[time-nuts] GPSDO control system

[Bob Camp]

Hi

If you have a source of “noise” that is not in your model *and* it’s significant, then your model will not predict the outcome. That’s true if it’s in or if it’s outside the loop bandwidth.

Bob

On Mar 23, 2014, at 2:27 PM, Hal Murray <hmurray at megapathdsl.net> wrote:

>> 4) How much do the DAC, reference, op-amps, resistors, capacitors, drift with time? 
> 
> Assuming constant temperature and supply voltage...
> 
> What is the time scale for parts drifting?  Is it very low frequency so well 
> within the loop bandwidth or is it jumps that will be hard to filter out?
> 
> What happens if temperature or voltage is not constant?  Are the changes 
> reasonably linear with temperature/voltage?
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 
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