Re: [time-nuts] Z3815A - what? -who? -where?

2007-05-07 Thread Didier Juges
Murray Greenman wrote: > T&Fers, > > Further to Kit's post a week or two back, we've started to make some > ground regarding understanding and using these excellent little GPSDO > units. I have working DOS software, and they also work OK with SATSTAT. > I have also sussed the GPS module comms and w

Re: [time-nuts] Z3815A - what? -who? -where?

2007-05-07 Thread Didier Juges
This connector looks like a VME backplane connector. They cost a fortune. Didier KO4BB Bill Hawkins wrote: > The pictures show why the 3815 never became popular. > > Matching that monstrous connector would be a problem. > The project is impractical without the matching card > file. > > And what i

Re: [time-nuts] NTP Synchronised Nixie Tube Clock

2007-05-08 Thread Didier Juges
Well, mine is not NTP or GPS controlled (unless the PC is), but it has a lot of bells and whistles :-) http://www.ko4bb.com/ham_radio/Clock (free download, no charge even for the bugs, er... unexpected features) Didier KO4BB Bill Hawkins wrote: > Well, I've been using the virtual Nixie clock

Re: [time-nuts] NTP Synchronised Nixie Tube Clock

2007-05-08 Thread Didier Juges
looks fine (the page was updated earlier today) I use Firefox under XP Pro, I have not tried others. Didier KO4BB Mike S wrote: > I find it humorous, that at the bottom of that page it says: "Last > Updated: January 1, 1970 GMT" > > At 06:49 PM 5/8/2007, Didier Juges wro

Re: [time-nuts] NTP Synchronised Nixie Tube Clock

2007-05-08 Thread Didier Juges
wrote: > At 07:22 PM 5/8/2007, Didier Juges wrote... > >> The page uses Javascript to instruct the browser to fetch the document >> >> updated time stamp. It seems like your browser does not handle >> Javascript the way it's intended. The way it's supposed to

Re: [time-nuts] PTS310 Manual

2007-05-13 Thread Didier Juges
Hi Nigel, Welcome to the list. You are welcome to upload your manual to my Manual web page: http://www.ko4bb.com/ham_radio/Manuals Instructions are at the top. Thanks Didier KO4BB [EMAIL PROTECTED] wrote: > Hi Ulrich and All > > I joined the list today, found it whilst looking for info on som

Re: [time-nuts] PTS310 Manual

2007-05-14 Thread Didier Juges
Hi Nigel, I have a few Teknet manuals already on my web site, particularly a couple of service manuals from before they decided they were not going to offer those for download. I also checked their conditions and I did not see any obvious indication they would mind. Considering they can chang

[time-nuts] Z3801A with other GPS receiver

2007-05-18 Thread Didier Juges
Here are a few questions about reusing a Z3801A main board. Would the Z3801A work with another GPS receiver? In other words, does the board talk to the GPS engine via the serial port, other than receiving the 1 PPS? If it does talk to the GPS receiver, which GPS receiver other than the original

Re: [time-nuts] Z3801A with other GPS receiver

2007-05-18 Thread Didier Juges
That would be fine if I were dealing with a Z3801, but at the moment, I am looking at that Z3801 main board someone has been trying to sell on eBay for the best part of a year and I was wondering if something could be done with it. It has no GPS and no OCXO. I have a spare 10811 and lots of GPS

Re: [time-nuts] Z3801A with other GPS receiver

2007-05-18 Thread Didier Juges
Dr Bruce Griffiths wrote: > Didier > > It would probably be more productive/profitable to develop one of the > inexpensive high resolution GPS disciplining techniques recently discussed. > performance is likely to be better and could be used to discipline most > commonly available OCXOs using any

