Not necessarily so.. My HP Z3815A here (desktop unit) has horrible phase noise and massive spurs. Really to cry over since I know what the internal OCXO (1938A type) is capable of generating. See the attached plot. bye, Said In a message dated 11/26/2010 16:37:26 Pacific Standard Time, [email protected] writes:
So if I want a really souped-up freq standard for my lab, then I should concentrate on finding the best oxco I can (which may be disciplined by the GPS or manually occasionally calibrated to GPS), and use the best power supply I can find. These seem to be what I should concentrate on rather than more channels. I do believe that I read some stuff on the internet that the HP GPS DO's do seem to have very good power supplies (or converters) which contribute to low spurs. So it seems the HP's do have a real advantage (not just the name).
Z3815A_Desktop_unit.pdf
Description: Adobe PDF document
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