The purpose of the Electromagnetic Compatibility Laboratory is twofold: On the one hand, it allows to carry out tests, measurements and experiments with total isolation from external electromagnetic interferences and, on the other hand, it is qualified to carry out electromagnetic preconformity tests, which consist of the preliminary measurements that are made to an instrument that must pass subsequently a verification in an official laboratory, to obtain certification of its electromagnetic compatibility. The laboratory is a prefabricated room of 4x4m2 of surface and 2.75 meters of height, with a wide door of two leaves and 1.5 meters of total width. It is lined inside and out with steel sheets and grounded, so that when the door is closed, inside it the electromagnetic radiation is attenuated by more than 100 dB compared to its level on the outside, which means that in practice they do not penetrate. Its conception is also well-known as a "Faraday cage". The laboratory has an electromagnetic interference receiver equipment along with a wide set of antennas and probes to determine the electromagnetic compatibility characteristics of a particular electronic device. It is also equipped with air conditioning, telephone, conventional and uninterrupted power supply, lighting, compressed air and nitrogen gas inlets, antistatic floor and a panel with electronic connectors to allow connection between devices located inside and outside the room. All these accesses are carefully designed and have the necessary filters to maintain the insulation conditions. There is an adjacent area of 20 m2, equipped with specific workbenches for electronics, where external equipment can be located to connect with those in the interior through the connector’s panel. The laboratory is managed by the Electronics Department. The equipment of this laboratory as been partially financed by ERDF funds