I came to know that during PT SI crosstalk analysis calculation , The first step is to consider infinite arrival window to nets , i.e nets can switch any time . I have few doubts
1) Is this infinite arrival window considered for aggressor/victim or both ?
2) Why is it done ?
3) wont it make calculation more pessimistic ?
yes it is pessimistic and done on victim nets assuming that the aggressor can affect at any time in the window. It is done since it takes very less run time. User can control the number of iterations as and when required as of the design situation.