Daniel O'Connor wrote:
>
>
>> On 17 Jun 2022, at 12:52, Jim Pennino wrote:
>> Daniel O'Connor wrote:
>>>
>>>
>>>> On 17 Jun 2022, at 00:07, David Taylor
>>>> wrote:
>>>>
>>>> On 16/06/2022 10:00, Thiebaud
Daniel O'Connor wrote:
>
>
>> On 17 Jun 2022, at 00:07, David Taylor
>> wrote:
>>
>> On 16/06/2022 10:00, Thiebaud HUMBERT wrote:
>>> To do the inversion, I just changed the "Pulse Mode" parameter to "Falling
>>> edge" from "Rising edge".
>>> The offset induced by the "pulse length" has
chris wrote:
> On 06/16/22 16:20, Jim Pennino wrote:
>> Thibaut HUMBERT wrote:
>>> Le jeudi 16 juin 2022 à 16:37:33 UTC+2, David Taylor a écrit :
>>>> On 16/06/2022 10:00, Thiebaud HUMBERT wrote:
>>>>> To do the inversion, I just changed the "P
Thibaut HUMBERT wrote:
> Le jeudi 16 juin 2022 à 16:37:33 UTC+2, David Taylor a écrit :
>> On 16/06/2022 10:00, Thiebaud HUMBERT wrote:
>> > To do the inversion, I just changed the "Pulse Mode" parameter to "Falling
>> > edge" from "Rising edge".
>> > The offset induced by the "pulse length"
William Unruh wrote:
> On 2021-06-25, Jim Pennino wrote:
>> chris wrote:
>>> On 06/25/21 17:28, Jim Pennino wrote:
>>
> ...
>>
>> Actually what I plan to do is to put a $14 USB GPS on the machine that
>> already has a PPS GPS at
William Unruh wrote:
> On 2021-06-25, Jim Pennino wrote:A
>> Or for $14/machine I could use a USB GPS, my machine with PPS GPS, and A
>> public server that does NOT request use of DNS which yields 3 sources of
>> time without using a pool or DNS lookups.
>
&g
chris wrote:
> On 06/25/21 17:28, Jim Pennino wrote:
>> Or for $14/machine I could use a USB GPS, my machine with PPS GPS, and A
>> public server that does NOT request use of DNS which yields 3 sources of
>> time without using a pool or DNS lookups.
>>
>> Or
chris wrote:
> On 06/25/21 04:08, Jim Pennino wrote:
>> William Unruh wrote:
>>
>>
>>
>>> I suspect it is the number of times that ntpd tries to contact the
>>> server and fails rather than the time that is important. You could try
>>> p
William Unruh wrote:
> On 2021-06-25, Jim Pennino wrote:
>> chris wrote:
>>> On 06/25/21 04:08, Jim Pennino wrote:
>>>> William Unruh wrote:
>>>>
>>>>
>>>>
>>>>> I suspect it is the number of times that ntpd t
William Unruh wrote:
> I suspect it is the number of times that ntpd tries to contact the
> server and fails rather than the time that is important. You could try
> putting the server offline and then online again (I use chrony so do not
> remember if ntpd has that option).
No, it doesn't.
Jim Pennino wrote:
> I was checking the stability of a new USB GPS refclock on a server which
> is configured to use the GPS, servers from the ntp pool, and another server
> of mine that has a PPS GPS receiver.
>
> I noticed that almost all the pool servers had disappeared.
>
On Thu, Jun 24, 2021 at 10:04:32AM -0400, Danny Mayer wrote:
> On 6/23/21 10:26 AM, Jim Pennino wrote:
> > It seems that any server in ntp.conf that is specified as a name, as
> > the pool servers are, will after a sufficiently long DNS outage just
> > disappear and not come
William Unruh wrote:
> On 2021-06-23, Jim Pennino wrote:
>> William Unruh wrote:
>>> On 2021-06-23, Jim Pennino wrote:
>>> ...
>>>>
>>>> As for the USB GPS I was testing, it is called a VK-162 G-Mouse
>>>> available from Ama
William Unruh wrote:
> Certainly if it used the usb channel at its full speed, that should be
> fine. I always thought that gps ran at serial port speeds, but clearly
> that is not true.
Well, stty -F /dev/ACM0, which is where this puck shows up as opposed to
the generic /dev/USB0, says
William Unruh wrote:
> On 2021-06-23, Jim Pennino wrote:
> ...
>>
>> As for the USB GPS I was testing, it is called a VK-162 G-Mouse
>> available from Amazon for $14, uses the Windows 10 native driver so it
>> works with Meinberg ntp, and keeps the time withi
I was checking the stability of a new USB GPS refclock on a server which
is configured to use the GPS, servers from the ntp pool, and another server
of mine that has a PPS GPS receiver.
I noticed that almost all the pool servers had disappeared.
I then checked other machines that use my "good"
On Tue, Jan 26, 2021 at 11:06:41AM +, David Taylor wrote:
> On 25/01/2021 16:33, Jim Pennino wrote:
> []
> > But the PPS has a lot of jitter. Note the xPPS(0) in the ntpq line.
> >
> []> The default for NTP is 4800 baud, but I am running at 9600 and ther
On Mon, Jan 25, 2021 at 10:11:03AM -0800, Gary E. Miller wrote:
> Yo Jim!
>
> On Sun, 24 Jan 2021 18:06:12 -0800
> Jim Pennino wrote:
>
> > I got a Pi 4 and Adafruit ultimate gps hat to play with and decided
> > to see how good it was as a timekeeper.
>
On Mon, Jan 25, 2021 at 11:03:46AM +, David Taylor wrote:
> On 25/01/2021 02:06, Jim Pennino wrote:
> > I got a Pi 4 and Adafruit ultimate gps hat to play with and decided to see
> > how good it was as a timekeeper.
> >
> > First weird thing; xgps does not s
0.000 -0.728 1.356
Anyone got any suggestions other than to trash the Ulitmate hat and get
another GlobalSat USB?
--
Jim Pennino
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