stability of the clock operated with the low-noise telecom laser is improved by
a factor of three compared to clock operation using the direct 780-nm laser.
© 2018 Optical Society of America under the terms of the OSA Open Access
Publishing Agreement
Henk Peek
On Tuesday, June 5, 2018 11:11 CEST
not have an conformed guided-tour, Cern has 2 permanent
exhibitions. They offer a very good alternative to get an idea on what CERN
looks like from the inside. They are accessible freely, no reservation needed.
At one of the exhibitions is an Cern goody shop.
Best regards, Henk PA0HZP
Hi,
The 207x is. Auto sensing for the mains.
Groet,
Henk
Op 9 sep. 2013 om 11:52 heeft Mark C. Stephens ma...@non-stop.com.au het
volgende geschreven:
After removing endless hex screws to get at the insides I find the 24V/2A PSU
that supplies the standby voltages has what appears
Hi,
Have sent pdf to Ed.
Henk
Op 27 aug. 2013, om 14:49 heeft Tom Van Baak t...@leapsecond.com het
volgende geschreven:
Hi Ed,
That link has been dead for all the years I've visited their site. Given the
format of other PDF file names in that directory the link may be a typo but
none
Hi Ed,
Nice story with nice pictures. Can you make full resolution pictures available
please. The 2070 and 2075 look the same, at least as far I could see. But your
picture show more of the inners than I saw when I opened mine.
Henk
Op 20 aug. 2013, om 20:51 heeft Mike Feher mfe
Hi,
A possible explanation is that they use the term high gain front end when
they assume a controlled noise bandwidth while for a comparator the assume an
un-controlled noise bandwidth. The comparator has of coarse also a noise
bandwidth that should be controlled by the designer.
Henk
Op
Hi,
The use of double shielded cables does raise the question to what type of
connectors to use?
Regards,
Henk
Op 3 mrt. 2013 om 17:30 heeft Jim Lux jim...@earthlink.net het volgende
geschreven:
On 3/3/13 8:00 AM, Kevin Rosenberg wrote:
On Mar 3, 2013, at 7:59 AM, John Ackermann j
Hi Said,
Look at Dieder's site.
Groet,
Henk
Op 20 nov. 2012 om 02:36 heeft saidj...@aol.com het volgende geschreven:
There is one calibration that can only be started by a GPIB command. I ran
into that, my unit constantly said something like xxx calibration
required or similar during
Hi,
The Wavecrest DTS 207X has a number of proms and also battery back-up
devices. I think it will be wise to check these first.
Or are you sure that it is hardware? How old is your DTS?
Henk
In the meantime I heard that Wavecrest is not distributing service
manuals. All repair
Hi,
That jitter value, was that one period jitter? Or was it jitter over a
large number of periods, thus close by the carrier?
Henk
MailLists wrote:
Ashihara's tests were with music/voice, taking into account
psychoacoustics, for an average group of music savvy listeners, and
even music
Hello,
How to use Prologix GPIB-USB controller with Mathematica on a Mac, that is the
question. Does the Prologix have a name so that I can write: Open[Prologix
GPIB-USB] ?
regards,
Henk
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in
frequency mode is low pass filtered before it is displayed. That make e.g. st
dev dependent on the time/div setting.
The fast histogram mode is another useful feature.
In all modes the picture can be averaged.
Indeed a nice instrument, I really like it.
Henk
The 53305A windows program is very
Hi,
Nice to read that there are PRS10 circuit diagrams on paper available. Did
somebody scan them?
If yes, can that scam made available to the list?
Henk
Op 17 feb 2011, om 22:55 heeft Laurence Motteram het volgende geschreven:
I would just like to point out that SRS is one of the few
Hi,
HP sels (sold?) refurbishes instruments also.
Henk
Op 17 feb 2011, om 22:28 heeft li...@lazygranch.com het volgende geschreven:
I've worked for Fortune 100 companies (let alone the top 500) and start-ups.
