I am attempting to use the "Scale" and "Reference Position" buttons that are on the VNA via a C++ program. I have downloaded and used the C++ driver files that was supplied by agilent with the programming manuals, and i have been able to properly compile and run the rest of the example. I was wondering if there was anyone out there who has experience adding additional functions to the agilent ".h." files? OR how is it possible to properly apply the "SCAL" and "REFP" functions within my C++ code? Any help will be greatly appreciated.