Re: Quick and dirty GPSDO build by F2DC and me.
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I have missed that, time to get a proper digital scope and actually see what happens to Si5351 output ...
On Wed, May 12, 2021 at 09:09 AM, Dragan Milivojevic wrote:
I'm not quite sure what? you mean with clock stretching, 24MHz and other
usable frequencies are a direct divide from the internal 48MHz clock?
The phase noise is not that great but not that terrible either (subjective standards I know):
2&3 : stability figures are from this system or when when feeding the Si5351 with Neo directly?
12 MHz and 24 MHz. are not just a direct divide from the 48 MHz. clock.? They also stretch the clock pulse output periodically to get the frequency accurately synced to the GPS timing.
If you quickly look at it on a scope it appears that they don't pulse stretch but if you set the trigger for wider than one pulse you will see the stretched pulses like this ...
Roger
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