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  #1  
Old 05-19-2007, 10:39 PM
PTGuy PTGuy is offline
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Default Best clocking option here?

I am running an HD system with the possibility of clocking from 3 options. Internally through the 192 digital I/O, through a Sync I/O or through a Lavry Blue A/D. Which of these is going to give me my most stable clock source?

Thanks in advance!
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  #2  
Old 05-20-2007, 12:03 AM
Andre Knecht Andre Knecht is offline
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Default Re: Best clocking option here?

Internal or Sync I/O.
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Old 05-20-2007, 08:37 AM
PTGuy PTGuy is offline
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Default Re: Best clocking option here?

Quote:
Internal or Sync I/O.
Thanks for the reply.... could you briefly explain why? thanks again!!
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Old 05-20-2007, 11:06 AM
Andre Knecht Andre Knecht is offline
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Default Re: Best clocking option here?

Because a properly-designed internal clock will always exhibit lower jitter than a PPL circuit tasked to follow an external signal. Ironically, this is explained —in rather more detail — by Dan Lavry himself.

http://www.lavryengineering.com/white_papers/jitter.pdf

And…

Here (Less technical.)

IHTH.
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