To assess a system's immunity to EFT, the International Electrotechnical Commission (IEC) developed the EFT test standard IEC61000-4-4 that defines test voltage waveform, range of test levels, test equipment, test set-up, and test procedure. In the EFT immunity test, a pulse generator creates sequences of low-energy pulses known as bursts. A single pulse has a rise time of 5 ns and a pulse duration (time-to-half value) of 50 ns. The burst period is 300 ms and includes 75 transients followed by a pause interval. Depending on the application requirement, these 75 pulses are applied at repetition frequencies of 5 kHz or 100 kHz. For a repetition rate of 5 kHz, the 75 pulses take 15 ms, while at 100 kHz they only take 750 µs (0.75 ms). The minimum test sequence takes two minutes and consists of three 10-second test intervals using positive pulses and three 10-second test intervals using negative pulses. Each test interval is followed by a 10-second pause. During the two-minute test, a total of 15,000 positive and 15,000 negative pulses are applied onto the equipment under test.