Radar: Sensitivity of guard zone alarms
You can set the sensitivity of the radar guard zone alarm to define
the size of the target that will trigger the alarm.
100% is maximum sensitivity, meaning that very small targets will
trigger the guard zone alarm. 0% is minimum sensitivity, meaning
that only very large targets will trigger the alarm. 50% is the
default.
The same sensitivity setting is applied to
both
of the radar guard
zones if both are activated.
¾
To set the sensitivity of the guard zone alarm:
•
Display the
Radar
screen and main menu. If you can't see the
Guard Zones
button, select
Return
.
•
Select
Guard Zones
. The
Guard Zone Sensitivity
button shows the current sensitivity setting as a percentage.
•
Select
Guard Zone Sensitivity
if you want to change the
current setting and a slider box appears. The current setting is
shown as a solid line of color and as a percentage.
•
Drag the line to change the setting.
•
Select
OK
.
Radar: Radar bearing alignment
Use the radar bearing alignment to rotate
Radar
image, one
degree at a time, so that a known object dead ahead is directly
under the vessel's heading marker.
This means that the
Radar
image is aligned with the displayed
Chart
and the compass. An accurate bearing alignment is
particularly important when the radar image is overlain onto the
Chart
.
It's best to do this on a page showing a
Chart
with the radar
overlay On in one pane, and the
Radar
screen in the other pane.
¾
To change the radar bearing alignment:
•
Select
Pages
. If you:
◦
don't have a page that shows the
Radar
screen in one pane
and the
Chart
in the other pane, edit or create a page that
shows these two panes.
◦
do have a page that shows the
Radar
screen in one pane
and the
Chart
in the other, select that page.
128
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Radar
Summary of Contents for GB40
Page 81: ...Blank page 80 Chart...
Page 131: ...Blank page 130 Radar...
Page 156: ...GB40 Integrated Network System Manual EN Doc no MN000780D...
