. It said that the preferred clock was LOCL 127.127.1.1. I don't
>>> know what the heck happened, but these anomalies are getting really old.
>>> Hopefully the Sure board will do better. Oh, by the way, I shut down NTPD
>>> and the clock kept advancing the
x27;ve removed LOCL from the config
>>> file. Here are some links to some log and conf files if anyone is
>>> interested. Note the dates at the end. I've got 1200 log files in
>>> between these start and end dates.
>>>
>>> http://dl.dropbox.com/u/9879631/ntp.conf
these start and end dates.
http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120320%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120
1200 log files in between these start and end dates.
http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120320%20psycho%20clock
http://dl.drop
I've got 1200 log files in
> between these start and end dates.
>
> http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
>
> http://dl.dropbox.com/u/9879631/loopstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
> http://dl.dropbox.com/u/9879631/loopstats.
;t
>>> know what the heck happened, but these anomalies are getting really old.
>>> Hopefully the Sure board will do better. Oh, by the way, I shut down
>>> NTPD
>>> and the clock kept advancing the same way. 2 reboots appear to have
>>> fixed
>
ed. Note the dates at the end.
I've got 1200 log files in between these start and end dates.
http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
http://dl.dropbox.com/u/9879631/lo
Ron Frazier (NTP) wrote:
> the clock said Aug 2014
> the clock was advancing at a rate of about 2 HR per actual second.
> appeared to be updating about twice per second rather than once
> ever 10 seconds. It said that the preferred clock was LOCL
Remove LOCL.
I thought others had mentioned it mig
oved LOCL from the config file. Here are some links to some
> log and conf files if anyone is interested. Note the dates at the end.
> I've got 1200 log files in between these start and end dates.
>
> http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
>
> h
e dates at the end. I've got 1200 log files in
between these start and end dates.
http://dl.dropbox.com/u/9879631/ntp.conf%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20120319-2-above-priority-gpgga96-poll-3-6%20psycho%20clock
http://dl.dropbox.com/u/9879631/loopstats.20
On 2012-03-19, Chris Albertson wrote:
> On Mon, Mar 19, 2012 at 10:25 AM, Alby VA wrote:
>
>> On Mar 19, 12:12 pm, unruh wrote:
>>
>> > The actual PPS signal at the PPS pin has a rise time of about 10ns, and
>> > the Sure has a normal sawtooth timing signal, so that would indicate a
>> > few 10s
On 2012-03-19, Dennis Ferguson wrote:
>
> On 19 Mar, 2012, at 13:58 , Alby VA wrote:
>> Compared to this history of Atomic Clocks at NIST
>> and this chart of accuracy, I'd say my NTP Server is
>> in the 50yrs behind the curve. lol At least its portable.
>>
>> History: http://www.nist.gov/pml/
Terje Mathisen <"terje.mathisen at tmsw.no"> wrote:
> unruh wrote:
> > And it sounds like you have assymetric delays. Note that most ISPs
> > deliver very different rates for up vs down, and that may well
> > come with assymetric delays. (eg 600Kb/s, vs 30Mb/s for my cable
> > access)
> Ouch!
>
> >>> 64 bytes from 87.186.242.38: icmp_seq=1 ttl=254 time=48.3 ms
> >> 64 bytes from 87.186.242.38: icmp_seq=1 ttl=245 time=34.7 ms
> > Reply from 87.186.242.38: bytes=32 time=43ms TTL=239
I like the different TTL values, showing how many hops there are
between .38 and the folks pinging it. Ba
On 19 Mar, 2012, at 13:58 , Alby VA wrote:
> Compared to this history of Atomic Clocks at NIST
> and this chart of accuracy, I'd say my NTP Server is
> in the 50yrs behind the curve. lol At least its portable.
>
> History: http://www.nist.gov/pml/div688/grp40/nist-clocks.cfm
> Chart: http://up
By theat chart, my Trimble GPS is abot a 1960 level standard. But GPSes
are not portable, not if you need that level of accuracy. High end GPSes
need a fixed antenna, a survey and a few hours or days to reach the 1E-14
level. But they can with effort be as good as a Cesium clock
If you need "
Compared to this history of Atomic Clocks at NIST
and this chart of accuracy, I'd say my NTP Server is
in the 50yrs behind the curve. lol At least its portable.
History: http://www.nist.gov/pml/div688/grp40/nist-clocks.cfm
Chart: http://upload.wikimedia.org/wikipedia/commons/9/9a/Clock_accur
On Mon, Mar 19, 2012 at 10:25 AM, Alby VA wrote:
> On Mar 19, 12:12 pm, unruh wrote:
>
> > The actual PPS signal at the PPS pin has a rise time of about 10ns, and
> > the Sure has a normal sawtooth timing signal, so that would indicate a
> > few 10s of ns accuracy from the Sure, but the conversi
On Mar 19, 12:12 pm, unruh wrote:
> As per my comment. The interrupt processing/clock reading time on a PC is of
> the order
> of 1us.
> Note that on the Sure, the process of converting to an RS232 signal
> means that the PPS signal is of the order of 1us accuracy ( the signal
> processors are n
On 2012-03-19, Alby VA wrote:
> On Mar 19, 2:45?am, unruh wrote:
>> On 2012-03-19, David J Taylor wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> >> Hi all,
>>
>> >> I was doing some GPS research and found this site with lots of GPS's and
>> >> accessories. ?Just thought I'd pass it along.
>>
>> >>http://w
On Mar 19, 2:45 am, unruh wrote:
> On 2012-03-19, David J Taylor wrote:
>
>
>
>
>
>
>
>
>
> >> Hi all,
>
> >> I was doing some GPS research and found this site with lots of GPS's and
> >> accessories. Just thought I'd pass it along.
>
> >>http://www.gpssensors.com/
>
> >> I don't know which ones
On 2012-03-19, David J Taylor wrote:
>> Hi all,
>>
>> I was doing some GPS research and found this site with lots of GPS's and
>> accessories. Just thought I'd pass it along.
>>
>> http://www.gpssensors.com/
>>
>> I don't know which ones are timing GPS's.
>>
>> Sincerely,
>>
>> Ron
>
> Ron,
>
>
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