Hello. One more thread on the subject of knock-off components... I use cheap RTC modules that use a DS3231 RTC chip (ZS-04). They are satisfactorily accurate and I haven't had surprises in their internal calendar.
Today I measured the 32K output, which is supposed to be 32768 Hz, even though the datasheet often mentions 32K ... that I would read as 32000 Hz. Three out of four modules measured 32699 +/- 2 Hz, and just one was at 32768 Hz (500 MHz counter with OCXO, 10 seconds gate time and Nixies ;) ). This would mean loosing 179 seconds a day, which is not the case. One more info: the three slow guys are DS3231*M*, while the 32768 one is DS3231*SN*. I've never noticed this difference before because I use the 1 Hz output and both have it. Has someone measured the 32k output of their modules and/or can help me understand why the slow guys still keep up with the time? Paolo -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CABj2VaZ13z8DQsoBTp0o5jei945aTdtjJ7aJ3hYq%3DkUiPJAJ_w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
