TLK2711-SP: TXCLK Jitter

I measured the jitter of txclk.

Should the value of the red square box in the picture be less than 40ps?

What is the meaning of tj max, min of the blue box in the picture?

Hi,

I would probably rely more on the min/max since those seem better correlated with the mean and std deviation.  Do you know what probability level was used for this measurement?  It seems strange that peak-peak is less than min/max.

Thanks,
Drew

Please refer to the below figure.

Is the maximum jitter generated 498.72ps?

Should I compare the 40ps specified in the datasheet with maximum jitter value of the measured Tj? 

Hi Drew.

I don't understand the meaning of peak to peak of total jitter(Tj). Total jitter has a mean, maximum and minimum value.

Isn't peak to peak period jitter or TIE?

I will try to measure it again.

Please tell me how to set up the oscilloscope for measuring TXCLK.

1. If the FPGA bypasses the clock, can I set the recovery clock as a constant clock?

2. Can I set the BER 1E12?

3. How do I set up HPF or LPF?

Thank you for all your assistance.

Hi Dean,

I am looking into this and will get back to you with more details tomorrow.

Thanks,

Drew

Hi Dean,

Apologies for the delay.  I am working on getting advice from a teammate who is more knowledgeable about clock jitter measurements.  I should have an update early next week.

Thanks,

Drew