[time-nuts] FE-5680A Results so far
hmurray at megapathdsl.net
Wed Dec 28 14:09:03 EST 2011
> Just got my fe5680 yesterday. Seems to work but the fe5680 is the most
> accurate reference I have. So how to test it? I plan to buy a Thunderbolt
> but until then, anyone have any creative ideas?
I assume you have a GPS with PPS.
Get one of TVB's picPETs. (or do it yourself) Clock it from your FE5680.
Collect the data...
If you have a good scope, you can use your GPS to calibrate the oscillator in the scope. Trigger on a PPS pulse, delay 1 second to look at the next pulse. That pulse will be slightly off. That offset is due to the error in your scope oscillator.
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