The report describes a library of automated diagnostic test-programs for the real-time input/output section of a digital training simulation research system. The application of such automated test to simulation-system acceptance testing is explored. Included is a description of real-time simulation as a training technique and the Real-Time Simulation Research Systems (RTSRS) for which the test-programs were prepared. Detailed program listings, flow charts, and abstracts of each test and of utility subroutines are also provided.