1. RADAR OPERATION
1-17
1.12 Presentation Modes
This radar has the following presentation modes:
Relative Motion (RM)
Head-up: Unstabilized
STAB head-up: 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, STAB HEAD UP 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 yellow-orange 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 alert with the [ALARM
ACK] key or the ALERT box and check the GYRO data.
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