[time-nuts] Hanging bridge question
lists at rtty.us
Tue Mar 25 20:58:37 EDT 2014
There have been multiple posts about analog TDC’s of various designs that get you into the sub 100 ps range without costing very much money. I believe the cheapest posted so far adds < 50 cents to a basic PIC based design.
On Mar 25, 2014, at 7:38 PM, Jim Miller <jim at jtmiller.com> wrote:
> The lowest cost solution is to do the correct entirely in software.
> After the measure the phase, simply add the correction.
> All you need to know is the phase. There is not point in correcting
> the pulse, you don't need a corrected pulse. What you want is a
> measurement of the phase.
> I'm baffled as to how one would do this in software without a ton of
> expensive hardware to give phase information. Could you provide in words a
> simple block diagram of where you would get phase information without a Ghz
> TIC to read?
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