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6. RADAR
6-23
6.23.2 How to manually acquire a target
You can manually acquire a target from both the radar display and the radar display
overlay. Tap the target to acquire to show the pop-up menu, then tap [Acquire].
After you acquire a target, the radar marks the target with a broken square and a vec-
tor appears within 30 s. The vector indicates the direction of the target. Within 90 s
after you acquire the target, the first tracking step is finished and the target is tracked
continuously. At this point, the broken square changes to a solid circle.
Note 1: For successful acquisition, the target must be within 0.05 to 16 NM from your
ship and not hidden in sea or rain clutter.
Note 2: When the capacity for manual acquisition is reached, you cannot acquire
more targets. Cancel tracking of non-threatening targets to acquire additional targets
manually.
6.23.3 How to automatically acquire a target
Any target that enters the ARPA acquisition area is acquired and tracked automatical-
ly. When a target enters the area, the buzzer sounds.
1. Create a guard zone referring to section 6.13.
2. Tap a line on the guard zone to show the pop-up menu. Turn on [Auto Acquire].
The dotted lines for the guard zone turn into solid lines.
ARPA
Symbol
Meaning
At acquisition of the target.
30 s after the acquisition, the plotting symbol changes to a small circle,
which indicates steady-state tracking. A vector appears to show the direc-
tion of the target.
A lost target is indicated by a diamond symbol, created from two equal tri-
angles.