[GPSNavX]

Closing and re-opening the GPS panel should allow MacENC to send the Actisense initialization to the NGT-1. This assumes "Disconnect When Closed" is checked in the MacENC Preferences "GPS" section. I didn't think the N2K backbone needed to be powered up to initialize the NGT-1. At least not my experience.

Now if the Actisense NGT-1 is not plugged into the Mac at the time MacENC is started, then the virtual serial port will not be available and of course MacENC has no way to know about it.