[time-nuts] more teensies

[Bill Dailey]

It would be neat to drive one off a disciplined 16MHz synthesizer and compare.

Bill Dailey


> On Sep 25, 2015, at 1:40 PM, Jim Lux <jimlux at earthlink.net> wrote:
> 
> I ran 5 teensys in parallel, driven from the same Rb source for an hour..
> They track reasonably well.
> The differences are probably due to where they are relative to their neighbors, and where the AC is blowing in my office.  They're all on a single piece of perfboard side by side.  I'll find a cardboard box and some foam to put them in.  (excuse me.. an isothermal atmospheric convection current inhibition system)
> 
> There's a pretty noticeable "turn on" transient, so I should probably wait a few minutes before taking data..
> 
> They're actually run off a 16 MHz crystal, which is presumably multiplied up by 4 internally.
> <5teensyfreq.png>
> <5teensyquadfreqremoved.png>
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