Re: [time-nuts] OCXO Phase Noise Measurement in Primitive Conditions

Bob, to me your ADEV plot looks pretty exactly like a measurement system noise floor plot with its typical 10/decade shape. I would assume that you connected the same signal to both counter inputs, or, both sources have been phase locked. Adrian Bob Stewart schrieb: Hi Bob, I take

Re: [time-nuts] 10811 Thermal fuse?

-f.html I'm just not sure what temperature rating the original fuse has. Maybe someone knows? Adrian Dan Rae schrieb: I'm sure this has been discussed to death before, but does anyone know of a source of thermal fuses small enough to fit in the -hp- 10811? I have found plenty of larger ones, none

Re: [time-nuts] Oscilloquartz 3210 Cesium Standard

Magnus, here is at least some information on the B-5400: http://tf.boulder.nist.gov/general/pdf/26.pdf That is the paper mentioned in the 3200 manual. Btw. do you have any information on the B-1325? Cheers, Adrian Magnus Danielson schrieb: Bert, I hope this will satisfy your curiosity

Re: [time-nuts] 10MHz Rubidium reference source for frequency counter

resolution of 50 ps is insufficient because up to 100 sec, to the most part of it, the actual ADEV of the oscillators can be below the measurement limit of the counter. Adrian Karen Tadevosyan schrieb: Thanks again for your explanations and advices. I raised this question as a ADEV measurement

[time-nuts] Varian R-20 Rubidium Frequency Standard

I got a nice old Varian R-20 rubidium frequency standard that would be nice to get working. To begin with, there is at least a problem with the voltage regulator circuit. Does anyone have a manual? I couldn't locate anything on the web. Regards, Adrian

[time-nuts] 5 to 10 MHz Qrad Driven Mixer Doubler

John, thank you for your post on the time-nuts list. Unfortunately, I couldn't locate the article you are refering to. All I could find are just two associated files, a BOM and an Excel sheet. Could you please send me a link or a copy of the article? Thanks, Adrian

Re: [time-nuts] To use or not to use transmission line splitters for GPS receivers

This article discusses timing errors due to mismatch and multiple reflections in transmissin lines: http://www.dtic.mil/dtic/tr/fulltext/u2/a508044.pdf Adrian Edgardo Molina schrieb: Dear Group, Good evening. I just arrived home after the first day of conferences at the Electrical Metrology

[time-nuts] HP 10811A failure

what has happened or what to look for first? Regards, Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] HP 10811A failure

W max. at turn on (mine draws some 9 W), and Steady state power drops to approximately 2 W at 25°C in still air at 20 V (mine draws some 1.9 W at 12 V without powering the outer oven). Adrian Azelio Boriani schrieb: And, why 12V for the oven? The 10811A manual states from 20V to 30V

Re: [time-nuts] HP 10811A failure

and capturing noise. Btw. the Sprague 6800 uF / 40 V from my RS NGA power supply has indeed died, but independently of the osc. problem. Adrian gandal...@aol.com schrieb: Perhaps a silly question, but as I get the impression that both seem to have failed simultaneously with the same fault

[time-nuts] HP 10811 Tuning Diode

to find an original diode (even though I could leave it as is). As by the manual, the original is a '0122-0244 DIODE-VVC 100PF 5% C4/C25-MIN=2 BVR-30V Mfr. 28480' Mfr. 28480 is listed as HP, but the diode is marked 'M' for Motorola and '0244' and '312'. Adrian

Re: [time-nuts] HP 10811 Tuning Diode

circuitry left, mostly the oscillator stage itself, the tunig circuit and power supply. Adrian John Miles schrieb: That's extremely interesting, Adrian. I've never heard of a noisy varactor, but then I've never looked for one, either. It'd be great if some of the problems that have been blamed

Re: [time-nuts] HP 10811 Tuning Diode

noise has gone away since I replaced the diode. The noise was clearly there, and it was also there using a test adapter and two lab power supplies. Adrian Rick Karlquist schrieb: I wonder if the glass case got a crack in it or if the kovar seal was failing. Maybe a failed solder joint (which gets

[time-nuts] 5 MHz Racal MA259 / / Sulzer Crystal Oscillator

stopped working. Is there any information about the Sulzer desiagn available? Anyone who repaired one of these oscillators? Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time

Re: [time-nuts] 5061B ops manual without missing pages?

