after completing the investigation, assemble the data and look for any patterns. the frequencies of the components measured by an analyzer will provide helpful clues. in addition, knowledge of operating frequencies for broadcast stations in the areas and for various end-use devices will help you determine which components result from operating which devices. even if you determine the source during an investigation, take some time to review the data to learn more about the EMI problem. this will lead you to possible solutions for resolving it