long term jitter rms

Hi all,

Could you please explain some jitter defiinition definitions.

Suppose that we have a sine wave:

I found this defintions:

JitterPeak-to-Peak[p-p] = Jittermax[ps] - Jittermin[ps]

Period Jitter: The maximum change of the signal edge from the expected of ideal position in time


Phase Jitter [Long Term Jitter]: The maximum change of the signal edge from the expected of ideal position over many cycles.
My questions are:

1- Can I deduce from the previous definition that
Period Jitter=(JitterPeak-to-Peak[p-p])/2 ?

2- How many cycle are needed to measure the Long Term Jitter ?
3- Doesn't long term jitter depend on the position in time at which we consider this certain number of cycle?

4- Is rms jitter=JitterPeak-to-Peak[p-p])/sqrt(2)

Thanks in advance.