Actually, there is no "internal" A/D->D/A connection in Drezno. The connection between these two halves is provided only by the ribbon cable. Drezno is shipped with the cable plugged both sides to it, however when you add more Leibniz modules you have to break this loop. The "link" button in Drezno uses the binary data arriving from the ribbon cable as the default inputs to the DAC, however each of the bits can still be replaced from the front panel. By unlinking you just remove the normalization, so that all unused DAC inputs are zero. This allows to use the DAC independently from what happens at the ADC and is further processed.mgscheue wrote: Suppose you have the ribbon cables connected so that Drezno goes into Jena and then back into Drezno in a loopback With link active, that decouples the internal A/D -> D/A connection in Drezno, right?
You just replace the default state of these inputs which results from the normalization. Hence, if "link" is activated you replace the data that arrives through the ribbon cable. In this way, you can bypass any combination of bits from the whole chain of Leibniz processing. For example, you may have bitf 0..5 processed by Jena, but bits 6 and 7 being the original data bits from A/C half of Drezno.What happens, then, if you self-patch individual 8-bit outs to ins on the Drezno? Nothing, I imagine?
All these combinations are possible.But then, again, with link active, you could take the bit outputs on the Jena and put them into the bit ins on the Drezno, correct? And that would override the ribbon connection for those particular bits? Or you could turn off link and patch the individual bits back into Drezno however you like?
Both. There is even a possibility to create digital feedback and build a complex finite state machine by taking bits from Jena outputs and plugging them back to Lipsk which is between Drezno and Jena*.And a Lipsk could be used to invert bits going into Jena, pre-transformation, or out of Jena, post-transformation, correct? Or both if two Lipsks were used?
*note: plugging a bit into Lipsk yields an Exclusivve-OR operation with the corresponding bit arriving through the ribbon cable.