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5.3 AIS OPERATION
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5.3.8 Setting AIS Filter (AIS Filter Setting)
About an AIS filter
The setting of an AIS filter enables the priority display of AIS targets in the area. The filter is initially set in a
circle having a radius of 20 [nm] from the own ship’s position. If 51 or more targets exist in the filter range,
they are displayed according to the priority explained in Section 5.4.11 Displaying AIS Symbols - Maximum
number of targets and the display priority.
Type of AIS filters (Filter Type)
There are the following three types of AIS filters:
1) RANGE ........A filter is set in a circle with a set range as the radius.
2) SECTOR.......A filter is set in a sector formed by two bearings with the bow as reference.
3) ZONE ...........A filter is set in a zone formed by two bearings and two ranges with the bow as reference.
Procedures 1 Press [ATA MENU] key.
Press [2] key.
Press [6] key.
The ATA Filter Setting menu will appear.
2 Press [1] key.
The Filter type selection screen will appear.
3 Select the AIS filter type to be set,
pressing the numeric key.
The selected AIS filter type will be
determined.
AIS Filter Setting
1. Filter Type
RANGE
2. Make AIS Filter
3. Filter Display
ON
4. ENT
0. EXIT
1.
RANGE
2. SECTOR
3. ZONE
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