Re: [time-nuts] are any time-nuts also random-nuts?

J. Forster wrote: Many years ago, when the State Lottern Numbers Game started up here, I noticed that doubles were coming up a lot... like 4662. I was utterly convinced they were overrepresented. However, being cheap and sane, I decided to test the theory before spending $$. I collected ALL

Re: [time-nuts] Fwd: rare stuff available (National Company NC-1001 Atomichron)

Philip Pemberton wrote: First, I have a set of original DEC OS/8 TU56 distribution tapes. I emphasize, these are *original*, nearly pristine, DEC-labeled distribution tapes. I've had these for nearly thirty years. 'Nuff said. SNIP Second, I have an Atomichron. Yes, a real one, a

Re: [time-nuts] Anyone know a portable way of getting seconds since epoch?

2009/10/13 Poul-Henning Kamp p...@phk.freebsd.dk: In message 286f7bad0910130703v6680affbx95905a440...@mail.gmail.com, David  Kirkby writes: I've asked this on comp.unix.shell, but never got a 100% satsifactory answer. Perhaps someone here might know. Does anyone know how to get the number

Re: [time-nuts] beryllium oxide

Marco IK1ODO wrote: Robert, Some power tubesmay use it internally. As far as I know, from many discussions with power tube manufacturers, no power tube uses beryllia, except for that conduction-cooled Eimac tubes. It's simply not needed. Other tubes (not power ones) may be different, but I

Re: [time-nuts] beryllium oxide

Dr. David Kirkby wrote: Marco IK1ODO wrote: Robert, Some power tubesmay use it internally. As far as I know, from many discussions with power tube manufacturers, no power tube uses beryllia, except for that conduction-cooled Eimac tubes. It's simply not needed. Other tubes (not power ones

Re: [time-nuts] US ebay sellers who won't ship outside the US

John May wrote: I'm in the UK and am often frustrated when a nice piece of kit is offered for sale on the 'bay by dealers in the US who won't ship overseas. I've been looking for an HP 5370B and have lost out on a few nice looking units because of this. There's one sitting there just now

Re: [time-nuts] Finally acquired a 5370B

Jim Palfreyman wrote: Hi all, Well getting a second hand 5370B will be no big deal for those of you in the US, but in Australia getting one of these units is very expensive due to rare local availability and cost of postage from the US. I was recently quoted US$350 - more than the unit

Re: [time-nuts] OT: Anyone programmed HP 59306A relay actuator (or other old device)?

Dr. David Kirkby wrote: I know this is a bit off-topic here, but has anyone here ever programmed an HP 59306A relay actuator http://www.home.agilent.com/agilent/product.jspx?cc=USlc=engnid=-536900193.536882169 which consists of 6 SPDT relays programmable via GPIB? I eventually found

[time-nuts] OT: Anyone programmed HP 59306A relay actuator (or other old device)?

); (It's not clear to me if this can accept multiple commands at once). Anyone got any ideas of what NI commands can be used to executes sequences 1,2,3 and 10 in table 3-3? David Kirkby ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] OT: Anyone programmed HP 59306A relay actuator (orother old device)?

Daun Yeagley wrote: Hi David Don't worry about all the level stuff. That's internal to the box (59306). The only thing you need to worry about is how to generate the proper commands on the bus for your particular H/W-S/W combination. But looking at the example program, one sends * ? to

Re: [time-nuts] OT: Anyone programmed HP 59306A relay actuator (orother old device)?

Didier Juges wrote: Remember these units don't have uC, so any signal that would normally depend on some timing must be generated externally, i.e. come from the bus. I suspect the box might need some signals that other equipment (uC equipped) may not absolutely require. However, this being a

Re: [time-nuts] OT: Anyone programmed HP 59306A relay actuator (or other old device)?

Brooke Clarke wrote: Hi David: The HP 59000 series boxes were some of the very first HP-IB instruments made. They are what might be called glue boxes used to build systems. As has been pointed out there is not a micro controller and in addition there is no IEEE-488 interface chip (this

Re: [time-nuts] OT: Anyone programmed HP 59306A relay actuator (or other old device)?

Brooke Clarke wrote: But, since there's no micro controller you should not send any characters after the single command byte. No CRLF, no EOI. You may need to explicitly set the termination sequence so that these are avoided. Looking at the manual on the HP 59306A, it says of the EOI line

Re: [time-nuts] OT: Anyone programmed HP 59306A relay actuator (or other old device)?

