Emi measurement is a fundamental methodological approach within the field of electromagnetic compatibility (EMC), focused on the systematic quantification and characterization of electromagnetic interference (EMI). This concept investigates the electromagnetic emissions generated by electronic systems and their susceptibility to external electromagnetic phenomena. Key characteristics include the use of specialized instrumentation, such as spectrum analyzers and oscilloscopes, for analyzing electromagnetic signals across various frequency and time domains, encompassing distinct emission and immunity testing procedures. Its significance lies in ensuring the functional integrity, reliable operation, and regulatory compliance of electronic systems by identifying and assessing potential interference issues that require mitigation.