RESEARCH OF RELATION OF SAMPLERS FREQUENCY CHARACTERISTICS / STROBAVIMO ĮTAISO DAŽNINIŲ CHARAKTERISTIKŲ SĄRYŠIO TYRIMAS

This paper proposes an algorithm to reduce limitations in band-width measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The traditional swept sine-wave method allow measure only magnitude response. Phase response can be computed only if a sampler is a minimal pha...

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Published inScience future of Lithuania Vol. 8; no. 3; pp. 282 - 288
Main Author Tankeliun, Tomaš
Format Journal Article
LanguageEnglish
Published Vilnius Gediminas Technical University 01.06.2016
Subjects
Online AccessGet full text
ISSN2029-2341
2029-2252
DOI10.3846/mla.2016.933

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Abstract This paper proposes an algorithm to reduce limitations in band-width measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The traditional swept sine-wave method allow measure only magnitude response. Phase response can be computed only if a sampler is a minimal phase circuit. In this paper alternative bandwidth measurement algorithm using the nose-to-nose method with measurements corrections for the non-idle properties of oscilloscope is de-scribed. Algorithm includes for noise, time base distortions and jitter in measurement signals corrections methods. Proposed algorithm allows to measure phase and magnitude responses when only two similar oscilloscopes and the source of sync pulse are used. Algorithm performs as well as the swept sine-wave method in case when both samplers have the same frequency characteristics. Stroboskopiniai osciloskopai skirti matuoti sparčius periodinius signalus naudojant sąlyginai nesparčius didelio skiltiškumo analoginius-skaitmeninius keitiklius. Vienas iš pagrindinių stroboskopinio osciloskopo mazgų, užtikrinančių, kad osciloskopo charakteristikos atitiktų metrologinius reikalavimus, ir kuriame vyksta matuojamo aukštadažnio signalo spektro transformacija į žemų dažnių sritį, yra strobavimo įtaisas. Šiame darbe pateikiamas strobavimo įtaiso veikimo principas, nagrinėjami įtaiso dažninių charakteristikų matavimo būdai taikant pastovios amplitudės, kintančio dažnio harmoninio virpesio ir priešpriešiais sujungtų strobavimo grandinių metodus. Gauti rezultatai rodo, kad nagrinėjamas strobavimo įtaisas nepriklauso minimalios fazės grandinių klasei ir apskaičiuoti įtaiso dažninę fazės charakteristiką (DFCh) iš dažninės amplitudės charakteristikos (DACh) neįmanoma, tačiau taikant priešpriešiais sujungtų strobavimo grandinių matavimo metodą galima gauti įtaiso DACh ir DFCh nenaudojant papildomos aukštadažnės matavimo įrangos ir mažinant matavimo proceso trukmę.
AbstractList This paper proposes an algorithm to reduce limitations in bandwidth measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The traditional swept sine-wave method allows to measure only magnitude response. Phase response can be computed only if a sampler is a minimal phase circuit. In this paper alternative bandwidth measurement algorithm using the nose-to-nose method with measurements corrections for the non-idle properties of oscilloscope is described. Algorithm includes noise, time base distortions and jitter in measurement signals corrections methods. Proposed algorithm allows to measure phase and magnitude responses when only two similar oscilloscopes and the source of sync pulse are used. Algorithm performs as well as the swept sine-wave method in case when both samplers have the same frequency characteristics. Keywords: sampling oscilloscopes, frequency response, minimal phase circuit, Hilbert transform, sampler. Stroboskopiniai osciloskopai skirti matuoti sparcius periodinius signalus naudojant salyginai nesparcius didelio skiltiskumo analoginius-skaitmeninius keitiklius. Vienas is pagrindiniu stroboskopinio osciloskopo mazgu, uztikrinanciu, kad osciloskopo charakteristikos atitiktu metrologinius reikalavimus, ir kuriame vyksta matuojamo aukstadaznio signalo spektro transformacija i zemu dazniu sriti, yra strobavimo itaisas. Siame darbe pateikiamas strobavimo itaiso veikimo principas, nagrinejami itaiso dazniniu charakteristiku matavimo budai taikant pastovios amplitudes, kintancio daznio harmoninio virpesio ir priespriesiais sujungtu strobavimo grandiniu metodus. Gauti rezultatai rodo, kad nagrinejamas strobavimo itaisas nepriklauso minimalios fazes grandiniu klasei ir apskaiciuoti itaiso daznine fazes charakteristika (DFCh) is daznines amplitudes charakteristikos (DACh) neimanoma, taciau taikant priespriesiais sujungtu strobavimo grandiniu matavimo metoda galima gauti itaiso DACh ir DFCh nenaudojant papildomos aukstadaznes matavimo irangos ir mazinant matavimo proceso trukme. Reiksminiai zodziai: stroboskopinis osciloskopas, daznine charakteristika, minimalios fazes grandine, Hilberto transformacija, strobavimo itaisas, priespriesiais sujungtu strobavimo grandiniu (PSSG) matavimo metodas, kintancio daznio harmoninio virpesio (KDHV) matavimo metodas.