Brooke Clarke wrote: Hi David: Sorry about that. You're correct EOI and a number of the other control signals are not used. Do you have a complete schematic, mine has the left side missing and I can't read the names of the lines. Have Fun, Brooke Clarke I found this on the Agilent

[time-nuts] Anyone got a spare PRS10 rubidium to sell?

A friend of mine is looking for a Standford PRS-10 rubidium. Is there anyone who has one they want to sell - preferably in the UK, but that is not essential. He could pay via Paypal. dave ___ time-nuts mailing list -- time-nuts@febo.com To

[time-nuts] Strange reports of bocked messages to timenuts

I've been receiving some emails which claim to come from my ISP saying my messages to timenuts have been blocked due to spam. A typical subject line is [time-nuts] ***Your message was blocked*** But I've not sent a message! Full message below. Dave --- X-Account-Key: account2 X-UIDL:

Re: [time-nuts] Strange reports of bocked messages to timenuts

David Ackrill wrote: Dr. David Kirkby wrote: I've been receiving some emails which claim to come from my ISP saying my messages to timenuts have been blocked due to spam. A typical subject line is [time-nuts] ***Your message was blocked*** But I've not sent a message! I don't

Re: [time-nuts] NI GPIB cards

Didier Juges wrote: Other than that, in my experience, NI products have been remarkably compatible in the last 10 years, from a 30,000 feet level (plug pretty much anything into anything and it will work with any NI software, even though performance will vary and you may need new drivers).

Re: [time-nuts] Time-Nuts Archive?

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Jason Rabel wrote: Is there an archive of past digests that I can search for useful tidbits of information? Yes!!! http://www.febo.com/pipermail/time-nuts/ I've spent hours on end sifting through them. Google

Re: [time-nuts] from Sputnik to CD

); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Poul-Henning Kamp wrote: I have paid my dues in the HiFi world, but I have always insisted that there be a solid scientific basis for any product I bought. When faced with claims that picosecond jitter can be perceived by

Re: [time-nuts] Gentlemen, unlimber your Broadband Connections

Neon John wrote: For here is the treasure-trove for those of us who like old machines, fire bottles and big hunking things that glow and make noise. http://www.pmillett.com/ In particular, http://www.pmillett.com/technical_books_online.htm Over a gig of scanned tube manuals, textbooks,

Re: [time-nuts] OT: Audiophoolery

On Fri, 2007-04-20 at 02:21, Bruce Lane wrote: Discussions involving audiphoolery, particularly where silly things like $500 knobs and atomic references for CD writing are involved, never fail to amuse me. With that in mind, and given the current thread about Antelope Audio, I

Re: [time-nuts] HP 10811-60155 pinout

Hello, I believe Tom http://www.leapsecond.com/ __ has a manual on his site. I'm on my PDA just now so will not look myself, but I'm sure you can find it there. Dave -Original Message- From: [EMAIL PROTECTED][EMAIL PROTECTED] Sent: 1/13/07 3:17:47 AM To:

Re: [time-nuts] HP 5370A manual

remove it from my site, as I need to free up some disk space. But until it actually appears, I'll keep it here. -- Dr. David Kirkby ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Hello and HP-5370A question

remaining portion.] on my original post. I did this from a PDA, so don't like typing too much on that. -- Dr. David Kirkby ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Hello and HP-5370A question

BUT, looking at the 5370A manual (I have got a PDF thanks to the work of David Kirkby G8WRB), it seems that there are no less than FOUR gaps in the card array... please, could somebody confirm me this point?. The manual I scanned was for the 5370B, not the A. Are you sure you

Re: [time-nuts] Administrivia: Message Sizes

that is the best way to share. I agree. It is *much* more efficient use of bandwidth. For 300 people to be sent a document, where only 5 want it, seems rather silly. It just slows the internet for everyone. I question if there is any need to allow attachments. My guess is there is not now. -- David Kirkby

