6. Radar
6-31
6.27.3 How to Display Target Data
You can find the course, speed, range, bearing, etc. of an ARPA target. For simple
data, put the cursor on the ARPA target. For detailed data, put the cursor on the target
then push the left-click button.
6.27.4 How to Stop Tracking Targets
You can stop tracking ARPA targets separately or all together from the ARPA pop-up
menu. Tracking of all targets can also be stopped from the Radar pop-up menu.
1. Use the CursorPad to put the cursor on the ARPA target.
2. Right-click to show the ARPA pop-up menu.
3. Use the RotoKey to select [Cancel Target] or [Cancel All Targets] then push the
RotoKey.
Tracking is cancelled and targets are erased from the screen.
6.27.5 How to Clear a Lost Target
Put the cursor on a lost target then press the right-click
button to show the Lost Target pop-up menu. Use the
RotoKey to select [Clear lost] or [Clear all Lost Targets].
6.27.6 CPA/TCPA Alarm
The CPA/TCPA alarm helps warn of possible collision conditions. The ARPA continu-
ously monitors the predicted range at the Closest Point of Approach (CPA) and pre-
dicted time to CPA (TCPA) of each tracked target. When the predicted CPA or TCPA
is less than their set values, the buzzer sounds and a text message appears.
This alarm helps you keep your vessel away from collision by warning of targets on a
collision course. Make sure that the gain, sea and rain controls are correctly adjusted
before you use this alarm.
CPA/TCPA alarm ranges must be set correctly according to the size, tonnage, speed,
turning performance and other characteristics of your vessel.
ID 1
COG/SOG 56.2
°
T/6.8 kt
CPA/TCPA 3 nm/55m03s
Range/Bearing 6.366 nm/26.7
°
T
ID 1
COG 56.2
°
T
SOG 6.8 kt
CPA 3 nm
TCPA 55m03s
Range 6.366nm
Bearing 26.7
°
T
Position 34
°
37.1715'N; 135
°
10.2459
ARPA simple target data
ARPA detailed target data
Clear lost
Clear all Lost Targets
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