Re: [time-nuts] 5950 Crystal impedance meter manual

Hi Regarding the manuals, I must look in my paper archive. I remember to have two manuals of two types of those "old test sets". I have even one of the test sets in my "museum". It will take a while to dig, as I am going to travel for 10 days. I will come back after that. Regards Bernd

Re: [time-nuts] 5950 Crystal impedance meter manual

Hello, on the website of my company you can find a list of papers on the subject of crystal measurement techniques. http://www.axtal.com/English/TechnicalNotes/TechnicalArticlesPublications/LiteratureaboutQuartzCrystals/ The actual standard procedure for crystal measurement is by using modern

Re: [time-nuts] Suggest time-and-tech related locations in Switzerland

Hi Dave, the center of the Swiss watch & crystal industry is the small town of Grenchen, location of many famous watch makers including the SMH group which includes Microcrystal, previously also Oscilloquartz, and the following wathc brands: Prestige and Luxury: Breguet (CH)

Re: [time-nuts] Atomic clocks and Wassenaar agreement

Hi Attila, the paragraph applies also to low phase noise crystal oscillators. The limiting equation for phase noise stated in that section 3. A. 1. b. 10 reads as follows: L(F) > -(126+20log10F-20log10f) for 10 Hz ≤ F ≤ 10 kHz With f being the carrier frequency in MHz and F the offset in Hz In

Re: [time-nuts] Quartz Crystal Motional Movement

Bob Camp: >Every paper I have ever read on the intrinsic Q of quartz makes the claim that >Q * F is a constant ( Q goes up as frequency goes down). Unless blank >diameter gets in the way, this has been true for any >crystals I have ever >used. Q does change as overtone changes, but that is not

Re: [time-nuts] One sure way to kill your FE-5680A or FE-5650A

The same problem may appear on some poorly designed crystal oscillators. Some circuits depend on the spectral component of a fast power-on and will not start reliably if the supply voltage is ramped slowly - as can happen if the oscillator stage is fed by a voltage regulator with high value

Re: [time-nuts] How to get unknown frequency quartz crystals oscillating

Tim Shoppa wrote: >The Pierce logic-gate-biased-active oscillator is pretty reliable to start and >will oscillate somewhere with most crystals from kHz to MHz. >As you found out, it will often come up on one of many overtones. >To reduce chance of coming at an overtone, a series resistor from

Re: [time-nuts] How can I generate a very clean 1 W signal @ 116 MHz ?

Alexander Pummer wrote on Montag, 30. Mai 2016 16:25 >KVG Neckarbischofshofen used to have a crystal in a glass envelope, which was >made just for that purpose it was third overtone crystal ask Bernd if that is >still available, of course you would need a low noise power amplifier to get

Re: [time-nuts] Simple solution for disciplining OCXO with 1 PPS

Hi fellow time-nuts, sorry for keeping quiet after having dropped my question. I was busy travelling an since yesterday our booth at the IMS2016/MTT keeps me busy too. I will answer to the various comments as soon as I got some more quiet minutes. I look forward to see many time-nuts this

[time-nuts] Simple solution for disciplining OCXO with 1 PPS

Hello Fellow time-nuts, I am looking for a simple solution to discipline my 10 MHz reference OCXO in my private lab with an 1 PPS signal from a separate GPS receiver. I am curious if there is a solution possible without programming a microcontroller, as I am an old-fashioned "analogue" guy ;) I

Re: [time-nuts] Get together at IMS?

com> Betreff: Re: [time-nuts] Get together at IMS? I think this makes it real easy, let's meet at Bernd's booth at 5 p.m. on Wednesday. Bring friends. On Sat, May 21, 2016 at 3:46 AM, Bernd Neubig <bneu...@t-online.de> wrote: > I will attend the IMS from Tuesday through Thursday

Re: [time-nuts] Get together at IMS?

I will attend the IMS from Tuesday through Thursday noon time. Most time I will be at booth 714 (Dynamic Engineers). Good proposal to meet at the Industry reception on Wednesday. Please come up with a proposal for the meeting point, as the hall is big. Best regards Bernd DK1AG

Re: [time-nuts] 2016 W.G. Cady award

Thank you for the congratulations. I am very pleased to have received this prestigious award named after Walter G. Cady, the guy who has built the first crystal oscillator in 1921. Bernd Neubig -Ursprüngliche Nachricht- Von: time-nuts [mailto:time-nuts-boun...@febo.com] Im Auftrag von

Re: [time-nuts] IFCS 2016 in New Orleans

I will be I will arrive on Monday late afternoon. Looking forward to meeting you and other Time Nuts soon Bernd Neubig - DK1AG AXTAL GmbH & CO. KG -Ursprüngliche Nachricht- Von: time-nuts [mailto:time-nuts-boun...@febo.com] Im Auftrag von Magnus Danielson Gesendet: Sonntag, 8.

