20. Arpa Target Functions; Arpa Radar Targets; Dangerous Arpa Radar Targets; Lost Arpa Radar Targets - Furuno FEA-2107 Operator's Manual

20. ARPA Target Functions

20.1

ARPA Radar Targets

ARPA-tracked targets may also be displayed on the ECDIS display. To do this, do the following:
1. Spin the thumbwheel to display Chart Display/Info/Standard Display in the mouse functions area.
2. Push the left mouse button.
3. Place the cursor on an arrow tab and click it until the Targets page appears.
4. Click the Std or Oth radio button of ARPA Targets.
Note: AIS and ARPA targets viewing limitations are as below.
•
AIS and ARPA targets are displayed on top of chart 1:1,000,001 for S57 charts.
•
AIS and ARPA targets are displayed on top of chart 1:1,900,001 for ARCS charts. This allows display
of AIS and ARPA targets on top of the largest scale ocean charts (original scale 1:3,500,000) when
they are zoomed to overscale.
20.1.1

Dangerous ARPA radar targets

A dangerous ARPA target is displayed on the ECDIS as a blinking target symbol in green and red color alternately.
The ECDIS has its own definition for dangerous target limits, thus an ARPA radar may show a target as dangerous
while ECDIS shows it as safe and vice versa. You can set CPA and TCPA limits used by the ECDIS in the Danger
Targets page of Voyage Recording dialog box. For more information, see the paragraph "Setting conditions of
viewing and logging danger targets" on page 23-7.
20.1.2

Lost ARPA radar targets

A lost ARPA radar target is displayed on the ECDIS as a blinking target symbol in green and dark yellow
alternately.
20-1