On Sat, Apr 25, 2020 at 03:19:54AM -0700, Hal Murray wrote: > > David Taylor said: > > With those recommendations, and noting the delays in RPi I/O (at least in > > the earlier RPi cards where Ethernet is over USB), I would suggest that an > > OCXO is overkill. No reason to deviate from the Raspbian OS.
Deviating from Raspbian isn't really anything other than personal taste. I happen to like the BSDs. I'm not opposed to Raspbian as such if it were to simplify things. > > That's an important point. Thanks David. I'm embarrassed that I didn't > mention it. > > On Pi 2 and Pi 3, the Ethernet is on USB which adds a layer of jitter to the > timing you can get using NTP. > Thank you both for this important insight! The only reason I really mention a Raspberry Pi is because my originial idea was to feed the PPS signal into a GPIO pin and the Raspberry is very easy to get a hold off and has GPIO pins. Cordially, Andreas Kempe
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