This article presents the results derived from the implementation of a reference model for practice of lab of Electronic Instrumentation course. The model uses an Intranet for the virtual sharing of an experiment running in a PC station having the role of the net server. The practical guides tested and methodology for its execution, were done following the Problem Based Learning model, PBL, making special adaptations for engineering. The Intranet management and experiment execution are supported by hardware devices and software both commercial and free.