• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 16 subscribers
  • Views 231 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

LMH6586: loop back the video output to the input

Sebastian Schuster
Prodigy 70 points
Part Number: LMH6586

In my application I would like to use the video loss detection capability of the LMH6586-analog video inputs to monitor the analog video outputs as well.

I do have plently of unused video input pins, so that wouldn't be a problem.

Are there any issues that should be considered when looping back in the outputs to the inputs?

Could there a problem for the video input, when the video output is not terminated by a 75R to GND? 

Is there a problem that I could damage the device, if I use the wrong gain for the input?

  • 0
    TI__Expert 3950 points

    Hi Sebastian,

    We haven't seen such a use-case yet, but I don't see any reason why it wouldn't work. 

    You should consider, that the audio signal likely won't be in sync so the SYNC DETECTION feature might not work properly.

    Make sure to operate on the same voltage levels as the video signals if you want to use the VIDEO DETECTION feature.

    Most video equipment uses 75Ohm impedance, but you can work with other impedance.

    For the gain, as long as you stay within our recommended voltages, you shouldn't run into any issues.

    Let us know if you have more questions.

    Best regards,

    Ambroise