Gentlemen,
I know it's easy to make ADEV/MDEV plots using Plotter or
Timelab but that doesn't mean it's appropriate in every case.
When your data has an accidental data glitch or an
intentional transient, it's best not to use statistics to
describe that one event.
Correct! I would like
Hello, hope you all had a happy Christmas.
Back to the topic.
Bob Camp asked:
Hi
One very simple question - how good would it do if you just did it all
with logic gates? Tri-state buffers and things like that….
Now that you are up to a 100 to 200 ns long pulse, a lot of the fiddly
stuff about
Michael,
Which version of Meinberg's NTP build did you install? I've had problems
with high jitter content on one of them.
Rob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Michael Tharp
Sent: 25 December 2012 20:44
To:
From: Michael Tharp
[]
Oh, and your Windows box 172.24.0.68 is either poorly configured or
broken - they can work much, much better than yours illustrates as I
expect you know.
Yes, it's not healthy. I installed Meinberg's NTP build and configured
it using defaults other than the server list
You don't mention the quality of your VCXO. Do you have a part # or else specs
i.e. ppm vs temp, time, voltage, etc.
Nice pic btw. And that looks like an OSH Park gold plated board. I love their
service.
Simon
===
Message: 1
Date: Tue, 25 Dec 2012 12:18:30 -0500
Hi
You should check out the leakage of a typical tristate buffer. It's specified
at a level that makes it easy to test. Most of the parts you find have very low
leakage. Varicap diodes are similar in that respect, the leakage of real parts
is much lower than the 1 ua you see on the old specs.
Over Christmas, I was chatting with a high accuracy clock researcher in
the UK and he mentioned a trip to Brighton on the Winter Solstice and saw
notices for this:
Burning the Clocks Festival.
http://en.wikipedia.org/wiki/Burning_the_Clocks
LoL.
-John
The VXCO quality hardly matters for an NTP server. As long as it
does not gain out loose more then 1 uSecond per second. In other
words one part per million is fine for NTP. The goal is not to
produce a 10MHz GDPDO. Clients using this server over the Ethernet
are happy to keep time ti 1
Tom, Magnus, Ulrich:
Thanks for the comments and suggestions. They are appreciated and I now have
an even better understanding of why ADEV measurements are not a good tool for
characterizing the performance of oscillators that are subject to transient
events or glitches.
Just to clarify
Hi:
Here's one of my GPS controlled clocks that also displays random four letter
words.
http://www.prc68.com/I/timefreq.shtml#FLW
When people visit it's almost hypnotic.
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Fabio Eboli wrote:
Hello, hope you all had a happy Christmas.
Back to the topic.
Bob Camp asked:
Hi
One very simple question - how good would it do if you just did it
all with logic gates? Tri-state buffers and things like that….
Now that you are up to a 100 to 200 ns long pulse, a lot of the
Mark,
On 12/26/2012 06:24 PM, Mark Spencer wrote:
Tom, Magnus, Ulrich:
Thanks for the comments and suggestions. They are appreciated and I
now have an even better understanding of why ADEV measurements are
not a good tool for characterizing the performance of oscillators that
are subject to
On 12/26/2012 12:01 PM, Chris Albertson wrote:
The VXCO quality hardly matters for an NTP server. As long as it
does not gain out loose more then 1 uSecond per second. In other
words one part per million is fine for NTP. The goal is not to
produce a 10MHz GDPDO. Clients using this server
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