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Impedance on Smith Chart using 4396b

Question asked by cdschmit on Aug 6, 2009
Latest reply on Aug 11, 2009 by RayH

I was measuring the input impedance of an antenna on the 4296b.  After calibration, the reflection coefficient looks good and the impedance value appears to be accurate, but the DISPLAY ON THE SMITH CHART does not appear to be normalized to 50 Ohms.  In fact, 50 Ohms appears some great distance to the right (outside of the usual bounds) of the Smith Chart.  Again, the reading it gives is accurate...but I can't use the Smith Chart to interpret the measurement across frequencies!  The reference impedance is set to 50 Ohms.

I would like to know, did I miss setting some other reference value or is it something else?