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Publication Citation: Improved Time-Base for Waveform Parameter Estimation

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Author(s): Bryan C. Waltrip; Owen B. Laug; Gerard N. Stenbakken;
Title: Improved Time-Base for Waveform Parameter Estimation
Published: May 01, 2000
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: Proc. IEEE Instrumentation and Technology Conference (IMTC)
Volume: 3
Pages: pp. 1518 - 1522
Location: Baltimore, MD
Dates: May 1-4, 2000
Keywords: auto-calibration;comparator;counter;equivalent-time;oscillator;ramp;sampling;sine-fit;time-base;
Research Areas: Energy Conversion, Storage, and Transport
PDF version: PDF Document Click here to retrieve PDF version of paper (3MB)