Furuno FAR-3230SW-BB Manual De Usuario

4.  AIS OPERATION

You can show 5 or 10 past position points per AIS target. Right-click the past position 
indication then click [Past POSN Menu] to show that menu. Set [6 AIS PAST POSN 
POINTS] to [5] or [10].

AIS targets vector can be displayed relative to your ship's heading (relative) or with 
reference to the North (True). 

Vector time (or the length of vectors) and presentation mode can be set at the bottom-
right position on the screen. For further information, see section 3.9.

An AIS-equipped ship is usually displayed by two symbols on the radar display. This 
is because the AIS ship position is measured by a GPS navigator (L/L) whereas the 
radar detects the same ship by PPI principle (range and bearing relative to own ship 
radar antenna). 

To avoid the presentation of two target symbols for the same physical target, use the 
"association" function. If target data from both AIS and TT are available and if the as-
sociation criteria are fulfilled, either the AIS or TT symbol is presented according to the 
association method selected.

Association will not happen between AIS and TT if the AIS target is sleeping or the AIS 
target is lost.

All association settings, including ON/OFF, can also be controlled from the chart for 
radar mode, with the [TT/AIS] page in the [Overlay/NAV Tools] box. All settings are 
mutually shared.

Click the location circled below to show "<" to select AIS symbol for associated target, 
or ">" to select TT symbol for associated target. This setting overrides the correspond-
ing item on the [TT•AIS] menu. To turn off association, click the location to remove the 
arrow.

Note: You can also select the method by right-cllcking the loca-
tion. Click desired association method.

<

<

>

Association: OFF

Association: TT
Association: AIS
[Association Menu]