Standardisation of DAQ systems with regard to EMC

Haasz, V.; Schumny, Harald

doi:10.1016/s0263-2241(01)00044-6

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…The answer is given by the proposed approach, which tests the system resorting to the same standards used for component devices, yet extending it by also evaluating the uncertainty that arises because of the various configurations that can be given to the system during normal operation. The topic was suggested by the results obtained in previous papers (see [5] and [6], as an example) which show how many features of an analogue-to-digital conversion system are affected by conducted and radiated disturbances, for instance in terms of signal-to-noise and distortion ratio (SINAD), spurious free dynamic range (SFDR), offset and gain, while the reduction in the number of effective bits due to a magnetic field up to 1 MHz has been investigated in [7] and [8] for various configurations and types of DAQ systems. A reference study [9] for the research discussed in the following sections presents extensive results concerning the immunity of PCbased DASs.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty and reproducibility in measuring the data acquisition system immunity to conducted disturbances

Betta

Capriglione

Landi

et al. 2009

Meas. Sci. Technol.

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The paper presents an original methodology for testing the data acquisition system immunity to conducted disturbances and for evaluating the typical uncertainty intervals to be assigned to these kinds of measurements. As in any data measurement system, even in those consisting of a desktop computer equipped with a PCI data acquisition board, several devices and components are involved in the process of acquiring, sampling and digitizing the analogue signal, and eventually presenting the digital values to the user. Therefore, there are many possible coupling paths between the measurement system and external electromagnetic disturbances, in principle both radiated and conducted, which would require a large number of configurations to be tested. Indeed, with particular reference to radiated couplings, their effects generally depend on the adopted test setup. In addition, the electromagnetic boundary conditions of the test site can significantly affect the measurement results. Both these aspects should be carefully taken into account because they are the main cause for ambiguous results and well-known issues in inter-laboratory comparisons. In this framework, the aims of this study are (i) to investigate which components or component configurations influence the data acquisition system immunity most significantly; (ii) to provide a practical way to effectively test these types of measurement system and (iii) to assess the related uncertainty budget in order to qualify the test results. Finally, the site-to-site reproducibility of the measurements has been evaluated by comparing results obtained in two different laboratories.

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Section: Introductionmentioning

confidence: 99%

Uncertainty and reproducibility in measuring the data acquisition system immunity to conducted disturbances

Betta

Capriglione

Landi

et al. 2009

Meas. Sci. Technol.

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Performance of data acquisition systems from user's point of view

Alegria

Girão

Haasz³

et al.

Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412)

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Susceptibility of Dual-Slope ADCs to Electromagnetic Interference: An Experimental Analysis

Quílez¹,

Casas²,

Pallás-Areny³

2007

2007 IEEE Instrumentation &Amp; Measurement Technology Conference IMTC 2007

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Dual-slope analog-to-digital converters are attractive because of its good series mode rejection ratio (SMRR), which highly attenuates interference coupled to the input signal. However, electromagnetic interference (EMI) can also affect the other ports of the converter, and this has received much less attention. This work is an experimental study on the susceptibility of dual-slope ADCs to EMI coupled to their signal, voltage reference and power supply ports. Perturbation has been directly coupled to the port (or ports) under test, while keeping the other ports interference-free. The results show that the supply port is immune to interference but the voltage reference port is quite susceptible. Further, ratiometric measurements do not cancel out interference simultaneously added to the input and voltage reference ports.

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Standardisation of DAQ systems with regard to EMC

Cited by 4 publications

References 1 publication

Uncertainty and reproducibility in measuring the data acquisition system immunity to conducted disturbances

Uncertainty and reproducibility in measuring the data acquisition system immunity to conducted disturbances

Performance of data acquisition systems from user's point of view

Susceptibility of Dual-Slope ADCs to Electromagnetic Interference: An Experimental Analysis

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