[time-nuts] GPS: ADEV or MDEV?

SAIDJACK at aol.com SAIDJACK at aol.com
Mon Apr 23 23:25:06 EDT 2007


 
In a message dated 4/23/2007 18:54:54 Pacific Daylight Time,  
bruce.griffiths at xtra.co.nz writes:


>If an unheated reference exposed to wide ambient temperature  swings is 
>used then hysteresis may be significant when the OCXO is  continuously 
>powered.
>The significance and magnitude of the  effect depends on the range of 
>ambient temperature variations  experienced.

>Bruce


Hi Bruce,
 
in an 'uncontrolled' environment like that one would not get 2-20ppm  retrace 
on the Zener (as speced in the table sent to this group earlier) I  would 
think.
 
bye,
Said



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