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Old 04-03-2012, 05:52 AM   #1
nagabhushan
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NTP accuracy


How can I achieve less than 10 microseconds accuracy in local ntp setup ??
 
Old 04-03-2012, 10:18 AM   #2
michaelk
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Your questions is a bit vague.

There are commercial GPS NTP servers or you can connect a relatively inexpensive GPS receiver to build your own stratum 1 sever. However from what little I know even though GPS time accuracy is <= 1us due to network jitter your overall accuracy will still be >= 50 us.

Update:
After some additional reading.. Using the kernel model and the PPS signal it is possible to get to an accuracy in the 3 us range.

http://www.eecis.udel.edu/~mills/ntp/html/kern.html

Last edited by michaelk; 04-03-2012 at 05:06 PM.
 
  


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