• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 29 subscribers
  • Views 490 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DLPLCR6500EVM: Pattern noise in optical spectrum

Jim Jacob
Prodigy 205 points

Part Number: DLPLCR6500EVM

I am using the 6500EVM in a spectrometer application. I scan the spectrometer from 400 to 700 nm. My spectral trace shows spiking behavior throughput the scan. I have checked all the components and it appears that the DMD is the culprit. Could it be that the DMD is dithering and that translates into spectral dropouts? I don't see the problem when I directly detect the light (no spectrometer). Thanks Jim

  • 0
    TI__Expert 4530 points
    Hi Jim,

    Welcome to DLP section of TI E2E community. Can you please post some pictures of issue?

    -ykc
  • 0
    TI__Guru 54225 points
    Hello Jim,

    Your application sounds quite interesting.

    Can you describe your setup and methodology for taking the spectrum using the DMD? Including triggers, timings, operation mode (i.e. Video, Video Pattern, Pattern-on-the-Fly).

    Images are always helpful. It is difficult to determine the cause without this kind of information.

    If you are not comfortable sharing in a public forum, the send a Friend Invite to Fizix and/or kyc.

    Fizix