[time-nuts] New Trimble timing products

2007-05-21 Thread Didier Juges
I asked and got a quote for small quantities of the Resolution-T GPS receiver (specified at 15nS rms from UTC) and the Mini-T GPSDO from the local Trimble rep. In qty 1-9, the Resolution-T GPS receiver (bare board) is $75, and the Mini-T (which is a complete embedded GPSDO on a PWB) is $945. U

Re: [time-nuts] New Trimble timing products

2007-05-21 Thread Didier Juges
Sorry, it's not 15nS rms, it's 15nS at 1 sigma. Didier KO4BB Didier Juges wrote: > I asked and got a quote for small quantities of the Resolution-T GPS > receiver (specified at 15nS rms from UTC) and the Mini-T GPSDO from the > local Trimble rep. > > In qty 1-9, the

Re: [time-nuts] New Trimble timing products

2007-05-21 Thread Didier Juges
Dr Bruce Griffiths wrote: > Didier Juges wrote: > >> Sorry, it's not 15nS rms, it's 15nS at 1 sigma. >> >> Didier KO4BB >> >> > Didier > > Surely the standard deviation (1 sigma) and the rms values are identical? > Specifying 1

Re: [time-nuts] New Trimble timing products

2007-05-21 Thread Didier Juges
Tom Van Baak wrote: >> I asked and got a quote for small quantities of the Resolution-T GPS >> receiver (specified at 15nS rms from UTC) and the Mini-T GPSDO from the >> local Trimble rep. >> >> In qty 1-9, the Resolution-T GPS receiver (bare board) is $75, and the >> Mini-T (which is a complete

Re: [time-nuts] 15 ns vs. 15 nS

2007-05-22 Thread Didier Juges
Kelvin and Ampere were people's names Didier John Day wrote: > At 04:05 AM 5/22/2007, Rob Kimberley wrote: > >> As Seconds are a fundamental unit of the SI system, shouldn't the "S" be >> upper case? >> > > Of seven SI 'base units' only two - K for thermodynamic temperature > and A for e

Re: [time-nuts] 15 ns vs. 15 nS

2007-05-22 Thread Didier Juges
If I recall correctly, unit names based on proper names get an upper case (like Siemens, Joules, Curie and others), others don't get any respect (gram, calorie, meter and such) So it would be correct that nS would be nano Siemens and ns would be nano second. Having been on the western side of

Re: [time-nuts] 15 ns vs. 15 nS

2007-05-22 Thread Didier Juges
John Day wrote: > At 09:26 AM 5/22/2007, Didier Juges wrote: > >> Having been on the western side of the pond for too long (people here >> could not care less about SI units, they drive on parkways and park on >> driveways anyhow), I got bad habits, sorry... >&

Re: [time-nuts] 15 ns vs. 15 nS

2007-05-22 Thread Didier Juges
John Day wrote: > Funniest thing is I have a very good friend, a librarian in Paris, > who comes to Canada regularly. He prefers to converse in English with > Francophone Canadians because he says it is easier to understand than > the 18th century, rural France, based accent of the French spoken

Re: [time-nuts] FMT

2007-05-26 Thread Didier Juges
Well, I was too late sending my results, but I did manage to listen to the signals this past Wednesday. I did not have time to prepare anything but listening by ear on the FT-1000 and using the HP-3586A as a beat generator (free running off it's internal Ovenair precision OCXO), I managed to ge

Re: [time-nuts] FMT

2007-05-27 Thread Didier Juges
onnie K5CM -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Didier Juges Sent: Saturday, May 26, 2007 8:11 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] FMT Well, I was too late sending my results, but I did manage to listen to t

Re: [time-nuts] Pendulums & Atomic Clocks & Gravity

2007-05-27 Thread Didier Juges
For the same reason that a satellite in free fall is still subject to gravitational forces, so do objects in Lagrange points. These points represent areas where the centrifugal forces compensate for gravity from two objects instead of one for a regular satellite. The only way to be free from gr

Re: [time-nuts] The first "time nut"?

