This Article by John Olah & Sanjeev Gupta (Agilent Tech.) details a technique for creating an accurate behavioral model within the software that avoids the need for manual entry of load pull data.
The 85320A H50 and the 85320B H50 are identical in function to the standard 85320A and 85320B except that the frequency range of operation is 2 to 50 GHz instead of 2 to 26.5 GHz.