How To Set An Automatic Acquisition Zone - Furuno FCR-21x9-BB Operator's Manual

3. TARGET TRACKING (TT)
3.4.2

How to set an automatic acquisition zone

You can set an automatic acquisition zone to automatically track any targets entering
the zone. The acquisition zone can be fan-shaped or polygonal. For the fan-shaped
zone, the range is fixed at a 3-6 NM (width 0.5-1.0 NM). The polygon zone can be set
within the range of 0.125 NM to 120 NM. (However, automatic acquisition occurs only
between 0.1 to 24 NM (or 32 NM)). The maximum tracking range is set during the in-
stallation.
When a target enters an acquisition zone, the following occurs:
• the buzzer sounds
• the Alert 521 "TT New Target" appears in the [Alert] box
• the symbol of the target is red and flashes
• the AIS function is automatically turned on if it is off
1. Click one of the boxes AZ1 or AZ2 at the right side of the screen. "AZx SET" (x=1
or 2) appears in the box.
2. Click point A.
3. Click point B. The box now shows "AZx WORK".
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Note 1: You are alerted when the capacity for automatic acquisition is 95% and 100%.
These alerts are 522 "TT Auto ACQ 95%" and 523 "TT Auto ACQ 100%".
Note 2: If the range scale is changed to less than half of the acquisition zone, the AZ
box shows "OUT." If the left button is pushed in this state, the acquisition alarm zone
goes into "sleep" state (inactive).
How to sleep, deactivate an acquisition zone
Use the trackball to select the appropriate AZ box. Sleep or deactivate the acquisition
zone as appropriate:
Sleep acquisition zone: Push the left button momentarily to remove the acquisition
zone from the screen. The indication in the AZ box changes from "WORK" to "SLEEP."
To reactivate and display the acquisition zone, repeat this procedure to display
"WORK."
Deactivate acquisition zone: Click applicable AZ box and select [Off].
How to acknowledge the acquisition zone audio alarm
Press the ALARM ACK key, or click the [Alert] box.
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Acquisition zone
Other acquisition zone examples
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Point A
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Point A
Point B