here is the ADEV plot from my overnight test with the DOCXO. * * *
This was done without any loop adjustment whatsoever, same board and
software that drives the on-board TCXO. I will let the result speak
for itself,
save to say the loop, the DAC, the DAC reference, and the GPS with a proper
OCXO can achieve performance at a level approaching two orders of
magnitude better than our spec which is 1ppb for this particular product.
Thanks for the ADEV plot, Said -- more pertinent for most time nuts
purposes than PN. Of course, the typical performance of the LTE-Lite
with the TCXO is significantly better than the spec (according to the
user manual, about 5e-11 at 1 second and 1e-10 at 10 seconds, already
1 to 1.5 OOM better than spec), so the typical improvement with the
OCXO wouldn't be a full two orders of magnitude. Still, very
noteworthy performance that *surely* justifies time nuts in buying
one of the good, cheap OCXOs flooding the surplus market to go along
with their LTE-Lite. Good show.
Best regards,
Charles
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