I read in !emc-pstc that Kurt Fischer <[email protected]>
wrote (in <046101c427b4$5cc075d0$6400a8c0@HYPERC1033>) about
'EN61000-3-2 repeatability test' on Wed, 21 Apr 2004:
>There seem to be large time lags on my responses propagating through the
>list server. It seems that you have two possible issues:
>
>1. If different runs of the test reveal failures to the limit line; then you
>should investigate why those failures happen. However, as John pointed out
>there are NO repeatability requirement for your switch-mode power supply
>(EUT) ---- some one is interpreting the standard incorrectly.
>
>2. If different runs of the test reveal different profiles that all comply
>with the limit line then you have passed and you are finished (even if these
>runs differ from each other by greater than 5%).
All that is true. However, there is an issue with products that have a
long, pre-determined operating cycle with fluctuating harmonic
emissions. I have asked for this to be discussed by the relevant experts
next week {by coincidence (serendipity?), they are meeting next week}.
Let us wait the outcome.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
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