A communication system includes self-test means for automatically testing its performance. The communication system is adapted for use between an implantable device, such as a pacemaker, and an external device, such as the pacemaker's programmer. The communication system includes in the external device...http://www.google.fr/patents/US4979506?utm_source=gb-gplus-shareBrevet US4979506 - Self-test system and method for external programming device
Self-test system and method for external programming device