Furuno MFD12 - Page 142

6. Radar
6-33
5. Use the CursorPad to move the cursor to the bottom right corner (Point B below)
for the guard zone then push the left-click button.
Note 1: To set a 360-degree guard zone, set the same bearing for both the position A
and position B.
Note 2: The location of points A and B control the shape of the guard zone. Below are
three examples.
How to use a guard zone as a ARPA acquisition zone
Open the [Targets] menu then activate [Guard Zone AUTO Acq].
How to erase the acquisition zone and return to full manual acquisition
Put the cursor on a line of the guard zone then push the right-click button. (The line
becomes thicker if correctly selected.) The Guard Zone pop-up appears. Use the
RotoKey to select [Clear Guard].
ARPA Acquistion
Zone
Drag cursor to Point B
Point A
Point B
153
153
X
X
A
B
X
X
A
B
X
X
A
B