[time-nuts] V standards

Steve Rooke sar10538 at gmail.com
Sun Nov 30 01:47:04 UTC 2008


2008/11/30 Bruce Griffiths <bruce.griffiths at xtra.co.nz>:

> In testing high resolution DACs (20+ bits) used in GPSDOs etc a high
> resolution DVM (or equivalent) with low noise and good short term
> stability is useful if not essential.
> Monotonicity and perhaps linearity together with good short term
> stability are generally more important than absolute accuracy.
> Higher resolution is usually accompanied with higher accuracy.
> DVMs like the 3457A. 3456A etc dont have sufficiently low noise or good
> enough short term stability for testing DACs with 24 bit resolution.

Blast! So that's why I can't get good results with my AVO 8 :)

-- 
Steve Rooke - ZL3TUV & G8KVD
Omnium finis imminet



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