John, yes, I have a scan. It's the one from the Agilent site. There are just some pages mixed up. Nothing appears to be missing. The pages are in this sequence: 3-5, 3-6, 3-9, 3-10, 3-7, 3-8, 3-11, 3-12 etc. Adrian John Ackermann N8UR schrieb: Does anyone have a copy of the 5061B ops manual

Re: [time-nuts] Sulzer 5A 5P PSU/battery question

to Sulzer's brilliant idea to include an independent inner oven temperature indicator, I was able to verify that nothing has changed. Now I'm waiting for the frequency to stabilize again, which I'm expecting to happen within the next 2...4 weeks. Adrian Magnus Danielson schrieb: Fellow time

Re: [time-nuts] Sulzer 5A 5P PSU/battery question

, but the oscillator stuff appears to be exactly the same. Adrian paul swed schrieb: Thanks for the pointer I have a pretty dirty pdf from some place the links very clean. Paul WB8TSL On Thu, Nov 1, 2012 at 7:24 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 11/01/2012 10:27 PM, Attila Kinali

[time-nuts] Wavecrest DTS 2077 Service Manual?

Anyone have a Wavecrest DTS 2075/77/79 service manual? I've recently got a DTS 2077 that however turned out to be defective. There was a power supply failure that I could fix, but there is still a power-up selftest error message and calibratin fails. Adrian

Re: [time-nuts] Recommended parameters for Timelab ADEV analysis

and / or your reference, or simply the noise floor of your test setup. This can be the hardest part. You might want to compare your test results with some trustworthy reference measurements like this: http://www.leapsecond.com/museum/manyadev.gif Adrian John Miles schrieb: Hi, Edgardo

Re: [time-nuts] Recommended parameters for Timelab ADEV analysis

understand that I was no longer motivated to investigate further, especially because the '131 showed much less 'improvement' as a '132 which I saw a plot of but don't have access to. Cheers, Adrian Magnus Danielson schrieb: Adrian, On 15/11/12 03:59, Adrian wrote: Hi Edgardo, however, the 53132A

Re: [time-nuts] Wavecrest DTS 2077 Service Manual?

as door stops of land fill once defective... I've never been confronted with such a poor customer sevice attitude before. Nevertheless... is there anyone who has acquired some experience with the DTS-series innards who would be willing to share his knowledge? Adrian Adrian schrieb: Anyone

Re: [time-nuts] Wavecrest DTS 2077 Service Manual?

('Test Interval Quantizer Board'). It seems like the failure is IQM board related. When I run calibration with the IQM board pulled, my unit still behaves the same way. Adrian Henk schrieb: Hi, The Wavecrest DTS 207X has a number of proms and also battery back-up devices. I think it will be wise

Re: [time-nuts] Nifty MINI TIC for DMTD work

count me in. Adrian cdel...@juno.com schrieb: As Bert mentioned once the amount if interest is established purchase details will post. We also will post a FAQ for this project. Thanks, Corby The New #34;Skinny#34; Fruit How

Re: [time-nuts] Best phase detector / mixer for 100MHz?

+23 dBm signals at hands, but I don't see that the ZRPD-1 can compete with the 11848A PD or an external +23 dBm mixer at input levels of +17 dBm and above. Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Best phase detector / mixer for 100MHz?

follow me there! These can be challenging to fix if not impossible. PAL's and other unobtainable 'field programmables' appear to die faster than anything else in that boxes. Finally, I needed three of them to get one working unit...) Adrian

Re: [time-nuts] Best phase detector / mixer for 100MHz?

