> # Delta GPS: 3659, Delta RTC: 3660 > # Delta GPS: 3659, Delta RTC: 3659 > > # Delta GPS: 3658, Delta RTC: 1984 > > # Delta GPS: 3658, Delta RTC: 1984 > # Delta GPS: 3659, Delta RTC: 3659 > # Delta GPS: 3659, Delta RTC: 3660
> I would like to ask if somebody did measurement for that Dallas DS32XX > series chips. Is that 1PPS (1HZ square wave) stable there or it has some > issues ? I am thinking that "burp" in my tests could be because of my poor > code or may be because of DS32XX doing temperature conversion every second, > which cause an impact to the 1HZ output. I would be interested to hear any > information about. From the datasheet of DS3231m , that 1HZ from DS32XX > should be stable. My guess would be a software bug, but I don't know anything about what you did there. You might try swapping the two input wires. Do you have a scope? Any overshoot/bounce crap? (Not likely with low power CMOS.) Notice that the 2 strange lines came when the GPS had only 3658 ticks. I have data from one of the DS32xx chips, but I was looking at a 32KHz signal rather than the a 1 Hz. I don't remember any quirks. -- These are my opinions. I hate spam. _______________________________________________ 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.
