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[Antenna Longitudinal Po-
sition]
[Antenna Lateral Position
(-Port)]
[Auto Tuning]
[Tuning Source]
[Manual Tuning]
[Radar Monitoring]
[Radar Optimization]
[ARPA Advanced Set-
tings]
How to align the antenna heading
You have mounted the antenna unit facing straight ahead in the direction of the bow.
Therefore, a small but conspicuous target dead ahead visually should appear on the
heading line (zero degrees).
You may observe a minor bearing error on the display. This is due to the difficulty in
orienting the radar accurately. The following adjustment will compensate for the error.
a
Antenna oriented to port
Antenna oriented to starboard
Referring to the figure on the right, enter the
radar antenna positioning bow-stern (Longi-
tudinal) and port-starboard (Lateral) posi-
tion from the origin.
Enable/disable auto tuning for the connected radar.
For dual-range display, select the range to use as the man-
ual tuning source.
Manually tune the radar. Not available when [Auto Tuning]
is enabled.
Display various information regarding the connected radar.
Automatically adjust magnetron output and tuning for the
connected radar.
Note: Be sure to perform [Radar Optimization] after replac-
ing the magnetron.
Do not change these settings.
Correct bearing
(relative to heading)
Target
330
320
310
300
290
280
270
260
250
240
230
220
210
Picture appears
deviated clockwise.
Apparent position
of target
b
Target
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
Picture appears
deviated counterclockwise.
9
Description
a
000
350
010
020
340
030
040
050
060
070
080
090
Apparent
100
position
110
of target
120
130
140
150
200
160
190
180
170
b
000
010
350
020
030
040
050
060
070
080
090
Correct
100
bearing
110
120
(relative to
130
140
heading)
150
160
190
170
180
2. INITIAL SETUP
Origin
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