Hi Power supply noise would be the first thought.
Next up would be grounding inside the Thunderbolt (card to case, connectors to case). Bob On Mar 9, 2010, at 7:32 AM, Christophe Huygens wrote: > Hi, > > I noticed several vendors on Ebay have the t-bolt on sale. > > However, the once showing their own PN plots seem to get only > -115, -120 dBc/Hz at 100Hz. Yet, > http://www.leapsecond.com/pages/tbolt/noise.htm seems > to have mucht better results: up to -150 depending on > power supply. > > By multiplying to 1GHz I also seem to be getting something > like -75 or - 80 rather than -110. > > Any thoughts? > > Christophe > on4iy > > > > _______________________________________________ > 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. > _______________________________________________ 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.
