measure IMD PSK31 , JT65, HF digital modes?

[jeffcrilly]

Would it be possible to use the RedPitaya to measure IMD on my HF radio sound-card-driven JT65 station?

E.g. there PSK-meter: http://www.ssiserver.com/info/pskmeter/pskmeter.pdf
And IMD-Meter (though it seems no longer in production): http://kj3n.ddns.net:8080/
Or doable with a second radio and Digipan: http://psb-info.net/IMD-measurement.html

It would seem to me the RedPitaya spectrum analyzer , or Pavel Demin's SDR + HPSDR, could do this.

Any thoughts?

-jeff
n6zfx