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Why does VNA not need the sex of a 3.5 mm calibration standard/

Question asked by drkirkby on Aug 29, 2012
Latest reply on Aug 31, 2012 by Dr_joel
I'm using a 3.5 mm 85033E 9 GHz calibration kit in an 8720D VNA. 

When doing the calibration, it asks for an open, short load and thru, but it does not need one to specify the sex of the connector to which the calibration standard is connected. Given that the parameters of the male open will be different from the female open, and the male short will be different from the male short, I can't understand why the VNA does not need information about the sex of the connector. 

If I try a similar thing with an N calibration kit, I have to select the sex of the test port. I can't see why 3.5 mm should be any different from N. 

Obviously I would not expect to have to specify the sex on a sexless connector like APC-7, but 3.5 mm is not sexless.