Wide band modulation of conducted susceptibility signals

The concept of wide band modulation of a bulk cable injected, conducted susceptibility signal is explored in this paper as a complement to frequency stirring below the frequencies where uniform radiated fields can not be produced. The method is especially useful for long cycle time test articles. The study suggests a suitable modulation and scan rate as an initial look. The technique was then used to identify susceptibilities in a long cycle time test article and its effectiveness was compared to existing technology. The results strongly indicate that this is an excellent screening tool to identify potential susceptibility areas rapidly and then use conventional methodology to better characterize the responses. The results indicate that the methodology could be used to replace conventional methods in completely characterizing the test article; however, the results where not thoroughly conclusive. Further investigation and refinement of the methodology will be necessary