Specifications

The light trace is the full 3-port calibration result while the dark trace
uses the Flexible Calibration method. Aside from some minor
differences due to trace noise (measurement done with a very wid
IFBW with no averaging), the traces overlay completely. As expected
there is no difference, but only five parameters were measured per
cycle instead of nine. This method works for partially connected DUTs,
such as those discussed previously.
Other application notes (e.g., Three and Four Port S-parameter
Measurements, 11410-00279) or Anritsu customer service can be
consulted for more information on the various types of calibrations
possible.
MEASUREMENT LRL/LRM
CALIBRATION CALIBRATION
MS462XX OM 7-37/7-38
Figure 7-9. Example Comparing Flexible Calibration Results with Full 3-Port Calibration Results