Apparently simple low-frequency measurements: an EMC view

Abstract

This paper demonstrates the need for care with some EMI problems present in even simple low-frequency (<1 MHz) measurements. Two experiments on cable crosstalk, found in the IEEE EMC Educational Manual, are used. Predictions are made from field theory, and compared to results from a series of measurement setups. Although the setups appear similar, it is found that unwanted coupling between the experiment and the measurement equipment influences the results.