Re: [time-nuts] Fan for old HP synthesizer

Magnus Danielson wrote: From: Poul-Henning Kamp [EMAIL PROTECTED] Subject: Re: [time-nuts] Fan for old HP synthesizer (was RE: time-nuts Digest, Vol 21, Issue 20) Date: Tue, 18 Apr 2006 21:43:18 +0200 Message-ID: [EMAIL PROTECTED] In message [EMAIL PROTECTED], Christopher Hoover writes:

Re: [time-nuts] D-Links NTP server vandalism

Poul-Henning Kamp wrote: I'm sure some of you thought time-signals were an risk-free hobby: http://people.freebsd.org/~phk/dlink/ I don't see the Dlink DWL-700AP wireless access point on your list, but I strongly suspect my DWL-700AP is getting its time from an ntp server, as I can

Re: [time-nuts] OT magazine scanning

John Day wrote: I think I have seen this topic discussed here some time ago. I have been receiving RF Design magazine for some years and I no longer have space for them. They are not available on CD-ROM, so maybe somebody here knows of a scanning service that could handle a job like

[time-nuts] Article on quartz locking pendulum clock

A list member kindly snet me a copy of the article from about quartz locking a pendulum clock. It uses an electromagnet and a magnet on the pendulum. I have scanned this at 300 dpi grayscale and converted to pdf. It may be found at: http://www.g8wrb.org/useful-stuff/time/pendulum+quartz.pdf

Re: [time-nuts] Quartz assisted pendulum clock.

Dennis O'Keefe wrote: Earlier this week I made a claim that I am a Time Nut from way back. In further evidence of that, I report that I actually clipped and saved that article. Reference: Scientific American, September 1974, pages 192 - 198, in a section called The Amateur Scientist.

Re: [time-nuts] Help - Hope?

Mike Feher wrote: I just bought myself a couple of Hakko model 850 hot air surface mount soldering stations and various nozzles. But that is at quite a considerable cost. Fine if you are a professional or dedicated hobbiest, but not if you are a child. It's hard to see how a significant

[time-nuts] Mirrors for HP 5370B time-inteveral counter manual

A number of people have offered to host the 600 dpi scanned manual for the HP 5270B time interval counter, which I can no longer host due to disk space limitations (it is over 500 MB). I've listed the locations on my own web site, http://www.g8wrb.org/useful-stuff/time/HP-5370B/ but in case

[time-nuts] Manual for HP 5370A (in addition to B) is now online

note on the 8970A noise figure meter http://www.g8wrb.org.uk/data/HP/8970A-1.pdf The manual for the meter is on the Agilent site. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk

Re: [time-nuts] Interfacing a 8dBm sine output of an OCXO to adigital logic standard

lot of chips, not the jitter you would measure on a single output on a single chip. What you are describing sounds more like the 700ps Device to Device Skew. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk

Re: [time-nuts] Some HP Journal scans

John Miles wrote: I've just finished scanning the HP Journal issues that cover the 8566A and 8568A spectrum analyzers. They make great reads if you own or use one of these beasts. These issues are very applicable to the later -B suffix instruments as well, since the differences were confined

[time-nuts] Cesium beam tube on eBay

they saw tube on this they pulled it out of the test set. I don't see any cut wires so it looks like they unhooked it. It is about 15 by 5 1/2 inches. I'd hate to guess the value of the item they destroyed to pull the tube for him!! -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow

Re: [time-nuts] Re: Accuracy of a sound card

you using a modern PC with the high-end sound card, and an old PC with a cheap ISA card for the data collection. There are free drivers for FreeBSD, linux and possibly Windoze, but I am not sure about the latter. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live

Re: [time-nuts] Re: Accuracy of a sound card

Alberto di Bene wrote: David Kirkby wrote: If your PC has an ISA slot, or you have an older PC with an ISA slot, then a GPIB board is not that expensive on eBay. Just save yourself a lot of hassle and get one from National Instruments, as they are better supported than other makes. I have

Re: [time-nuts] Re: Accuracy of a sound card

-SIZE-LAC-E-EC_W0QQitemZ7537580605QQcategoryZ78217QQssPageNameZWDVWQQrdZ1QQcmdZViewItem starting at $179 never got a single bid. I really can't understand why nobody took such a wonderful oppotunity to own a card. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live

Re: [time-nuts] Low cost synchronization

in voltage which means the clock runs slow. But here at least, there is nothing very clever about how the time on those clocks is kept. Which suits me, as sometimes I get electricity cheap during the day now! -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex

