TEM cell mode excitation as a function of DUT harness wire number

This paper describes a series of measurements that show TEM cell resonances as a function of the number of wires populating a DUT harness. Due to DUT interaction with the TEM cell over certain frequency ranges, an uncertainty had been introduced into the test data: was the DUT susceptible, or was the DUT interacting with the test fixture? This led to a question concerning whether the DUT harness was properly decoupled at the point of entry to the TEM cell. A series of measurements were made with varying lengths of wire and varying wire count in order to determine what factors led to field enhancement in the test region