[ntp:questions] how to have offset < 1ms

Terje Mathisen "terje.mathisen at tmsw.no" at ntp.org
Wed Apr 14 19:15:15 UTC 2010

John Hasler wrote:
> Richard B. Gilbert writes:
>> With a closed network the options are limited.  With a place to site a
>> GPS antenna, you can install a GPS clock that will be accurate to
>> within +/- 50 nanoseconds.
> It occurs to me that the sort of fancy GPS that an oceanographic ship is
> sure to have on the bridge may already be capable of providing time
> service.

The operative word here is _may_. Many (most ?) navigation GPS setups, 
even the fancy RTK models, couldn't care less about providing an 
external PPS signal.

- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"

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