DocumentCode
845641
Title
A calculable, transportable audio-frequency AC reference standard
Author
Oldham, Nile M. ; Hetrick, Paul S. ; Zeng, Xiangren
Author_Institution
NBS, Gaithersburg, MD, USA
Volume
38
Issue
2
fYear
1989
fDate
4/1/1989 12:00:00 AM
Firstpage
368
Lastpage
371
Abstract
A transportable AC voltage source is described in which sinusoidal signals are synthesized digitally in the audio-frequency range. The root-mean-square (r.m.s.) value of the output waveform may be calculated by measuring the DC level of the individual steps used to generate the waveform. The uncertainty of this calculation at the 7-V level is typically less than ±5 p.p.m. from 60 kHz and less than ±10 p.p.m. from 30 Hz to 15 kHz
Keywords
measurement standards; voltage measurement; 30 Hz to 1 kHz; 60 kHz; 7 V; AC voltage source; DC level; audio-frequency range; sinusoidal signals; transportable audio-frequency AC reference standard; voltage measurement; Clocks; DC generators; Decision support systems; Feedback loop; Impedance; Laboratories; Metrology; Signal synthesis; Switches; Voltage;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.192308
Filename
192308
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