Influence of sample aperture on evaluating harmonics of periodic signals using sampling method

Author

Leibing Shi ; Jian Feng ; Bihong Zhou ; Lei Lai

Author_Institution

Shanghai Inst. of Meas. & Testing Technol., Shanghai, China

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

304

Lastpage

305

Abstract

The inherent relationship among frequency of measured signal, aperture time and attenuation of ADC has been revealed through theoretical analysis. A kind of attenuation measurement system which compares the results of asynchronous sampling method and AC/DC transfer method based on thermoelectric conversion is built to verify the relationship. Attenuation is compensated and the consistency between two methods is within 20μV up to 60th harmonic with the fundamental voltage of 0.5V, 50Hz.

Keywords

analogue-digital conversion; attenuation measurement; harmonics; signal sampling; thermoelectric conversion; time measurement; AC-DC transfer method; ADC; aperture time measurement; asynchronous sampling method; attenuation measurement system; compensation; frequency 50 Hz; harmonics evaluation; periodic signal sampling method; signal measurement; thermoelectric conversion; voltage 20 muV to 0.5 V; Accuracy; Apertures; Attenuation; Attenuation measurement; Frequency measurement; Harmonic analysis; Sampling methods; ADC; Asynchronous sampling; compensation; harmonic voltage; sample aperture;

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.2014.6898380

Filename

6898380