> Looking to get good colour photos of some of these
> older HP counters (and similar offerings from other
> manufacturers) in the pre/early Nixie etc period.
Here's an opportunity to own an HP 522B for $25, including
shipping in the US. The unit has 5 decades of ten vertical
neon indicators each
> If there are any big problems with using the Cyrix CPU with FreeBSD, the CPU
> is socketted.
There's no problems with any modern Cyrix CPU. By modern, I mean
anything that's a 486 or better.
Warner
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I just came into posssession of an HP JetDirect 4000 Print Server (for
free). It is a rackmount box that is 2.5"H x 12.5"D. Inside is a small
motherboard, 5GB IDE drive and a power supply. On the front is an LCD
display and a membrane-type keypad (used for setting the IP and navigating
the menu). O
Hello James, Rob,
its a lot better than the M12+ predecessor I've had a chance to take a look
at it...
bye,
Said
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> A problem that shows up every now and then is that the standard
> deviation on a 500 second average is above 10 ns (typical is 9 ns). For
> example here is some data all this morning (17 May 06):
> Time Interval (ps) time sigma
> 975803 04:49:20 9
> 969817
> Looking to get good colour photos of some of these
> older HP counters (and similar offerings from other
> manufacturers) in the pre/early Nixie etc period.
Much of that kind of material is in Agilent's archive. I think the Agilent
research library (in Palo Alto, CA) might be of some help.
T
Hi...
I remember having seen an interesting analog
counter/frequency divider using charge pumps and
unijunction transistors in a watchmaker's mechanical
watch adjusting machine. ( i don't remember the
machine's name, but it is used to adjust the
oscillator's (balance wheel/hairspring) frequency.
At 04:06 PM 5/17/2006 -0500, Bill Hawkins wrote:
>
>The other source of error is the drift in your PC clock.
>NTP adjusts the clock frequency if you have an adjustable
>clock frequency, as is found in Unix derivatives. AFIK, a
>wintel clock frequency can't be adjusted. So the PC error
I think it c
Joseph Gray wrote:
"I knew SNTP was not as good as NPT, but I would have thought that SNTP kept
the clock accurate to at least the nearest second. Obviously not. So, what's
the worst that a typical PC clock would be off when using SNTP?"
Truly, the answer is, "It depends."
SNTP is designed to tra
> The fundamental difference between SNTP and NPT is that SNTP does only a
> period check and adjustment, so the clock can drift significantly
> between polls. NTP on the other hand attempts to continuously steer the
> clock, and uses a much more sophisticated algorithm to determine the
offset.
>
Hi:
The prior data was logged while I was not at the computer. But while
writing the last email there was another high sigma data point:
978618 11:12:40 45
TAC32 is reporting that the M12+T is tracking 8 SV #s:
22 15 14 3 18 21 7 and 19
yet there's a bad data point.
Have Fun,
Hi:
I've been comparing s/n 1227 aginst GPS for a couple of weeks and am
within a tick or two of getting the c field optimized. I think the
current actual offset is less than +2.2E-13, but R^2 is only at 0.2 so
am not really sure yet.
A problem that shows up every now and then is that the stan
Good suggestion Dave.
It would be nice just to see some of that gear again!
Of course, you need a darned good air conditioner if you are going to
use any of it.
John
At 05:31 PM 5/16/2006, you wrote:
>Looking to get good colour photos of some of these older HP counters
>(and similar offerings
>
>No, I have a HP 521C which comes with the HP 521A-59B crystal
>oscillator plugin
>module, but the HP 521A has it as an option. The HP 521C also have an
>additional counting row and an additional step in the timebase.
>Actually, you can supply it with an external time base of any of the
>freque
From: John Ackermann N8UR <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] Windows XP time
Date: Wed, 17 May 2006 07:02:35 -0400
Message-ID: <[EMAIL PROTECTED]>
> Joseph Gray wrote:
> > I just switched from using the built-in SNTP client for Windows XP to the
> > Windows binary of NTP that I got here:
Joseph Gray wrote:
> I just switched from using the built-in SNTP client for Windows XP to the
> Windows binary of NTP that I got here:
> http://www.meinberg.de/english/sw/ntp.htm
>
> In both instances, I was using the us.pool.ntp.org servers. It seems that
> the Windows XP implementation leaves s
Dear Rob,
the NavSync has a timing accuracy of 30 ns rms, while the M12M 10ns rms,
or even 2ns when using the clock granularity message..
That why I thought it is interesting..
73s Achim, DH2VA
> > Don't know about this one, but you might be interested in the
following.
> >
> > http://www.timing
Don't know about this one, but you might be interested in the following.
http://www.timing-consultants.com/images/NavSync/Nav-CW12-TIM.pdf
Rob K
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of James R Miller
Sent: 17 May 2006 08:33
To: time-nuts@febo.
I would sooner trust my good friends at Meinberg than Microsoft. They have
been in the timing business for 25+ years now, and are VERY well respected,
and have a large customer base.
Using two of their LanTime/GPS NTP Time servers here.
Rob K
-Original Message-
From: [EMAIL PROTECTED]
I just switched from using the built-in SNTP client for Windows XP to the
Windows binary of NTP that I got here:
http://www.meinberg.de/english/sw/ntp.htm
In both instances, I was using the us.pool.ntp.org servers. It seems that
the Windows XP implementation leaves something to be desired. The new
Folks,
Strolling with Steve Bible and Achim Volhardt I stumbled across this:
http://www.synergy-gps.com/images/stories/pdf/m12m%20timing%20prelim%20v11.pdf
Is it still under the radar? Or has it been evaluated?
--
==
James R Miller
Cambridge, England
==
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