Lost Target; How To Set The Lost Target Filter - Furuno FAR-2218-BB Operator's Manual

3. TARGET TRACKING (TT)
3.8

Lost Target

Targets not detected in nine consecutive scans become "lost targets". A lost target is
shown in the display with a flashing red " ". Flashing stops after lost target alert is ac-
knowledged. Further, the alert box shows the indication "TT TARGET LOST" in or-
ange characters and the audible alert sounds. The symbol disappears when the alert
is acknowledged.
If you are in an area where tracked targets are lost frequently, you may want to disable
the lost target alert against tracked targets by maximum range.
3.8.1

How to set the lost target filter

You can set the lost target alert to sound against lost targets that are within a specific
range. To set the criteria, use the procedure below.
1. Open the menu.
2. Select [5 TT•AIS].
3. Select [6 TT].
4. Select [7 TT LOST TGT FILTER].
5. Select [MAX RANGE].
6. Select [ON]. The settings can now be adjusted.
7. Spin the scrollwheel to adjust the setting as required,
then left-click to apply the setting.
8. Close the menu.
Note: Reference targets are not affected by this filter.
3.8.2 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]
• [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.
3-8
[FILT] [ALL] [OFF]...
OFF
Lost target
filter setting