Hi there,
I have a FMC110 board with DAC5681Z. The problem is that the one of the DACs is not performing as it should, i.e. there is no output signal. The other DAC is OK.
The strange thing I noticed, is that when I do SW_sync, I can see the output of the signal for max 10 us, and after that the signal goes low or shows some other signal, probably the last 8 samples repeating.
So the question is if somebody have had such a problem? It seems that some parts of the DAC are dead, but other parts of the DAC are working.
We tested the same FPGA configuration with another FMC110 and everything is performing OK.
I have attached an image from the scope, where you can see the output signal after SW_sync is asserted.
BR,
Vladica