3.4 General Radar Operation
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3.4.5 Switch Azimuth Display Mode [AZI MODE]
Select the azimuth for the radar video to be displayed of the display.
Procedures 1 Press the [AZI MODE] key.
The azimuth display modes are switched.
N Up ⇒ C Up ⇒ H Up ⇒ N Up
3
North-up Mode [N Up]
The video is displayed so that the zenith of the PPI (0° on bearing scale) 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.
Head-up Mode [H Up]
The video is displayed so that the ship’s heading line points to the zenith of the PPI (0° on bearing
scale). Since targets are displayed in their directions relative to the ship’s 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 Mode [C Up]
By setting the course-up mode, own ship's course is fixed so that it is located on the zenith of the
display (0° on bearing scale). 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 ship’s 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.
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