Programmable impedance transfer standard to support LCR meters

Oldham, N.M.; Booker, S.R.

doi:10.1109/imtc.1994.351955

Cited by 9 publications

(3 citation statements)

References 1 publication

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“…A more promising approach is realized with an imped ance simulator, also called iSimulator. This concept was first proposed in 1994 [204] and since then different designs have been realized [205,206]. More recently, a new design of the iSimulator-based on recently available, high grade elec tronics components-has been proposed [201,207,208] and is briefly described here.…”

Section: Impedance Simulatormentioning

confidence: 99%

Impedance bridges: from Wheatstone to Josephson

Overney

Jeanneret

2018

Metrologia

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This paper reviews the recent evolution of the measurement techniques in the area of impedance measurement from the Wheatstone bridge to the most advanced Josephson based digital impedance bridge. The progress in the development of high sampling rate, high accuracy digitaltoanalog and analogtodigital converters has led to the development of digital impedance bridges that have profoundly modified the landscape of impedance metrology. Although these new bridges do not yet outperform the traditional transformer based bridge in terms of accuracy, they significantly improve their measurement capabilities and flexibility by allowing a complete automation, a full coverage of the complex plane, arbitrary bridge ratios and extended frequency range. In addition, after the redefinition of the International System of Unit, they will contribute to the realization of the henry and the farad by establishing a direct link between the quantized Hall resistance and the capacitance or inductance standards.

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Section: Impedance Simulatormentioning

confidence: 99%

Impedance bridges: from Wheatstone to Josephson

Overney

Jeanneret

2018

Metrologia

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“…To give an example, the "performance test" specified by the manufacturer for the HP/Agilent/Keysight 4284A precision LCR meter requires 14 dedicated standards, each one calibrated at several frequencies. Recently, Overney et al (2014), improving over an older paper (Oldham, 1994), have revived the concept of a digital impedance simulator (Fig. 4); the voltage and current that are read by the meter under calibration are digitally synthesized.…”

Section: Impedance Simulatorsmentioning

confidence: 99%

Traceable measurements of electrical impedance

Callegaro

2015

IEEE Instrum. Meas. Mag.

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“…Several methods have been proposed to overcome this limitation and synthesize, starting from a limited number of calibrated standards, a larger set of calibration values in the same meter range. Among them, we mention the use of inductive voltage or current dividers [2], [3] and of digital electronic synthesizers [4], [5].…”

Section: Introductionmentioning

confidence: 99%

A Capacitance Build-Up Method to Determine LCR Meter Errors and Capacitance Transfer

Tran

D'Elia

Callegaro

et al. 2020

IEEE Trans. Instrum. Meas.

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We present a capacitance build-up method suitable for the determination of the measurement error of a capacitance meter. The method requires only a small number of uncalibrated base capacitors, to be connected in parallel in various combinations, and a single calibrated capacitor, which provides measurement traceability. The outcome of the method is both the determination of the meter error and the calibration of all the base capacitors: it can therefore be considered also a capacitance scaling method. The method's equations, cast in matrix form, express estimates and uncertainties for all the quantities of interest. As an example of application, a commercial LCR meter is calibrated in the ranges (100-1000) pF and (1-10) nF at 1.6 kHz and 10 kHz, with an accuracy at the level of a few parts in 10 6 . The calibration is validated by comparison with a ultra-high accuracy capacitance bridge.

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Programmable impedance transfer standard to support LCR meters

Cited by 9 publications

References 1 publication

Impedance bridges: from Wheatstone to Josephson

Impedance bridges: from Wheatstone to Josephson

Traceable measurements of electrical impedance

A Capacitance Build-Up Method to Determine LCR Meter Errors and Capacitance Transfer

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