2007-05-27 Thread Didier Juges
Tom, So it would seem you have been afflicted for a long time :-) At such an advanced stage, is there any hope for a cure? In this case, wouldn't a cure be a terrible thing? Didier KO4BB Tom Van Baak wrote: >> I know that at least one of us (not me!) was photographed in his younger >> days we

Re: [time-nuts] Pendulums & Atomic Clocks & Gravity

2007-05-27 Thread Didier Juges
e does??? > > 73 Ulrich, DF6JB > > >> -Ursprüngliche Nachricht- >> Von: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] Im Auftrag von Didier Juges >> Gesendet: Sonntag, 27. Mai 2007 16:54 >> An: Discussion of precise time and frequency measuremen

[time-nuts] FW: Pendulums & Atomic Clocks & Gravity

2007-05-28 Thread Didier Juges
, it would be the force exerted by the rotating arm), the centrifugal force is due to mass, radius and speed. 73, Didier KO4BB -Original Message- From: Ulrich Bangert [mailto:[EMAIL PROTECTED] Sent: Monday, May 28, 2007 5:03 AM To: 'Didier Juges' Subject: AW: [time-nuts] Pendulum

Re: [time-nuts] FW: Pendulums & Atomic Clocks & Gravity

2007-05-28 Thread Didier Juges
Ulrich, Your comparison with the linear motion is not valid. While you push the body, it accelerates. The energy spent giving the body increased speed (due to the excess force applied to the body while there is no counter force) is stored in kinetic energy. Once you stop pushing, the body moves st

Re: [time-nuts] FW: Pendulums & Atomic Clocks & Gravity

2007-05-28 Thread Didier Juges
Ulrich Bangert wrote: > Didier, > > >> Since you know a lot more about this than I do, I will accept >> your statement that centrifugal forces (or more generally >> inertial forces) are fictitious, but only because you insist. >> As long as I can predict their effect and calculate their >>

Re: [time-nuts] FW: Pendulums & Atomic Clocks & Gravity

2007-05-29 Thread Didier Juges
Bruce, A lot of the statements that have been made lately on this subject kind of make sense to me in a way taken in isolation, but they do not all agree with each other, and that makes me uncomfortable. Example: I do not understand why the frame of reference would matter when you talk about

Re: [time-nuts] FW: Pendulums & Atomic Clocks & Gravity

2007-05-29 Thread Didier Juges
James, Where were you all week-end? Your explanations are so clear, it makes sense now. Thank you very much. I understand now that centrifugal forces are necessary to explain the behavior of objects when an accelerating frame of reference is used, but not necessary (actually counter-productive

Re: [time-nuts] FW: Pendulums & Atomic Clocks & Gravity

2007-05-30 Thread Didier Juges
u have found out after all? 73s and my best regards Ulrich, DF6JB > -Ursprüngliche Nachricht- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im Auftrag von Didier Juges > Gesendet: Mittwoch, 30. Mai 2007 02:35 > An: Discussion of precise time and frequency measurement

Re: [time-nuts] OT: Not pendulums or atomic clocks or gravity

2007-05-30 Thread Didier Juges
I think that in addition to straight compression, some of the kinetic energy of the club is converted to shear potential energy in the ball (because of the angle of the club, and the fact that the club hits the ball below it's CG) and the shear potential energy is released as a torque, which is

Re: [time-nuts] Z3801A Antenna

2007-06-02 Thread Didier Juges
Bill, Trimble sells the Bullet antenna that is designed for their timing receivers. I have one and it works fine. I believe it is the same grade as the HP/Symmetricom antenna (filtered/amplified). You may be able to find one on eBay. Didier KO4BB Bill Janssen said the following on 06/02/2007

Re: [time-nuts] another Ebay mixup

2007-06-08 Thread Didier Juges
Well, his listing includes the serial number. He would not use the same listing without at least updating the S/N? Didier Jason Rabel wrote: > I wouldn't worry too much yet, the guy seems like a pretty good seller with > only 1 negative feedback from long ago. > > He is probably just too lazy t

