Furuno TZTL12F User Manual

6. RADAR
6-31
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 line to monitor speed
and heading changes of another vessel, which makes it useful as an anti-collision aid,
especially in congested waters. Requires own ship and position data.
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
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 anoth-
er ARPA target select it, and the CPA line moves to
the newly selected target. (Only only line can be dis-
played at a time between ARPA and AIS targets.)
The example at right shows the appearance 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].
* 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).
CPA line
Own ship
5
ARPA target

Furuno TZTL12F Specifications

General

Brand	Furuno
Model	TZTL12F
Category	Monitor
Language	English