Simrad AC12

[lateral]

Inputs- PGN 127250;130577

My GH2183 outputs 127250 and all the 129XXX but not 130577.
Is this a problem? If so do I need a plotter/laptop or Nav instrument?
I have tritons & a Pilot. And a NGT-1 N2K---> to usb
Can't find it in the AC12 manual.

Thinking about installing this stuff before it takes root in my office.

[lateral]

Searched hi & low on the net.
That PGN has got to be created somewhere.
I have a feeling that it is created in the AC12 , from Nav PNG's, used for the AP, and then put on the network. If so, whoever wrote the manual is not very accurate.