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The effect of the placement of testing equipment on the measurement validity of radiated emission parameter

There are a number of factors that may affect the validity in measuring radiated emission test parameters in electromagnetic compatibility (EMC) testing. This research observes the effect of the placement of video pattern generator on the validity of measurement results of radiated emission parameter. The radiated emission measurement with the location of video pattern generator inside and outside of anechoic chamber was conducted. A ferrite absorber was also employed for the latter case to keep up with the noisy environment. The test method used refers to the CISPR 13:2009 standard. The measurement results showed that the difference of the highest peak value from two location was 4.175 dB. The use of ferrite absorber increased this difference to 22.558 dB.