An AC quantum voltmeter for frequencies up to 100 kHz using sub-sampling

Behr, R.; Palafox, L.

doi:10.1088/1681-7575/abe453

Cited by 11 publications

(4 citation statements)

References 33 publications

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“…All deviations are substantially within the specifications of the instrument [66]. Furthermore, the digitizer is very well suited for differential measurements in an AC quantum voltmeter [67]. However, both investigations show that sampler has a limited linearity and stability.…”

Section: Characterisation Of Dynamic Performance Of Digitizers 321 Dy...mentioning

confidence: 94%

A method for using Josephson voltage standards for direct characterization of high performance digitizers to establish AC voltage and current traceability to SI

Ireland

Reuvekamp²,

Williams³

et al. 2022

Meas. Sci. Technol.

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A method for traceability to SI for ac voltage and current based on high performance digitizers is presented. In contrast to the existing thermal-based methods, the proposed method utilizes direct traceability to quantum-based waveforms via the use of Josephson voltage systems. This allows not only a simplification of the traceability chain and reduced measurement times but also offers the potential for analysis of the ac voltage and current waveform spectral content, a feature which is not possible using thermal methods. Scaling of current and voltage is achieved by the use of current shunts and resistive voltage dividers respectively. Target operating ranges are up to 1 A and 100 V with a frequency range up to 1 kHz for both. The corresponding target uncertainty for this traceability route is 1 μVV-1 and 2 μAA-1 up to frequencies of 1 kHz. The traceability chain is described and various components are characterized to validate their suitability for this task. It is demonstrated that these uncertainty targets can be met under certain conditions. The use of multi-tone calibration waveforms is investigated to further reduce measurement time. An uncertainty analysis method based on simulation using real component performance data is demonstrated.

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Section: Characterisation Of Dynamic Performance Of Digitizers 321 Dy...mentioning

confidence: 94%

A method for using Josephson voltage standards for direct characterization of high performance digitizers to establish AC voltage and current traceability to SI

Ireland

Reuvekamp²,

Williams³

et al. 2022

Meas. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, this rather limited frequency range does not qualify them as wideband AC voltage standards. Therefore, for the leading NMIs, intensive work has been underway to increase the frequency range to at least 100 kHz [13]. This includes developing and applying sub-sampling methods based on comparing high-frequency non-quantum, semiconductor-based generators with the low-frequency quantum voltage only in a specific and short space of time in many consecutive periods [7].…”

Section: Introductionmentioning

confidence: 99%

Wideband AC Voltage Standards

Kubiczek,

Kampik,

Grzenik

et al. 2024

PAR

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This article presents a critical review and comparison of constructions and metrological properties of contemporary wideband standards for AC voltage. It focuses on selected thermal voltage converters (TVCs) used in alternating current-direct current (AC-DC) transfer voltage standards and for the most precise measurements of AC voltages up to approximately 100 MHz. These devices serve as primary AC voltage standards at National Measurement Institutes (NMIs).

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“…To date, differential sampling of AC voltages [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] based on a programmable Josephson voltage standard (PJVS) has been mainly performed using an integrating sampler, Keysight 3458A (K3458A) 3 or a Δ-Σ analogue-to-digital converter, * Author to whom any correspondence should be addressed. 3 Disclaimer: certain commercial equipment, instruments, or materials are identified in this paper to adequately specify the environmental and experimental procedures.…”

Section: Introductionmentioning

confidence: 99%

“…However, the AC ripple effect of the filter cannot be ignored when extending the frequency range for sampling measurements beyond tens of kilohertz [15,20].…”

Section: Introductionmentioning

confidence: 99%

Differential sampling of AC waveforms based on a programmable Josephson voltage standard using a high-precision sampler

Kim¹,

Cho²,

Solve³

2022

Metrologia

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A high-precision sampler, Fluke 8588A multimeter in the sampling mode, was utilised to perform differential sampling of AC waveforms with a programmable Josephson voltage standard. The systematic error on the differential sampling, induced by the inherent voltage-response characteristics and built-in low-pass filter of the sampler, was estimated. Experimental results and numerical simulations revealed that the sampler could be used for reliable differential sampling of AC waveforms at frequencies up to several kilohertz, with an appropriate number of the voltage steps per the waveform period, when the input bandwidth was set to 3 MHz. In addition, the sampler was compared to an integrating sampler, Keysight 3458A, now widely used for differential sampling. At 62.5 Hz, a key frequency in the future on-site key comparison of the differential sampling on AC voltage, the difference in RMS-amplitude values obtained by the differential sampling using the two different samplers is approximately 150 nV/V due to the systematic error caused by the limited bandwidth of 150~kHz for the integrating sampler.

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An AC quantum voltmeter for frequencies up to 100 kHz using sub-sampling

Cited by 11 publications

References 33 publications

A method for using Josephson voltage standards for direct characterization of high performance digitizers to establish AC voltage and current traceability to SI

A method for using Josephson voltage standards for direct characterization of high performance digitizers to establish AC voltage and current traceability to SI

Wideband AC Voltage Standards

Differential sampling of AC waveforms based on a programmable Josephson voltage standard using a high-precision sampler

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