Page 140
958 Operator’s Manual, Rev. A
Chapter 10 - Understanding Radar Functions
Radar markers
page 2
You can designate up to three areas that will cause an alarm if
a radar echo is detected within the area. Each zone is bounded
by an inner and an outer arc centered on the vessel, and by
two straight lines extending outward from the vessel.
You can turn each zone on or off, change its size and location,
and set the echo strength that will cause an alarm.
Figure 7: Guard zone
The guard zone is displayed with red lines. Radar echoes
within a guard zone are displayed in red.
Press the following keys to adjust each guard zone.
Press the
GUARD ZONE
key repeatedly to select zone 1, 2, or
3. You can adjust only one zone at a time.
Press the
VISIBILITY
key repeatedly to show or hide the zone.
When a zone is hidden, it doesn’t display and doesn’t alarm;
furthermore, you can’t use the
EDIT
or
TRIGGER LEVEL
keys
for that zone. You select the visibility of each zone separately.
You can change the location and size of each guard zone by
moving Point A and Point B using the
CURSOR PAD
. Press the
EDIT
key repeatedly to select the point you want to move.
Then press the
CURSOR PAD
to move the point and create an
arc-shaped zone.
Summary of Contents for 958
Page 1: ...NORTHSTAR 958 Integrated Navigation System Operator s Manual P N GM958UM Revision A ...
Page 2: ......
Page 8: ...Page iv 958 Operator s Manual Rev A ...
Page 26: ...Page 18 958 Operator s Manual Rev A Chapter 1 Getting Started ...
Page 128: ...Page 120 958 Operator s Manual Rev A Chapter 8 Understanding Waypoint Route Navigation ...
Page 150: ...Page 142 958 Operator s Manual Rev A Chapter 10 Understanding Radar Functions ...
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