Intelligent multi-input instrument for electrical measurements

The main characteristics of an intelligent measuring instrument for electrical quantities are outlined, putting in evidence the role of intelligence. Particular emphasis is given to the functional viewpoint, describing the most important subsystems into which the whole equipment can be divided. The main processes performed, such as autoranging, systematic errors correction, autocalibration, automatic estimation of uncertainties, autodiagnosis and instrument-to-user interfacing are also highlighted. The instrument has been completely designed and a good deal of hardware and software has been implemented.