They both often buy used gear. Even if the gear breaks and needs repairs
Hi Fred,
A METHOD OF SERIAL DATA JITTER ANALYSIS USING ONE-SHOT TIME INTERVAL
MEASUREMENTS is in the white paper section of GigaMax 'tecnical resources'.
They split GigaMax from Wavecrest, probably after some bad financial times. The
Wavecrest white papers are now at GigaMax.
Henk
Op 9 feb
Hi,
Wavecrest uses algorithms for this and their software gives a spectrum. They
also give some info on their site.
Henk
Op 8 feb 2011, om 20:51 heeft detlef.amb...@gmx.de het volgende geschreven:
08.02.2011 08:17, Poul-Henning Kamp:
In message 224676.41616...@web120905.mail.ne1.yahoo.com
Op 22 jul 2010, om 16:37 heeft Stanley Reynolds het volgende geschreven:
Just tried to invoice the ones not paid yet but paypal doesn't allow enough
time
for me to complete the invoice and thinks it is OK to dump my work up to that
point, note to self sell ebay stock short and use money
and the internal multipole magnetized. Turning the
tube upside down will help down under if the tube was manufactured in
the northern hemisphere. Then tune the deflection yoke back or swap
line and frame connections.
Henk
Op 18 apr 2010, om 04:09 heeft Max Robinson het volgende geschreven
as possible. Therefor a well designed PFD will out perform a
EXOR. I allways designed for the shortest pulses. For the nmos current
source I used 100ps but the pmos dictated to go to 300ps.
Henk
Op 10 mrt 2010, om 19:36 heeft saidj...@aol.com het volgende geschreven:
Hi Ulrich,
I think
are
expensive and the hall sensor is easily damaged by a drop on the
floor. At least, that is my experience. If you want to by a current
probe and need a DC probe, take care that the hall sensor is not
damaged.
regards,
Henk
On Jan 4, 2010, at 10:35, David C. Partridge wrote:
You're buying magic all
Hi Bert,
This is amazing and i hope that you can make it available for us to build
one. I am very interested.
regards,
Henk
A couple of months ago I did announce that I plan to build a dual Mixer
based on the NBS design with minor updates and add a counter section. All
with
a cost goal
A better
explanationhttp://en.wikipedia.org/wiki/Glass#Glass_versus_a_supercooled_liquidcan
be found in the wiki
On Tue, Jun 16, 2009 at 4:34 PM, Chuck Harris cfhar...@erols.com wrote:
J. Forster wrote:
Interestingly, I recently had dinner with an archeology professor,
interested in the
Hello,
The Wavecrest DTS uses a large airflow to keep temperature differences
small enough for low tempco in the interpolators. This can also be the
case for the hp5370, thus be carefull.
henk
Hello Pierre-François
A point of personal interest in your email - - The noise of the fan
Hallo Folkert,
Ik zag C, gps en source dus misschien iets voor jou
On Mon, Jan 26, 2009 at 12:26 PM, Esa Heikkinen scifisc...@sci.fi wrote:
I found a link from message archives:
http://www.febo.com/pipermail/time-nuts/attachments/20081224/4a474e8d/attachment-0001.zip
--
73s!
Esa
OH4KJU
Sorry, I hit the wrong button,
Henk
On Mon, Jan 26, 2009 at 1:46 PM, Esa Heikkinen scifisc...@sci.fi wrote:
Hallo Folkert,
Ik zag C, gps en source dus misschien iets voor jou
Anteeksi mutta en ymmärrä kieltä... :-)
In english: Sorry, I do not understand that language.
--
73s!
Esa
for calibration in liquits or gas but you have to
insert it at least 20 cm.
Best regards,
Henk
On Sat, Jan 24, 2009 at 5:39 PM, John Ackermann N8UR j...@febo.com wrote:
The best I can get. This is time-nuts, after all. :-)
I'm certainly not looking for the full millidegree accuracy
http://www.mail-archive.com/time-nuts@febo.com/msg13666.html
On Sat, Jan 24, 2009 at 8:10 PM, Corby Dawson cdel...@juno.com wrote:
Looking for the pinout of the FTS 2000A oscillator.
