Hello, For uncertainty take a look at "Results of the CISPR/A Radiated Emission Round Robin Test", P.A. Beeckman and J.J. Goedbloed IEEE 2001.
Summary of 15 sites - controlled EUT < 4 dB vartiation, Un-controlled EUT up to 9 dB variation. Regards, Ken Hall -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Monday, July 08, 2002 5:11 AM To: [email protected] Subject: RE: Measurement Consistency of OATS We have noticed a change in our OATS characteristics depending upon the dampness of the area. It is especially noticeable this time of year when we get a lot of rain in Florida. Does anyone else experience this phenomena? More to your question Mat, the major contributors to the measurement uncertainty would be the repeatability of the setup of the EUT and test equipment (e.g., distance from EUT to antenna) and the stability/drift of the EUT and test equipment. Half of these parameters are human based (setup) and should vary less if the same person performs all of the tests. I have not seen a paper on this subject. Unually these variations are lighly covered in texts on measurement uncertainty. Richard Woods Sensormatic Electronics Tyco International -----Original Message----- From: Aschenberg, Mat [mailto:[email protected]] Sent: Friday, July 05, 2002 10:49 AM To: [email protected] Subject: Measurement Consistency of OATS Hello, Have any of you seen a paper written on the measurement consistency of an OATS? If I were to have a product repeatedly measured at an OATS, how close should I expect the measurements to be? For sake of this example, there are no cables. All measurements are performed at the same OATS. The EUT is assumed not to change between tests. Mat ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list" ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
