Home Forums SYSTEM High bit-rate jitter

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    • #14010
      Ravil
      Participant

      Dear optiwave team, what is the best (more precise) way to measure jitter (phase shift) for high bit-rate TDM?

    • #14024
      Damian Marek
      Participant

      If you are modulation scheme is NRZ/RZ on/off keying then you should try the BER Analyzer. It will calculate the Peak-to-peak jitter and RMS jitter value in the results section. Look at the component help for more info.

    • #14026
      Ravil
      Participant

      Thanks for your quick reply, Damain! Usually, more advanced modulation schemes are being used for high bit-rate, e.g. DP, QPSK, etc. Will BER Analyzer be useful for them?

      • #14029
        Damian Marek
        Participant

        You could observe it graphically like in:

        Signal degradation – Jitter

        In QAM there would be multiple levels, but it should be possible to just choose one crossing or take an average of multiple crossings.

    • #14027
      Ravil
      Participant

      Is it possible to useful Clock Recovery component to measure the phase shift and then estimate the jitter? Or Time domain visualizer will be more accurate?

      • #14030
        Damian Marek
        Participant

        I’m not sure how you would calculate the jitter from the phase shift. From my understanding the best way is to look at the eye diagram of a transmitted sequence.

    • #14052
      Ravil
      Participant

      OK, thank you for advice!

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