Automated non-coherent sampling THD meter with spectrum analyser

Author

Maslan, Stanislav ; Sira, Martin

Author_Institution

Czech Metrol. Inst., Brno, Czech Republic

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

488

Lastpage

489

Abstract

This paper describes an automated non-coherent sampling THD meter based on the 24 bit digitizer National Instruments PXI 5922. The THD meter is designed for a frequency range up to 1 MHz with analysis of the harmonics up to 6 MHz. Contrary to commercial devices developed THD meter displays a signal spectrum and gives user the possibility to evaluate impurities in the signal affecting THD calibration and allow the selection of an appropriate number of evaluated harmonics.

Keywords

analogue-digital conversion; automatic meter reading; calibration; computerised instrumentation; digital instrumentation; harmonic distortion; signal sampling; spectral analysers; PXI 5922; THD calibration; automated noncoherent sampling THD meter; digitizer National Instruments; frequency 1 MHz to 6 MHz; impurities evaluation; signal spectrum analyser; Frequency measurement; Harmonic analysis; Instruments; Measurement uncertainty; Noise; Power harmonic filters; Uncertainty; ADC. harmonic distortion; THD; sampling; signal spectrum;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898472

Filename

6898472