Title :
Unspecified LISN parameters can cause emissions to appear greater than 10 dB high
Author_Institution :
Hewlett-Packard Co., Roseville, CA, USA
Abstract :
Experimental findings of the testing of two different products using FCC/VDE LISNs from several manufacturers are summarized. The initial problem, inconsistent measurement of emissions, was noted on one UUT; while measurement of emissions on another UUT were consistent. Modifying the grounding of LISN VA #2 allowed more reproducible measurements compared to LISNs VC or VD which meet the impedance specifications and had a low internal ground impedance
Keywords :
electromagnetic interference; electronic equipment testing; measurement standards; EMI; FCC; LISN parameters; UUT; VDE; emissions measurement; grounding; impedance specifications; internal ground impedance; FCC; Grounding; Impedance measurement; Pulp manufacturing; Radiofrequency interference; Reproducibility of results; Resonant frequency; Testing; Virtual colonoscopy;
Conference_Titel :
Electromagnetic Compatibility, 1991. Symposium Record., IEEE 1991 International Symposium on
Conference_Location :
Cherry Hill, NJ
Print_ISBN :
0-7803-0158-7
DOI :
10.1109/ISEMC.1991.148279