Re: [time-nuts] another Ebay mixup

2007-06-09 Thread Didier Juges
Hi Said, Good! But upsetting when sellers do not do their due diligence to properly pack and therefore damage equipment that would have been just fine. I was very upset, and at the end very lucky when I bought my 8657B, which was shipped bare in a large box with what must have been not more th

Re: [time-nuts] A Prologix GPIB-USB hint

2007-06-09 Thread Didier Juges
Poul, This has been fixed in the most recent release. Abdul added a ++read command that gets a single reading and then turns TALK off the instrument. I have not actually tried it, but I have received it from Abdul a week or 2 ago. The firmware isd easy to upgrade. Give him a call. Didier ---

Re: [time-nuts] another Ebay mixup, 5370

2007-06-09 Thread Didier Juges
One of my 5370A's had a severely distorted sine out, which Bruce helped me trace to a bad solder joint on one of the cap that is part of the output filter. After reflowing the solder joint, it all came to life with a pretty good sinewave output. Some of the caps on the amplifier board look differe

Re: [time-nuts] another Ebay mixup, 5370

2007-06-09 Thread Didier Juges
Said, You sent pictures of the Fury's waveform, only the spectrum of the 5370. I did not look at the spectrum at the time, bu the waveform on the scope was low in amplitude and looked like 30 MHz with some 10 MHz component. It turns out a cap in the output filter was not making contact, and the

Re: [time-nuts] another Ebay mixup

2007-06-09 Thread Didier Juges
I have had two really bad packing jobs come to me, with serious damage, and in both cases, the vendor made it right. A DC-503 counter and TM-501 mainframe came with the front panel busted (but still working) and the seller gave me full credit. In another case (not quite as much damage on an HP

Re: [time-nuts] another Ebay mixup, 5370

2007-06-10 Thread Didier Juges
Hi Said, Before fixing the bad cap, the waveform was totally different (essentially a 30 MHz signal), after fixing it, the waveform looked closer to yours. I have attached a link to a picture showing the HP8657B at the top as a reference, and the current state (after fixing the cap) 10 MHz out

Re: [time-nuts] another Ebay mixup, 5370

2007-06-10 Thread Didier Juges
Dr Bruce Griffiths wrote: > I have a copy of a letter from David Chu detailing the then known > sources of differential nonlinearity in the 5370A. > These causes are principally crosstalk between the START and STOP > channels, and interaction between the mixers and the phase locked > oscillators

Re: [time-nuts] another Ebay mixup, 5370

2007-06-10 Thread Didier Juges
Well John, since you are asking for it (like I did not know the question was coming...) I spent about an hour this morning trying to understand why 7470.exe had stopped working with my old Prologix controller, which has been assigned permanent duty as the 494P screenshot dude. The program would

Re: [time-nuts] another Ebay mixup, 5370

2007-06-10 Thread Didier Juges
Just for grins, I switched the 5370A to external reference and used the 10 MHz from the Thunderbolt (through my cheap distribution amplifier) and the 10 MHz output of the 5370A did not change a bit (as seen on the scope). So the spikes in the waveform must be coming from the lack of selectivity

Re: [time-nuts] HP5370B in the house

2007-06-22 Thread Didier Juges
Congratulations Magnus. Everyone needs at least one HP 5370, the more the better, even though mine are 'A' models... One thing that has been mentioned before: the 5370 runs hot, both in terms of performance (good) and heat-wise (not so good). Be careful with the rear heat sink. You can fry egg

Re: [time-nuts] Tboltmon query

2007-06-23 Thread Didier Juges
This appears to be the full Hint box. I looked at the .exe file with an ASCII editor and there is nothing else. (see attached) Didier KO4BB -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Brown Sent: Saturday, June 23, 2007 7:41 PM To: Discussion of

