How To Manually Acquire A Target; How To Automatically Acquire A Target - Furuno NavNet TZtouch3 Series Operator's Manual

6.28.2

How to manually acquire a target

You can manually acquire a target from both the radar display and the radar display
overlay. Up to 30 targets can be acquired manually. 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 (default setting). 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.
ARPA Symbol
Color: green
Color: green
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.
6.28.3

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. To disable the buzzer, set
[Alarm] to [OFF] in the pop-up menu at step 2 in the below procedure.
1. Create a guard zone referring to section 6.14.
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.
3. Turn on [Auto Acquire].
The dotted lines for the guard zone turn into solid lines.
Meaning
At acquisition of the tar-
get.
A lost target is indicated
by a diamond symbol,
created from two equal
triangles.
ARPA Symbol
30 s after the acquisi-
Vector
tion, the plotting symbol
changes to a small cir-
cle, which indicates
Color: green steady-state tracking. A
vector (dashed line)
shows the direction of
the target.
A target that meets the
criteria of the CPA/
TCPA alarm is changed
to a dangerous target.
Color: red
6. RADAR
Meaning
6-35