USB Jitter

Hi all,

Does anyone know of an inexpensive, low-cost way of measuring
"jitter" on a USB bus (fot the D= and D- signals)? Any help is
greatly appreciated. I know that Tektronix and HP have solutions.
I mean low cost. Thanks

Thought USB is an asychronous bus, it is jittering all the time? Sorry f I am mistaken on that.

Anyway we are on wrong forum.