WTB: Rigol DG-POD-A Logic Signal Output Module

[flo.b]

Hi,

Looking for a Rigol DG-POD-A Logic Signal Output Module.
Since I have a compatible generator lying around, I wanted to try to generate logic patterns.

I have not heard much about this possibility in general, what other *modern* devices can do this? (Old is always good but in this case I'm looking for something compact, not like a huge HP logic pattern generator ;-))

Thanks.