Modular automatic test equipment design for on-platform diagnostics

A modular design for portable automatic test equipment used for on-platform diagnostics is described. The hardware and software architecture of the design are described in detail. The design comprises a core module that houses a processor and the primary instrumentation, measurement, and stimulus hardware of the test equipment. The design also includes an application module that provides platform-specific hardware capabilities and an interface to the system that is being tested. Modularity allows for the test equipment to be easily adapted for use on a wide variety of weapon systems and vehicles. The addition of optional wireless capability further enhances the portability and usability of the automatic test equipment when performing on-platform diagnostic tests and procedures. The test equipment is used in conjunction with a host computer that provides a user interface to the operator and directs the test equipment in interacting with the unit under test. The test equipment can also interact with or be directed by an Interactive Electronic Technical Manual running on the host computer. Communication between the test equipment and the host computer can be abstracted or encrypted as necessary, such that data transmissions are secure and accurate. When combined with vehicle health management systems, test program sets, and other automatic test equipment, the described design helps facilitate a two-level maintenance philosophy for military equipment and fleet vehicles.