i use an Agilent 53132A as a TIC and Uli's "Plotter" to analyze the time
interval data of two oscillators. after removing the cycle wraps and the
drift there often remains a repeating pattern that i have not been able
to explain, e.g. TI increases, then drops a little bit and starts to
increase again, etc.
autocorrelating the data reveals clear and nice peaks. today i noticed
that the distance between two peaks is equal to the time from one cycle
wrap to the next.
it is obvious that using frequency dividers and avoiding cycle wraps
would eliminate or at least reduce the problem. but of course i'd like
to understand why this problem arises. any hint will be very much
appreciated!
thank you,
hans
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