Furuno FAR-2107(-BB) - Manual (Page 74)

1. RADAR OPERATION
1-52
PI
lines
1.30.11 Preventing sea clutter in true trails
You can prevent the display of sea clutter in true trails about your ship to clear
the radar picture. Your ship's trails can also be shown or hidden.
1. Right-click the TRAIL MODE box to show the TRAIL menu.
2. Select 7 OS TRAIL and push the left button.
3. Roll the scrollwheel to select OFF, 1 or 2 as appropriate, referring to the table
below.
Option
Show own ship's trail Prevent sea clutter in true trails
OFF No No
1 Yes Yes
2 No Yes
4. Push the right button to close the menu.
1.31 PI (Parallel Index) Lines
PI lines are useful for keeping a constant
distance between own ship and a coastline or
a partner ship when navigating. Up to six sets
of PI lines are available depending on the
maximum number of PI lines selected on the
menu.
Max. 1 PI line: Six sets of PI lines (PI1 - PI6)
Max. 2, 3 or 6 PI lines: Four sets of PI lines
(PI1 – PI4)
You may control the orientation and interval of the PI lines from the PI line box,
which is at the lower left corner.
1.31.1 Displaying, erasing PI lines
By keyboard
1. With the menu closed, press the [INDEX LINE] key. The guidance box shows
"DISP PI LINE/."
2. While watching the PI line number box, press and hold the [INDEX LINE] key
to select a PI line. Press the key again to display or erase the PI line
selected.
PI line number Status (ON or OFF) PI 1 ON
032.0
°T
5.60NM
PI line orientation
PI line interval
(Boxes not shown when
PI line is OFF.)
PI line boxes
By trackball
1. Select the PI line number box and use the trackball to select a PI line
number.
2. Push the left button to turn the PI line on or off as appropriate.