Were you the one that bought that $50 DFX-2100 off eBay? It had been listed for months and then it was gone. The only one remaining is $500. Was about to make a best offer on that one when I remembered our thread.
You connected the converters in the correct order when you went from the deck to the DFX-2100, then DFX-2100 to the AJA C10PS. This should have worked. As I recall the CFX-2100 on eBay was a “no way to test it”, therefore as-is, situation.
Very simple really.. the dfx-2100 converts the parallel composite to parallel component. It is the one thing it is designed to do and it has the correct connectors to do that. I have used them for that purpose. The C10PS converts the parallel component to serial component. I have not used the AJA C10PS, but according to its description it should be the device for the job. It is described as a parallel to serial converter where the “output” follows “input”. Parallel Component in, Serial component out. Parallel Composite in, Serial Composite out. I have one but can’t use it without the DFS-2100.
In my setup I had an ACCOM parallel to serial converter. A single rack unit sized device. I used it downstream from the DFX-2100 and it did the trick. There is no ACCOM resembling this device on eBay today. It is NOT the ACCOM d-bridge, that is another animal.
I’m thinking the problem you have is with the DFX-2100. Even testing it would be difficult, no device I know of today that can even display a standard def parallel component signal.
My next solution will be a INNOVISION DX210 D2 TO D1 TRANSLATOR. I’ll let you know how that works out