--------
In message <60c74d75-41e5-7112-d8b6-721664b89...@rubidium.dyndns.org>, Magnus 
Danielson writes:

>Indeed. On the other hand some measurements is hard not to do that way.
>One should think about how isolation is created if needed, and this 
>includes AC and DC, common mode and differential mode. Isolation 
>amplifier should be part of the arsenal.

EMI is part of it, but there raw synchronism is a significant
source of systematic errors because the "noise" is no longer
gaussian.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
p...@freebsd.org         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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