Luke et al
Are you trying to satisfy the relevant clauses of ISO 17025 "General
requirements for the competence of testing and calibration laboratories" ?
I have been following the guidance in UKAS document LAB 34
http://www.ukas.com/pdfs/Lab34.pdf for calculating uncertainties in EMC
measurements. This is based on the older NIS 81 document and references the
CISPR standard you refer to.
Am I correct in saying that as long as you do a valid assessment of
uncertainties, by following whatever standard, you can satisfy the relevant
requirements of ISO 17025?

On the issue of verification of ESD test equipment, referred to in other
postings, but relevant to ISO 17025 compliance, is it not sufficient to
merely observe that a spark is generated by a calibrated ESD gun when the
device is operational and brought close to a conductive surface? Do you
really need to observe the waveform? If this is not sufficient then
shouldn't the same rationale be applied to all other pieces of immunity test
equipment? 

Ian Gordon
> -----Original Message-----
> From: Luke Turnbull [mailto:[email protected]]
> Sent: 06 May 2003 15:02
> To: [email protected]
> Subject: CISPR 16-4.
> 
> 
> 
> Dear all,
> 
> Does anyone know if CISPR 16-4 (Uncertainty in EMC 
> measurements) is called up by any testing standard, or 
> whether it is to be called up in the future?  Otherwise, it 
> appears that this standard is an interesting read, but nothing more.
> 
> Thanks
> Dr Luke Turnbull
>
> 

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