I Just got an mso2072a-s, and it's very nice but the documentation leaves something to be desired. I have loaded Ultra Sigma and Ultra Station, modified the ultra station.ini file by adding "MSO2072A,MSO2072A-S" to the DS2000 = line (as described in the giant thread), and Ultrastation does run from ultra sigma and it does recognize the scope.
I have generated a simple wave, and then clicked on Communication -> Download Wave, selected Channel 1, and selected Channel1 output. When I press OK, I do see some activity on the scope screen (input ch 1 is connected to source 1), but it's just low-level random noise.
Quite obviously, I'm missing a step here. I can create arb waveforms manually using the scope's controls, but doing it on the computer would be FAR easier.
Also, while we're on the subject, I can save and load waveforms to a USB stick in .arb format. Is there some magic incantation to get ultra station to save a file in .arb format? Maybe even more to the point, is there some other program I ought to be using?
[update 1]
On further testing, I see that the arb frequency and amplitude do get set when I download the waveform - just nothing comes out.
[update 2]
A friend came over with his brand new DS1074Z-S, and Ultra Station talks to it just fine - I sent it all sorts of waveforms. But it STILL won't talk to my MSO2072A-S. Rigol tech support hasn't answered (though they did acknowledge) my email yet.
[update 3]
I'd like to say "never mind" about the whole thing, but I really need this to work. I have written a quicky c# program to talk to the scope and send some points to the arb generator. It's actually a lot easier than I expected. So, what I'm planning now is to read a .csv or .txt file from Ultra Station and send it to the scope. An extra step, but at least it will work. When it's all cooked up, I'll post it here.