Bruce Griffiths schrieb: Adrian wrote: Bruce Griffiths schrieb: Demian Martin wrote: I asked Wenzel about mixers for phase noise measurement and they directed me to Marki Microwave as what they use: http://www.markimicrowave.com/2770/Mixers.aspx I have not obtained or tested any myself

Re: [time-nuts] Best phase detector / mixer for 100MHz?

into digital signal processing before the 3562A came... Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions

Re: [time-nuts] Special integration capacitors

business to size. I only get a HP power cord listed. Adrian cdel...@juno.com schrieb: I'm selling a few of these cards. See eBay item 321033088669 I also have a quantity of the bath tub style from HP 5061 Cesium standards. (If I remember 5, 8, and 3uf available) Built specially for long time constant

[time-nuts] 3120A Phase Noise Test Probe

I just found an interesting new Symmetricom product http://www.symmetricom.com/products/test-and-measurement/phase-noise-allan-deviation-test-sets/3120A-Phase-Noise-Test-Probe/ It looks familiar, doesn't it? Adrian ___ time-nuts mailing list

Re: [time-nuts] Very challenging phase noise measurement, does anyone have an idea??

For phase noise the frequency range is 1MHz to 8/26.5/50GHz The spectrum analyzer works from 20Hz to max. Adrian Azelio Boriani schrieb: Isn't the FSUP a 110K euros equipment 20Hz-50GHz capable? 125KHz shouldn't be a problem. I had an FSUP for 25 seconds to play with... really impressive

Re: [time-nuts] Very challenging phase noise measurement, does anyone have an idea??

a RAY-3. It goes from 70kHz to 200MHz. The IF must be specified from DC, which for the above is the case. Between mixer and baseband input a lowpass filter is required to suppress the sum signal (2x f_input) sufficiently. Adrian Azelio Boriani schrieb: Yes, I have taken a look and the FSUP

Re: [time-nuts] DMTI and Timelab setup

hours, but it would be nice to know how to handle phase wraps properly. In this case, both, the reference and input frequency are normalized to 1 Hz, so the actual input frequency makes no difference. Adrian John Miles schrieb: Hi, Luciano -- The sampling interval would be whatever rate

Re: [time-nuts] GPSDO compare FTS-4060

, use TimeLab and a TI counter! Regards, Adrian Chris Howard schrieb: On 12/29/2012 7:17 PM, Magnus Danielson wrote: I would recommend to use a TIC and TimeLab to assist you on that task. It is recommended to look at the phase plot (P), frequency plot (F) and modified Allan deviation plot (M

Re: [time-nuts] Riley paper on Tight Phase Lock Loop

Hi Tom, Bill has actually published detailed schematics etc here: http://www.stable32.com/A%2010%20MHz%20OCVCXO%20and%20PLL%20Module.pdf Btw. what do you think about his small DMTD system? http://www.wriley.com/A%20Small%20DMTD%20System.pdf Adrian Tom Van Baak schrieb: Hi Bob, The TPLL

Re: [time-nuts] Low noise power supplies?

about ultra low PS design: http://waltjung.org/Library.html Adrian Richard (Rick) Karlquist schrieb: I know this topic has been discussed in the past on the list, but a colleague is asking if there are any off the shelf low noise power supplies for testing oscillators. Something a cut above

Re: [time-nuts] Low noise power supplies?

. There is an insertion loss of 6 dB to be entered in the 3048A software when using the DC block in conjunction with the 11848A. Obviously, any FFT analyzer plus LNA and coupling cap can be used for that method. The major advantage of the 3048A system is the automatic generation of plots. Adrian John

Re: [time-nuts] Low noise power supplies?

battery noise measurement. Adrian Charles P. Steinmetz schrieb: tvb wrote: I'll answer the question with anther question -- how does one properly measure power supply noise? Does it boil down to a single number, a couple of key numbers, or is it a plot, or several plots? There are a number

[time-nuts] Ultra Low Phase Noise 5 to 10 MHz Frequency Doubler

Hello, I'm forwarding the message below on behalf of Luciano, because there appears to be a problem with the time-nusts list that does no longer transmit any of his messages. Adrian + Hi all, A new paper, an Ultra Low Phase Noise 5 to 10 MHz Frequency Doubler

Re: [time-nuts] GPIB counter logging / plotting software?

