Test apparatus and performance board for diagnosis

A test apparatus, configured such that a test module is replaceable with another kind of test module, that tests a device under test using the test module, comprising:

• a plurality of test modules, including the test module and the another kind of test module, that transmit/receive signals to/from the device under test to test the device under test;
• and
• a performance board for diagnosis that diagnoses 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 of the plurality of test modules to diagnose the plurality of test modules;
• a plurality of inter-board to module connectors arranged corresponding to the plurality of test modules, each of which connects the corresponding test module to the circuit for diagnosis;
• and
• a plurality of sub-boards each of which includes thereon at least one of the plurality of inter-board to module connectors and is replaceably fixed to the motherboard to fix the at least one of the plurality of inter-board to module connectors to the motherboard,
• wherein each of the plurality of sub-boards has a fixing part which replaceably fixes each of the plurality of sub-boards to the motherboard, and
• wherein each fixing part has substantially the same structure.