Furuno FR-7062, FR-7252, FR-7112 manual Setting a guard zone, Preparation, To set a guard zone

	Dashed line:
	no alarm
	Guard
IN ALARM	zone
	OUT ALARM

Figure 3-8 In and Out alarm

Setting a guard zone

Preparation

1.Press the [MENU] key, and then select “OTHER MENU,” and press the [ACQ/EN- TER] key.

2.Select “15. Guard Mode” and “In” (alarm on target entering zone) or “Out” (alarm on target exiting zone) by operating the trackball.

3.Press the [ACQ/ENTER] key.

4.Press the [MENU] key to close the menu.

To set a guard zone

1.Mentally create the guard zone you want to set. For example, the guard zone shown in Figure 3-9 (1).

2.Operate the trackball to set the cursor on point A or B. Press the [GUARD ALARM] key. “*G (IN)” or “*G (OUT)”, with aster- isk blinking, appears at the top right-hand corner of the display. See Figure 3-9 (2). (The asterisk indicates the guard zone is partially set.)

3.Operate the trackball to set the cursor on point C or D. See Figure 3-9 (3).

4.Press the [GUARD ALARM] key. The as- terisk disappears. See Figure 3-9 (4).

		Asterisk blinking
	Guard zone		* G (IN)
	to set	A
A
		D
B		C

Drag cursor here.

(1) Mentally create			(2) Drag cursor to
the guard zone to set.			top left corner of
			zone and press
			[GUARD ALARM].
	G (IN)			G (IN)
		Guard
		zone			C
			Drag cursor
			here.
(4) Guard zone			(3) Drag cursor to
completed.			bottom right corner
			of zone and press
			[GUARD ALARM].

Figure 3-9 How to set the guard zone

Silencing the audible alarm

Any radar targets violating the guard zone will trigger the audible alarm. You can silence the audible alarm by pressing the [GUARD ALARM] key. When this is done, “G(ACKN)” replaces “G(IN).” This means the alarm is ac- knowledged. Press the key again to reactivate the alarm.

Cancelling the guard zone and alarm

Press and hold down the [GUARD ALARM] key until the guard zone disappears.

3-5