Thank you for the information, Matt !

My spare card here has one of those neat caps that says 'gap-cap 1-2kV'
and has a cut in the top to form a spark gap ;-)

10BaseT BNC is very definitely 2Vpp into 25 ohms or less (cable terminated
at both ends with 50R) (I measured serveal cards).

I don't think that the magnetics on a standard ethernet card are good
enough for hospital grade insulation but I make an educated guess about
such a thing existing already.

Peter

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