[time-nuts] NCOCXO anyone?

Hal Murray hmurray at megapathdsl.net
Fri Jul 22 15:15:39 EDT 2016

richard at karlquist.com said:
> That's what we tried to do with the E1938A.  A multiplying DAC is used based
> on a reference that is ovenized instead the crystal oven.  That certainly
> eliminated the tempco issue with the reference, but then we discovered 1/f
> noise on the reference.  We had to redesign with a different reference. 

That still leaves the temperature quirks of the DAC and amplifiers.

Has anybody put the DAC and all of the analog stuff inside the oven?  Seems 
like an obvious idea so somebody has probably patented it.

These are my opinions.  I hate spam.

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