Watchman - Furuno FR-7062 Operator's Manual

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 pos-
sible collision situations.
¡ When the radar range is less than one half of
the guard zone range, the guard zone disap-
pears and "G (IN)" or "G (OUT)" appears
in inverse video. If this happens, raise range
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 precipita-
tion. 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 over-
look target echoes.

3.8 Watchman

The watchman function periodically transmits
the radar for one minute to check for targets in
a guard zone. If it finds change in the zone from
the previous transmission the audible alarm
sounds and the radar transmits 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 specific area.
St-by
Tx
1 min
5, 10 or
20 min
Watchman
starts.
Figure 3-10 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 condition
inside the guard zone. If there is no change, the
radar goes into stand-by ("WATCHMAN" ap-
pears during stand-by.) If there is change, the
radar sounds the audible alarm, cancels the
watchman function and transmits continuously.
3-6
Tx
St-by
1 min 5, 10 or
20 min
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 "13. Watchman".
6. Operate the trackball to select watchman rest
period; 5 minutes, 10 minutes or 20 minutes.
7. Press the [ACQ/ENTER] key.
8. Press the [MENU] key to close the menu.
"WATCHMAN" appears at the top of the
screen, the radar transmits for one minute to
check for targets inside the guard zone, and then
the CRT shuts off and the radar goes into stand-
by.
Cancelling watchman
Go into the "OTHER MENU" , and set "13.
Watchman" for off.
Note 1:Watchman can be used without a guard
zone.
Note 2:The alarm sounds just before the radar
starts and stops transmitting.