Hi Bob, Agreed that at a minimum the instrument will restrict the bandwidth due to it's own bandwidth limitations, and some (like the Wavecrest units) go up to 1GHz or more. But many vendors claim sub 1ps jitter on low cost oscillators, and don't specify what bandwidth was used to measure this jitter. That would be like giving phase noise in dBc without also specifying the /Hz, and then every vendor using their own internal bandwidth definitions to make their phase noise claims.. Sometimes I think vendors assume that E5052A units are being used everywhere to measure jitter. bye, Said In a message dated 8/15/2010 17:34:09 Pacific Daylight Time, [email protected] writes:
Hi The bandwidths chosen generally have roots in a telcom spec. Infinite bandwidth generally equates to infinite jitter. You have to restrict it somehow. Bob _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
