A method of wide-band amplitude distribution analysis is described which employs two commercial oscilloscopes and a phototube. The minimum set-up can be assembled quickly in the laboratory from standard equipment, and gives a rapid analysis accurate to better than 5 percent. It is free from the severe band-width restrictions of other methods (N. Knudtzon, Research Laboratory for Electronics, M. I. T. Tech. Rept. No. 115, July 15, 1949), and can often be employed up to 500 mc. Results on two noise sources are included for illustration, and a modification for improving the resolution and increasing the accuracy is presented.
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Lyman Walton Orr (1954) studied this question.