I am taking an output impedance measurement using the 3-port (voltage / current) method. Here is my calibration test setup:
I feel this is a very good test setup, and these are the shortest cables I can readily locate. Everything has the look and feel of "good working order" or is brand new. I used the J2102B as I assumed I would have low output impedance and in Steve Sandlers text, "Power Integrity", page 142 he discusses using the J2102B in this location for low impedance measurements. Here are the 1 ohm calibration results.
Despite my best efforts I cannot remove the noise at the higher frequencies. I would like to verify that this is an expected result, or if something is incorrect in the test setup.
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