EMC Measurement Feasibility Study for Automated Test System
Moilanen, Joona (2022)
2022
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2022053113740
https://urn.fi/URN:NBN:fi:amk-2022053113740
Tiivistelmä
The objective of this thesis was to study and test the possibility of performing electromagnetic compatibility measurements with an automated test system. This thesis starts with theory part of the electromagnetic compatibility and presenting the spectrum analyzer and accessories needed for the measurements. The measurements were performed at the automated test systems location, to get the interferences from the devices in the same environment.
H-field probes were used for the measurements in this thesis. Larger diameter of the probe has big impact on the measurement results due to its higher sensitivity, which causes ambient interferences to appear much higher compared to a probe with smaller diameter.
Based on the measurements in this thesis, electromagnetic compatibility measurements can be performed with the automated test system. The results concluded that the ambient interferences appear on certain frequency ranges, which can cause the measurement results to disappear under the interferences on specific measurements if the desired measurement frequency range overlaps the ambient interferences.
The automated test systems changing surroundings need to be acknowledged, because some devices around the automated test system might cause interferences on frequency ranges which were not visible in the measurements performed during this thesis.
H-field probes were used for the measurements in this thesis. Larger diameter of the probe has big impact on the measurement results due to its higher sensitivity, which causes ambient interferences to appear much higher compared to a probe with smaller diameter.
Based on the measurements in this thesis, electromagnetic compatibility measurements can be performed with the automated test system. The results concluded that the ambient interferences appear on certain frequency ranges, which can cause the measurement results to disappear under the interferences on specific measurements if the desired measurement frequency range overlaps the ambient interferences.
The automated test systems changing surroundings need to be acknowledged, because some devices around the automated test system might cause interferences on frequency ranges which were not visible in the measurements performed during this thesis.