Furuno 1942, 1932, 1832 manual Watchman, Guard

		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].
	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].

Figure 3-8 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] key. When this is done, “G(ACKN)” replaces “G(IN).” This means the alarm is acknowledgrd. Press the key again to reacti- vate the alarm.

Cancelling the guard zone and guard alarm

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

Notes on the guard alarm

¡The alarm is a useful anti-collision aid, but does not relieve the operator of the respon- sibility to also keep a visual lookout for possible collision situations.

¡When the radar range is less than one half of the guard zone range, the guard zone dis- appears and “G (IN)” or “G (OUT)” ap- pears in inverse video. If this happens, raise to re-display the guard zone.

¡A target echo does not always mean a land- mass, reef, ships or surface objects but can imply returns from sea surface or precipi- tation. As the level of these returns varies with environment, the operator should properly adjust the A/C SEA, A/C RAIN and GAIN to be sure the alarm system does not overlook target echoes.

3.8 Watchman

The watchman function periodically transmits the radar for minute to check for targets in a guard zone. If it finds change in the zone from the previous transmission it sounds the radar continuously. This feature is useful when you do not need the radar’s function continuously but want to be alerted to radar targets in a spe- cific area.

Tx St-by Tx St-by

1 min 5, 10 or 1 min	5, 10 or
20 min	20 min

Watchman starts.

Figure 3-9 How watchman works

How watchman works

When the time selected for the watchman rest period has elapsed, the radar automatically transmits for one minute to check the condi- tion inside the guard zone. If there is no change, the radar goes into stand-by (“WATCHMAN” appears during stand-by.) If there is change, the radar sounds the audible alarm, cancels the watchman function and transmits continuously.

Turning on watchman

1.Create a guard zone (usually 360 degrees) with the guard alarm function.

2.Press the [MENU] key.

3.Select “OTHER MENU”.

4.Press the [ACQ/ENTER] key.

5.Select “15. Watchman”.

6.Press the omnipad to select watchman rest period; 5 minutes, 10 minutes or 20 min- utes.

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