[time-nuts] 5370b on ebay - ends ib 1 hour

Just spotted this. No bids starting at $199 http://cgi.ebay.com/C18418-HP-5370B-Universal-Time-Interval-Counter_W0QQitemZ7534725187QQcategoryZ25401QQrdZ1QQcmdZViewItem -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch

Re: [time-nuts] Agilent App Note 174-10 (Cable Delay)

meter (10-1500MHz) in either electronic or a paper copy they would loan me, could they let me know. I have two electronic copies, both of which have problems - one is a very old manual and the other incomplete. -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical

Re: [time-nuts] Agilent App Note 174-10 (Cable Delay)

Agilent aware of this, but they are not sure if the problem can be fixed or not. If I can fix it myself, I'll let them have a complete copy. -- Dr. David Kirkby PhD CEng MIEE, If you use Windows, there are two free programs for merging pages or entire PDF files - PDF Blender and PDFTK

Re: [time-nuts] Cable Delay Measurements

me know off-list. -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical Physics, Mallet Place Engineering Building, Gower St, University College London, London WC1E 6BT. ___ time-nuts mailing list time-nuts@febo.com https

Re: [time-nuts] Cable Delay Measurements

-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster

[time-nuts] Web site to register manuals you have or want for test equipment.

ON THE PAGE, but don't ask me about specific manuals unless I have personally listed it. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts

Re: [time-nuts] Agilent appnote

in the calibration procedure of vector network analysers. Application notes on their theory should be on the Agilent web site. -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical Physics, Mallet Place Engineering Building, Gower St, University College London, London WC1E 6BT

[time-nuts] Microwave counter with RPS10 rubidium on eBay

I think for the oscillator alone only a few months ago, so getting a microwave counter for a couple of hundred $'s extra don't look a bad deal. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk

Re: [time-nuts] This list

is probably not too far off. I don't think it is anything the list manager could do anything about. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts

[time-nuts] HP / Agilent manuals

are missing), and the HP 5370B time interval counter manual I scanned http://www.g8wrb.org.uk/useful-stuff/time/HP-5370B/ will be on the Agilent site soon. I understand the HP 8970A noise figure meter will be added at some point, which is the one I am looking for. -- David Kirkby, G8WRB Please

Re: [time-nuts] HP / Agilent manuals

Poul-Henning Kamp wrote: In message [EMAIL PROTECTED], David Kirkby writes: Before buying any manual from eBay or equivalent, you should check if it can be downloaded from the Agilent web site as they are getting added. The HP 8970B noise figure meter was added a couple of weeks ago

Re: [time-nuts] am, m, pm and ?

about 5 emails around on the subject. From what I gathered there, it is not used consistantly throughout the world by the general public, with some countries considering noon 12am, and others 12pm. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http

[time-nuts] How do I measure oscillator frequency using 1pps?

. Then the TI will be somewhere in the range 0 to 1 second, and the jitter can be averaged out in software. I'm basically confused, as I am sure you can tell. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk

[time-nuts] 1pps signal presence with no GPS signal.

thought it more sensible to cease the 1pps signal as soon as a GPS is not locked to at least one satellite. Comments? -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk

Re: [time-nuts] 1pps signal presence with no GPS signal.

I can't understand why the default is to not to. David Kirkby David Kirkby wrote: I have a Synergy GPS unit, which is fitted with a Motorola M12+ receiver. Even if there is no signal (even no antenna connected) the 1pps light flashes on the front and there is a 1pps signal at the output

Re: [time-nuts] 1pps signal presence with no GPS signal.

unless the 1pps is present, so it would seem to me the PRS10 would benefit from no 1pps signal rather than the wrong one. But perhaps I am wrong. In the case of a 10811A via the Shera board, I am less sure. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http

Re: [time-nuts] Data collection cycle -- multiple sources to one counter?

the next day. I don't think you can get evaluation boards for nothing, but I have not actually tried. In contrast, I've always had to pay for Mincircuits bits, but do happen to have one of their PIN diode switches sitting around. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org

Re: [time-nuts] Data collection cycle -- multiple sources toonecounter?

change in the load impedance. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo

[time-nuts] Agilent rep looking .. 5370A and 5370B.

