[time-nuts] Fury Interface Board: 5MHz needed?

[SAIDJACK at aol.com]

In a message dated 11/7/2007 16:21:48 Pacific Standard Time, didier at cox.net  
writes:

>I  believe the problem is that the EFC closed loop has a significant  time
>constant, so any current variation that is faster than the EFC  loop time
>constant will induce an uncorrectable error (at least as far  as the EFC loop
>is concerned). With a separate ground pin, or a circuit  designed to
>compensate for the effects of ground pin current, there  will be no such
>error.



That's right!
 
plus for a control loop to correct any error, it must experience  and measure 
an error in the first place.
 
But that's exactly what we are trying to prevent - experiencing phase  errors.
 
bye,
Said



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