboard
Press the [MODE] key consecutively to select presentation mode desired. The
PRESENTATION MODE box shows the current presentation mode. (See the
illustration below.)
By trackball
Left-click the PRESENTATION MODE box at the top left corner of the screen to
select a presentation mode.
HEAD UP RM*
* = Other modes:
STERN-UP, HEAD UP TB RM, COURSE UP RM,
NORTH UP RM, NORTH UP TM
PRESENTATION MODE box
Loss of gyrocompass signal
When the compass signal is lost, "GYRO" appears in red in the Alert Box, the
presentation mode automatically becomes head-up, and TT and AIS targets,
map and chart are erased. After restoring the compass signal, "HEADING SET"
appears in the Alert Box. Then, stop the alarm with the [ALARM ACK] key or the
ALARM ACK box and check the GYRO data.