Design of table-driven ATE models in a simulation environment

A set of generic IEEE-488 instrument-simulation models is described. The evolution of the design from earlier, less flexible, dedicated automatic test equipment (ATE) models is traced, along with the driving interface requirements and application environment. The higher-level application environment, in support of test program set (TPS) development for electronics modules used in US Air Force weapons systems, is also explained. The ATE models play a key role as part of a functional-unit-under-test (UUT) simulation tool, used during TPS integration to assist in software debug/test and modification. The top-down software design of a typical instrument model is presented, with emphasis on the functional and reusable nature of the model template. Equipment characteristic tables isolate interface and command-level programmability features from executable code. Potential applications for the ATE simulation approach are summarized, and benefits of using the approach are related with respect to increased capabilities, faster integration time, and ease of model control