Hi Bob, The current setup is: Counter locked ( 10 mhz in ) to the Cesium. Same 10 mhz signal from the Cesium feeds both the inputs and counter is running in “phase difference” so time A-B. That means the resolution will be hiher, I guess, since the counter is counting the “difference” between the two Signals, not the whole 10 mhz. I’m a complete dumdum in maths but I’m sure that somebody here can explain in a simple way. Regards, Giorgio. Hi According to page 1-3 in https://bama.edebris.com/download/hp/5345a/5345a_6.pdf <https://bama.edebris.com/download/hp/5345a/5345a_6.pdf> The 5345 is a 2 ns counter. Roughly speaking, that normally gets you around 2x10^-9 at 1 second. That would suggest there is something a bit off in your setup. Bob > On Oct 29, 2020, at 9:26 AM, Giorgio Barinetti <giorgio at barinetti.it<http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com>> wrote: > > Hi All. > > While I’m waiting for a 5370B to come ( find it cheap and beautiful from France ) I’ve put my old 5345A on a trial, connecting both the > Inputs to the 10 mhz out from an Oscilloquartz 3200 Cesium Oscillator. > > Those are the results. Please advise 😊 > > Regards, > Giorgio. > [cid:image001.gif at 01D6ADF5.5EDF8CF0<http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com>] > <image001.gif>_______________________________________________ > time-nuts mailing list -- time-nuts at lists.febo.com<http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com> > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there.

Hi Ummm ….. errrrr …… not so much :) The time base of the counter is only just so good. I would guess that there is a glitch somewhere in the data transfer / data file formatting. Bob > On Oct 30, 2020, at 1:14 PM, Giorgio Barinetti <giorgio@barinetti.it> wrote: > > Hi Bob, > > > > The current setup is: > > > > Counter locked ( 10 mhz in ) to the Cesium. > > > > Same 10 mhz signal from the Cesium feeds both the inputs and counter is running in “phase difference” so time A-B. > > > > That means the resolution will be hiher, I guess, since the counter is counting the “difference” between the two > > Signals, not the whole 10 mhz. > > > > I’m a complete dumdum in maths but I’m sure that somebody here can explain in a simple way. > > > > > > Regards, > > Giorgio. > > > > > > > > > > Hi > > > > According to page 1-3 in https://bama.edebris.com/download/hp/5345a/5345a_6.pdf <https://bama.edebris.com/download/hp/5345a/5345a_6.pdf> > > > > The 5345 is a 2 ns counter. Roughly speaking, that normally gets you around 2x10^-9 > > at 1 second. > > > > That would suggest there is something a bit off in your setup. > > > > Bob > > > >> On Oct 29, 2020, at 9:26 AM, Giorgio Barinetti <giorgio at barinetti.it<http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com>> wrote: > >> > >> Hi All. > >> > >> While I’m waiting for a 5370B to come ( find it cheap and beautiful from France ) I’ve put my old 5345A on a trial, connecting both the > >> Inputs to the 10 mhz out from an Oscilloquartz 3200 Cesium Oscillator. > >> > >> Those are the results. Please advise 😊 > >> > >> Regards, > >> Giorgio. > >> [cid:image001.gif at 01D6ADF5.5EDF8CF0<http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com>] > >> <image001.gif>_______________________________________________ > >> time-nuts mailing list -- time-nuts at lists.febo.com<http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com> > >> To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there.