Re: [time-nuts] ? phase comparison or other device

2007-06-27 Thread Didier Juges
That will be welcome of course. Please note that I will be out of the country for a week starting tomorrow (June 28), so anything uploaded will have to wait until my return to be found at the usual place. However, anything uploaded can be immediately downloaded using ftp and the same login accou

Re: [time-nuts] Was Tracor 527A manual...now Tracor 527E Manual

2007-07-07 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] Login: manuals Password: manuals It's all in http://www.ko4bb.com/ham_radio/Manuals/1_Upload_Instructions.html Didier -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dick, W1KSZ Sent: Wedne

Re: [time-nuts] 527A manual

2007-07-07 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] That's fine, I have limited internet access at the moment, so I can't move it to its final destination yet, but anyone can download it from the upload directory right now. Just use the same credentials: login: manuals password: manua

Re: [time-nuts] HP 5370B jitter

2007-07-13 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] Magnus, My first 5370A had severe distortion on the 10 MHz output, but in my case. It looked like 30 MHz with some 10 MHz component (no 5 MHz), and was otherwise stable. It turned out some of the capacitors in the output filter of th

Re: [time-nuts] Cs stability

2007-07-17 Thread Didier Juges
Or see a failed TIC test which actually displayed the delay in a piece of coax showing the temperature in the room as the air conditioning was turning on and off over night. http://www.ko4bb.com/Test_Equipment/data/HP5370A coax cable delay.png I did not calibrate this thermometer though :-) Did

Re: [time-nuts] HP 5370B low frequency modulation

2007-07-23 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] I have seen cold solder joints on thermal fuses and certain types of capacitors, while the rest of the instrument was fine with no sign of corrosion. I think it has to do with the metal used for certain component leads. Either they w

Re: [time-nuts] HP 5370B low frequency modulation

2007-07-23 Thread Didier Juges
t; Brooke Clarke > http://www.PRC68.com > http://www.precisionclock.com > > > > Didier Juges wrote: > >> ); SAEximRunCond expanded to false >> Errors-To: [EMAIL PROTECTED] >> >> I have seen cold solder joints on thermal fuses and certain types of >> capacitors, w

Re: [time-nuts] Time may not exist

2007-07-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] I think what is proposed is that time, while real, would not be a fundamental dimension of the universe, it would be a dimension of convenience, due to our lack of understanding of the underlying principles. It is interesting conside

Re: [time-nuts] HP 5370B low frequency modulation

2007-07-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] Of course, any method is only as good as it is implemented. Crimping gets rid of a number of chemistry problems, and creates few problems in return. One problem with crimping coax cables is that crimping the braid is usually done aga

Re: [time-nuts] HP 5370B low frequency modulation

2007-07-28 Thread Didier Juges
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Harris Sent: Saturday, July 28, 2007 9:27 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] HP 5370B low frequency modulation Didier Juges wrote: > ); SAEximRunCond expanded to false > Errors

Re: [time-nuts] Time may not exist

2007-07-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] That is the comfort of familiarity :-) Well, as much as I am attracted by the mysteries of science, I am quite happy solving relatively mundane problems everyday like so many engineers. So much so that I am not sure what it would tak

Re: [time-nuts] HP 5370B low frequency modulation

2007-07-28 Thread Didier Juges
hout using any center insulator, or center pin. The screw on BNC's that you can get at Radio Shack hardly qualify as a connector. -Chuck Harris Didier Juges wrote: > ); SAEximRunCond expanded to false > Errors-To: [EMAIL PROTECTED] > > I was referring to the crimp connectors like

Re: [time-nuts] Scope Clock

2007-08-03 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I think you mean "Most *analog* scopes can be used in X-Y display mode". I have not looked closely, but I do not remember seeing X-Y mode on a DSO, even though I am sure the high end models support it. Didier KO4BB -Origi

