The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Calibration of Frequency Response for a Sampling Oscilloscope

샘플링 오실로스코프의 주파수 응답특성 교정

  • Cho, Chihyun (Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science) ;
  • Lee, Dong-Joon (Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science) ;
  • Lee, Joo-Gwang (Center for Electromagnetic Metrology, Korea Research Institute of Standards and Science)
  • 조치현 (한국표준과학연구원 전자기표준센터) ;
  • 이동준 (한국표준과학연구원 전자기표준센터) ;
  • 이주광 (한국표준과학연구원 전자기표준센터)
  • Received : 2018.01.11
  • Accepted : 2018.05.04
  • Published : 2018.05.31
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Abstract

We herein propose a calibration method for a sampling oscilloscope. The proposed method can correct the systematic errors in the oscilloscope such as time-based distortion and impedance mismatch. In addition, it can accurately estimate the residual jitter that remains after a time-based correction and the scale factor that varies in accordance with the setting of the pulse generator. The proposed method is validated thorough the comparison and verification with the power meter, and the uncertainty of the measurement method is analyzed.

본 논문에서는 샘플링 오실로스코프의 주파수 응답특성을 측정하는 방법을 제안하였다. 제안된 방법은 샘플링 오실로스코프의 계통오차인 시간축 왜곡 현상과 임피던스 부정합에 의한 영향을 교정할 수 있다. 또한 시간축 에러를 교정한 후에 발생하는 잔여 지터와 기준 펄스 발생 조건에 따라 변하는 scale factor의 정확한 추정이 가능하다. 제안 방법의 불확도 분석을 수행하였고, 전력계와의 비교 검증을 통해 제안 방법의 타당성을 보였다.

Keywords

References

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