Well, as a designer and manufacturer of nixie clocks which incorporate the fine Dallas 3231 "Extremely Accurate" on board TXCO RTC, I never have my own clocks running for more than a few weeks before I've pulled them to tinker with either the software or hardware! Instead I have to relay on reports from customers whose clocks drift by less than 5 seconds per year (once initially calibrated, which of course I do). Not sure about the longer term stability, though.
There were "lesser" RTC devices, but I think the DS3231 tops the list for accuracy. Dallas used to run a "real time demo" site, showing how one of their development boards had run over several years, and I recall only gained 30 seconds in five years or so. Seems that site has gone, now? -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