Re: [time-nuts] Prologix GPIB/USB ,RS232 or Ethernet converter

2007-08-12 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I have 4 of the GPIB-RS-232 variety, two micro488 from IOTech and two Serial Controllers BlackBox (http://www.ko4bb.com/Test_Equipment/GPIB.html) These are is still available from the vendors I believe, but at $600 or so list,

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Brooke, Why don't you install PDF Creator? It's a free printer driver that creates pdf files, so any program that can print can create PDF's. You can set the page size to what you want, so I use 11x17 for schematics. Google:

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Brooke, Re: my last post, I am not sure I read your mail correctly. PDF Creator is useful when you have a program that can open the document, I do not know what program is normally used to open .HPG files... Didier KO4BB --

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I used the free SwiftView viewer to render the page on screen, then PDF creator to print it to pdf. The result is readable, I have uploaded it to http://www.ko4bb.com/Test_Equipment/E1938.pdf Didier KO4BB > -Original Mes

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Jean-Louis, you can upload it to my server http://www.ko4bb.com/ham_radio/Manuals Instructions are at the top of the page Merci d'avance, Didier KO4BB > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMA

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Magnus Danielson > Sent: Tuesday, August 28, 2007 5:22 PM > To: time-nuts@febo.com; [EMAIL PROTECTED] > Subject: Re: [time-nuts]

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Then you obviously do not know PDF-XChange viewer (you are forgiven, I did not know until last week's review in PCWorld). PDF-XChange Viewer lets you edit/markup pdfs and it is free and fast, highly recommended. I do not know i

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Thank you, It's been moved to the Test Equipment page http://www.ko4bb.com/Test_Equipment/E1938_asdrawb.pdf Didier KO4BB > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jean-L

Re: [time-nuts] HP E1938 Web Page

2007-08-28 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Anyone is welcome to download from where it is and put it where one chooses. I am just supporting an experiment in pdf conversion and offering a place where people can upload documents of general interest. Some documents are to

Re: [time-nuts] HP 5370B low frequency modulation

2007-08-30 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Richard > (Rick) Karlquist > Sent: Thursday, August 30, 2007 10:22 AM > To: Discussion of precise time and frequency measurement >

Re: [time-nuts] HP 5370B low frequency modulation

2007-08-30 Thread Didier Juges
Magnus Danielson [mailto:[EMAIL PROTECTED] > Sent: Thursday, August 30, 2007 6:41 PM > To: time-nuts@febo.com; [EMAIL PROTECTED] > Subject: Re: [time-nuts] HP 5370B low frequency modulation > > From: "Didier Juges" <[EMAIL PROTECTED]> > Subject: Re: [time-nuts]

Re: [time-nuts] HP 5370B low frequency modulation, gold

2007-08-30 Thread Didier Juges
My experience is that thermal cycling and vibration exacerbate the problem very greatly. We have been making both commercial and military products for a long time, and we started seeing the problem in military products much before we ever saw it in commercial products. The intermetallic compound i

[time-nuts] HP 5370 socket problem fixed...

2007-09-02 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Well, I finally came around to replacing the sockets on one of my HP 5370A counters. I have two of these counters and both of them have had severe socket problems. The counters would work for a short while after wiggling the ch

Re: [time-nuts] OT: You know your getting old when...

2007-09-06 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Sure sign of dyslexia :-) Didier > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Harris > Sent: Thursday, September 06, 2007 5:35 PM > To: Discussion of precise time and

Re: [time-nuts] Fwd: FAASafety.gov - General Information "Terminationof 121.5 MHz Beacons fo...

