Hi,
I'm relatively new to design of PLL's/DLL's . I have constructed a delay line who's accumulated jitter is to be measured. I measured using :
1. Noise type = "time average" and plotted the PM and integrated it to get the jitter.
2. Noise type = "jitter" option and punched out Jc value.
3. Tran Noise : took each crossing of threshold and calculated the mean, std deviation of Period.
I don't see the results matching. I see there is always a factor of ~2 between 1) and 2). Are these methods consistent with each other? If not what do you suggest to be the right way of measurement of accumulated jitter in the output of a delay line?
Please Help.
Thank you.