A new AC voltage standard

Author

Katzmann, Fred L., Sr.

Author_Institution

Ballantine Labs. Inc., Boonton, NJ, USA

fYear

1988

fDate

20-22 Apr 1988

Firstpage

285

Lastpage

291

Abstract

An AC voltage standard has been developed for the 10 Hz to 1 MHz frequency range for rapid calibration of precision 6.5-digit AC voltmeters. Absolute calibration uncertainness of 37.5 p.p.m. in the 40 Hz to KHz range have been demonstrated over a 90-day calibration interval. A fast-responding vacuum thermal element and null-comparing AC to DC converter as well as a stable linear low-distortion analog phase-shift oscillator have been devised to assure stability and performance of the new instrument. Microprocessor control includes IEEE-488 bus capability. Digital calibration permits closed-loop computer-aided calibration and performance verification using a programmable AC-DC transfer standard

Keywords

calibration; computerised instrumentation; convertors; digital voltmeters; measurement standards; 10 Hz to 1 MHz; 6.5-digit AC voltmeters; AC voltage standard; IEEE-488 bus; closed-loop computer-aided calibration; computerised instrumentation; digital voltmeter calibration; linear low-distortion analog phase-shift oscillator; null-comparing AC to DC converter; stability; vacuum thermal element; Calibration; DC-DC power converters; Frequency; Instruments; Microprocessors; Oscillators; Standards development; Thermal stability; Voltage; Voltmeters;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1988. IMTC-88. Conference Record., 5th IEEE

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/IMTC.1988.10868

Filename

10868