Hi,
I just published the first version of my "VMA Spectrum Analyser Software for HP 8590 Series" on my blog:
https://vma-satellite.blogspot.com/2019/03/vma-spectrum-analyser-for-hp-8590.htmlThis version is basically the same in terms of functionality, as the other three versions (for R&S CMU200/CRTU, Siglent SSA3000X and SMA/NWT devices).
It allows to apply many modern measurements, based on the spectrum sweeps of these devices.
The software is free to use, but requires an activation code every 3 months. Against a "donation fee" I offer a permanent activation key.
Right now I am unable to show the software in action, as both my HP 8594E have broken PSU's...

Waiting for them to be fixed. Once the devices are up and running, I will post some pictures and videos.
Feel free to try and use the software. It requires Keysight Connection Expert 2018.
Regards,
Vitor