Regarding accumulated long term jitter sim using PSS/PNOISE

Reference:  https://community.cadence.com/cadence_technology_forums/f/33/p/21569/1350850#1350850

I am posting my reply/concern/question  to the above mentioned reference as I am not sure if I will get response ( the reference mentioned is a very old post dating back to 2012 )

Hi Andrew,

I also have been stuck with the problem of selecting the proper fmin in long term ( accumulated ) jitter calculation in PSS/PNOISE sims. I would like to get some more clarification on the last statement "The lower limit of 1kHz is OK, but in practice if K is 1000 you are only including frequencies as low as 10MHz/1000 - i.e. 10kHz. The integration automatically takes this into account - so it's fine to leave it as 1kHz."
Does spectre Jc(K) form always takes Fmin as "Fbeat / K" for integration, irrespective of what fmin value we give ..? Could you kindly point me to the theoretical basis for this "Fbeat / K"...? ( I am asking this because I have not found any literature which clearly specifies the Fmin of integration for K cycle accumulated long term jitter)

Following is my specific scenario.:
I have an experimental/simple RC relaxation oscillator operating at 10MHz. Ran PSS/PNOSE with Fbeat=10MHz. Want to find out the accumulated jitter for 100000 cycles.
In the Jc(K) form, max integration range is set to =Fbeat/2 = 5MHz. I tried different fmin ( like 10Hz ,50Hz , 100Hz ). Follwing are the respective jitter values reported by spectre ==> 431nS , 132nS , 56nS. ==> The values are vastly different. Kindly let me know your thoughts/advice on this as this is inconsistent with the comment you have given.
I am concerned about what value I should give as Fmin... ? Wondering if I am getting this issue due to some setting or version issue ? ( I use Virtuoso 6.1.6-64b )
( Based on your comment, the Fmin in my case should have to be 10MHz/100000 = 100 and Jc(K=100000) values should have to be same if I input Fmin=100Hz or 50Hz or 10Hz )

Highly appreciate your help...

Thanks and regards
Soman - See more at: community.cadence.com/.../1350850