Title :
Measurement of conducted emissions. Possible sources for measurement uncertainties
Author :
Krattenmacher, H. ; Schwab, A.
Author_Institution :
Inst. of Electr. Energy Syst., Karlsruhe Univ., Germany
Abstract :
This paper presents results of investigations of the test setup for conducted emission measurements in the frequency rang from 150 kHz to 30 MHz according to CISPR 14:1993 and EN 55014:1993, respectively. It is addressed to EMC test engineers to give them an idea how slight variations in the test setup can affect the measurement results and increase the measurement uncertainty. The investigations were performed by using a real EUT, namely a gas heating device with a repetitive ignition unit which produces broadband disturbances. Furthermore a comparison of a type A and type B evaluation of the measurement uncertainty is presented. The obtained results confirm that the human factor as well as some degrees of freedom in the standards are sources of measurement uncertainty
Keywords :
electromagnetic compatibility; measurement uncertainty; radiofrequency interference; standards; test equipment; 150 to 30 kHz; CISPR 14:1993; EMC; EN 55014:1993; EUT; broadband disturbances; conducted emissions; emission measurements; gas heating device; human factor; measurement uncertainties; repetitive ignition unit; test setup; type A evaluation; type B evaluation; Electric variables measurement; Electromagnetic compatibility; Energy measurement; Frequency measurement; Heating; Human factors; Length measurement; Measurement uncertainty; Power measurement; Testing;
Conference_Titel :
Electromagnetic Compatibility, 1999 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5057-X
DOI :
10.1109/ISEMC.1999.812930
