The book describes the basics of adjustment and adjustment of avionics units and units, discusses the main methods for their implementation. The description of measuring instruments, design principles and production technology of REA based on microelectronics are given. The second edition has been amended in connection with new circuit solutions in the field of design and adjustment of REA. The book is intended for the training of students in secondary vocational schools, and can also be used in the professional training of workers in production.