Results 251 to 260 of about 1,948,990 (300)

Methods of High Precision Time-Interval Measurement

Proceedings of the 2020 4th International Conference on Electronic Information Technology and Computer Engineering, 2020
Technology of time-interval measurement has been applied in many fields. How to improve its precision is a pressing issue. On the bases of analyzing electronic counter's principle and error, this paper puts emphasis upon introducing high precision time-interval measurements all over the world.
Ren Xi, Zhang Xiao-fei
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Fast measurement of short time intervals

Journal of Physics E: Scientific Instruments, 1968
An instrument for the digital measurement of short time intervals, with a channel width variable between 2 and 5 ns, is described. It uses the technique, conventional for longer intervals, of counting clock pulses derived from a stable oscillator of known frequency, and has the additional advantages of a short dead time and a long term stability.
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Measurement of dead time by time interval distribution method

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015
Abstract Non-random event losses due to dead time effect in nuclear radiation detection systems distort the original Poisson process into a new type of distribution. As the characteristics of the distribution depend on physical properties of the detection system, it is possible to estimate the dead time parameters based on time interval analysis ...
Mohammad Arkani, Gholamreza Raisali
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A multi-channel time interval measurement for time comparison

2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum (FCS) Proceedings, 2011
This paper presents improvements on a multichannel time interval measurement for Time Comparison. The measurement has eight channels and measurements the time interval between nine clocks at the same tine. The measurement design is based on a commercially available GPX ASIC from acam-messelectronic gmbh provides a maximum of 86ps resolution per channel.
Shi Shao-hua, Li Xiao-hui, Zhang Hui-jun, Zhao Zhi-xiong   +3 more
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Bridge for Measuring Small Time Intervals

Bell System Technical Journal, 1928
A bridge circuit fur measuring time intervals from about one ten-thousandths of a second up to several seconds is described and its operation explained. The device is fairly accurate and easy to operate and gives the results of measurements in fractions of a second directly. Its calibration can readily be determined mathematically since it is dependent
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Oscillator Instability Effects in Time Interval Measurement

IEEE Transactions on Circuits and Systems I: Regular Papers, 2013
State-of-the-art TDCs can have a precision close to one picosecond, for which reason clock instability is starting to be one of the most significant factor limiting the precision. This paper provides methods to estimate clock jitter induced error by phase noise PSD measurements.
Keränen Pekka, Kostamovaara Juha Tapio
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Systolic Time Intervals Measured by Pulsed Ultrasound‐Doppler

Acta Anaesthesiologica Scandinavica, 1981
A new method for measuring systolic time intervals (STI) is presented. By using a pulsed ultrasound Doppler‐velocity‐meter, which is able to differentiate the velocity signals, it is possible to pick up signals just above the aortic valve. Combining the velocity signals and an ECG, the STI can be measured.
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Time interval and resolving time measurements using scaling circuits

Physica, 1963
Synopsis Using a time-interval counting circuit, distribution functions of time intervals have been measured for pulses obtained from a G,M. counter in combination with a scaling circuit. For low counting rates the experimental values were in good agreement with those calculated from the theoretical expressions, neglecting the effect of the finite ...
H. Lindeman, E. Mornel
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Measurement of time intervals for time correlated radioactive decay

Physica, 1960
Abstract The distribution of time intervals between successive counts is measured for radioactive decay in the thorium series. The measurements show that the classical Marsden-Barratt law does not apply to this case of time correlated decay. They seem, however, to be in agreement with the theory of Lindeman-Rosen, taking into account that the counter
H. Lindeman, E. Mornel, U. Galil
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Versatile all-digital time interval measuring system

SPIE Proceedings, 2011
This paper describes a design and performance of a versatile all-digital time interval measuring system. The measurement method is based on an interpolation principle. In this principle the time interval is first roughly digitized by a coarse counter driven by a high stability reference clock and the fractions between the clock periods are measured ...
David Vyhlidal, Miroslav Cech
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