John's fine TimeLab of course! http://www.ke5fx.com/timelab/readme.htm Just don't ask me which Racal counter is or isn't supported. Adrian Dan Rae schrieb: I am working on 400 - 500 MHz DDS clocks for an amateur radio project and would like to record over gpib and plot the relative frequency

Re: [time-nuts] Interesting looking crystal on ebay

%20Resonator Adrian Bob Camp schrieb: Hi That's not one of the good ones. If you look at it closely - It's mounted in springs, not clips. The same seller does have some interesting stuff though: http://www.ebay.com/itm/ULTRA-STABLE-BLILEY-QUARTZ-BG11-GLASS-ENVELOPE-WARNER-RESONATOR-HUGE-BLANK

[time-nuts] Symmetricom TimeGPS-LLR / X72 Rubidium

with these units? Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] hp5065b !!!

to get the late A3 version pages. I have to say that Corby's modification in its simplicity and achieved improvement is absolutely ingenious. Adrian Robert Darby schrieb: I have a question for the list that I'm sure Corby can address but perhaps someone else can explain as well. Corby

Re: [time-nuts] OT: HP 8590A

. Adrian Joseph Gray schrieb: Thanks to all for the advice. I agree with Said that a 8560E would be much nicer. However, I may be able to get this 8590A very inexpensively. Considering the price difference between this unit and a newer/better SA, I'm inclined to go with this one. I'm thinking

Re: [time-nuts] Advice on TRACOR 527E

as soon as I have some spare time.. Adrian gandal...@aol.com schrieb: In a message dated 07/03/2010 10:17:54 GMT Standard Time, f6...@wanadoo.fr writes: Could not locate any OM manual on the web for this equipement can somebody help ? - Once again Didier saves the day

Re: [time-nuts] HP 5065A performance vs. others

caused by load changes. After some 1 1/2 years of continous operation of my 5065A, I could't measure any difference to my 5061A, even after averaging over 1 hour of counter readings. The FRK however suffered from massive runaway after plugging it in the counter... Adrian John Miles schrieb

Re: [time-nuts] lunatic fringe time standards

If you're not looking for DIY / surplus stuff, check Schomandl or Hopf in Lüdenscheid http://www.schomandl.de/en/ http://www.hopf.com/en/index.html Eugen Leitl schrieb: Hi -- a couple somewhat lunatic questions. Figured this would be the best place to ask. Anyone aware of a time standard

[time-nuts] HP 11729C versus 11848A

...+23 dBm mixer. Replacing the 11729C PD with a ultra high level mixer should get the noise floor close to 11848A specs. It would just require to feed L and R directly into the mixer rather than using the instrument inputs. Any thoughts / experiences referring to this? Adrian

Re: [time-nuts] HP 11729C versus 11848A

specified. I wish I had some reference measurements at hands... Adrian John Miles schrieb: It's not really the mixer's fault -- there are a couple of other things to keep in mind with the 11729. The most important is that you can't measure 10 MHz sources with it unless you install an LPF

Re: [time-nuts] HP 11729C versus 11848A

. Finally, I checked the filter response, and it looks ok to me, being within +/- 0.4 dB up to 750 kHz, and +1 dB at 1 MHz, measured with the beat note. Adrian John Miles schrieb: John, I'd say you nailed it. After some more testing, I can confirm that the limiter amp and the LPF

Re: [time-nuts] HP 11729C versus 11848A

before... And, I have a noise floor of some -165 to -169 dBc/Hz at +7.5 dBm input, and I'm seeing the 10811A's some 5 dB above that. Adrian John Miles schrieb: John, I'd say you nailed it. After some more testing, I can confirm that the limiter amp and the LPF are the culprit. I opened

Re: [time-nuts] HP 11729C versus 11848A

, but we're now refering to a carrier level of +22.5 dBm instead of the above +7.5 dBm (+15 dBm versus 0 dBm at the mixer output). That's why we can now measure down to -170 dBm/Hz -(+15 dBm) = -185 dBc/Hz. Adrian John Miles schrieb: That sounds about right to me. I was guessing you meant 40

