PCIe 2.0 3.0验证、调试和一致性测试解决方案(14)

PCIe 2.0 3.0验证、调试和一致性测试解决方案

De-embeddingRemoval of signal impairment caused by selected known part of the circuit. Measurement setup often known – i.e., a fixture.When impacts does the test fixture add? What does the signal look like at the Tx, without the fixture?+ + - - Fixt ureMeasuredDe-embedded (calculated in oscilloscope from ‘Measure’ and from network parameters of fixture)… close to the ‘True’TrueMeasure the Fixture (with TDR, VNA, etc) and and capture the network’s parameters (e.g. as a S parameter touchstone file) In the oscilloscope Import the S parameter file, view the waveform as it was at the source.2010-4-26 Tektronix Innovation Forum 20101313

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