Diagnostic test unit network and system

This application is submitted with a microfiche Appendix consisting of one (1) microfiche with twenty-eight (28) frames. The present invention comprises an apparatus for communicating with, monitoring, and gathering data from a plurality of programmable test devices connected to predetermined points on a network of equipment. The present invention is particularly suitable for x-ray and vascular systems which have multiple pieces of equipment which require maintenance, repair, and adjustment. The apparatus of the present invention can be used in conjuction with an expert system which provides diagnostic and troubleshooting assistance to the field service engineer to provide for faster repair and maintenance of vascular or x-ray systems.