Re: [time-nuts] HP 11729C versus 11848A

Minus the 6 dB L(f) conversion factor, so we get theoretical L(f) noise floors of -176 dBc/Hz and -191 dBc/Hz. Adrian Adrian schrieb: Thanks to Rick's great hint, I'm now awaiting some AM123 amps to arrive. Why is it that I just don't get better than -165...-170 dBc/Hz? Let me try some

[time-nuts] Odd FTS 4060 Behavior

tried it yesterday again, it worked for about 2 hours before the shift appeared. Oddly enough, the green 'Locked' light was still on. This happens every 2...20 hours. Any ideas what could cause that failure? Adrian ___ time-nuts mailing list -- time

Re: [time-nuts] Odd FTS 4060 Behavior

old notes I see that the 'failure mode' 5 Mhz output was 5,000,000.500,32 Hz. It was always stable at +1E-07 off. Well, it would be much easier to have a spare 1000B, but I don't. Anyone got a 1000B that I could swap in? Adrian John Miles schrieb: Sounds like the OCXO has a jumping problem

Re: [time-nuts] Odd FTS 4060 Behavior

and down with a sharp maximum at every third scan when the tuning voltage has reached its maximum. Thus, it seems like the OCXO is the culprit. Adrian ewkeh...@aol.com schrieb: If it is always stable at 5x500.32 and has the lock light on than it has to be in the PLL. Bert Kehren In a message

Re: [time-nuts] Odd FTS 4060 Behavior

it, the tuning voltage is almost exactly at center scale!), and we shall see if it behaves or not. Adrian John Miles schrieb: Sounds like the OCXO has a jumping problem, going too far out of range for the CS loop to correct. Have you watched it for a long period of time with the loop turned off

Re: [time-nuts] Odd FTS 4060 Behavior

cover, but stabilized quickly after again. Now I'm in need of more counter resolution than the 1E-11 last digit of my 53131A Adrian ewkeh...@aol.com schrieb: Adrian, maybe I missed something which oscillator does your unit have? Bert -Original Message- From: Adrianrfn

Re: [time-nuts] My stubborn Z3801A

Stop Bits 1 Parity Odd Flow Control None Hope that helps. Adrian Robert Benward schrieb: To All, An update to my Z3801A saga. Summary: As you know, I purchased this Z3801A at the Dayton Hamfest. The person who sold it to me said it was modified for RS-232. I powered the unit up and the only

Re: [time-nuts] My stubborn Z3801A

It's in the same menu where you start / stop communication, just below the 'Port Open' command. CommPort Settings Baud Rate Adrian Robert Benward schrieb: The minimum voltage is +/-3 volts, I'm getting about +/-6 right now. How does one change the serial port speed, I don't see anything

Re: [time-nuts] Odd FTS 4060 Behavior

on and no signs of instability. Adrian Magnus Danielson schrieb: On 06/14/2010 05:45 AM, Glenn Little WB4UIV wrote: This is known as gold embrittlement. The gold has to be removed before a good solder connection is made. To remove the gold, tin the gold plated area. Desolder the tinning. Retin

Re: [time-nuts] My stubborn Z3801A

be established, and the main form should begin to periodically update every few seconds. Shoot me a PM if you don't have the manual. Btw. I've now installed Ulrich's superb Z38XX that is much more versatile than the basic SatStat. Adrian Robert Benward schrieb: Adrian, I thought

Re: [time-nuts] Galvanic decoupling of GPS antenna

So you're having something like that in mind? http://www.polytron.de/Produkte/G07.pdf 4...2400 MHz / 1000V Yuri Ostry schrieb: Hello, Thursday, June 17, 2010, 2:44:43, Didier Juges wrote: D It is not clear to me why the antenna should be isolated from the D receiver, I would prefer to keep

