Re: [PSES] Measurement dilema

2018-01-27 Thread Brian O'Connell 
Pareto principle/distribution? Methinks it may be that way with all life 
sciences. After having read over 200 PhD and master's papers in 
agriculture/agronomy/botany, have come to the conclusion that their ilk's 
intellectual toolbox are simply not equipped with adequate mathematical tools, 
nor educational rigor. Agree that there is too much fiscal and political 
motivation in medical research, but to make a corollary, do not ascribe to mal 
intent what is incompetence. Or human 'entropy'.

As for the different signals, would have to know more about the analog front 
end to the scope and whether multiple channels share ADCs (have not read that 
model's manual). Had somewhat similar affects in my box where the mux and ADC 
were triggered by external events, not the microcontroller. Would need to see a 
frequency-domain of both channels to know if this is an artifact of 
'differential' sampling. Perhaps companding would do that, dunno. But probably 
just interference from space aliens.

Brian


From: John Woodgate [mailto:j...@woodjohn.uk] 
Sent: Saturday, January 27, 2018 11:44 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Measurement dilema

It's probably another case of the 80/20 rule. Even with peer-reviewed papers, 
the long-term opinion may be that 20% at most were of value.
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2018-01-27 19:27, Douglas Smith wrote:
Great quote! It pretty much describes much of medical research in my opinion. 
The great thing about engineering is the field is “grounded” (pun intended) in 
fundamentals. No so much in medicine where money and politics matter as much as 
science. My hobby when I am not doing engineering is medicine and I read tons 
of medical studies. Many are either junk (poorly done) or fraud! Some are great.
Doug Smith
Sent from my iPhone
IPhone:  408-858-4528
Office:    702-570-6108
Email:     d...@dsmith.org
Website: http://dsmith.org

On Fri, Jan 26, 2018 at 17:34, Richard Nute  wrote:
 
Hi Doug:
 
While I don’t yet have the answer (and may never have the answer), I ran across 
this quote from Luigi Galvani which I think applies here:
 
“For it is easy in experimentation to be deceived, and to think one has seen 
and discovered what we desire to see and discover.”
 
Best regards,
Rich
 
 
From: Doug Smith [mailto:d...@emcesd.com] 
Sent: Friday, January 26, 2018 2:50 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Measurement dilema
 
Hi All,

Can you explain the result in this video I just made? Scope plots of the same 
two nodes are completely different. Probes and scope are operating normally, no 
problem with the equipment itself.

If you have been to my seminars you know the answer, please do not post the 
answer unless you have not seen this experiment until now.

Hint 1: There are no EM fields radiating from the shielded box affecting the 
probes.
Hint 2: There are no active components inside the box.

https://youtu.be/qj-HBFMEJiY

Doug 

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Re: [PSES] Measurement dilema

2018-01-27 Thread John Woodgate 
It's probably another case of the 80/20 rule. Even with peer-reviewed 
papers, the long-term opinion may be that 20% at most were of value.


John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-01-27 19:27, Douglas Smith wrote:
Great quote! It pretty much describes much of medical research in my 
opinion. The great thing about engineering is the field is “grounded” 
(pun intended) in fundamentals. No so much in medicine where money and 
politics matter as much as science. My hobby when I am not doing 
engineering is medicine and I read tons of medical studies. Many are 
either junk (poorly done) or fraud! Some are great.


Doug Smith
Sent from my iPhone
IPhone:  408-858-4528
Office:    702-570-6108
Email:     d...@dsmith.org
Website: http://dsmith.org

On Fri, Jan 26, 2018 at 17:34, Richard Nute  wrote:

Hi Doug:

While I don’t yet have the answer (and may never have the answer),
I ran across this quote from Luigi Galvani which I think applies here:

“For it is easy in experimentation to be deceived, and to think
one has seen and discovered what we desire to see and discover.”

Best regards,

Rich

*From:* Doug Smith [mailto:d...@emcesd.com]
*Sent:* Friday, January 26, 2018 2:50 PM
*To:* EMC-PSTC@LISTSERV.IEEE.ORG
*Subject:* [PSES] Measurement dilema

Hi All,

Can you explain the result in this video I just made? Scope plots
of the same two nodes are completely different. Probes and scope
are operating normally, no problem with the equipment itself.

If you have been to my seminars you know the answer, please do not
post the answer unless you have not seen this experiment until now.

Hint 1: There are no EM fields radiating from the shielded box
affecting the probes.
Hint 2: There are no active components inside the box.

https://youtu.be/qj-HBFMEJiY

Doug

-


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Re: [PSES] Measurement dilema

2018-01-27 Thread Douglas Smith 
Great quote! It pretty much describes much of medical research in my opinion. 
The great thing about engineering is the field is “grounded” (pun intended) in 
fundamentals. No so much in medicine where money and politics matter as much as 
science. My hobby when I am not doing engineering is medicine and I read tons 
of medical studies. Many are either junk (poorly done) or fraud! Some are great.

Doug Smith Sent from my iPhone IPhone: 408-858-4528 Office: 702-570-6108 Email: 
d...@dsmith.org Website: http://dsmith.org
On Fri, Jan 26, 2018 at 17:34, Richard Nute  wrote:


Hi Doug:



While I don’t yet have the answer (and may never have the answer), I ran across 
this quote from Luigi Galvani which I think applies here:



“For it is easy in experimentation to be deceived, and to think one has seen 
and discovered what we desire to see and discover.”



Best regards,

Rich





From: Doug Smith [mailto:d...@emcesd.com]
Sent: Friday, January 26, 2018 2:50 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Measurement dilema



Hi All,

Can you explain the result in this video I just made? Scope plots of the same 
two nodes are completely different. Probes and scope are operating normally, no 
problem with the equipment itself.

If you have been to my seminars you know the answer, please do not post the 
answer unless you have not seen this experiment until now.

Hint 1: There are no EM fields radiating from the shielded box affecting the 
probes.
Hint 2: There are no active components inside the box.

https://youtu.be/qj-HBFMEJiY [https://youtu.be/qj-HBFMEJiY]

Doug



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