You can read about the various NF instruments in this old Agilent document here:
The MXA and the older PSA are both listed. I've got extensive experience of using the noise figure personality with the Agilent PSA analyser.?
The noise figure option is very powerful on the PSA, but the user interface for the noise figure personality is very clunky in terms of file management.?
Renaming and saving and reloading custom ENR tables on the PSA analyser is really clunky and frustrating to do. This is one area where Windows should be vastly better because the file visibility and file handling will be much better. Hopefully, it will be easier on the MXA.
The plot below is a noise figure measurement of a Philips OM345 gain block as used in the little Marconi 2022 signal generators. This was taken with a PSA analyser. There's also a plot of a PGA103+ LNA up to 1GHz.
It's also possible to configure the analyser to measure the noise figure of active mixers by setting up the GUI as in the other image below. I'd expect the MXA to support this as well. These are really powerful signal/spectrum analysers.
