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Calibration of E5052B for phase noise measurements

Question asked by agaurav on Apr 7, 2011
Latest reply on Apr 7, 2011 by tsilchia001
I am using E5052B for phase noise measurements. Do we need to calibrate it for phase noise measurements. E5052B seems to be one of the most accurate instruments I have. In that case, why should I trust some other instrument's, which might be not that accurate, reading for calibrating E5052B for phase noise measurements. I can understand the calibration for s-parameter measurements etc.. but even for phase noise, is it, the calibration of E5052B, required?