If you¡¯re looking to refine your measurement repeatability, do a fresh recal, repeat the sweeps of both induntors under as near exact conditions possible, then recheck your cal to confirm measurement integrity was maintained between cals.
Switches can frustrate repeatability, so its important to have a handle on tolerances in your measurements.
It¡¯s always good practice to do end of test cal checks, and to quantify the variability between duplicate measurements. Its an easy method for determining the boundaries of uncertainty that are attributable to the quality of your test equipment and processes, while also validating the integrity of your results.
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Gary, N3GO
