[TowerTalk] noise flow analysis?
Jim Lux
jimlux at earthlink.net
Fri Jan 9 11:35:04 EST 2004
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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