[ntp:questions] Re: Linux PPS triggering with NMEA

David Schwartz davids at webmaster.com
Mon May 9 23:44:34 UTC 2005

"Bjorn Gabrielsson" <bg at lysator.liu.se> wrote in message 
news:m31x8gowh0.fsf at lysator.liu.se...

> "David Schwartz" <davids at webmaster.com> writes:

>>     No. But unless you have some specialized hardware, you're just 
>> kidding
>> yourself if you think you can get more than that. Even with a PPS input
>> accurate to 200nS and the PPS kernel patches, accuracy is still only 
>> about 3
>> microseconds.

> Did you reread  http://phk.freebsd.dk/soekris/pps/ lately?

    A rubidium frequency standard qualified as "specialized hardware" in my 


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