Furuno FAR-2107(-BB) - Manual (Page 72)

1. RADAR OPERATION
1-50
The relationship between trail restart and trail copy depends on their status, as
shown in the table below.
Trail restart Trail copy Trail status
ON ON Range changed while trail is ON: Trails continue on
targets within previous range.
ON OFF Range changed while trail is ON: Trails within the
previous range are erased then trails are restarted.
OFF OFF/ON • Range changed while trail is ON: New trails not
initiated. (Trails from previous range are stored in
memory.)
• Range returned to previous range: Trails continues
on targets stored in memory.
• Trails turned ON: Trails stored in memory are
erased. (See section 1.30.10.)
(Trails stored in the memory are erased and trails are
then initiated on new range.)
1.30.5 Trail level
The level (intensity) of the afterglow that extends from radar targets may be
selected as below.
1. Right-click the TRAIL MODE box to display the TRAIL menu.
2. Select 4 TRAIL LEVEL.
3. Select level desired. The higher the number the greater the intensity of the
afterglow.
4. Push the right button to close the menu.
1.30.6 Narrow trails (B, C and W types)
Target trails may be painted with thinner lines if desired. This can be useful when
there are a lot of targets on the screen and it is hard to distinguish one from
another.
1. Right-click the TRAIL MODE box to display the TRAIL menu.
2. Select 3 NARROW TRAIL.
3. Select OFF, 1 or 2 as appropriate. "2" is thinner than "1".
4. Push the right button to close the menu.