28 Oct
2012
28 Oct
'12
6:52 p.m.
On Sun, 28 Oct 2012, Wayne Stallwood wrote:
What it does when you have differential signalling is ensure that both sides of the pair are subjected to the same electromagnetic interference at the same amplitude. Thus making it easy for a comparator to subtract the noise out.
That's the situation I meant by "magnetic pickup". Yes, the other noise sources you identify are probably bigger in Chris' application.