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2. RADAR, CHART RADAR OPERATION
2-30
2.22.7 Target trail attributes on the TRAIL menu
Note: [SUPPRESS TRAIL AROUND OS] is automatically turned on when [OS TRAIL]
is activated. The possible ON/OFF combinations between [OS TRAIL] and [SUP-
PRESS TRAIL AROUND OS] are as shown in the table below.
2.23 Parallel Index (PI) Lines
PI lines are useful for keeping a constant distance be-
tween own ship and a coastline or a partner ship when
navigating. Up to six sets of PI lines are available depend-
ing on the maximum number of PI lines selected on the
menu.
Control of the orientation and interval of the PI lines is
done from the PI line box, which is at the bottom-left posi-
tion.
[TRAIL GRAD]: The afterglow of the target trails can be
shown in a single tone or gradual shading.
[TRAIL COLOR]: The trail color can be selected from the
colors shown in the left figure. This feature is not available
with the IMO or A type.
[TRAIL LEVEL]: The level (intensity) of the afterglow that
extends from radar targets can be adjusted. The higher
the number the greater the intensity of the afterglow.
[OS TRAIL]: Show or hide trail for own ship.
[SUPPRESS TRAIL AROUND OS]: You can prevent the
display of sea clutter in true trails about your ship, to clear
the radar picture.
Setting ON/OFF pairings available
OS TRAIL OFF ON OFF ON
SUPPRESS
TRAIL AROUND
OS
OFF ON ON OFF
Remarks No OS trail - - Setting not
possible
Monotone
(SINGLE)
Gradual shading
(MULTI)
PI
lines
PI line no.
PI line status indication (ON, OFF)
PI line angle
PI line reference
PI line interval
Minimize button
T