Re: [time-nuts] Odd FTS 4060 Behavior - Update

Thanks to your assistance that inspired me to to take the 1000B OCXO apart, the FTS 4060 is now living happily in my frequency/time rack. Call this a good day! Adrian Stanley Reynolds schrieb: Pictures of 1000b dissembled here: http://www.n4iqt.com/fts1000b/pictures/ Believe it is similar

Re: [time-nuts] (no subject)

Bob, guess you know that detailed documentaion is available here: http://www.prc68.com/I/HPE1938.shtml http://www.leapsecond.com/museum/e1938a/ Open the can and report back! Adrian Robert Benward schrieb: All, Anybody out there know how to fix an E1938 oscillator? Something in the metal can

Re: [time-nuts] FRS-C TTL / sine outboard filter question

a coupling cap to remove the DC component. Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

Re: [time-nuts] Which Rubidium to Get?

Brent, aside of the small and inexpensive module boxes, how 'bout a HP 5065A or a Rohde Schwarz XSRM? Both provide a lot more fun :) Adrian Brent Gordon schrieb: I'm considering buying a rubidium standard, not that I really need one, just because I'm a Time Nut. I have some questions

Re: [time-nuts] Phase noise measurement (was - no subject)

as the VCXO alone. Also keep the power supply contribution into account that can be surprisingly high. And, the PN of most frequency standards is significantly lower than what you can measure with any spectrum analyzer with PN measurement software (except for the RS FSUP of course). Adrian

Re: [time-nuts] Phase noise measurement (was - no subject)

needs it has way too much gain and +5 dBm 1 dB compression makes it completely useless for PN measurement purposes. Adrian Rick Karlquist schrieb: It is good that you asked this FAQ. Basically, what is magic about the AMC-123 is that it has certifiably low phase noise, guaranteed by design

Re: [time-nuts] Frequency counters

+1 on the 5315 / 5316A/B. 5316's come with HPIB. Both can be surprisingly cheap, and, they have no fan. Adrian Robert Atkinson schrieb: Hi Stephen, I assume from the callsign that you are in the UK. You could do worse than to buy a used HP 5316A for £75 from Stewart of Reading http

Re: [time-nuts] Phase noise measurement (was - no subject)

It's still being made by Tyco / MaCOM: http://www.macomtech.com/datasheets/AM-123_AMC-123.pdf Adrian Mark J. Blair schrieb: On Aug 20, 2010, at 3:41 PM, Rick Karlquist wrote: It might still be available through Tyco/MAcom. They have continued to make selected Anzac components

Re: [time-nuts] Phase noise measurement (was - no subject)

and 432 MHz. Adrian Mark J. Blair schrieb: On Aug 21, 2010, at 12:10 PM, Adrian wrote: It's still being made by Tyco / MaCOM: http://www.macomtech.com/datasheets/AM-123_AMC-123.pdf Thanks! According to Avnet (the only one of their US distributors where I found a price posted

Re: [time-nuts] Bulletin Board / Forum

, it boils down to the one question: What is your motivation to start a new board? Adrian Stanley Reynolds schrieb: Started setting up a time-nuts board at: http://forums.n4iqt.com/modules.php?name=Forums Need ideas for topics. Stanley ___ time-nuts

Re: [time-nuts] Timing Distribution in Mountainous Terrain

to sync them through a reliable and reproduceable link. Just a quick shot though. Adrian Ralph Smith schrieb: We have a requirement for approximately ten radio sites to be synchronized to within 30 ns of each other. Ordinarily you could throw in an appropriate GPSDO and be done with it. However, we

Re: [time-nuts] Allan Variance

Martyn, check this: http://www.wriley.com/ Regards, Adrian Martyn Smith schrieb: Hello, Can anyone recommend software to calulate the Allan varaince from a set of data? I have taken many measurements with the SR620 using it's 500 second gate and downloaded the results into Excel. I

Re: [time-nuts] HP58504A antenna

picture), Source is the left terminal, drain the upper one. Also check voltages at the output MMIC (6 pin device). Check input (lower left) and output (upper right) as well as the supply pin (lower right), plus the actual voltage that is coming in from the output coax cable, and report back. Adrian

