Suppressing Radar Interference - Furuno Marine Radar Operator's Manual

Continuous trail
The maximum continuous trail time is 99 min-
utes and 59 seconds. When the elapsed time
clock counts up to that time the elapsed time
display is reset to zero and trail begins again.
Cancelling echo trail
Select "OFF (deactivate)" at "ECHO TRAIL"
on the menu.
Changing trail attributes
Trail gradation and trail time can be selected
on the OTHERS menu.
Table 3-1 Trailing attributes
Item in
OTHERS
menu
Trails can be shown in
single or multiple
gradations. Multiple paints
trails getting thinner with
time just like the afterglow
Trail
on an analog PPI radar.
Tone
Trail time can be set for 15
sec., 30 sec., 1 min., 3 min.,
Trail Time 6 min., 15 min., 30 min., or
continuous.
3.5 Suppressing Radar
Interference
Radar interference may occur when near an-
other shipborne radar operating in the same
frequency band as your radar. Its on-screen
appearance is many bright dots either scat-
tered at random or in the form of dotted lines
extending from the center to the edge of the
display. Figure 3-5 illustrates interference in
the from of curved spokes. Interference ef-
fects are distinguishable form normal echoes
because they do not appear in the same place
on successive rotations of the antenna.
14
Description
Single
Multiple
Figure 3-5 Radar interference
Four levels of interference are available, in-
cluding off; IR1, IR2, IR3 and OFF. IR3 pro-
vides the highest level of rejection.
1. Press the [MENU] key.
2. Select "OTHER MENU" and press the
[ACQ/ENTER] key.
[ OTHERS ]
Select item by omnipad
and press ENTER key.
¡. Panel Dimmer
1
2 . Mark Brill 1
3 . HD Mark 1
4 . Characters 1
5 . Trail Tone Single
6 . Int Reject Off
7 . Pulselength Short
8 . Noise Reject Off
9 . Trail Time 15S
3M 6M
10. Tune Auto
11. Disp Data Off
12. WPT Mark Off
13. EBL Ref Rel
14. VRM Unit nm
15. Watchman Off
16. STBY Disp Norm
17. Guard Mode In
18. Own Position L/L
19. Cursor Posi R/B
20. Alm sense LV Low
21. Dead Sector Off
22. Range
1/8
2 £
23. Self Test
24. Installation Setup
Figure 3-6 OTHER MENU
¢
2 3
¢
2 3
¢
2 3
¢
2 3
Multi
1 2 3
Long
On
30S 1M
15M 30M Cont
Manu
Nav ARP All
On
True
km sm
5M 10M 20M
Econo Nav
Out
TD
L/L
Mid Hig
On
1/2 3/4 1
1/4 1.5
⁄ 2 ‹ 6
16 ¤ 4
§
8
4