Raymarine axiom pro 9 RVX Installation Instructions Manual page 291

A Guard zone can be configured as a sector or as a circle around your vessel.
Selecting Adjust Zone allows you to configure the size of the Guard Zone.
Adjust the guard zone size by dragging the inner and outer perimeter end points (circles) to the
desired locations.
Once configure select Back.
If required, you can also adjust the Guard zone sensitivity. Sensitivity determines the size at which
object are identified as targets, a lower setting will identify less targets.
Radar application
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