[EMAIL PROTECTED] wrote: > Hi Tom, > > this was the recommended setup (by HP) for checking the internal noise. Feed > the 10MHz output back to the input using a short cable, and set the unit for > "COMMON" input, setting 50 Ohm impedance etc. > > In the meantime I did some more tests, and found the following: > > 1) The sine-wave output is crappy. The sine wave has some sort of > "Class-B" cross-over distortion, and it measures a whooping 200ps RMS jitter > on my > Wavecrest jitter analyzer (>400ps pk-pk). Compare that to 2.7ps RMS jitter I > measure on our Fury 10MHz output. Definitely the crystal got damaged, or > something else. > > The unit has about 2x better jitter performance (around 50ps RMS) if I feed > a clean Fury 10MHz into it. I think the 10811 OCXO or the internal driver > circuit may have gotten damaged. > > > thanks, > bye, > Said > Said
Can you send an image of the rear panel sinewave output waveform? Bruce _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
