Hi,

I find a big difference in jitter calculation from phase noise data and the jitter which SSA returns when I use phase noise trace integration.

The phase noise data I grab is with Average of 4 datas with correlation=4. But, the phase noise trace integration, I observed, seems measurement based on every single plot. So, does it mean my jitter calculation is more accurate? I am getting a huge difference in the values and hence this question. When I cacluate in matlab, from the phase noise plot, I get jitter = X ps and the phase noise trace integration of SSA gives 1.4X ps as jitter value in the same band. I also have SSA-J jitter application which returns similar value as SSA phase noise trace integration.

Which is most accurate way of measurement?

I find a big difference in jitter calculation from phase noise data and the jitter which SSA returns when I use phase noise trace integration.

The phase noise data I grab is with Average of 4 datas with correlation=4. But, the phase noise trace integration, I observed, seems measurement based on every single plot. So, does it mean my jitter calculation is more accurate? I am getting a huge difference in the values and hence this question. When I cacluate in matlab, from the phase noise plot, I get jitter = X ps and the phase noise trace integration of SSA gives 1.4X ps as jitter value in the same band. I also have SSA-J jitter application which returns similar value as SSA phase noise trace integration.

Which is most accurate way of measurement?

I forgot to take into account that its single-side-band noise and hence the factor of 2 was missing and hence this error factor of 1.4 (= sqrt(2))