[time-nuts] First success with very simple, very low cost GPSDO

Hal Murray hmurray at megapathdsl.net
Thu Apr 10 19:25:39 UTC 2014

kd0gls at mninter.net said:
> I should have said warm start, not cold. I was referring to the code, not
> the oscillator. So tell me, the OCXO is warm, there's no previous EFC
> information to draw upon, and the oscillator is off-frequency by more than
> can be measured with, let's say eight timer bits. What do those early
> measurements tell me, and which direction from midway should the EFC be
> adjusted? 

What's the tuning range of the osc?  1 ppm is 1 usec or 10 counts at 100 ns.  
10 ppm is 100 counts.  That fits in 8 bits.

These are my opinions.  I hate spam.

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