Comparison of site-to-site measurement reproducibility using UKNational Physical Laboratory and Austrian Research Center test sites asa reference

摘要

Twenty Radiated emission sites are compared using a sinusoidalreference transmitter in the frequency range of 30 to 1000 MHz. The datais referenced to results measured on the UK National Physical Laboratoryand Austrian Research Centers reference sites. The data on nineteen siteis reported in this article, the data on the one remaining was done atthree meters and not comparable. Of the nineteen sites, nine performedfrom four to six measurements on different days and usually withdifferent people. Statistically, the results of these nine sites show95% of the measurements made were within +/-2.1 dB from the average ofthe reference sites. Test result differences in repeated EMC tests arepartially caused by physical characteristics of the measurement sitesand changes or differences in the measurement chain. This program hasmet the requirements of A2LA and NVLAP for site-to-site comparisons.Being programmable the source could be easily adaptable to“blind” proficiency assessments