I have a data sheet but no pinout.
It was removed from an FTS 4050 or 4060.
It has a db connector with 10
Hi,
An opto coupler seems good idea for an isolation amplifier but maybe
not for the phase noise.
Any experience?
regards,
henk
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?
regards,
Henk
On Oct 30, 2008, at 18:41, Grant Hodgson wrote:
Does anybody know how to use the signal source that comes with the
HP 53310A
Modulation Domain Analyser? The MDA is fine, but I don't have a
manual for
the signal source, and there seems to be nothing coming out
Hi,
In car radio capacitive antennas are used. The required LNA rejection
for the power line frequency is in the order of 100dB.
henk
On Aug 10, 2008, at 15:16, Alan Melia wrote:
Hi Didier, thanks for that idea, yes they were all pucks all
Garmin two
intended for marine use and one
and
accuracy, but between accuracy and resolution there is.
Henk
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are losing
bandwidth, if it is to short noise increases. Read the manual. The
reference is very clean. Also available is the HP53305 software via
gpib.
Henk
On May 4, 2008, at 21:16, Murray Greenman wrote:
Hi all,
We have a problem at work where one of our engineers needs to measure
the start
their first red leds
and claimed 5 hours mtbf.
Henk
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if there are no other functions in the
package. Thus requires sometimes re-clocking of the logic output with
a separate d-ff.
Henk
On Apr 28, 2008, at 17:12, Pete wrote:
Don,
One effect I have observed on uP clock generators is that
fully differential circuits which utilize the crossover
and shape. It is always more.
Henk
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On Jan 2, 2008, at 0:06, Bruce Griffiths wrote:
Henk
The circuit diagram helps a lot.
Thanks a lot for the comments on the schematic, they explain a lot.
I will create some circuit schematics for crystal oscillators that
control the crystal current more directly and use a common base
On Dec 30, 2007, at 19:03, Grant Hodgson wrote:
Henk
Two things will dominate if you want such a low phase noise spec.:-
the
loaded Q of the oscillator circuit, and the flicker corner frequency
of the sustaining amplifier transistor. To get a high loaded Q you
need
a crystal
On Jan 1, 2008, at 13:42, Mike Feher wrote:
Henk -
Did you try to measure the PN out of the oscillator directly
without the
buffer amp (U1)?
No, but I will do it. I have to find a way, the emitter follower is
not expected to drive 50 ohm.
Also, what is the voltage from V1? Is it also
] [mailto:time-nuts-
[EMAIL PROTECTED] On
Behalf Of Henk ten Pierick
Sent: Tuesday, January 01, 2008 8:03 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] xtal oscillator phase noise
On Jan 1, 2008, at 13:42, Mike Feher wrote:
Henk -
Did you try to measure
Hi Jon,
I have send what I have off-list.
Henk
On Nov 21, 2007, at 0:26, John Ackermann N8UR wrote:
The UPS man left my nifty new DTS-2070C analyzer today. The unit
looks
like it's new in box, but it's been robbed of the manual (and SMA
shorts
and extenders that are supposed
output frequencies up to 1KHz or so should
be feasible with high amplitude stability.
The stated 10Gigabits/s for a bit stream, is that a typo?
Henk
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); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
Bruce,
Great!
Henk
On Nov 8, 2007, at 22:11, Bruce Griffiths wrote:
Henk ten Pierick wrote:
On Nov 6, 2007, at 22:43, Bruce Griffiths wrote:
NIST's AC standard is currently useful for generating frequencies
up
modulation. I do not
know why.
Henk.
On Oct 9, 2007, at 19:33, Greg Burnett wrote:
It would have been nice if our group (with our impressive, collective
talent, logical, scientific and mathematic abilities) could have
brainstormed this topic with a positive outcome. Might we have hit
dB or better and a 1-bit signal can be discerned. Higher-end
consumer gear do use these as well as pro equipment.
Hi David,
Do you have information on the jitter spectra content. I think that
low to mid is the most important but I am not sure.
Henk
.
Henk
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with jitter in this range. And I do not
know what.
