3. TARGET TRACKING (TT)
3-7
3.9 TT Symbols and Attributes
3.9.1 TT symbols
3.9.2 How to adjust symbol brilliance
1. Place the cursor on the [BRILL] box, then press the right button. The [BRILL]
menu appears.
2. Select [TT SYMBOL], then push the ADJUST knob. The settings can now be ad-
justed.
3. Rotate the ADJUST knob to select the desired brilliance, then push the ADJUST
knob to apply the setting.
4. Close the menu.
R
R
Automatically
acquired target
symbols shown.
For manually
acquired
targets, the
width of the line
for “steady
tracking” TT is
thicker than that
of the
automatically
acquired
targets.
Acquisition
zone
Target selected
for data readout
Reference
target
SymbolItem Status Remarks
Initial stage Broken circle around an echo to indicate
that the target is under acquisition and initial
stage of tracking, before steady-state
tracking.
Steady tracking Solid circle with vector indicating steady
state tracking (within three minutes after
acquisition.)
CPA alarm Plotting symbol (red) flashes to indicate the
target is predicted to come into CPA or
TCPA.
CPA alarm
acknowledge
Shown in red, and flashing stops after
CPA/TCPA alarm is acknowledged.
Lost target A red “X” is crossed through the TT symbol
to indicate that it is a lost target. Flashing
stops after lost target is acknowledged.
On selected target
After three
minutes,
changes to
Target data (range, bearing, course, speed,
CPA, TCPA, BCR, BCT, etc.) displayed in
information box.
On reference target Used to calculate own ship’s
over-the-ground speed (echo-referenced
speed) for ground stabilization.
On target passing
through operator-set
acquisition zone
Symbol is red and flashing.
Within one minute after acquisition (vector
still inreliable).
(flashing)
(flashing)
(flashing)