Originally Posted by ChrisWiggles
And I've kept asking you to point out what exactly you disagree with, and you can't do that, you just keep saying I don't know what I'm talking about and I can't really discern what it is you have a problem with.
Clearly I am and have been disagreeing with your insistence twisted pairs can only reduce noise to balanced circuits.
Again from the UTP link.
Twisted pair cabling is a form of wiring in which two conductors (the forward and return conductors of a single circuit) are twisted together for the purposes of canceling out electromagnetic interference (EMI) from external sources;
Note that there is nothing whatsoever about balanced impedances or signal types. Very very clear IMO.
That's because your statements are confusing, unclear, and I don't really know what it is your disagreement is even about.
I was thinking the same thing about you especially when you basically repeat what I said for two paragraphs but in an argumentative tone as if we disagreed.
I did, but you are incoherent, so it's difficult to figure out what the heck you mean particularly when you are confusing so many things together.
Exactly what is it about my statement "I do, however, concede this point." that confuses you? The text seems simple to understand to me and rather straight forward.
No it doesn't. In an unbalanced circuit, one leg is ground. There is no common noise possible so there is no noise cancellation. How can it cancel out in an unbalanced circuit? The answer is that it can't, and that it doesn't, and that's why twisted pair doesn't do you a damn bit of good unless the circuit is balanced.
The amount of noise energy recieved by the cabling depends on the conductors geometry within the noise fields. The only effect the circuits impedance has is how this energy manifests itself as noise voltage at the transciever pins. The impedance cannot somehow magically deny the noise energy entrance to the circuit. It can only vary it's resulting voltage magnitude as seen at the transciever which may or may not allow this circuit to more effectively deal with it. Denying noise energy from entering the circuit in the first place via choice of good wire geometry benefits every circuit type.
It's really great and useful that balanced circuitry deals with certain types of noise more elegantly than unbalanced circuitry but that is completely beside the point.
I have no idea where you get that. I'm just attempting to explain the subject, briefly.
Could it be those examples such as where I pointed out above you spend 2 paragraphs agreeing in an argumentative way?
I don't understand what you mean by this question. Do you mean too much resistance to ground?
Grounds all have impedance which will have a voltage due to noise current travelling through it. No system has a perfect no impedance ground, not even really well designed circuits.
Again, what? What has impedance modulated by noise? This makes no sense at all.
I'm not suprised by the idea that you can't fathom ground impedance being modulated by noise current.
It follows logically that steps to reduce it are good.