not considering myself serious, but what thinking the other day a second HP5370B would be nice. However, I will get my pendulum clocked to a 10811A (or perhaps a Stanford PRS10) first, before worrying about anything else. -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical

Re: [time-nuts] Battery backup of frequency standards

already be doing it. I appreciate what you are saying. I will test the seals periodically. -Chuck Dr. David Kirkby wrote: For obvious rasons a frequency standard should be battery backed. I was intending puting the batteries in the same box as my GPS/rubidium etc, but was advised

Re: [time-nuts] Programming of 5370B

runs 24/7, the PC route would have been more expensive. -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical Physics, Mallet Place Engineering Building, Gower St, University College London, London WC1E 6BT. ___ time-nuts

[time-nuts] Accessories for Synergy GPS unit.

recently, so want to keep costs as low as possible. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com

Re: [time-nuts] 10811 serial numbers

was missing, you could reasonably assume someone has taken it apart at some time? -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com

[time-nuts] Fine frequency adjustment in 5370B

% sure there is no pot. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Fine frequency adjustment in 5370B

that will be. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Warning: HP oscillators on eBay from todoelmondo(Ray Mahoney)

this is to test a sufficient number to get statically valid data - something that I doubt few would have sufficient oscillators to be able to do, and even fewer could be bothered to do. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch

Re: [time-nuts] Warning: HP oscillators on eBay from todoelmondo(Ray Mahoney)

Poul-Henning Kamp wrote: In message [EMAIL PROTECTED], David Kirkby writes: I assumed (perhaps incorrectly) that there would be a higher probability of a randomly chosen 10811A being better today than a randomly chosen 10811-60111. I guess the only way to know this is to test a sufficient

Re: [time-nuts] Warning: HP oscillators on eBay from todoelmondo(Ray Mahoney)

Poul-Henning Kamp wrote: In message [EMAIL PROTECTED], David Kirkby writes: I seriously doubt you will ever get a better and more researched answer than: Tom has said he has tested bad 10811A's and good 10811-60111's. But Tom has not said (to me anyway) if the peformance of the oscillators

Re: [time-nuts] Warning: HP oscillators on eBay from todoelmondo (Ray Mahoney)

set the reply address to myself only. -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman

Re: [time-nuts] Warning: HP oscillators on eBay from todoelmondo (Ray Mahoney)

David Kirkby wrote: Feel free to continue to discuss it privately with me if you wish. I have set the reply address to myself only. I did change the reply to address, but the mailing list has changed the reply to adress once again. One obviously can't override that process. -- David Kirkby

[time-nuts] Warning: HP oscillators on eBay from todoelmondo (Ray Mahoney)

contact. I sent him a FAX to the US Patent Office on Thursday where he works, simpling asking he contact me, just in case his email is not working, but he has not done so. He seems to have email addresses of [EMAIL PROTECTED], [EMAIL PROTECTED] and [EMAIL PROTECTED] -- David Kirkby, G8WRB

Re: [time-nuts] Anyone want a pdf of the HP 5370B manual ?

/mailman/listinfo/time-nuts -- David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time

Re: [time-nuts] HP-5370B question

is not ideal. If you want a manual, drop me a private email and cc it to drkirkby AT medphys DOT ucl DOT ac DOT uk. -- Dr. David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk

[time-nuts] Could someone scan 5 pages from 5370B manual?

on page 3-24, at the bottom where the notes are. The notes are the same, but the formatting is a bit different. Or if you can do a better quality scan of the pages, that would be helpful. -- Dr. David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http

Re: [time-nuts] Physical Clocks

. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical Physics, Mallet Place Engineering Building, Gower St, University College London, London WC1E 6BT. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman

[time-nuts] Anyone want a pdf of the HP 5370B manual ?

it commerically. If anyone has later revision sheets, that cover later serial numbers, let me know. -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical Physics, Mallet Place Engineering Building, Gower St, University College London, London WC1E 6BT

Re: [time-nuts] What are people paying for Stanford PRS10 rubidium standards?

Poul-Henning Kamp wrote: In message [EMAIL PROTECTED], David Kirkby writes: I find that if I always assume the worst, then I seldom get disappointed, and this has generally worked fine for me. But if you always assume the worst, you would never buy anything on eBay. I know many people who

Re: [time-nuts] What are people paying for Stanford PRS10 rubidium standards?

mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts -- Dr. David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing list time

Re: [time-nuts] Upper limit on phase noise from two oscillators.

