Patent ID: 8330471
Filing Date: 2012-12-11
Classification: G01R

Abstract:
1. A test apparatus for testing a device under test, comprising: a signal generating apparatus that inputs a pattern signal into the device under test; a signal detecting apparatus that detects an output signal output from the device under test; and a judging section that judges whether the device under test is acceptable based on the output signal detected by the signal detecting apparatus, wherein the signal detecting apparatus comprises: an output terminal of the device under test for outputting the output signal is connected to a first input terminal of the first comparing section and a first input terminal of the second comparing section, an output terminal of the timing generating section for outputting the second timing signal is connected to a second input terminal of the second comparing section and an input terminal of the delay circuit, an output terminal of the delay circuit for outputting the first timing signal is connected to a second input terminal of the first comparing section, an output terminal of the first comparing section is connected to a first input terminal of the selecting section, and an output terminal of the second comparing section is connected to a second input terminal of the selecting section.