So, you are increasing the length of the accumulator. What about the D/A then? 73 - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 848-245-9115 -----Original Message----- From: time-nuts <[email protected]> On Behalf Of Bob kb8tq Sent: Wednesday, October 7, 2020 1:55 PM To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] Aging 5065A ? Hi The “normal” 32 bit DDS chips only get you just so far in terms of tuning resolution. If you want to run a fixed / well regulated C Field, a DDS with (say) 48 bits would allow you to tune the device well past parts in 10^-15. There are several DDS chips out there that will do this. Some of the more common ones ( = what you see on eBay) have issues …. Bob > On Oct 7, 2020, at 12:11 PM, Mike Feher <[email protected]> wrote: > > Just curious Bob. What do you mean by higher resolution? Would that be > a longer accumulator and more bits in the D/A? 73 - Mike > > Mike B. Feher, N4FS > 89 Arnold Blvd. > Howell NJ 07731 > 848-245-9115 > > -----Original Message----- > From: time-nuts <[email protected]> On Behalf Of Bob > kb8tq > Sent: Wednesday, October 7, 2020 11:11 AM > To: Discussion of precise time and frequency measurement > <[email protected]> > Subject: Re: [time-nuts] Aging 5065A ? > > Hi > > Yup, Bert has lashed up at least one that way ( I have it here in the > basement). > I am working on a board with a higher resolution DDS than the typical eBay > parts. > > Bob > > ions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] To unsubscribe, go > to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
