[time-nuts] 1 pps correction

[Azelio Boriani]

You can use a digital delay line to correct in hardware the PPS. The method
is illustrated in the usual .PDF I always recommend:
www.gpstime.com/files/tow-time2001.pdf


On Sat, Mar 31, 2012 at 3:26 PM, Martyn Smith <martyn at ptsyst.com> wrote:

> Hello,
>
> I’m a bit new to GPS receivers.  I’m reading all about sawtooth correction
> of the 1 pps output signal, on the ilotus M12M or M12+.
>
> I understand that correction can either be hardware controlled or software
> controlled.
>
> Does anyone make a low cost stand alone board to carry out this correction?
>
> I.E something that takes the raw 1 pps and serial data from the GPS
> receiver and produces a cleaner 1 pps output?
>
> I’ve seen that the peak to peak jitter is reduced from something like 27
> ns to < 10 ns.
>
> Is this a reduction of just the jitter, or is the actual accuracy to UTC
> also improved by this amount.
>
> Regards
>
> Steve Jones
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