JMA-9100 Instruction Manual > 3.BASIC OPERATION > 3.4 GENERAL RADAR OPERATION
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3.4.5 Switch Azimuth Display Mode (AZI MODE)
Select the bearing for the radar video to be displayed on the radar display.
Procedures
1) Left-click the AZI Mode button located at the lower left of the
display.
The bearing display modes are switched.
ā ā
True Bearing Mode [North Up]
The video is displayed so that the zenith of the PPI (0Ā° on range rings) points to the due
north. Fixed targets do not flicker and are easily identified on the chart, and the true bearing
of a target can easily be read out.
Relative Bearing Mode [Head Up]
The video is displayed so that the shipās heading line points to the zenith of the PPI (0Ā° on
range rings). Since targets are displayed in their directions relative to the shipās heading
line, the operator can view the video in the same field of view as in operating the ship at sea.
This mode is suitable for watching over other ships.
Course-up Bearing Mode [Course Up]
By setting the course-up mode, own ship's course is fixed so that it is located on the zenith of
the radar display (0Ā° on range rings). In the same way as in the North-up mode, fixed targets
do not flicker, and are stabilized even if the ship is yawing. The bearing of the heading line
varies by the same shift of own shipās course. To change the course, press the [AZI
MODE] key several times again to select the course-up mode so as to set a new course.
H Up N Up C Up
HL
North-up mode
Head-up mode Course-up mode
HLNorth
HL
North
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