3 Basic Operation of ECDIS 3-188
Note:
• Tracking spots of AIS/TT are cleared by changing screen, e.g. Zooming In/Out.
* In case of built-in Target Track processing co-processor.
Acquisition relation menu of Target Track becomes able to be selected when making [Internal Target
Tracking function] ON.
Acquisition relation menu of Target Track becomes invalid when making [Internal Target Tracking
function] ON.
3) AIS Filter
High Priority filter for display:
• Ring: The AIS targets within the specified distance are displayed.
It changes to edit mode when left-click onto the "Ring" line.
• Sector: The AIS targets within the specified bearing with the heading as the center are
displayed.
It changes to edit mode when left-click onto the "Sector" line.
Note:
• Maximum number of visible targets are 300. For over 300 targets, at first the targets
attributed danger have priority to show. And secondary the targets without danger are
shown the nearest from own ship one by one.
Sector area
Heading line
Ring area
Own ship
120nm
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