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DS92LV2422: configuration of oscilloscope

Part Number: DS92LV2422

Hello,

Our customer use the DS92LV2422 with 33.333MHz.

The customer try to check a eye diagram analysis, have a question about clock recovery.

Could you tell me how to configure oscilloscope?

1st order PLL or 2nd order PLL?

How about  the loop band width and damping factor?

Best Regards,

Naoki Aoyama

  • Hello,

    The customer have a one more question.

    There are two specifications of De-serializer input jitter tolerance on the DS
    First, jitter frequency < 2MHz 0.9 UI. Second, jitter frequency > 6MHz 0.5 UI.
    How should the customer use 0.9 UI and 0.5 UI ?

    Regards,
    Naoki Aoyama
  • Hi Aoyama-san,

    If you have Tektronix Oscilloscope with DPOJET Configurations, DPOJET jitter analysis software is available in the Tektronix DSA and MSO series real time oscilloscopes.

    In the “Configure” and “Clock Recovery” Tabs, set PLL Model = Type II,
    Loop BW = f/15 and Damping = 700m.
    If f = 33.333 MHz, then f/15 = 2.222 MHz, select Apply to All

    We recommend customer uses jitter tolerance at 0.5 UI

    Regards,
    Dennis
  • Hello Dennis-san,

    Thank you for your reply.
    I will feedback the customer this information.

    Thanks,
    Naoki Aoyama