Furuno NAVNET 1752C - Manual (Page 66)

2. RADAR OPERATION
2-32
2.23 Watchman
2.23.1 How watchman works
The watchman function periodically transmits radar pulses for one minute to
check for targets in a guard zone. If a target is found in the zone, watchman is
cancelled, the audio alarm sounds and the radar continues transmitting. If no
target is found the radar goes into standby, for the number of minutes selected
on the RADAR DISPLAY SETUP menu. This feature is useful when you do not
need the radar’s function continuously but want to be alerted to radar targets in a
specific area. “WTCH” appears at the top left corner when Watchman is active.
ST-BY
5,10
or
20 min
Tx
1 min
Tx
1 min
Watchman
starts
5,10
or
20 min
ST-BY
* *
* Beeps emitted just before radar transmits.
How watchman works
2.23.2 Turning on/off watchman
1. If not displayed, press the [HIDE/SHOW] key to display the radar soft keys.
2. Press the NAV FUNC soft key.
3. Press the W. MAN ON/OFF soft key to select ON or OFF as appropriate.
4. Press RETURN soft key to finish.
Note: When the watchman is activated and no guard zone is active, the
message “PLEASE SET GUARD ZONE. PUSH ANY KEY TO
CONTINUE.” appears. Press any key and then set a guard zone.
2
.23.3 Setting watchman stand-by interval
The watchman standby period interval, that is, the number of minutes the radar
is in standby, can be set to 5, 10 or 20 minutes as follows:
1. Press the [MENU] key.
2. Press the RADAR DISPLAY SETUP soft key.
3. Select WATCHMAN TIME and press the EDIT soft key.
WATCHMAN TIME
¡
¡
¤ 5 minutes
10 minutes
20 minutes
Watchman window
4. Select time desired and press the ENTER soft key.
5. Press the [MENU] key to close the menu.