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Calibration quality

Question asked by bar28 on Apr 20, 2010
Latest reply on Apr 20, 2010 by Dr_joel
I want make normal full 2-port measurement calibration using 8510C (AVG 1024) (0.05-18GHz) with 85054B and 63cm testportcables on both ports. If i want make transmission measurement (testports connected together) without separating the conenction after thru measurement. How good S11, S22, S21 and S12 values should be (dB), that i would say that my calibration is well done? Some estimatates values are enought to know for such a frequency range.