2007-09-07 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Well, it does not seem there is going to be a lot of lost love on that one, considering the rate of false alarms... Didier KO4BB > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of

Re: [time-nuts] Fw: UNIQUE CLOCK

2007-09-09 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I like to see the mechanics at work on that one. However, on this one, the month is not very intuitive, but it makes sense once you realize there is no month 0... Maybe they should have labeled it. The first one was shockwave,

Re: [time-nuts] 10811A

2007-09-16 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Mike, How big is this book? Is it a hard cover, or would it be hard to put on a scanner? I have access to a good office scanner at work, I would be willing to do the scanning and put a pdf on my web site if you send me the bo

Re: [time-nuts] OT: Connecting Racal 1992 to GPIB

2007-09-16 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Nigel, You are welcome to upload any manual to my web site, the instructions are at the top of the directory: http://www.ko4bb.com/ham_radio/Manuals Didier KO4BB > -Original Message- > From: [EMAIL PROTECTED] > [mai

Re: [time-nuts] 10811A

2007-09-16 Thread Didier Juges
e-nuts" 73 - Mike > > > > Mike B. Feher, N4FS > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Didier Juges > Sent: Sunday, September 16,

[time-nuts] FW: OT: Connecting Racal 1992 to GPIB

2007-09-17 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Racal 1991-1992 manual uploaded to http://www.ko4bb.com/ham_radio/Manuals Thanks Nigel _ From: GandalfG8 Sent: Monday, September 17, 2007 2:43 PM Subject: Re: [time-nuts] OT: Connecting Racal 1992 to GPIB Manua

Re: [time-nuts] M$-Vi$ta-compliant PC RTC clock card?

2007-09-19 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of James Maynard > Sent: Wednesday, September 19, 2007 7:03 PM > To: time-nuts@febo.com > Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]

Re: [time-nuts] Prologix and Windows 98SE

2007-09-20 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY The last version of QuickBasic for DOS (v4.5) only supports 2 COM ports (COM1, COM2). I did have a version of VBDOS, but I have lost it a long time ago, so I can't tell what it did. Visual Basic will support at least 16 (I u

Re: [time-nuts] softmark-usb-gpib

2007-09-20 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY If you run a development system like Visual Basic 6.0, you can see the controls that are available in an OCX file very easily. It does not tell you what they do, but with any luck, it should not be too hard to figure out if the

Re: [time-nuts] M$-Vi$ta-compliant PC RTC clock card?

2007-09-21 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY That's probably what James had in mind when he said: "(I know that some on this list will say, "You nitwit, you should be another OS than M$ Vista." Such replies will not be helpful to me.)" :-) Yet, there simply may never be

[time-nuts] Uploads to my web site

2007-09-23 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY For some reasons, ftp upload to my web site ftp.ko4bb.com is currently unavailable (at least to me, you are free to try...) My ISP is working on the problem, whatever that is. If you have manuals to upload, just be patient,

Re: [time-nuts] FMT on October 13

2007-09-24 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I guess it depends on signal to noise ratio. With reciprocal counters, you only need one period to measure as acurately as you need, but to have good acuracy, you need very good S/N, as there is no filtering possible. For exam

Re: [time-nuts] FMT on October 13

2007-09-26 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I just wanted to point out that with reciprocal counters, you can get resolution much better than the 1Hz/s you would get with conventional frequency counters, even though the actual accuracy of the measurement may be way off.

Re: [time-nuts] Basic regenerative-divider questions

2007-09-29 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY They are non-linear when considering the LO port, and we try to make them linear considering the RF and IF ports, that's what makes them hard to do :-) Didier KO4BB > -Original Message- > From: [EMAIL PROTECTED] > [m

Re: [time-nuts] Fury OEM GPSDO board

2007-09-30 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Said, Will the Fury board work with a GPS receiver other than an M12? Would it make sense to even want to do that, or would the performance be sacrificed too much? Didier KO4BB > -Original Message- > From: [EMAIL PRO

Re: [time-nuts] Fury OEM GPSDO board

2007-10-01 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: Sunday, September 30, 2007 11:49 PM > To: time-nuts@febo.com > Subject: Re: [time-nuts] Fury OEM GPSDO bo

