Gentlemen,
here is a paper that I found by luck which gives a good overview about
picosecond resolution measurements:
http://ztc.wel.wat.edu.pl/kalisz/met4_1_004.pdf
Best regards
Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross Ippener
Nice stuff, Bernd!
I understand that you received some negative feedback on your ripple counter
divider circuit but a single resync flipflop on its outputs in front of the
AC04 drivers will do the job.
Best regards
Ulrich Bangert
-Ursprungliche Nachricht-
Von:
Hello Antonio,
Looking at the aerial photographs on Google Maps, the transmitter
building can be seen at 54.91224°N, 3.27831°W - nearer Cardurnock than
Anthorn! Which are the actual aerial masts though, I don't know.
Might I suggest you contact Peter Whibberley at the National Physical
note that at 54,9 degrees, one least significant decimal digit in the
latitude/longditude is approx 11cm/6cm . That might well explain why
there are multiple references.
Le 12/07/2010 11:46, Peter Vince a écrit :
Hello Antonio,
Looking at the aerial photographs on Google Maps, the
A word of caution here: Don't trust Google maps coordinates for any
technical / serious work, they can have errors in the 100´s meter
class. And also don't use the copyright date of the maps and images as
a time reference, they normally are older than that. If you live in an
area under
Hello Ulrich -
thank you very much for kind reply - this is a great suggestion. Would you
recommend simple 74xx74 flipflops driven by the original 10 MHz signal
delivered by the rubidium oscillator for resynching?
Thank you very much and have a great day - sincerely, Bernd. :-)
Hi
The original post simply mentioned EBU. Thus the confusion.
Bob
On Jul 11, 2010, at 8:23 AM, Ed, k1ggi k1...@comcast.net wrote:
Keep in mind, SMPTE/EBU is timecode, AES/EBU is digital audio.
3 orders of magnitude difference in the bit rates.
Chris was talking timecode.
Ed
Bernd,
On 07/12/2010 02:05 PM, ulm...@vaxman.de wrote:
Hello Ulrich -
thank you very much for kind reply - this is a great suggestion. Would you
recommend simple 74xx74 flipflops driven by the original 10 MHz signal
delivered by the rubidium oscillator for resynching?
That should do the
Bernd,
Would you recommend simple 74xx74 flipflops
driven by the original 10 MHz signal delivered by the
rubidium oscillator for resynching?
In principle, yes. However not directly clocked by the rubidium itself but
from a clean ttl signal that has been made out of the LPRO's sine. There
EB4APL wrote:
A word of caution here: Don't trust Google maps coordinates for any
technical / serious work, they can have errors in the 100´s meter
class. And also don't use the copyright date of the maps and images as
a time reference, they normally are older than that. If you live in an
Great question.
I noticed the same on my dead unit. That indeed may be why I had to readjust
the 3500 supply as I recall.
On Sun, Jul 11, 2010 at 11:32 PM, J. L. Trantham jlt...@att.net wrote:
Has anyone ever replaced a high voltage lead on an HP Cesium tube?
I have a 5061A that required
Looks like a good read.
Thanks
On Mon, Jul 12, 2010 at 2:39 AM, Ulrich Bangert df...@ulrich-bangert.dewrote:
Gentlemen,
here is a paper that I found by luck which gives a good overview about
picosecond resolution measurements:
http://ztc.wel.wat.edu.pl/kalisz/met4_1_004.pdf
Best regards
Dr Kalisz;
Greetings, since the timenuts have found you, it is only fair that you
should find them. There are (the true Nuts) on this reflector with better
standards in their basements than some of the major Time and Frequency
national labs.
Welcome aboard if you choose to take a
Following recent discussions on the availability of the 74AC175PC I made
some enquiries today and have located and purchased the total small stock of
NOS devices from a surplus IC dealer in the UK.
I'm expecting these to arrive sometime before the end of this week when I
will confirm that
On 07/12/2010 05:43 PM, paul swed wrote:
Looks like a good read.
It is a good read to get overview. When I saw it first most of it I had
gather through other exercises. but it should not prohibit others from
learn from it.
The digital interpolator in Figure 7 using delays is slightly
Hello Magnus, hello Ulrich -
thank you very much for your replies and your suggestions! I will dig
deeper into that issue (I begin to get fascinated about precise timing
- what a change for someone who once built amplifiers for measuring
signals with periods down to 1/100 Hz :-) ). It will take
Previous commentators have reported a shortage of this part, but a
quick Google brought up Quest Components in Industry, California, who
supposedly have over 2000 in stock (http://tinyurl.com/2wxk6lh). I've
not tried ordering from them as I'm on the other side of the Atlantic,
perhaps a member
I found them yesterday, and they show my order shipped today, let you know when
I receive it.
Stanley
- Original Message
From: Peter Vince pvi...@theiet.org
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Mon, July 12, 2010 2:30:14 PM
Subject:
Hi all,
did anybody out there observe any disturbances in his clocks during (and/or
before or after) the July 11 solar eclipse?
(due to other duties I've been prevented from doing any tests)
Thanks,
Antonio I8IOV
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time-nuts mailing list --
A order with BIGeSTOCK.com did not work out last week, I think some of these
people don't stock but re-list others stock. In this case they came back with a
price 5 times what they said when I ordered.
Stanley
- Original Message
From: Stanley Reynolds stanley_reyno...@yahoo.com
Hi All
As of 22:50 BST, 26 of the 32 available 74AC175PCs have been spoken for,
assuming all who've expressed an interest go ahead.
I'll update again later.
regards
Nigel
GM8PZR
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God willing and the creek don't rise, I should receive 50 of them within a few
days, so if you're a Stateside Timenut, this might be helpful to you. If
interested, please contact me off list with your zip code, and I'll provide a
cost estimate. Final confirmation after I've actually got them
First I would like to compliment the authors on this great program. I just
installed the program and using it on my Thunderbolt based GPSDO.
I Understand the display , however I cant seem to find the REF OSC ( first
graph parameter on the left ) which according to the legend is GRAY in color.
Never mind guys, looked more carefully in the help file and found the command
to toggle that graph. Guess its grayed out initially since its so busy.
Thanks
Hank
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Never mind guys, looked more carefully in the help file and found the command
to toggle that graph.
Guess its grayed out initially since its so busy.
Thanks
Hank
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I'm crossing my fingers that my order doesn't get revised by an
unscrupulous or overly-optimistic vendor, but assuming it gets filled,
as of 20:56PDT I have requests for all of the 50 chips I'm hoping to be
able to provide. If you requested one or two, I put you down for two.
Hopefully
df...@ulrich-bangert.de said:
While the ADCMP600 are available well in Germany (for example from FARNELL)
the MSOP enclosure is very tricky to solder and for a bit less in frequency
performance a LT1016 will do it for you too.
The ADCMP602 is the version that comes in the MSOP package.
The
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