Sampling and Averaging Techniques in the Analysis of Fast Random Signals
- 1 April 1970
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 41 (4), 503-514
- https://doi.org/10.1063/1.1684563
Abstract
Problems arising when averaging fast signals random in shape and occurrence time are systematically examined. A setup is described, comprising a sampling oscilloscope and a memory unit, allowing high speed random operation. The system logic, which insures one‐to‐one delay‐channel correspondence under the most stringent conditions, allows averaging signals satisfying various specified conditions and optimizes the statistical accuracy of the results. An add‐subtract method allows elimination of synchronous transient noise, either external or arising from the sampling unit itself. Signals of 30 μV were averaged out in this way with a 0.1 nsec instrumental risetime. Applications are shown to a broad range of problems which include fast signal enhancement, optical signal measurements, photomultiplier single electron response studies, illumination function measurements for fast organic and slow scintillators, and semiconductordetector risetime observation. Two‐dimensional representation of random signal properties is also shown. It allows, for example, time jitter determinations with some tens of picosecond precision. The setup allows direct measurement of noise correlation and cross correlation functions.Keywords
This publication has 20 references indexed in Scilit:
- Simulation des signaux de scintillateurs par diodes emettrices de lumiere pour l'essai et le controle d'ensembles de detectionNuclear Instruments and Methods, 1969
- Shortening of detector signals with passive filters for pile-up reductionNuclear Instruments and Methods, 1969
- Simple technique for measuring pulse shapes from nuclear detectorsNuclear Instruments and Methods, 1968
- The analysis of random amplitude nanosecond pulsesNuclear Instruments and Methods, 1968
- The shape of pulses generated by alpha-particles in silicon drifted detectorsNuclear Instruments and Methods, 1968
- A risetime spectrometer for studying pulse shapes in Ge(Li) gamma-ray detectorsNuclear Instruments and Methods, 1968
- Statistical behaviour of the scintillation counter: Experimental resultsNuclear Instruments and Methods, 1967
- Pulse shape distributions from gamma-rays in lithium drifted germanium detectorsNuclear Instruments and Methods, 1967
- Fast Pulse Signal AveragingReview of Scientific Instruments, 1966
- Etude theorique de l'extraction d'un signal periodique dans un bruit par accumulation de donneesNuclear Instruments and Methods, 1965