Abstract: A testing system, in particular for weapons and avionics applications, includes a bus interface unit capable of operating as a bus controller, a remote terminal, and a monitor. The bus interface unit is compatible with military standard buses and is controlled using an enhanced Atlas test programming language. Test instruments are provided on cards using a two-part architecture in which common test instruments are arranged as part of a core tester unit while application-specific enhanced are controlled by a separate microprocessor in a functional interface unit.

Abstract: A portable programmable electronic tester capable of automatically testing a large number of different types of electronic units is disclosed. The operation of the tester is governed by a self-contained microcomputer. A programmable stimulus subsystem provides desired stimuli to a unit under test and a programmable response measuring subsystem measures specified output parameters of the unit under test. A programmable switching subsystem selectively connects the unit under test to the stimulus and response measuring subsystems via an interface device adapted to connect the unit under test to the tester. A test program designed to test the operating characteristics of a particular unit under test is stored in a bubble memory cassette.