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Presentation mode,
representative display
Description
Head-up Mode
A display withouth azimuth stabilization in which
the line connecting the center with the top of the
display indicates own ship's heading.
The target pips are painted at their measured dis-
tances and in their directions relative to own ship's
heading.
A short line on the bearing scale is the north marker
indicating compass north. A failure of the gyro
input will cause the north marker to disappear and
the GYRO readout to show asterisks (***.*) and the
message SET HDG appears on the screen.
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Heading
line
North
marker
Course-up Mode
An azimuth stabilized display in which a line connect-
ing the center with the top of the display indicates own
ship's intended course (namely, own ship's previous
heading just before this mode has been selected).
Target pips are painted at their measured distances
and in their directions relative to the intended course
which is maintained at the 0-degree position while the
heading marker moves in accordance with ship's
yawing and course changes. This mode is useful to
avoid smearing of picture during course change. After
a course change, press the [CU, TM RESET] key to
reset the picture orientation if you wish to continue
using the course-up mode.
Head-up TB (True Bearing) Mode
Radar echoes are shown in the same way as in the
head-up mode. The difference from normal head-up
presentation lies in the orientation of the bearing
scale. The bearing scale is compass stabilized, that
is, it rotates in accordance with the compass signal,
enabling you to know own ship's heading at a
glance.
This mode is available only when the radar is inter-
faced with a gyrocompass.
The bearing scale rotates with
a compass signal.
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North
marker
Heading
line
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010
020
030
040
050
060
070
080
090
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110
120
130
140
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160
170
180
190
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210
220
230
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250
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270
280
290
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340
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North
marker
Heading
line