3. TARGET TRACKING (TT)
3-5
How to acknowledge the acquisition zone audio alarm
Press the ALARM ACK key, or click the [Alert] box.
Acquisition zone stabilization
The acquisition zone may be referenced to heading or North. Open the menu then se-
lect the [TT•AIS] and [1 ACQUISITION ZONE] menus. Set [1 AZ STAB] to [STAB
HDG] or [STAB NORTH] as appropriate. For a polygon acquisition zone, stabilization
can be selected to [2 AZ POLYGON].
3.5 Manual Acquisition
This radar can manually acquire and track a maximum of 100 targets.
The number of automatically and manually acquired targets is determined by the set-
ting of [TT SELECT] in the [TT] menu.
3.5.1 How to set manual acquisition conditions
1. Right-click the TT mode indication then select [TT Menu] to show the [TT] menu.
2. Select [1 TT SELECT] and the acquisition condition.
3. Close the menu.
3.5.2 How to manually acquire a target
Acquire a target from the Control Unit
Use the trackball to put the cursor on the target you want to acquire. Push the ACQ
ACT key.
Acquire a target by the trackball module
1. When the target to acquire and the AIS symbol overlap one another, push the right
button to show the context-sensitive menu then select [Target Data/ACQ/ACT]
and [TT Only] to acquire the target.
2. Put the cursor on the target to acquire then push the left button.
The plotting symbol is drawn by a dashed circle during the initial acquisition stage. A
vector appears approximately one minute after acquisition. The vector indicates the
motion trend of the target. If the target is consistently detected for three minutes, the
plotting symbol changes to a solid circle. If acquisition fails, the target symbol blinks.
Note 1: For successful acquisition, the target should be within 24 NM (or 32 NM, de-
pending on initial setting) from own ship and not obscured by sea or rain clutter.
Note 2: You are alerted when the capacity of manual acquisition is 95% and 100%.
These alerts are Alert 524 (ALF format: 10190,5) "TT MAN ACQ 95%" and Alert 525
Menu setting Acquisition condition
[MANUAL 100] 100 targets manually, Not available for auto acquisition
[MANUAL 75 • AUTO 25] 25 targets automatically, 75 targets manually
[MANUAL 50 • AUTO 50] 50 targets automatically, 50 targets manually
[MANUAL 25 • AUTO 75] 75 targets automatically, 25 targets manually
[AUTO 100] 100 targets automatically, Not available for manual ac-
quisition
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