Polygonal Activation Zones - Sperry Marine Visionmaster FT ECDIS User Manual

Targets

Polygonal Activation Zones

A polygonal zone is a randomly shaped zone constructed from operator
defined zone points (maximum of 10), which are entered directly on to the
chart display.
Polygonal lines may be drawn up to a maximum distance of 40 NM from
own ship.
To create or edit a polygonal zone, do the following:
To create a polygonal zone:
1. Click on the New button of Zone 1 or Zone 2 and move the cursor
to the desired location in the chart display. The cursor is shown
with the letters `Add' below the cross hair and the `New' button
changes to Cancel, the Active and Edit buttons are disabled.
2. Left click in the display, the first zone point is created and is shown
on the screen as a small purple circle.
3. Move cursor and left click again, a second
zone point is created and the two circles are
joined with a straight purple line. To create
the polygonal shape continue the process,
the last zone point (maximum of 10) must be
entered at the first point. When the last zone
point has been entered the polygonal shape
is created. The zone point circles are removed, the zone line
changes to green and the zone is auto activated.
To edit a polygonal zone:
1. Click the Edit Off button of the polygonal zone to be edited, the
button changes to Submit. In edit mode all activation zones are
displayed on the screen, with the zone to be edited shown in purple
(edit mode) with all zone points displayed.
2. Move the cursor to the first point, the
cursor changes to a bidirectional arrow
indicator. Left click on the point, hold
down the left button and use the trackball
to drag the point to the required location
on the screen. Repeat the process for all
other zone points. Note that targets in an edited zone are not
activated.
3. When the zone is changed to the required shape and position click
the Submit button. The zone is activated (shown with a green line)
and the Edit is switched off.
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ECDIS User Guide
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