[time-nuts] 1PPS users?

Chris Albertson albertson.chris at gmail.com
Sun Dec 18 20:35:50 EST 2016

Who uses 1PPS?  In industry they are used to phase lock various
oscillators.   I would bet most of those oscillators are used in the
telecommunications industry both for bit rate clocks and for carrier
frequency synthesis.

We also see a lot of 1 PPS used for NTP servers that in turn are used to
keep computer internal time of day clocks running at the correct rate.

On Sun, Dec 18, 2016 at 3:16 PM, Bob Stewart <bob at evoria.net> wrote:

> One thing I've never really understood is who actually uses the
> high-quality 1PPS output from a GPSDO.  I have spent a lot of time, effort,
> and money on developing my GPSDO without a whole of thought to the user
> base.  It was just a quest for the best result I could obtain with a
> particular technology.  The frequency standard users was a no brainer.
> Everyone who wants a frequency standard eventually understands they need to
> get a GPSDO, or an Rb, or a Cs.  And that's all I thought I had: a good
> frequency standard.  And then Tom prodded me a bit and showed me the
> shortcomings of what I was doing, and I did something about it.  So, if an
> NTP user can get his time fix directly from a noisy receiver, who actually
> needs a time-accurate, low jitter 1PPS pulse?
> Bob - AE6RV
>  -----------------------------------------------------------------
> AE6RV.com
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Chris Albertson
Redondo Beach, California

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