JRC JMA-9172-SA, Instruction Manual

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JMA-9172-SA Instruction Manual
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5.OPERATION OF TARGET TRACKING AND AIS
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5.6 TRACK FUNCTION
5.6
TRACK FUNCTION
5.6.1 Past Position (Past POSN)
Procedures
1) Left-click the past position display interval unit switching button
in the Target Information located at the upper right of the display,
and set a desired unit.
The past position display interval unit will be set to or .
2) Left-click the past position display interval switching button in
the Target Information located at the upper right of the display,
and set a desired track display interval.
The past position will be set.
The past position function
can display up to ten past
positions of a target under
tracking. The past position
display interval can be set to
specified time intervals of
0.5, 1, 2, or 4 minutes, or
specified range intervals of
0.1, 0.2, 0.5, or 1 nm.
The specified interval is displayed in the past position display interval switching
in Target Information located at the upper right of the display. When
is
displayed, the track display function is turned off.
The track mode operates in conjunction with the vector mode, and a true or
relative track is displayed. In relative vector mode, the relative tracks of the target
are displayed. In true vector mode, true tracks that are calculated from the relative
bearing, range, own ship's course, and speed are displayed.
The target is acquisition, past position of traced target is start plot. The AIS target
is displayed, past position of AIS target is start plot.
If the past position plotted time is short, the indicated past position duration may
not have achieved the specified time or range.
: Tracks are not displayed.
Numeric : Tracks are displayed at intervals of a specified value.
min NM
Off
Past position
display interval
Past position
true / relative
Past position
display interval unit
Off