Saving, Copying Target Trails - Furuno FAR-2807(-D) series Operator's Manual

1.30.4

Saving, copying target trails

By turning on the functions TRAIL RESTART and TRAIL COPY, you may
continue painting target trails whenever the range scale is changed. The amount
of range change determines how the radar paints trails. See the table below for
details. Note however that if the previous range is restored within 10 seconds
and the amount of range change is within 1/3, trails continue as before.
If trails become difficult to view, you may delete them. For details, see section
1.30.10.
Amount of range change
Large (ex. 3 nm→12 nm)
Within 1/3 of previous range
(ex. 3 nm→1.5 nm)
Within 1/4 of previous range
(ex. 3 nm→0.75 nm)
1. Right-click the TRAIL MODE box to display the TRAIL menu.
2. Select 5 TRAIL RESTART.
3. Select ON or OFF as appropriate.
ON: Trails start extending on the newly selected range.
OFF: Trails extend only on the range where they were initiated.
4. Select 6 TRAIL COPY.
5. Select ON or OFF as appropriate.
6. Push the right button to close the menu.
How trails are processed
Trails continue on targets that were within the
previous range scale. Trails are not initiated for
targets that were not within the previous range.
Trails continue on targets that were in the
previous range scale.
Trails are restarted.
No trail generated
for target not within
previous range
(a) Previous range
1. RADAR OPERATION
(b) New range
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