This paper proposes an algorithm to reduce limitations in band-width measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The traditional swept sine-wave method allow measure only magnitude response. Phase response can be computed only if a sampler is a minimal phase circuit. In this paper alternative bandwidth measurement algorithm using the nose-to-nose method with measurements corrections for the non-idle properties of oscilloscope is de-scribed. Algorithm includes for noise, time base distortions and jitter in measurement signals corrections methods. Proposed algorithm allows to measure phase and magnitude responses when only two similar oscilloscopes and the source of sync pulse are used. Algorithm performs as well as the swept sine-wave method in case when both samplers have the same frequency characteristics. Stroboskopiniai osciloskopai skirti matuoti sparčius periodinius signalus naudojant sąlyginai nesparčius didelio skiltiškumo analoginius-skaitmeninius keitiklius. Vienas iš pagrindinių stroboskopinio osciloskopo mazgų, užtikrinančių, kad osciloskopo charakteristikos atitiktų metrologinius reikalavimus, ir kuriame vyksta matuojamo aukštadažnio signalo spektro transformacija į žemų dažnių sritį, yra strobavimo įtaisas. Šiame darbe pateikiamas strobavimo įtaiso veikimo principas, nagrinėjami įtaiso dažninių charakteristikų matavimo būdai taikant pastovios amplitudės, kintančio dažnio harmoninio virpesio ir priešpriešiais sujungtų strobavimo grandinių metodus. Gauti rezultatai rodo, kad nagrinėjamas strobavimo įtaisas nepriklauso minimalios fazės grandinių klasei ir apskaičiuoti įtaiso dažninę fazės charakteristiką (DFCh) iš dažninės amplitudės charakteristikos (DACh) neįmanoma, tačiau taikant priešpriešiais sujungtų strobavimo grandinių matavimo metodą galima gauti įtaiso DACh ir DFCh nenaudojant papildomos aukštadažnės matavimo įrangos ir mažinant matavimo proceso trukmę.
This paper proposes an algorithm to reduce limitations in bandwidth measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The traditional swept sine-wave method allows to measure only magnitude response. Phase response can be computed only if a sampler is a minimal phase circuit. In this paper alternative bandwidth measurement algorithm using the nose-to-nose method with measurements corrections for the non-idle properties of oscilloscope is described. Algorithm includes noise, time base distortions and jitter in measurement signals corrections methods. Proposed algorithm allows to measure phase and magnitude responses when only two similar oscilloscopes and the source of sync pulse are used. Algorithm performs as well as the swept sine-wave method in case when both samplers have the same frequency characteristics.
This paper proposes an algorithm to reduce limitations in band-width measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The traditional swept sine-wave method allow measure only magnitude response. Phase response can be computed only if a sampler is a minimal phase circuit. In this paper alternative bandwidth measurement algorithm using the nose-to-nose method with measurements corrections for the non-idle properties of oscilloscope is de-scribed. Algorithm includes for noise, time base distortions and jitter in measurement signals corrections methods. Proposed algorithm allows to measure phase and magnitude responses when only two similar oscilloscopes and the source of sync pulse are used. Algorithm performs as well as the swept sine-wave method in case when both samplers have the same frequency characteristics. Santrauka  Stroboskopiniai osciloskopai skirti matuoti sparčius periodinius signalus naudojant sąlyginai nesparčius didelio skiltiškumo analoginius-skaitmeninius keitiklius. Vienas iš pagrindinių stroboskopinio osciloskopo mazgų, užtikrinančių, kad osciloskopo charakteristikos atitiktų metrologinius reikalavimus, ir kuriame vyksta matuojamo aukštadažnio signalo spektro transformacija į žemų dažnių sritį, yra strobavimo įtaisas. Šiame darbe pateikiamas strobavimo įtaiso veikimo principas, nagrinėjami įtaiso dažninių charakteristikų matavimo būdai taikant pastovios amplitudės, kintančio dažnio harmoninio virpesio ir priešpriešiais sujungtų strobavimo grandinių metodus. Gauti rezultatai rodo, kad nagrinėjamas strobavimo įtaisas nepriklauso minimalios fazės grandinių klasei ir apskaičiuoti įtaiso dažninę fazės charakteristiką (DFCh) iš dažninės amplitudės charakteristikos (DACh) neįmanoma, tačiau taikant priešpriešiais sujungtų strobavimo grandinių matavimo metodą galima gauti įtaiso DACh ir DFCh nenaudojant papildomos aukštadažnės matavimo įrangos ir mažinant matavimo proceso trukmę. Reikšminiai žodžiai: stroboskopinis osciloskopas, dažninė charakteristika, minimalios fazės grandinė, Hilberto transformacija, strobavimo įtaisas, priešpriešiais sujungtų strobavimo grandinių (PSSG) matavimo metodas, kintančio dažnio harmoninio virpesio matavimo metodas.
Audience Academic
Author Tankeliun, Tomaš
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10.1109/ARFTG.2000.327397
10.1109/TMTT.1966.1126342
10.1109/MMW.2007.383954
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Snippet This paper proposes an algorithm to reduce limitations in band-width measurements of sampling oscilloscopes then using a swept sine-wave measurement method....
This paper proposes an algorithm to reduce limitations in bandwidth measurements of sampling oscilloscopes then using a swept sine-wave measurement method. The...
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SubjectTerms Analysis
Bandwidth
frequency response
Hilbert transform
Measurement
minimal phase cir-cuit
Oscilloscopes
Properties
sampler
sampling oscilloscopes
Waveforms
Title RESEARCH OF RELATION OF SAMPLERS FREQUENCY CHARACTERISTICS / STROBAVIMO ĮTAISO DAŽNINIŲ CHARAKTERISTIKŲ SĄRYŠIO TYRIMAS
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