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PNA-X noise figure calibration- measurement plane inquiry

Question asked by d_finz on Jul 31, 2013
Latest reply on Aug 1, 2013 by Dr_joel
I'm performing a NFX measurement using ports 1 and 2 on my N5241A.  I'm trying to perform a scalar noise calibration on the Port 2 low noise receiver; I'm using a 346B as the noise source.
During the calibration, the calibration wizard will prompt to connect the noise source to the "port 2 measurement plane" which I'm interpreting to be at the end of the cable I have connected from Port 2 to the DUT; is this interpretation correct or do I need to remove the cable and connect the noise source directly to the Port 2 connector?  

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