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DLP4500EVM External trigger stopped working

Bryan Chong
Prodigy 150 points


Hi there,

I have been using external triggering in the pattern sequence mode , and it suddenly stopped working. It definitely responds to sequence trigger, but not to pattern trigger. I checked incoming triggering signal, which works fine. I'd appreciate if you could suggest me some aspects to check further.

Thanks,

  • 0
    TI__Genius 13235 points
    Hi Bryan,

    Did anything change about your setup? Was is moved or disassembled/reassembled? Did you check that the trigger is making it all the way to the connector that plugs into the LightCrafter4500? I would suggest getting the system running and probe the back of the input trigger connect on the EVM and make sure the signals look correct there.

    Thanks,
    Clinton
  • 0 in reply to Clinton Rodgers
    Prodigy 150 points
    Hi Clinton,

    It seems as if a closed circuit of external trigger input has been damaged. That is why it did not work. I worked around to synchronize using external trigger output.

    Thanks a lot!