[time-nuts] Using cheap sound cards for measurements

Mark Sims holrum at hotmail.com
Fri Aug 21 22:06:28 UTC 2009


Just because the cards have the same ADC clock does not mean that they will be sampling at the same time.  There will be differences in the startup characteristics,  register programming, etc.  that can affect just when the input is sampled.  They may be sampling at the same rate,  but the cards could be an indeterminate number of cycles off from each other.

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