| 摘要 |
Provided is a testing apparatus for testing devices to be tested which have a pre-emphasis circuit for emphasizing a prescribed component of an output signal and outputting it. The testing apparatus is provided with a filter for removing the emphasized component emphasized by the pre-emphasis circuit from an output signal outputted by the device to be tested, and a testing section for measuring the signal outputted from the filter and judges conformity of the device based on the measurement results. The testing apparatus can accurately test the pre-emphasis function of the device having the pre-emphasis circuit.
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