Re: [time-nuts] Sputnik

2007-10-05 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Thomas A. Frank > Sent: Friday, October 05, 2007 6:26 PM > To: Discussion of precise time and frequency measurement > Subject: R

Re: [time-nuts] OT: Test for NI IEEE-488 interface

2007-10-06 Thread Didier Juges
Ulrich, I do not have a plug-in NI card (I do have a USB type controller from NI though) so I am not sure what I am going to say will work, but it's worth a try. I believe the IEEE-488 controller has its own address (that is not often used, but the IEEE-488 spec requires that), so you should be a

Re: [time-nuts] OT: Test for NI IEEE-488 interface

2007-10-06 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Ulrich, I'll be glad to. It's here, somewhere :-) Didier > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Ulrich Bangert > Sent: Saturday, October 06, 2007 11:18 AM > To: 'D

Re: [time-nuts] Improving the stability of crystal oscillators

2007-10-10 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I bought 10kohm nominal NTC thermistors from Digikey, P/N 490-4653-ND. They are very small, 1/10th of an inch long or so. I have used those (or similar parts) in projects both at home and at work (in military equipment...) for

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

2007-10-20 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I did write some QuickBasic code for that plotter a number of years ago. I used it to plot data from an HP 8566 that was subjected to calculations that were more easily done in a PC than on the instrument. I also plotted data fr

Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux

2007-10-20 Thread Didier Juges
ement > Subject: Re: [time-nuts] OT: Need HP 7475A Drivers for XP or Linux > > I'm looking at the "Add Printer" dialog in WinXP right now. I > see "HP-GL/2 Plotter" and "HP 7550 Plus" listed. Shouldn't > one of those work? > > > ---

Re: [time-nuts] Scopes and 1 PPS signals?

2007-10-23 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Some DSOs (my lowly Tek 210 does) have a peak detect acquisition mode where it will analyze the signal at the highest speed of the A/D converter regardless of sweep speed and report the min and max for each displayed pixel line.

Re: [time-nuts] Scopes and 1 PPS signals?

2007-10-23 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I took some pictures of my Thunderbolt's PPS output. While it's pulse is not quite as narrow as what you report, it's 10uS, way too narrow for the scope to display it in normal ("Sample") mode at 250mS/div (the fastest setting t

Re: [time-nuts] Scopes and 1 PPS signals?

2007-10-23 Thread Didier Juges
fter 3 emails I still have not been > able to see a programming manual for it. Although they do > have a software package. > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.precisionclock.com > http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Wea

Re: [time-nuts] Scopes and 1 PPS signals?

2007-10-23 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I read this: "But using an HP 54501A DSO it's almost impossible to determine the period. http://www.prc68.com/I/O1814.shtml"; It seems he wanted to measure the period. For once, the thread actually was about the original quest

Re: [time-nuts] Digital Scopes - suggestions

2007-10-24 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I did some more experiments with the Tek TDS-210. When measuring the PPS signal from the Thunderbolt, I can offset the trigger point in a calibrated fashion to the left of the screen up to the 250uS/div sweep speed. That means

Re: [time-nuts] M100.pdf

2007-10-25 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi guys, Yes it's still in the upload section. At the moment, my uplink is busy uploading ~2.5 GB of manuals donated by someone, so I'll get to the M100 as soon as possible. I'll be out of town tomorrow, so it may be Saturday.

Re: [time-nuts] Scopes and 1 PPS signals?

2007-10-25 Thread Didier Juges
p://www.precisionclock.com > http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam > > > Didier Juges wrote: > > Some DSOs (my lowly Tek 210 does) have a peak detect > acquisition mode > > where it will analyze the signal at the highest speed of the

Re: [time-nuts] M100.pdf

2007-10-26 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I know I have not been consistent with file names. I have started converting the directories to underscores instead of blank spaces and will work my way through the directory structure in an attemp to rename everything in a more

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