6. RADAR
6-24
2. Select [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.
6.26.3 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. Select [Guard Zone] from the RotoKey menu.
2. Select [Visible]. The guard zone with dotted lines appears on the screen.
3. Select [Guard Zone] from the RotoKey menu.
4. Select [Resize]. Four circles appear at the four corners of the guard zone.
5. Move the circles to set the guard zone.
Note: To set a 360-degree guard zone, set the same bearing for all four circles.
6. Select [End Resize] at the top right-hand corner of the screen.
7. Select [Guard Zone] from the RotoKey menu.
8. Select [Auto Acquire]. The dotted lines for the guard zone turn the solid lines.
9. Select [Guard Zone] from the RotoKey menu.
10. Select [Alarm].
To erase the guard zone, deselect [Alarm], [Auto Acquire], [Visible] in the [Guard
Zone] menu in order.
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.
To Next Page
Loading...
