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Regarding the PNOISE analysis Form for sampled Noise analysis

RFStuff

Dear All,

I am seeing the PNOISE analysis form for sampled case, as below:-

For, Edge Crossing mode, I see Edge Number and Sleep time.

I am confused here.

Like PAC/PXF, the pnoise should have Thresold Value and Edge Direction options.

But, what is the use of Edge Number and Sleep TIme here ?

Can anybody please clarify on this.

  • The pnoise analysis for sampled jitter was revamped a few releases back and this was to allow the signal for the trigger to be separate from the signal where you make the noise measurement. As part of that, you can specify which edge of the clock (the trigger) is used - you might have a signal which has multiple periods during the PSS period and so you can specify which of those edges you want (most likely though the edge number will be 1 though). Also, the sleep time is a delay (which you can leave blank if you don't want it) so that the noise is sampled at a time point delayed by that time from the threshold crossing of the trigger signal.

    Andrew

  • in reply to Andrew Beckett

    Thanks  a lot Andrew for the clarification.

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