Migrating TPSs to next generation ATE

The author discusses the problem of how to completely migrate existing TPSs (test program sets) to next-generation ATE (automatic test equipment). Two scenarios are examined-one in which the migration takes place within a vendor´s product line and one in which the choice is made to change vendors. Real industry solutions to these problems based upon Schlumberger´s extensive background in ATE are discussed. The concept of a neutral engineering database is explored, and CADDIF (Computer Aided Design Data Interchange Format) is presented as a concrete example of such a database. CADDIF provides an open architecture and a bridge between simulation and testing that allows the simulator and the ATE to remain independent of each other. CADDIF allows fully independent development of test programs. It enables engineers to use their favorite simulator for development of their own test vectors. fault dictionaries, etc. Through the use of CADDIF as an exchange medium, these data can be moved not only from simulator to tester but between simulators as well. With CADDIF, the simulation of a unit under test can remain independent of the target ATE. CADDIF allows complete test programs to be quickly converted to a form that permits the simulations to be rerun