Patent attributes
A test apparatus being capable of replacing a test module with the other kind of test module that tests device under tests by using the test module is provided. The test apparatus includes a plurality of test modules that transmit/receive signals to/from the device under tests to test the device under test; and a performance board for diagnosis that diagnose the plurality of test modules. The performance board for diagnosis including: a motherboard provided common to the plurality of test, modules; a circuit for diagnosis that transmits/receives a signal to/from each test module to diagnose the test module; a plurality of inter-board to module connectors that connect between the corresponding test module and the circuit for diagnosis; andplurality of sub-boards each of which has at least one of the inter-board to module connectors and is fixed to the motherboard to fix the inter-board to module connectors to the motherboard.