Hi guys, it turns out I achieve the best results with an E1938A driven by a Fury board, compared to my PRS-10 Rb. I have not tried a Fury GPSDO with a standard DOCXO yet, but suspect similar results - that test to follow next week. The standard deviation over 15 hours is about 2.3ns, the range less than +/-8ns. Please see the attached plot. The E1938A has only been turned on less than 2 days after a very long power-off period (4+ months), but it is already very stable. Next step is to see which of the two is better, after that how much STS improvement can be gained by removing the GPS disciplining. bye, Said In a message dated 11/25/2009 17:20:40 Pacific Standard Time, [email protected] writes:
We demonstrated thermal gains of over 1 million in the E1938A single oven oscillator. You don't need a double oven. Rick Karlquist N6RK
<<inline: E1938A_PRS10.gif>>
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