| 摘要 |
Provided is a test apparatus, a differential signal transmission circuit, and a transmission circuit that transmits signals between an input terminal and an output terminal, comprising a first high frequency signal passing section that blocks a low frequency signal that has a frequency less than a predetermined reference frequency in a signal received from the input terminal, and transmits a high frequency signal that has a frequency greater than or equal to the predetermined reference frequency to the output terminal; an input-side low frequency signal passing section that passes the low frequency signal in the signal from the input terminal and attenuates the high frequency signal; an output-side low frequency signal passing section that transmits to the output terminal the low frequency signal passed by the input-side low frequency signal passing section and attenuates the high frequency signal from the first high frequency signal passing section; and a switching section that switches a connection between the input-side low frequency signal passing section and the output-side low frequency signal passing section.
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