The study took place from February to May 2021 and assessed 60 RMCD (30 Coaxial and 30 HDMI). It tested electromagnetic compatibility (EMC) regulations. In sum

The study took place from February to May 2021 and assessed 60 RMCD (30 Coaxial and 30 HDMI). It tested electromagnetic compatibility (EMC) regulations. In summary the results of the study show that: * only 13% of the coaxial RMCD met the respective class A requirements * only 11% of the coaxial RMCD met the screening attenuation or class the manufacturer declared * the EMC quality of the coaxial RMCD assessed during this study was lower than the one of the study carried out in 2012 * only 10% of the HDMI RMCD met an acceptable EMC quality of at least 50 dB coupling attenuation * for both types of RMCD no correlation between price and EMC quality can be seen * spot checks of the mechanical resistance of the samples to pull force stress showed negligible impact The principal conclusions that can be drawn from the study are as follows: * The screening quality of the majority of RMCD in this random sample test is poor * Coaxial RMCD manufacturers use distinct quality declarations on the article for advertising which the products did not meet in the majority of cases and are misleading the customer who is thinking that he is buying a product of a certain EMC quality level * The voluntary certification scheme in the Netherlands might have a slight positive impact on the average quality * The fact that there seems to be no correlation between price and EMC quality could be seen as evidence