DocumentCode
2185246
Title
Programmable digitally synthesized source for low-frequency calibrations
Author
Oldham, N.M. ; Hetrick, P.S. ; Parker, M.E.
Author_Institution
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fYear
1994
fDate
June 27 1994-July 1 1994
Firstpage
419
Lastpage
420
Abstract
A digitally synthesized source (DSS) designed to calibrate low-frequency (0.1 Hz to 1 kHz) digital voltmeters and thermal converters is described. The DSS output voltage, frequency, and waveform are programmable over the General Purpose Interface Bus (GPIB). The rms value of the output voltage is calculated, with an uncertainty of less than 5 ppm, by measuring the dc voltage of each of the steps used to create the waveform.<>
Keywords
calibration; computerised instrumentation; digital voltmeters; frequency synthesizers; function generators; peripheral interfaces; voltage measurement; 0.1 Hz to 1 kHz; GPIB; General Purpose Interface Bus; dc voltage; digital voltmeters; digitally synthesized source; frequency measurement; low-frequency calibrations; programmable digitally synthesized source; rms value; thermal converters; Calibration; Clocks; Counting circuits; Decision support systems; Digital-analog conversion; Electric variables measurement; Frequency; NIST; PROM; Voltage measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location
Boulder, CO, USA
Print_ISBN
0-7803-1984-2
Type
conf
DOI
10.1109/CPEM.1994.333328
Filename
333328
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