On-board compact system for full time-domain electromagnetic interference measurements

Azpúrua, Marco A.; Pous, Marc; Silva, F.

doi:10.1109/aeroemc.2016.7504579

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Finally, if an oscilloscope is used according to the previous point, it allows conducting several synchronized measurements using multiple channels. Hence, using the different input channels simultaneously, it is possible to run the CE test with several current probes, covering different frequency ranges and/or measuring the common mode and differential mode simultaneously [10], [11].…”

Section: Proposed Improvements a Improvements Descriptionmentioning

confidence: 99%

Conducted Emissions Verification Setup Improvement for Space Applications

Pous,

Azpúrua,

Zhao

et al. 2023

2023 International Symposium on Electromagnetic Compatibility – EMC Europe

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Just-before-test verification is needed to ensure that electromagnetic interference measurements are correctly performed. Some standards cover such specific requirements regarding test verification, this is the case of the ECSS-E-ST-20-07c for space applications. However, some drawbacks in the standard procedure have been identified, and in this work, we provide advice for improving the conducted emissions verification. For instance, we argue that the complete frequency range of the test should be evaluated during the verification of the test equipment, not just two single frequencies. Likewise, it is demonstrated how the standard verification setup introduces a significant mismatch that can compromise the accuracy of the result. Moreover, this work highlights the capabilities of novel instrumentation like high-end oscilloscopes that effectively provide convenient alternatives to improve further and simplify the measurement methodology while achieving even more accurate results if applied correctly.

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Section: Proposed Improvements a Improvements Descriptionmentioning

confidence: 99%

Conducted Emissions Verification Setup Improvement for Space Applications

Pous,

Azpúrua,

Zhao

et al. 2023

2023 International Symposium on Electromagnetic Compatibility – EMC Europe

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“…Oscilloscope is a device which can perform broadband measurements in the time domain considerably fast. Due to the very high sampling rate, it can capture rare transient effects [18] with ease and produce useful and accurate spectrograms as shown in [19]. Since they directly sample the received voltage wave, phase information is also stored.…”

Section: Oscilloscopementioning

confidence: 99%

Evaluation of EM Vehicle Environment Measurement Methods for Risk-Based EMC Analysis

Gkatsi

Vogt-Ardatjew

Leferink

2022

2022 ESA Workshop on Aerospace EMC (Aerospace EMC)

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Due to the increasingly implemented electronic devices in modern applications, the electromagnetic environments become more and more complex. Therefore, there is need for such environments to be evaluated, so that potential electromagnetic compatibility issues can be identified and solved. So far, standardized methods have been using conventional measuring techniques such as e.g., superheterodyne receivers, oscilloscopes, etc. These types of devices depict the output data measured over frequency or time, determining the electromagnetic behavior of a system under test in a single domain. Although they are suitable for laboratory tests, a proper description of the real intended electromagnetic environment, where the device would be placed, requires a more careful analysis, especially in order to implement the risk-based EMC approach. Experiments performed in a vibrating intrinsic reverberation chamber representing an example harsh environment, using four different measuring methods show the receiving capabilities of each for better understanding on how an electromagnetic environment could be characterized.

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“…Likewise, there are the FFT-based measuring receivers that take advantage of time-domain measurements to speed up emissions testing and provide time-frequency analysis features, which help evaluate and mitigate interference from transient, timevarying, and stochastic electromagnetic disturbances [3], [4]. Currently, real-time analysers [5], [6], and direct-sampling (DS) implementations using oscilloscopes [7], [8] are two distinct approaches used for FFT-based measuring receivers. Then, more recently, software-defined radio (SDR) modules have been adapted to perform pre-compliance radiated electromagnetic emissions measurements [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Measuring Receiver Benchmark for Conducted and Radiated Emissions Testing in Space Applications

Azpúrua,

Pous,

Solé-Lloveras

et al. 2023

2023 International Symposium on Electromagnetic Compatibility – EMC Europe

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This paper compares the measurement results obtained from three different implementations of measuring receivers regarding spectral level accuracy. The objective is to validate the suitability of direct sampling electromagnetic emissions measurements with respect to those delivered by a highend EMI receiver in frequency swept and FFT modes. The experimental setups follow the verification methods described in the ECSS-E-ST-20-07C Rev.2 standard to set realistic and reproducible conditions. Between 50 kHz and 100 MHz, common mode and differential mode currents are measured when multisine excitation signals with controlled amplitude profiles are used as references. Subsequently, conducted and radiated emissions tests are run to investigate the correlation between measurements with the different receivers. The instruments used are a low-cost USB digitiser Picoscope PS5444D, a high-performance benchtop oscilloscope R&S RTO6 and the R&S ESW44 full-compliant EMI test receiver. The analysis concludes that the emissions measurements performed with the direct sampling approach are excellent for the intended application, exhibiting an accuracy comparable to the dedicated EMI test receiver and a welladequate dynamic range and noise level.

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On-board compact system for full time-domain electromagnetic interference measurements

Cited by 7 publications

References 9 publications

Conducted Emissions Verification Setup Improvement for Space Applications

Conducted Emissions Verification Setup Improvement for Space Applications

Evaluation of EM Vehicle Environment Measurement Methods for Risk-Based EMC Analysis

Measuring Receiver Benchmark for Conducted and Radiated Emissions Testing in Space Applications

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