Hi Ed, no problem. It's an issue when some companies claim 2ns, when it's really 5ns. Or show phase noise plots that seem to be measurements of just the oscillator removed from the board and measured in a clean-room environment, not measurements of the module with all the digital control noise and spurs etc added.. bye, Said In a message dated 3/30/2012 10:29:32 Pacific Daylight Time, ed_pal...@sasktel.net writes:
Hi Said, On 3/30/2012 10:53 AM, Said Jackson wrote: > Hello Ed, Azelio, > > We should also compare the same parameters. Sawtooth error of the m12+ of +/-25ns is not its standard deviation, it's max/min. Compare that number to your 30ns max/min measurement on the 5372a. Yes, you're right. Thanks for the clarification. > Standard deviation of the m12+ is around 2ns with correction. That needs to be compared to the 5ns you measure on the 5372a as that is the best performance you will get from the CW12. Yes the uncorrected 1pps of the m12 is worse, but it is designed to be used with correction. So in the end the m12m still performs better than the CW12. That's why I suggested to the OP that if the Commsync II uses sawtooth correction the CW12 might not improve his performance. The limited command set you mentioned in your other message is another potential problem. Ed _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.