Dr. David Kirkby Ph.D. CEng MIEE, Senior Research Fellow, Department of Medical Physics and Bioengineering, Malet Place Engineering Building, Gower St, University College London, London, WC1E 6BT Tel: 020 7679 0273 On Wed, 27 Apr 2005, Tom Van Baak wrote: If I have two different

RE: [time-nuts] Upper limit on phase noise from two oscillators.

This does not seem to make sense. No matter what you are measuring it is assumed that the phase noise of the item being measured is greater than the piece of test equipment doing the measurement, else you would not see it. My reason for asking this is that given I have nothing to make a phase

Re: [time-nuts] National Instruments GPIB board drivers for Solaris.

will check out the license and driver situation for Labview today. Sometimes home-use licenses for universities do not extend to Solaris, as it does not with Mathematica. But in that case Wolfram Reserach, the producers of Mathematica, have said they will accept it as a one off. -- Dr. David Kirkby

RE: [time-nuts] Upper limit on phase noise from two oscillators. (fwd)

intention to fool anyone. Sorry if you did not mean it that way, but I can understand a certain sense of confusion. But they are different. I just wanted to put the record straight. Dr. David Kirkby. Senior Research Fellow, Department of Medical Physics and Bioengineering, Univeristy College London

Re: [time-nuts] Brooks Shera's GPS standard or HP Z3801A??

averager (because the sawtooth does not necessairly average out to zero in that timeinterval). Even then, the PRS10+M12+T is by far the best bang for the buck I can think off. I am confused how this can be cheaper although I accept its performance should be excellent. -- Dr. David Kirkby PhD CEng

Re: [time-nuts] Brooks Shera's GPS standard or HP Z3801A??

thoughts on that sort of idea above? Any obvious flaws?? Apart from the fact it is getting more and more expensive, and less and less related to the initial aim of making a couple of hundred year old pendulum clock more accurate!!! Dr. David Kirkby Brooke Clarke wrote: Hi Tom: Don't forget that SRS has

Re: [time-nuts] Brooks Shera's GPS standard or HP Z3801A??

thoughts on that sort of idea above? Any obvious flaws?? Apart from the fact it is getting more and more expensive, and less and less related to the initial aim of making a couple of hundred year old pendulum clock more accurate!!! Dr. David Kirkby Brooke Clarke wrote: Hi Tom: Don't forget

[time-nuts] Brooks Shera's GPS standard or HP Z3801A??

are not that expensive. 5) Jitter on GPS. 6) If one needs to buy a manual on the Z3801A, that will add to its cost. Any other thoughts -- Dr. David Kirkby PhD CEng MIEE, Senior Research Fellow, Department of Medical Physics, Mallet Place Engineering Building, Gower St, University College London, London WC1E

Re: [time-nuts] HP/Agilent and manuals...

by a PDF file. I don't have to pay them anything. 4) I have signed the document, returned it to Agilent by airmail, and will await their confirmation. Sorry I am not willing to go into further details just as this minute. But when I have received confirmation, I will post further details. -- Dr. David

[time-nuts] TCXO pinout / spec wanted

a better image. The company is still in business, but has not answered my request for information. -- Dr. David Kirkby, G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ ___ time-nuts mailing

Re: [time-nuts] connections for HP 10811A ?

On Wed, 20 Apr 2005, Bill Janssen wrote: I picked up a HP 10811A today and need the connection information. I tried the WEB and went to the Bama site but at Bama they removed all HP info. Thanks Bill K7NOM I don't have time now, but are 99.9% sure I downloaded a manual (I'm not sure what

Re: [time-nuts] Re: Phase noise with a lock-in amplifier.

to the adder, but ultimately for the lock-in to work, it needs a reference oscillator, so that can not be avoided. dave k David Kirkby wrote: Mike Feher wrote: Guys, unless I am grossly misunderstanding something, the mixer method has been the long standing method by which phase noise is measured

Re: [time-nuts] Difference between HP 5370A and 5370B

do. Regards, Jim Johnson Agilent Laboratories Palo Alto, CA [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Kirkby Sent: Thursday, April 14, 2005 3:32 PM To: time-nuts

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