Northrop Grumman Sperry Marine VisionMaster FT, User Manual

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Targets Radar/Chart Radar User Guide
10-52 65900010
Limits and Settings
The Limits and Settings window defines the
following:

CPA/TCPA limits

Bow crossing ( BCR/BCT ) limits

Target Association settings and limits

Lost Target Alert enablement and lost
target range limit setting
A target is considered dangerous if it infringes the
defined limits set in this window. When this
happens an alert is raised, the alert is cleared
automatically when there are no targets infringing
the defined limits.
To change the infringement limits do the
following.
1. Click inside the field to be changed. The
value changes from white to green
(editable).
2. Move the trackball left (to decrease the limit) or right (to
increase). When the limit has been correctly defined left click to
enter value and exit edit mode.
Closest Point of Approach & Bow Crossing Limits
The system default values and the minimum/maximum infringement limits
for CPA/TCPA and BCR/BCT are shown in the table below.
Parameter CPA/BCR TCPA/BCT
System default value 0.2 NM 10 minutes
Range of values 0.1 to 20.0 NM 1 to 99 minutes