Learn the engineering principles behind damped oscillatory magnetic field immunity testing and develop a practical understanding of the key factors that influence test setup, field generation, equipment placement, and measurement validation. This course explains the physical phenomenon associated with HV switching operations, transient voltage waves, impedance mismatches, oscillatory currents, frequency, damping, and repetition rate. You will also learn how different electrical environments are classified according to their potential exposure to damped oscillatory magnetic fields. The course then moves into the practical aspects of the test apparatus. You will examine the 1 m × 2.6 m induction-coil configuration, X-Y and X-Z plane constraints, +3 dB and −3 dB isolines, field-uniformity considerations, and the maximum Equipment Under Test (EUT) dimensions presented in the training material.
A major part of the course focuses on measurement validation and uncertainty analysis. You will learn how to identify uncertainty sources, establish a measurement model, estimate standard uncertainties, and understand combined and expanded uncertainty. The course also explains the peak-current calculation and the influence of parameters such as peak voltage, transfer resistance, setup repeatability, oscilloscope accuracy, waveform shape coefficient, and measurement bandwidth.
You will further explore how limited system bandwidth can distort transient peaks, and how oscillation frequency, damping, waveform shape, and bandwidth affect measurement accuracy. By the end of the course, you will have a structured understanding of three important engineering areas: environmental mapping, spatial compliance, and metrological rigor. This will help you better understand how immunity-test conditions are established and how measurement results can be evaluated in a technically structured manner.