Re: [time-nuts] Efratom model identification

John, I don't have mine at hands to cross-check if I'm right, but you probably have a Ball Efratom / Symmetricom FRS. Adrian John Simmons schrieb: I have what I believe to be a rubidium frequency reference made by Efratom. Research with Google has not helped me find info on using

Re: [time-nuts] HP58504A antenna

a single device from a supplyer... ...or try it here: http://www.msc-ge.com/frame/d/wir/inhalt_hig.html ... they are also in Madrid and in Barcelona :-) http://www.msc-ge.com/frame/d/wir/inhalt_hig.html How sounds that? Adrian Jose Manuel schrieb: Thank you very much Bruce and all who replied my

Re: [time-nuts] LPRO-101 internals

are or aren't useful for your task. It should also show most of the functionality of the trim pots. That way, without having turned any pots, you'll have learned a lot about how the unit works, and that should be quite helpful for troubleshooting. Adrian Mark Sims schrieb: The rubidium lamp

Re: [time-nuts] Oh the horror

sounds like an interesting parts unit... ;) Jim Palfreyman schrieb: Only this group will understand and suffer with this news... Our observatory has recently had three Russian hydrogen masers arrive (along with some Russians to install them). It turns out that one of the masers had a rough

Re: [time-nuts] +12 Volts 1A (plus a bit) supply?

the ripple on the unregulated side. You may use a smaller capacitor, just large enough for not getting below the minimum regulator input voltage at the lowest momentary voltage across the cap when your wall voltage is at its low spec side... Adrian Bob Stewart schrieb: The transformer gives me

Re: [time-nuts] Z3801 replacement

How about using the 10811 from your broken Z3801A? Adrian Jim Sanford schrieb: Bob: Thanks. You correctly anticipated that I will use this to lock a 100 MHz Oscillator, and either multiply or lock from there. (I'm considering a VCXO at 1GHz as well, it would either be locked to 100 MHz

Re: [time-nuts] HP E1938A Oscillator

diagram. Regards, Adrian Graham / KE9H schrieb: On 7/5/2013 12:23 AM, Perry Sandeen wrote: List, I was looking on Ebay for some HP E1938A oscillators What I found listed were: HP E1938A 10 MHz Quartz Oscillator with EFC on PC board. $100 Fluke.l HP E1938-60201 Ovenized Crystal

Re: [time-nuts] HP 5370B Leds pulsing slowly, buttons selecting normally, PB LEDS scannning and appears to be reading o/k

sounds quite typical for a dried out electrolytic cap. Look for the unregulated -10V that goes into the regulator circuit. Most likely C3 on the power supply motherboard is dead. Adrian Mark C. Stephens schrieb: Checked the PSU voltages on the PSU card next to the 10811. The -5.2 is reading

Re: [time-nuts] HP 5370B Leds pulsing slowly, buttons selecting normally, PB ...

for the cap to loosen... ;) Adrian Mark C. Stephens schrieb: Hi Nigel, The only screw type electro can find is 29000uf@10V. it's the same dimensions. Should I risk the strain on the rectifiers (another 10Kuf is rather a lot)? Without this timer I am dead in the water so I need to do the right

Re: [time-nuts] Wavecrest DTS-2077 Teardown

Ed, thanks for posting! I'm still looking for a MUX board for my faulty 2077. Is there anyone using a DTS-207x with TimeLab? Adrian Ed Palmer schrieb: FYI, I did a teardown on my Wavecrest DTS-2077. It's posted here: http://www.eevblog.com/forum/testgear/wavecrest-dts-2077-teardown Ed

Re: [time-nuts] Wawecrest DTS-2077 with TimeLab: was: Wavecrest DTS-2077 Teardown

To be more precise, I have a working DTS-2077 and tried it a few times with TimeLab. TimeLab was always running fine for a few seconds but then it stopped and displayed a timeout error. So, what's wrong? Adrian Adrian schrieb: Ed, thanks for posting! I'm still looking for a MUX board

