Instruction Manual

24
5
THE SIMPLIFIED ARPA OPERATION
D Course and speed vector
The vector indicates the target’s predicted, true or
relative course and speed.
• The vector time may change, depending on the setting in
the “Vector Time” item of the Target menu (p. 41).
• The tip of the vector shows the target’s predicted position
after the time selected in the “Vector Time” item of the
Target menu (p.41).
Vector
Current position
Vector time
Target’s predicted
positon
■ Descriptions of ARPA targets
D The status icons
The followings are the status icons for APRA targets.
Status Description
Focused target is displayed with the orange colored circle
Selected target is displayed with corners of the square
Selected, started to acquire automatically or manually.
Acquired target
Approximately 1 minute after the acquirement is started, the dotted circle icon changes to a
circle, and the vector of the vessel is displayed.
5
Target with a number
Displayed when the No. Display setting in the ARPA menu in the Menu screen is set to
“Select”or “all”.
CPA/TCPA alarm mark.
The target is close to within a minimum range and time.
• Alarm sounds and red colored mark blinks until acquiring the target.
Push [ACQ]/[
] to acquire the target, or push [CLEAR]/[ ] to cancel the alarm.
Indicates the tracking of a target is lost.
• Alarm sounds, red cross blinks, and “ARPA target lost” is displayed.
Push any key to cancel the alarm.
D Plots (ARPA)
The plot displays the target’s past positions as 5 dots,
during each specied tracking interval.
• The target track interval may change, depending on the
setting in the “Track Interval” item of the Target menu.
(p. 41)
Plots Status
Target is going straight
Target is turning right
Target is reducing speed (dots are
closer together behind the target)
Target is increasing speed (dots
are father apart behind the target)
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MR-1010RII / Page 13-29