Furuno MFD12 - Guard Alarm; How to Set a Guard Zone

6. Radar
6-15
6.12 Guard Alarm
The purpose of the guard alarm is to provide audio and visual warnings against targets
(vessels, islands, landmasses, etc.) when a radar target enters the area you select.
6.12.1 How to Set a Guard Zone
You can set a guard zone by two methods. Use the Radar pop-up menu or the soft
controls ([Guard Zone]→[Zone] 1(2)). The procedure shown below shows how to set
a zone with the pop-up menu.
1. Push the right-click button to show the Radar pop-up menu.
2. Use the RotoKey to select [Set Guard 1] or [Set Guard 2].
3. Use the CursorPad to put the cursor at point A for the guard zone then push the
left-click button.
4. Use the CursorPad to move the cursor to point B 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 posi-
tion A and position B.
Note 2: The location of points A and B control the shape of the guard zone. Below
are three examples.
Guard Zone
Drag cursor to Point B
Point A
Point B
153
153
X
X
A
B
X
X
A
B
X
X
A
B