> Can someone find a citation for best practice on parts-per-thousand?
> Wikipedia says ppt is used in some disciplines for this.
I've seen PPM and PPB in frequent use.
I don't remember seeing PPT or PPK. PPT I would probably figure out from the
context right away. PPK would take me a bit lo
Achim Gratz :
> Eric S. Raymond writes:
> > If we're not working towards a unified vocabulary, what's the point
> > of having a glossary at all?
>
> Please define the scope of that glossary. Your request seemed overly
> broad to me, maybe I'm just reading it wrong. In any case it's not
> clear
Yo Ian!
On Tue, 25 Apr 2017 13:06:14 -0500
Ian Bruene wrote:
> On 04/25/2017 12:08 PM, Achim Gratz wrote:
> > When talking about precise frequency measurements I would rather
> > expect ppt to refer to "parts per trillion".
>
> Useful note: the units display code shows parts-per-thousand as
>
On 04/25/2017 12:08 PM, Achim Gratz wrote:
When talking about precise frequency measurements I would rather expect
ppt to refer to "parts per trillion".
Useful note: the units display code shows parts-per-thousand as "ppk",
parts-per-kilo in order to avoid this collision.
--
In the end; wh
Eric S. Raymond writes:
> If we're not working towards a unified vocabulary, what's the point
> of having a glossary at all?
Please define the scope of that glossary. Your request seemed overly
broad to me, maybe I'm just reading it wrong. In any case it's not
clear for me what you actually wa
Achim Gratz :
> Gary E. Miller writes:
> > Glossary:
> >
> > frequency offset:
> > The difference between the ntpd calculated frequency and the local
> > system clock frequency (usually in parts per million, ppm)
>
> It's actually the current correction ntpd applies to the system clock
> (for
Achim Gratz :
> Eric S. Raymond writes:
> > Achim, you and Gary *both* get to write glossaries covering terms like
> > precision, accuracy, drift, and related stuff. Give it your best
> > shot(s). If, after a reasonable period of time, I have a glossary
> > only from one of you, tha person wins a
Gary E. Miller writes:
> Glossary:
>
> frequency offset:
> The difference between the ntpd calculated frequency and the local system
> clock frequency (usually in parts per million, ppm)
It's actually the current correction ntpd applies to the system clock
(for ppm, the correct unit would be
Eric S. Raymond writes:
> Achim, you and Gary *both* get to write glossaries covering terms like
> precision, accuracy, drift, and related stuff. Give it your best
> shot(s). If, after a reasonable period of time, I have a glossary
> only from one of you, tha person wins and the glossary gets ble
Yo Kurt!
On Mon, 24 Apr 2017 19:30:03 +0200
Kurt Roeckx wrote:
> On Mon, Apr 24, 2017 at 10:07:47AM -0700, Gary E. Miller wrote:
> > frequency offset:
> > The difference between the ntpd calculated frequency and the
> > local system clock frequency (usually in parts per million, ppm)
> > jit
On Mon, Apr 24, 2017 at 10:07:47AM -0700, Gary E. Miller wrote:
> frequency offset:
> The difference between the ntpd calculated frequency and the local system
> clock frequency (usually in parts per million, ppm)
> jitter, dispersion:
> The short term change in a value
For me jitter is a
Yo Kurt!
On Mon, 24 Apr 2017 18:49:39 +0200
Kurt Roeckx wrote:
> I think one of the problems is that such terms are used at many
> different places. And you might need to be more specific at which
> one you mean. That is, there might be variables called precision,
> but not all of them mean exac
On Mon, Apr 24, 2017 at 12:36:17PM -0400, Eric S. Raymond wrote:
> Having almost recovered from post-viral fatigue syndrome, I have
> enough energy to work now and am attempting to clear out my old
> project-related mail. I'd like to have my decks cleared for the
> face-to-face team meeting this c
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