[volt-nuts] New Life of the Solartron 7081
FabioEb at quipo.it
Thu Jan 10 11:02:49 UTC 2013
Although way above my knowledge and skills,
thank you very much for sharing, excellent
work and read, Mickle!!
Il 2013-01-10 10:08 Михаил ha scritto:
> At last I completed the repairing and modifying the Solartron 7081
> Zener reference was totally dismounted and replaced with DIY LTZ1000
> Moreover the floating logic PLL clock was made a switchable to
> crystal oscillator
> with a lower phase noise.
> After all, low-frequency noise is halved to 0.028 ppm (better than
> Keitley 2002,
> Datron 1271 and Advantest 6581T), TempCo is less 0.2 ppm/C, long-term
> approximation is 1-2 ppm/year.
> Mickle T./iddqd2001
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