4. AIS OPERATION
4-17
4.12.2 How to enable/disable the lost target alert
The [LOST TARGET] box, located at the bottom-right corner of the screen, enables
and disables the lost target alert.
Select the box with the cursor, then left-click to cycle through the settings in the follow-
ing order: [OFF] o [FILT] o [ALL] o [OFF]...
• [OFF]: Disable the alert.
• [FILT]: Enable the alert for all lost targets, excluding filtered targets.
• [ALL]: Enable the alert for all lost targets, including filtered targets.
Note: The filter setting is applied to both TT and AIS lost targets.
4.13 ROT Setting
You can set the lower limit of the ROT (Rate Of Turn) at which the heading line on
target symbols will point in direction which the vessel is turning.
ROT display
1. Open the menu.
2. Select [5 TT•AIS].
3. Select [4 TT•AIS SYMBOL].
4. Select [4 AIS ROT TAG LIMIT], then left-click. The settings can now be adjusted.
5. Spin the scrollwheel to adjust the ROT as appropriate, then left-click. The setting
range is 000.0°/min to 720.0°/min.
6. Close the menu.
OFF
Lost target
filter setting
Ship turning
to starboard
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