Specification for radio disturbance and immunity measuring apparatus and methods - Part 4-2: Uncertainties, statistics and limit modelling - Measurement instrumentation uncertainty (CISPR 16-4-2:2011)

This technical document specifies the requirements for determining measurement uncertainty associated with equipment used for radio disturbance and immunity measurements. It provides detailed guidelines on the statistical methods and modeling approaches necessary to evaluate the performance limits of measuring instruments. The scope includes establishing procedures to quantify uncertainties arising from various sources within the measurement process, ensuring that test results are reliable and reproducible. By adhering to these guidelines, organizations can consistently assess the variability inherent in their testing setups. The content focuses on the mathematical framework for analyzing data, addressing how to calculate combined uncertainties and how to apply these findings when setting limits or comparing results against regulatory thresholds. This approach supports the harmonization of measurement practices by defining a unified methodology for handling statistical variations in electromagnetic compatibility assessments. The guidance ensures that measurement results reflect a high level of confidence and are comparable across different laboratories and testing environments.