4. AIS OPERATION
4-19
Note: If some menu item on the [AIS LOST FILTER] menu is set to [ON], the fol-
lowing message appears at the bottom of the menu.
"Some lost warning function is disabled"
7. Close the menu.
4.12.2 How to enable/disable the AIS lost alert
The [LOST TARGET] box, located at the bottom-right corner of the screen, enables
and disables the lost alert.
Select the box with the cursor, then left-click to cycle through the settings in the follow-
ing order: [OFF] → [FILT] → [ALL] → [OFF]...
• [OFF]: Disable the lost alert. [OFF] indication is shown in yellow. [OFF] indication is
shown in yellow.
• [FILT]: Get the alert against the objects whose criteria meet the settings made in
section 4.12.1. If [2 MAX RANGE] on the [TT LOST TGT FILTER] menu is set to
[ON] (see section 3.8.1) or some menu item on the [AIS LOST FILTER] menu is set
to [ON], [FILT] indication changes to yellow.
• [ALL]: Get the alert against all lost objects.
Note: The [LOST TGT] setting is shared commonly between TT and AIS.
4.13 ROT Setting
You can set the lower limit of the ROT (Rate Of Turn) at which the heading line on AIS
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.
Ship turning
to starboard
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