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Bundled Cable Parameters And Their Impact On Emi Measurement Repeatability, Todd H. Hubing
Bundled Cable Parameters And Their Impact On Emi Measurement Repeatability, Todd H. Hubing
Electrical and Computer Engineering Faculty Research & Creative Works
EMI (electromagnetic interference) test procedures specify that long cables should be bundled at their center in some circumstances. The author investigates the effect of cable bundling using analytical models and measurements. He examines how cable bundle parameters such as length and "tightness'' can affect the repeatability of the measurement. Simple models of a bundled cable suggest that relatively small changes in the geometry of the bundle can significantly affect the common-mode cable current. Parameters such as length, tightness, location and the number of turns determine the impedance of the bundle. As the impedance of the cable bundle changes, the resonant …