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PNA Calibrated with wrong system Z0?

Question asked by waveguy on Dec 4, 2012
Latest reply on Dec 4, 2012 by Dr_joel
I'm using a PNA and sometimes take measurements with a waveguide kit, so I have to set the system impedance to 1ohm.  When I go back to taking measurments with coax, I sometimes forget to set the Z0 back to 50ohms until after I've calibrated and taken my measurements.  Does anyone know of a way I can process my measurements to correct them without having to go back and recalibrate and remeasure everything?  To be clear, I've calibrated the PNA with a 50ohm cal kit, but the system Z0 setting on the PNA was set to 1ohm while I was calibrating and taking my measurements.