Re: [time-nuts] Wawecrest DTS-2077 with TimeLab: was: Wavecrest DTS-2077 Teardown

John, I'm using a NI GBIP-USB-B. The monitor feature does not time out, just the acquisition itself. Adrian John Miles schrieb: What GPIB adapter are you using? Does the 'Monitor' feature also time out, or just the acquisition itself? -- john, KE5FX Miles Design LLC -Original Message

Re: [time-nuts] Wawecrest DTS-2077 with TimeLab: was: Wavecrest DTS-2077 Teardown

worse. Sometimes it times already out while establishing GPIB connection. Best case it runs up to tau = some 3 seconds. I've never observed the monitor function timing out. Adrian John Miles schrieb: Hmm. Both the monitor window and acquisition loop use 5-second GPIB timeouts, so they should

Re: [time-nuts] HP3048 RMB software

David, it isn't even secret, just a stash of A03.02 bits 'n bytes. Shoot me a PM. Adrian David Hooke schrieb: Hi Folks, This is from the June 1990 version of the HP 3048A System Ops manual: Does anyone have a secret stash of the RMB A.03.0x version? BTW, I now have a fully operational

[time-nuts] HP 5061A Problem

modulation index. So far, everything seems to work properly except for the missing 2nd harmonic and the unusual beam curren behavior. Any help would be much appreciated. Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] HP 5061A Problem

operation outputs on the rear, and a A5 time delay divider. There is no clock. Thanks, Adrian cdel...@juno.com schrieb: Adrian, Most used High stability tubes are DOA but you might get lucky! You say the low frequency test worked. What was the amplitude of the peak in nanoamps and was the peak well

Re: [time-nuts] Fw: FTS 4060 Cesium Time Frequency Standard, Datum

I see you already have the user manual, but here it is: http://www.to-way.com/tf/4060man.pdf And Brooke's 4060 site: http://www.prc68.com/I/FTS4060.shtml Adrian J. L. Trantham schrieb: Suspicious for a dead tube. Joe -Original Message- From: time-nuts-boun...@febo.com [mailto:time

Re: [time-nuts] HP 5061A Problem

parts of the control loop. Adrian cdel...@juno.com schrieb: Adrian, Most used High stability tubes are DOA but you might get lucky! You say the low frequency test worked. What was the amplitude of the peak in nanoamps and was the peak well above the noise or baseline level? Once you were

Re: [time-nuts] HP 5061A problem

, the control voltage shows only a small jump and goes slowly back to the initial value. That's not exactly what I expect from an integrator. Adrian cdel...@juno.com schrieb: Adrian, You say it does not lock. When you put in operate and push the logic reset button does the green light come

Re: [time-nuts] HP 5061A problem

, the response to fine adjust changes was very slow. So, at least the basics are there and I should be able to get it running if I find the correct OPamp. Adrian cdel...@juno.com schrieb: Adrian, You say it does not lock. When you put in operate and push the logic reset button does the green light

[time-nuts] Femtosecond Systems Phase Nosie Stuff

do know how to operate the FSSM100 manually, but there is an interface connector on the rear that might be useful. Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Re: [time-nuts] Off-Topic Question -- German Composition Resistors

Hi Bruce, no. Same color code here. However, certain carbon composition resistors from the 60's/70's are notoriously unreliable. The common effect is drift to significantly higher values. Besides that, they can get pretty noisy. Adrian brucekar...@aol.com schrieb: While tracing out a PC

Re: [time-nuts] Simulation of oscillator noise

-publications.html Best regards, Adrian Wolfgang Wallner schrieb: Hello Time-Nuts community, I'm interested in the simulation of oscillator noise (especially in discrete event simulators). I came across this topic as part of the literature research for my master's thesis, and have to admit

[time-nuts] W. Riley's Small DMTD System

and DDS together with a HP 53131A in TI mode with TimeLab. There are a couple of questions that are probably easy to answer by someone who has built that system. Any hints would be much appreciated. Adrian ___ time-nuts mailing list -- time-nuts

[time-nuts] Agilent 53230A Counter

? Adrian ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

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