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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=12235
(Accessed October 10, 2025)
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Improved Time-Base for Waveform Parameter Estimation
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Abstract
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)
Volume
3
Conference Dates
May 1-4, 2000
Conference Location
Baltimore, MD
Pub Type
Conferences
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Keywords
auto-calibration, comparator, counter, equivalent-time, oscillator, ramp, sampling, sine-fit, time-base
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Created April 30, 2000, Updated October 12, 2021