B&G Zeus2 Glass Helm CPU - Manual (Page 67)

A circle can be added around your vessel to present the danger zone. The radius of the ring is
the same as the closest point of approach as set in the Dangerous Vessels dialog. See "Defining
dangerous vessels" on page 87. An alarm will trigger if a vessel is tracking into your safe zone.
Installation
The Installation option is used for radar installation, described in the separate Zeus
2 Glass
Helm Installation manual.
Radar | Zeus 2 Glass Helm 67