10Cpa Graphic Display - Furuno NAVNET TZ2 TZTL12F Operator's Manual

6. RADAR
6.25.10 CPA graphic display
The CPA graphic display shows the CPA between own vessel and the selected ARPA
(or AIS) target with a line, called the "CPA line." You can use the CPA line to see the
CPA between your vessel and ARPA targets. Whenever you change your vessel's
course and speed, you can see the new positional relationship between your vessel
and ARPA targets.
To activate or deactivate the CPA graphic display, open the [Targets] menu and turn
[CPA Graphic Display] on or off.
To find the CPA of a ARPA target on the radar or
chart plotter display, tap the ARPA target. The CPA
line connects with the position of your vessel and
the CPA of the ARPA target. The line is the same
as the color of the target symbol. To find the CPA
of another ARPA target select it, and the CPA line
moves to the newly selected target. (Only only line
can be displayed at a time between ARPA and AIS
targets.) The example at right shows the appear-
ance of the CPA line on the radar display.
If the CPA/TCPA alarm is generated while the CPA line is in use, the CPA line and the
selected target symbol turn red.
The CPA graphic display is not available in the following conditions:
• The CPA line is turned off. The line can be turned off by tapping the CPA line (or
own ship icon* or target) to show the pop-up menu, then select [CPA].
* Chart plotter display only
• The feature is turned off.
• The TCPA is a minus (-) value.
• The target is a lost target.
• The CPA and TCPA of the target cannot be calculated (no speed or heading data
for own ship).
6-34
Own ship
ARPA target
5
CPA line