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Improved Time-Base for Waveform Parameter Estimation



Bryan C. Waltrip, Owen B. Laug, Gerard N. Stenbakken


An improved gated-oscillator time-base and associated auto-calibration algorithm for use in a high-accuracy sampling waveform acquistion system are described. The time-base architecture consists of a stable 100 MHz gated-oscillator, 24-bit counter chain, and a clock period interpolator. The nominal, uncorrected linearity of the time-base is approximately +/-30 ps. By using an iterative, sine-fit based algorithm, the linearity has been improved to < + /-5 ps. Details of the performance and major sources of error of the time-base and correction algorithm in an equivalent time sampling system are also discussed.
Proceedings Title
Proc. IEEE Instrumentation and Technology Conference (IMTC)
Conference Dates
May 1-4, 2000
Conference Location
Baltimore, MD


auto-calibration, comparator, counter, equivalent-time, oscillator, ramp, sampling, sine-fit, time-base


Waltrip, B. , Laug, O. and Stenbakken, G. (2000), Improved Time-Base for Waveform Parameter Estimation, Proc. IEEE Instrumentation and Technology Conference (IMTC), Baltimore, MD, [online], (Accessed June 24, 2024)


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Created April 30, 2000, Updated October 12, 2021