Furuno FMD-3200 Operator's Manual page 266

16. RADAR OVERLAY
6) [Heading Align]: Some positioning error may occur when the antenna unit is
installed. This error can be compensated from the ECDIS.
Antenna oriented to port
Antenna oriented to starboard
1) Set the chart scale on the ECDIS between 1:2,000 and 1:4000. Select a
2) Use the EBL control on the ECDIS to bisect the target echo.
3) Read the target bearing.
4) Measure bearing of the target on the chart to calculate the difference be-
5) Enter the difference found in step 4) in the [Heading Align] box.
7) [Video Level Adjust]: When the signal cable is very long, the video amplifier
input level decreases, shrinking target echoes. To prevent this, confirm (and
adjust if necessary) video amplifier input level.
8) Click the [Save] button to save the settings.
9) Click the [Close] button to close the [RCB Detail Settings] dialog box.
16-6
Correct bearing
(relative to heading)
a
Target
Apparent position
of target
b Target
target echo which is near the radar heading line on the ECDIS.
tween the actual bearing and apparent bearing on the radar screen.
a
000
350 010
020
340
330 030
320
040
310 050
060
300
290 070
280 080
090
270
260
100
250
110
240
120
230
130
140
220
210
150
200
160
190 170
180
Picture appears
deviated clockwise.
b
000
350 010
340 020
330 030
320
040
310 050
300 060
290 070
280
080
270 090
260
100
250
110
240
120
230
130
220 140
210 150
200 160
190 170
180
Picture appears
deviated counterclockwise.
Apparent
position
of target
Correct
bearing
(relative to
heading)