On Wed, Aug 1, 2012 at 6:40 AM, Will Shackleford wrote:
>
>
> The rubidium units I see on E-bay look like they were designed to go in a
> CD player. Would I need
> additional hardware to connect it to a computer and software to read it as
> a clock source?
>
There are other Rb units on eBay.
Th
Given all the mention of NBS, someone should point out the the OP
appears to actually be working at the National Bureau of Standards,
which has been called NIST for... decades now. So the below-mentioned
clock-containing truck might not have to drive far. :)
--Jeff
On 8/2/2012 8:13 AM, Richa
On 7/31/2012 12:06 PM, unruh wrote:
One option is to install a gps receiver onto one or more of your
machines to deliver accurate time to them.
The second option is to look into "orphan" mode, which was designed for
your situation.
Your problem is probably that you are using more than one of th
Will Shackleford wrote:
Thanks,
I should have provided a number of additional details.
The lab is an interior lab on the ground floor of a 3 story building
with no windows.
The work is not classified but security rules do make things difficult.
GPS doesn't seem like an easy solution.
The
On 7/30/2012 11:47 AM, Will Shackleford wrote:
We have several computers with several different operating systems on a
local network with no radios and no internet connection.
The main goal is to keep them synchronized with each other.
One frustration I have had is that clients tend to refuse
Richard B. Gilbert wrote:
> There is a fairly simple and not terribly expensive solution.
>
> It's a GPS timing receiver! They were available for about $100 the last
> time I looked. Can you put an antenna smaller than a hocky-puck
> where it will have a "view" of the sky?
He already explained
I tried setting ophan mode.
on 192.168.0.5 I put
tos orphan 6
at the end of the ntp.conf file
on 192.168.0.4 I ran ntpdate to set the clock
I got this
[shackle@galactica-304 ~]$ sudo ntpdate -d 192.168.0.5
1 Aug 10:31:02 ntpdate[18776]: ntpdate 4.2.6p3-RC10@1.2239-o Thu Nov
25 16:18:33 U
Thanks,
I should have provided a number of additional details.
The lab is an interior lab on the ground floor of a 3 story building
with no windows.
The work is not classified but security rules do make things difficult.
GPS doesn't seem like an easy solution.
The computers log data from a
On 2012-08-01, Terje Mathisen <"terje.mathisen at tmsw.no"> wrote:
> David Taylor wrote:
>> I have information on my Web site on the easy-to-use Sure GPS, as well
>> as the low-cost Garmin GPS 18x LVC.
>>
>>http://www.satsignal.eu/ntp/Sure-GPS.htm
>>http://www.satsignal.eu/ntp/FreeBSD-GPS-P
On 2012-08-01, Chris Albertson wrote:
> On Tue, Jul 31, 2012 at 7:46 PM, Kennedy, Paul wrote:
>
>> Exactly so. you can purchase a GPS receiver for well under $100 connect
>> it to a serial port + pps on any of the pc's and have microsecond
>> accuracy in a few hours. This 'master' can then serve
On 01/08/2012 10:15, Terje Mathisen wrote:
[]
This summer I received two more SURE boards, it took about an hour total
to solder on the two required patch wires on each of them.
(I used David's pictures to remind me where to put the patch wires!)
Together with a pair of old laptops (with proper
David Taylor wrote:
I have information on my Web site on the easy-to-use Sure GPS, as well
as the low-cost Garmin GPS 18x LVC.
http://www.satsignal.eu/ntp/Sure-GPS.htm
http://www.satsignal.eu/ntp/FreeBSD-GPS-PPS.htm
Mine are using simple puck antennas, indoors, on the top floor of a
two-s
On Tue, Jul 31, 2012 at 7:46 PM, Kennedy, Paul wrote:
> Exactly so. you can purchase a GPS receiver for well under $100 connect
> it to a serial port + pps on any of the pc's and have microsecond
> accuracy in a few hours. This 'master' can then serve time to all other
> PC's. The systems will
unruh wrote:
> One option is to install a gps receiver onto one or more
> of your machines to deliver accurate time to them.
I'd be surprised if NIST didn't have enough refclocks to go around.
Will Shackleford might want to have a conversation with Judah Levine.
--
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From: questions-bounces+p.kennedy=fugro.com...@lists.ntp.org
[mailto:questions-bounces+p.kennedy=fugro.com...@lists.ntp.org] On
Behalf Of Charles Elliott
Sent: Wednesday, 1 August 2012 8:26 AM
To: 'Will Shackleford'; questions@lists.ntp.org
Subject: Re: NTP on local netw
l Shackleford'; questions@lists.ntp.org
Subject: Re: [ntp:questions] NTP on local networks
Unruh had the correct advice: Buy a (cheap) GPS device for a master
clock and propagate the correct time. If something is worth doing, it
is worth doing right. Become a force, develop a reputation, for
progr
Monday, July 30, 2012 11:47 AM
> To: questions@lists.ntp.org
> Subject: [ntp:questions] NTP on local networks
>
>
> We have several computers with several different operating systems on
> a local network with no radios and no internet connection.
> The main goal is to keep them sy
BlackLists wrote:
> Will Shackleford wrote:
>> We have several computers with several different
>> operating systems on a local network with no radios and
>> no internet connection.
>> The main goal is to keep them synchronized with each other.
>
> You should be able to do a time island with nt
Will Shackleford wrote:
> We have several computers with several different
> operating systems on a local network with no radios and
> no internet connection.
> The main goal is to keep them synchronized with each other.
You should be able to do a time island with ntp orpahn mode:
e.g. I use
One option is to install a gps receiver onto one or more of your
machines to deliver accurate time to them.
The second option is to look into "orphan" mode, which was designed for
your situation.
Your problem is probably that you are using more than one of th
emachines as the "server" and they h
Hi Will,
good questions. Before I offer an answer:
1. can you please provide samples of the ntp.conf files you have in
place. It would really assist.
2. can you please provide the version of ntpd you are using?
regards
pk
Questions:
How can I configure a client/peer to always accept a server
We have several computers with several different operating systems on a
local network with no radios and no internet connection.
The main goal is to keep them synchronized with each other.
One frustration I have had is that clients tend to refuse to connect to
servers on the network
that are
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