Course Goals: To present and explain the essential concepts of EMI (electromagnetic interference) phenomena and control. To explain the strengths and shortcomings of EMI control methods and components. To present a number of computational tools. To demonstrate in the classroom a number of troubleshooting and measurement techniques and test equipment. To present dozens of practical lessons learned from three decades of EMI test and fix experience. To provide a workshop forum, wherein students will directly apply learned concepts, analysis methods, and fix tools to actual problems from their home organization. Day One – Introduction and History. Conducted Emissions Sources, Testing, and Practical Fixes Introduction, with EMI examples and demonstrations History, with significant EMI incidents and results Conducted emissions, including examples, units of measurement, common methods of measurement, test variables, powerline source impedance representation, current probes, transfer impedance, common mode and differential mode. Time domain versus frequency domain Fix methods with limitations, CM/DM (common mode/differential mode) filter design methodology, parasitic reactances and component limitations, isolation transformers, opto-isolators, and fiber optics. Day Two – Radiated Emissions Sources, Testing, and Practical Fixes Radiated emissions, including theory, isotropic radiators, H (magnetic) fields, E (electric) fields, plane waves, wave impedance, antenna gain, antenna factors, near field, far field, common testing methods. Shielding theory, shield design, aperture leakage, shielding hardware with limitations. Cable shielding, shield transfer impedance, cable bundling, crosstalk, and twisting. Differential mode and common mode radiation. Day Three – Susceptibility Testing and Practical Fixes. Achieving EMC (Electromagnetic Compatibility) and Practical Lessons Learned. Conducted susceptibility (AF [audio frequency], RF [radio frequency], and spike/impulse), transformer coupling, capacitive injection, bulk cable injection, fix methods. Radiated susceptibility, including H field, E field, plane wave, fix methods EMP (electromagnetic pulse) testing and fixes ESD (electrostatic discharge) testing and fixes Lightning testing and fixes EMC Goals Problem analysis, plans, tools, methods How to organize, analyze, and solve EMI problems Fix summary chart – how to select appropriate EMI fixes Troubleshooting tools, including current probes, voltage probes, LCR (inductance-capacitance-resistance) meters, RF sniffers and near field probes, RADHAZ (radiation hazard) probes, antennas. Troubleshooting techniques. How to prevent EMI problems Practical field experience and lessons learned Day Four – Student EMI Workshop Problem descriptions from students Problem culling and student assignments to similar interest workgroups Group work to organize, analyze, plan, and solve selected EMI problems Problem/solution presentations by student workgroups, with critiques by class and instructor Course summary Recommendations References for further study Award of course completion certificates Scheduling For student work schedule accommodation, the four day seminar in some instances may be presented in two-day increments. That is, Days One and Two may be scheduled for two consecutive days in the first week, and Days Three and Four may be scheduled for two consecutive days the following week. We will endeavor to comply with all reasonable schedule requests, including evening and weekend classes. William H. Parker, PE, NCE PARKER EMC ENGINEERING 15246 Daphne Avenue Gardena, CA 90249-4122 Phone/FAX: (310) 323-4188 E-mail: PARKEREMC@worldnet.att.net