Hi Geoffrey!
Well, the good news: It works! Thanks so very much for your effort!
There are some glitches where the three cards are a bit off for one sample,
but I can't outrule the possibility that this is some kind of noise.
Now, a final(?) question on this topic:
How on earth did you find that?
The 10MHzRefClock is (AFAIK) never mentioned as a terminal in the C reference.
It is only mentioned briefly, for example in the Get/Set/Reset functions
like "Exported_10MHzRefClk_OutputTerm", but even there, not as a terminal.
Anyway, thanks heaps!
Jens