Northrop Grumman Sperry Marine VisionMaster FT, User Manual

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Radar/Chart Radar User Guide Targets
65900010 10-43
Acquisition Zones
An acquisition zone is a defined annular or polygonal area of the display.
When the system is in Transmit mode, targets that enter the area are
automatically acquired and tracked. AIS targets are activated when
entering an acquisition zone in both Transmit and Standby mode.
There are two annular and two polygonal acquisition zones available,
which can be turned on and off. The annular zone parameters are edited
from the Acquisition Zones window, or on the display; the polygonal zone
parameters are created and edited only on the display. When an
acquisition zone is active the zone parameters are shown on the display as
a solid green line. When an acquisition zone is being edited its line colour
changes from green to light purple.
Any targets found in an auto acquisition zone are marked by a flashing
acquisition zone symbol (see Target Monitoring Symbols in Target
Monitoring, or AIS Target Alarm States in AIS Targets) and an AZ Entry
warning is raised. Targets that the system decides are not existing targets
are automatically acquired. The acquisition zone symbol is turned off when
the AZ entry warning is acknowledged, or the zone is turned off. The
acquisition zone symbol is temporarily turned off if the zone is being edited.
WARNING!
A TARGET IN AN ACQUISITION ZONE MOVING AT A SPEED > 150
KNOTS WILL NOT GENERATE TRACKS. FOR INFORMATION SEE
FOOTNOTE ON PAGE 10-29.