Hi Sandoko,
I mean using the oscilloscope to find out if there are digital signals passing through the jumpers W5 (U_SDIO) and W6 (SDIO). At the moment the board turns on, the USB controller will try to communicate to the DDS using the SPI channel. I just want to know if this communication does happen. When it does, and still the software is saying that it couldn't detect the DUT, it is possible that either the DDS is not functioning.
Best Regards
Louijie