An Amplitude Probability Distribution (APD) measuring receiver that conforms to CISPR16-1-1 2nd edition has been developed. The receiver is installed in a general-purpose spectrum analyzer that has a field programmable gate array (FPGA) for digital signal processing. This paper reports the evaluation test results for measuring continuity, the results of an examination of the accuracy on the peak measurement of pulses that occur infrequently, and the results of an APD measurement experiment on rarely occurring pulses mainly caused by electrostatic discharge.
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