SDP-H1 and EVAL-AD7768-4FMCZ stopped operating

I was using the SDP-H1 board with the EVAL-AD7768-4FMCZ daughter board when the LabView software appeared to hangup after the SAMPLE button was pushed (it had successfully worked several times previously). I used Windows TASK MANAGER to terminate the LabView software, pushed the reset button on the SDP-H1 board then removed the 12V power jack and unplugged the USB connection.

I re-connected the 12V supply then plugged in the USB connector. Device Manager confirmed the presence of the USB driver, but only the BF_POWER LED illuminated (previously several LEDs were on. Launching the LabView software produced a "Waiting for transfer from Controller" message to be displayed for sometime before an "Error 1172" message was displayed.

When the board was operating correctly, the FPGA_DONE LED was on. Because this LED is no longer on I assume the FPGA is not being programmed (?).

How do I get this board to work ?

regards,

Richard

  • I have made some voltage measurements on the SDP-H1 board to help diagnose the problem:

    3V3 FPGA measures 3.308V

    2V5 FPGA measures 2.499V

    1V23 FPGA CORE measures 1.229V

    VADJ FPGA at R179 measures 0.286V

    VADJ FPGA at R180 measures 0V

    1V8_DDR2_VDDO measures 0V

    0.9V DDR2 measures 0V

    3V3 FMC measures 0V

    +5V0 at R176 measures 5.03V

    These measurements made with the daughter board plugged in and powered by +9V, SDP-H1 board powered from +12v and USB connected to PC.

  • Thank you Niall. It is possible the boards became disconnected during operation as the mated boards do not sit flat on the bench as the  EVAL-AD7768-4FMCZ feet are way too short. My suggestion would be too include a couple screws with EVAL-AD7768-4FMCZ, as it appears to be designed to only plug into the SDP-H1.

    My follow up question is which board is most likely damaged - the SDP-H1 or the EVAL-AD7768FMCZ ?

    regards,

    Richard