RE: [TowerTalk] noise flow analysis?

[Jim Lux <jimlux@earthlink.net>]

At 05:22 PM 1/9/2004 +0000, David Robbins K1TTT wrote:
> Amazing what you can find on google:
>
> "Noise flow" references:
> http://www.eedesign.com/story/OEG19991109S0038


That one is about analyzing noise and timing jitter in VLSI designs. Not 
applicable to BPL type analyses

> http://www.sm.go.dlr.de/sm-sk_info/library/documents/EGSciVis95/oil-7.ht
> ml

That one is about comparing the "spot noise" technique to using  oil films 
for airflow visualization in a wind tunnel. I have no idea what the spot 
noise technique is, although I am familiar with the oil film approach.  Not 
even vaguely connected to BPL


> http://www.wtec.org/loyola/subseafe/c2_poi.htm

Oceanography?  Acoustics again.  By the way, analyzing the nonuniformities 
in the noise field is a good way to detect things trying to hide, without 
using active sonar.

> http://signalintegrity.com/Pubs%5Cnews%5C1_6.htm

About bypass capacitors, and filtering noise on PCBs... No BPL relevance 
there (except perhaps for making sure the customer premises equipment meets 
Part 15?)


> http://www.ece.rochester.edu/~friedman/presentations/msicdvgs_pdf/msicdp
> art1.pdf

"Substrate Coupling and INterconnect Noise in Mixed-signal and High Speed 
Digital ICs"
Seems more like the first reference..


> noise-flow diagrams:
> http://www.engr.udayton.edu/ENtech/comp/courses/ECT454.htm


This one is about acoustic noise...and identifying paths for acoustic noise 
flow.  Probably not totally applicable to RF noise which has a different 
propagation method.

> >Somebody help me out here.  I've worked with obscure technologies
> > >for 30 years or so...what's 'noise flow'?
> > >


So, nothing even remotely relevant to doing a "noise flow" analysis for BPL.

Here's my guess:

He meant to say: "Noise Floor", which would make sense. 

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