Setting Ais Filter (Ais Filter Setting) - JRC JMA-5212-4/6 User Manual

5.3.8 Setting AIS Filter (AIS Filter Setting)

About an AIS filter
Once the AIS filter is set, only the AIS targets that are inside the filter area are displayed (setting can be made
such that sleeping targets outside the AIS filter will not be shown).
The filter is initially set in a circle having a radius of 20 [nm] from the own ship's position. If 131 or more
targets exist in the filter range, they are displayed according to the priority explained in "Types and Definitions
of AIS Target Symbols" of Section 5.1.2 "Definitions of Symbols."
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.
Procedure 1
2
3
Press [TT MENU] key.
Press [2] key.
Press [6] key.
The TT Filter Setting menu will appear.
Press [1] key.
The Filter type selection screen will appear.
Select the AIS filter type to be set,
pressing the numeric key.
The selected AIS filter type will be determined.
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