Offer is still valid.
Henk
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); SAEximRunCond expanded to false
Errors-To: [EMAIL PROTECTED] RETRY
On Aug 1, 2007, at 0:51, Dr Bruce Griffiths wrote:
Henk
There is no theory to show that sigma delta modulators of order higher
than 2 are actually unconditionally stable.
Yes, but with the Gerzon-Craven theory
to design for more bandwidth
than needed and so to relax the filter spec.
Henk
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not know the serial number. How is this with your 5372A?
Henk
On Jul 23, 2007, at 2:36, Magnus Danielson wrote:
As I don't have a wiring aisle for my lab-bench (beleive me, I
start to
consider it as a must have even if it would be a squeeze-in variant
of 3-4
dm or so, I could not get
Hello all,
Same question for the Vectron 224-8647-2 100MHz.
Henk ten Pierick
On Jun 19, 2007, at 12:43, Jeroen Bastemeijer wrote:
Dear All,
Can someone provide me with the pin-out of a Vectron 244-4799-2
oscillator? It has a SMA output and a DB-9 connector for power supply.
Other data
.
If realy a fet probe is needed, than use a lowpass filter with enough
bandwidth after the probe. Most of the time the majority of the
jitter is still seen and the large noise bandwidth of the probe is
attenuated.
Henk
On Jun 14, 2007, at 19:34, [EMAIL PROTECTED] wrote:
I have the 2G, 4G
also for the Amhurst software, it is required to have enough
samples on the edge. Often this is done with a lowpass.
For jitter measurements, noise bandwidth is awful and should be as
low as possible.
For a spectrum analyzer noise density is important, not noise bandwidth.
Henk
On Jun 14
with an amplitude of a few hundred ps. The behaviour is with
both internal and external reference. The hp53310 is the modulation
domain analyzer which forms the basis of the 53131/53132.
Henk
On May 30, 2007, at 21:43, [EMAIL PROTECTED] wrote:
In a message dated 5/30/2007 05:38:40 Pacific
On Apr 25, 2007, at 23:38, Dave Brown wrote:
Henk
Do any of the spurious signals show on the SA with a search antenna
(located in your lab environment)connected instead of the PRS10?
DaveB
No, they are not. I can see spurious if and only if the PRS10 is
powered. When I open the PRS10
.
Does anyone have schematics?
Henk
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and 10dB
change gave 10dB change of signal level. Also a mixer level change
had no influence on the spurious.
Henk
On Apr 25, 2007, at 22:07, Poul-Henning Kamp wrote:
I'm going to ask a seemingly stupid question, but bear with me:
Are you sure those signals are really present
or not. The spurious of
my PRS10 is 60dB down the 10MHz so it is strange that you see no
spurious.
Henk
attachment: PRS10withAndWithout100MHzLowpass.jpg
On Apr 24, 2007, at 20:18, [EMAIL PROTECTED] wrote:
In a message dated 4/23/2007 10:51:38 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Your
On Apr 22, 2007, at 23:47, [EMAIL PROTECTED] wrote:
Hi Henk,
great to hear that you got a Wavecrest DTS-2075!! That machine can
detect
spurs that phase noise measurements are oblivious too. Spurs cause
nasty
deterministic jitter of course.
That DTS2075 is at my employers lab
Vectron was out
of spec
(just shy of 100MHz at full mechanical deflection unfortunately).
Datecode 1994,
so not too bad.
So, if I need parts
Henk
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Hello,
The output spectrum of my just bought PRS10 has spurious frequencies
from 580MHz in steps of 10MHz up to 680MHz. The 580MHz and 680MHz
signals just above the noise. The 630MHz amplitude 60dB down the
10MHz. Does anyone know if this a normal output?
Henk
output?
Henk
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will filter the spurious out of coarse and re-measure
but are at least surprised to find this frequency spectrum.
I know that there are more PRS10 owners with the time-nuts, I expect
them to be phase-noise-nuts as well.
Henk
On Apr 22, 2007, at 20:47, John Ackermann N8UR wrote:
Henk, I don't know
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