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Group delay measurement of Downconverter

Question asked by muhendis on Jan 25, 2016
Latest reply on Feb 1, 2016 by Dr_joel
I want to measure group delay of one stage down converter module with PNA-X. Module's input output requirements are given below.

RF Swept:
LO: Swept
IF: Fixed

The question is that how can I measure group delay of downconverter with swept LO. Which method is preffered for this measurement?
My PNA-X has VMC and SMC+phase option.