Furuno NavNet TZtouch3 TZT9F Operator's Manual page 9

CPA/TCPA alarm
The CPA/TCPA alarm releases an aural alarm and a visual alarm (message in Status bar) when both the CPA
and TCPA of a tracked target are equal to or lower than the CPA/TCPA alarm setting.
CPA: Closest point of approach
TCPA: Time to closest point of approach
How to set the CPA/TCPA alarm How to set the CPA/TCPA alarm
Tap
Home screen
OR
How to acknowledge the CPA/TCPA alarm How to acknowledge the CPA/TCPA alarm
Tap the alarm message (top of screen) to acknowledge the alarm and stop the aural alarm.
CPA Line
The CPA Line feature gives you a visual line that depicts the closest point of approach to a selected ARPA target. To
use this feature, own ship position and heading data are required.
How to enable the CPA Line feature
Tap
Home screen
How to show the CPA Line
Tap an ARPA target (condition: target's CPA/TCPA must be a positive value) on the radar or chart plotter.
Tap
Tap
CPA/TCPA Alarm
Tap
CPA Line
ARPA target
Own ship
Tap
Set the alarm value, then tap [ ].
Tap
CPA Graphic Display
Tap
5
9 9
ON
Tap
Tap