Tt Symbols And Attributes; Tt Symbols - Furuno FAR-2107(-BB) Operator's Manual

3. TARGET TRACKING (TT)
3.8

TT Symbols and Attributes

3.8.1

TT symbols

The symbols used in this equipment comply with IEC 62288.
Item Symbol
Automatically
acquired targets
(flashing)
(flashing)
Manually
acquired targets
(the width of the
line for "steady
tracking" TT is
thicker than that
of the auto-
matically
acquired target)
(flashing)
(flashing)
Acquisition zone
(flashing)
Target selected
for data readout
Reference target
After three
minutes,
changes to
○
R
3-10
Status
Initial stage
Steady tracking
CPA alarm
CPA alarm
acknowledge
Lost target
Initial stage
Steady tracking
CPA alarm
(collision course)
Lost target
On target passing
through operator-set
acquisition zone
On selected target
On reference target Used to calculate own ship's
R
Remarks
Broken circle around an echo to indicate
the target under acquisition and initial
stage of tracking, before steady-state
tracking.
Within one minute after acquisition (vector
still unreliable).
Solid circle with vector indicating steady
state tracking (within three minutes after
acquisition).
Plotting symbol (red) flashes to indicate
the target is predicted to come into CPA or
TCPA.
Shown in red, and flashing stops after
CPA/TCPA alarm is acknowledged.
A red X is crossed through the TT symbol
to indicate that it is a lost target. Flashing
stops after lost target alarm is acknow-
ledged.
Plotting symbol selected for a target
acquired manually is shown in bold broken
lines.
Within one minute after acquisition.
Manual plotting symbol in a bold solid
circle (within three minutes after
acquisition).
Plotting symbol (red) flashes to indicate
the target is predicted to come into CPA or
TCPA.
Flashing stops after CPA/TCPA alarm is
acknowledged.
A red X is superimposed on the TT symbol
to indicate a lost target. Flashing stops
after lost target alarm is acknowledged.
Symbol is red and flashing.
Target data (range, bearing, course,
speed, CPA, TCPA, BCR, BCT, etc.).
over-the-ground speed (echo-referenced
speed) for ground stabilization.