Title :
Automated non-coherent sampling THD meter with spectrum analyser
Author :
Maslan, Stanislav ; Sira, Martin
Author_Institution :
Czech Metrol. Inst., Brno, Czech Republic
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;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898472
