Patent attributes
There is provided a test system that tests a device under test. The test system includes a test apparatus that tests the device under test on the basis of an event, and an added apparatus that is added between the device under test and the test apparatus when an interval to which a device output signal is changed is smaller than an interval capable of being processed by the test apparatus, and the added apparatus includes a signal input section that inputs the device output signal output from the device under test according to the device input signal, a change detecting section that detects whether the input device output signal has been changed or not, a change timing detecting section that detects the change timing for the device output signal, a storing section that sequentially stores the change timing and the signal value after the change for the device output signal as an output event, according to the fact that the device output signal has been changed, and a reading section that sequentially reads the output events from the storing section to input the events into the test apparatus.
