18-21  Section 18 Setting up the Operation Mode 
 
 
 
 
 
18.10 Setting AIS/TT Filters 
Select [Filter] in the classification pane. 
Set an AIS/TT filter in the setting dialog of the edit pane. 
By setting an AIS/TT filter, targets within the area can be displayed preferentially or only the inside of 
the area can be displayed. 
 
Setting Item  Description of Setting  Setting Value 
AIS 
When this is selected, filtering AIS target is 
performed in the operation mode being 
selected in Filtering mode. 
To enable: Select. 
To disable: Clear. 
TT 
When this is selected, filtering external target 
is performed in the operation mode being 
selected in Filtering mode. 
To enable: Select. 
To disable: Clear. 
Sector Filter
When this is selected, the Sector Filter is 
displayed on the screen and filtering is 
performed in the operation mode being 
selected in Filtering mode.
 
To enable: Select. 
To disable: Clear. 
Start Angle 
Set up the starting angle of the Sector Filter. 
The angle value indicates the relative bearing 
based on the ship's heading as the reference. 
When entry is confirmed, the entered value 
takes effect immediately. 
0.0 to 359.9° 
End Angle 
Set up the end angle of the Sector Filter. The 
angle value indicates the relative bearing 
based on the ship's heading as the reference. 
When entry is confirmed, the entered value 
takes effect immediately. 
0.0 to 359.9° 
   
 
 
Input boxes 
(display when 
created)