[time-nuts] Linux PPS clues?

Fri Oct 21 18:35:20 UTC 2016

Yo Chris!

On Thu, 20 Oct 2016 23:31:46 -0700
Chris Albertson <albertson.chris at gmail.com> wrote:

> You should expect the system time to have error on the order of about
> 10 microseconds

Check out the graaphs I sent earlier.  On a RasPi I can get oue
standard deviation under 1 µs.

> The PPS signal error comping out of events low cost GPS receiver has
> error oon order of say a few tens of nano seconds, that is 100 to
> 1000 times less error

Depends on the vendor.  Many only specify one standard deviation of
1 µs.  And you should alway treat spec sheet numbers as besst case.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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