Forgot to mention there are 2 tables of through data, table 3 which is used during calibration (all PIN's disabled #0000), and table 4 which is used for performance verification (#0200 - 2 PIN's enabled).
This means that the verification measurement has little in common to the calibration process.?? The same 2 PIN's are used during calibration but if anything was wrong with those it will show up as a discrepancy in S11/S12 or S22/S21
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Wayne
