On 11/2/19 2:55 PM, Achim Gratz wrote: > The one for the Ethernet controller is useless even for the seemingly > intended application. Replacing the main crystal with a TCXO may or may > not help NTP performance depending on how much temperature effects are > currently dominating it.
Right, I don't expect a benefit there. Since the board has both, if I got one, I'd probably wire them both up just because. >> It's a rather permanent modification, as you have to desolder the >> stock crystals and replace them with wires going to the hat. I'm not >> 100% sure how to order the hat yet, but they gave a price of $46 (USD) >> via email. > > You'd be much better off taking not of the injection point and then use > a GPS timing module that can produce a clean 19.2MHz clock. I still > have that way down on my to-do list; although I was going to try and > inject the clock without actually desoldering the crystal so it would > still work even when the GPS module doesn't provide a clock. How would it work to have two crystals connected in parallel? -- Richard _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
