NIST Sampling System for Accurate AC Waveform Parameter Measurements

Published

April 1, 2007

Author(s)

David I. Bergman

Abstract

This paper summarizes efforts at the National Institute of Standards and Technology to develop a waveform sampling and digitizing system with accuracy comparable to that of an ac-dc thermal transfer standard for ac voltage measurements over the frequency range of 10 Hz to 1 MHz. In the frequency range from 1 kHz to 1 MHz, the sampler''s gain flatness is better than that available from the best commercial digital multimeter. In ac-ac comparisons referenced to 1 kHz, the system agrees with a NIST-calibrated thermal transfer standard to within 17 uV/V from 20 Hz to 100 kHz for measurements made at both 1 V and 0.1 V. The sampler?s excellent dynamic linearity and flat input impedance are also discussed.

Citation

IEEE Transactions on Instrumentation and Measurement

Report Number

32335

Volume

56

Issue

2

Pub Type

Journals

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Keywords

Analog-digital conversion, Frequency response, Gain measurement, Markov processes, Measurement standards, Signal sampling

Citation

Bergman, D. (2007), NIST Sampling System for Accurate AC Waveform Parameter Measurements, IEEE Transactions on Instrumentation and Measurement, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32335 (Accessed October 13, 2025)