Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Analysis of the Application of an Information and Measurement System for Detecting Defects in Electronic Components V.YU. RYABCHENKO The demand for electrical measuring devices is increasing every year, which leads to the opening of new companies. Existing companies, in order to maintain their market segment and position, are increasing the number of products and reducing costs. This leads to the appearance of defective products. To eliminate defects in the production process in a timely manner. enterprises are implementing defect detection systems. The information and measurement system being developed for detecting installation defects processes the measured signals using the principal component method. The operation of the system begins with the automatic construction of a circuit model of the electronic unit under study with a defect. The construction is implemented on the basis of design documentation (an electrical circuit and a list of components used). When designing the circuit, control nodes are specifi ed in which voltage values are recorded at certain time points. The registration of values is implemented both in the real object under study and in the circuit model. The control nodes are identical. After that, the data is processed, the resulting arrays are transformed into the space of the main components, the coordinates of the points of the main components are calculated and their construction in a new space. The key feature of the method is the calculation of the distance between the points of the main components of the circuit model and the electronic unit with defects. Based on the difference in the values of the distance between the points, the system makes a conclusion about the nature and location of the defect in the circuit. This system will speed up the process of detecting malfunctions in electronic components at various stages of manufacturing electrical measuring products. Keywords: digital twin, principal component method, validation, information and measurement system, signal. DOI: 10.25791/pribor.5.2025.1583 Pp. 32-37.