Re: [time-nuts] Glass Envelope Quartz Crystals

Von: time-nuts [mailto:time-nuts-boun...@febo.com] Im Auftrag von Bob Camp Gesendet: Mittwoch, 3. Februar 2016 13:12 >There likely are long stories that explain just why this or that package got >used in this or that application. The historical reasons for this type of package is more

Re: [time-nuts] Looking for paper "Theory and Properties of Piezoelectric Resonators and Waves"

Hello Attila, I do have the book. Sorry, but I have no time to scan the pages. Please call me in the QRL Viele Grüße Bernd DK1AG AXTAL GmbH & Co. KG -Ursprüngliche Nachricht- Von: time-nuts [mailto:time-nuts-boun...@febo.com] Im Auftrag von Attila Kinali Gesendet: Dienstag, 2.

Re: [time-nuts] 8th Symposium on Frequency Standards and Metrology

Hi Magnus, I had planned to attend and had even submitted a poster, which was accepted. However due to time constraints I had to cancel my trip. Have a nice stay. Best regards Bernd DK1AG AXTAL GmbH & Co. KG BTW: If you have spare time and we can find a time slot from our side, you would be

Re: [time-nuts] Vintage Crystal Oven

I have a few similar thermostats, which were sold in the 70ies by KVG Germany under their P/N XT-1. The manufacturer was Northern Engineering. The oven comprises an Octal type tube socket, in the interior there are two sockets for two HC-6/U style crystals. The temperature control is by a

Re: [time-nuts] OCXO Voltage Input? (Bob Camp)

03:27 PM, Bernd Neubig wrote: Hi Bob, your description oft he spurious coming from higher overtone of low-frequency modes is correct. I want to add, that all thickness-shear mode crystals (such as AT, BT and SC-cut) have so-called an-harmonic spurious modes, which is a whole ensemble

Re: [time-nuts] OCXO Voltage Input? (Bob Camp)

Hi Bob, your description oft he spurious coming from higher overtone of low-frequency modes is correct. I want to add, that all thickness-shear mode crystals (such as AT, BT and SC-cut) have so-called an-harmonic spurious modes, which is a whole ensemble of spurs located slightly above above

Re: [time-nuts] temperature sensor

:21:49 +0200 Bernd Neubig bneu...@t-online.de wrote: the time-nut approach for temperature measurement would be to use a temperature sensor crystal - like the good old Hewlett-Packard guys did many years ago. If you do not look for ultra-linearity of the frequency vs. temp response

Re: [time-nuts] temperature sensor

are sensing. The thermal resistance in that case is essentially zero. Bob On Jul 19, 2014, at 7:45 AM, Attila Kinali att...@kinali.ch wrote: On Wed, 25 Jun 2014 14:21:49 +0200 Bernd Neubig bneu...@t-online.de wrote: the time-nut approach for temperature measurement would be to use a temperature

Re: [time-nuts] temperature sensor

SAW instead of BAW. Do you know of any commercial quartz crystals (say, in the $1 to $10 range) that have been optimized for large tempco at room temperature? Or optimized for linearity over a large range (e.g., -40 to +40 C)? As Bernd Neubig mentioned, Axtal has some: http://www.axtal.com

Re: [time-nuts] temperature sensor

Hi, the time-nut approach for temperature measurement would be to use a temperature sensor crystal - like the good old Hewlett-Packard guys did many years ago. If you do not look for ultra-linearity of the frequency vs. temp response, there are several possible types of crystal cuts possible.

Re: [time-nuts] Morion MV89 and LTC6957

Hi Attila, Unfortunately, since they redesigned their webpages, i cannot find the OCXOs listed anywhere anymore (only the 8607 shows up). Oscilloquartz has discontinued their OCXO line. The only exception is the BVA OCXO. Best regards Bernd DK1AG www.axtal.com -Ursprüngliche

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

. Regards Bernd Neubig DK1AG www.axtal.com -Ursprüngliche Nachricht- Von: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] Im Auftrag von Max Robinson Gesendet: Freitag, 8. März 2013 04:19 An: Discussion of precise time and frequency measurement Betreff: Re: [time-nuts

Re: [time-nuts] What cut do I have?

Hi, IT and FC cut crystals are not very often used in OCXO. But if, then the lower turn point is used (below the inflection temperature), which means that the cold oven starts at a lower frequency, which increases with warm-up - same direction as for SC-cut crystals. Regards Bernd DK1AG

Re: [time-nuts] What cut do I have?

down as it warms up. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bernd Neubig Sent: Monday, January 28, 2013 11:48 AM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] What cut do I have? Hi

Re: [time-nuts] 12.8 MHz OCXO

Hi Joe, I can offer you from our stock at AXTAL the following excellent: - OCXO 12.8 MHz in 20x20 mm package HCMOS, 5 V, stability +-10 ppb, as our AXIOM30-50-10, but with reference voltage output of 4 V (instead of 3 V). Frequency can be tuned by using the VREF. See www.axtal.com for details

Re: [time-nuts] HP/Agilet counter 53131A (not 53151A) trigger problems

or the Oscilloquartz 8663 to implement a Kalman filter. On Fri, Aug 24, 2012 at 3:34 PM, Bernd Neubig bneu...@t-online.de wrote: Hi all, I have several HP/Agilent frequency counters 53151A (and 53152A) in my lab. Several of them meanwhile show trigger problems. I have tested the A and B channel

[time-nuts] HP/Agilet counter 53151A trigger problems

Hi all, I have several HP/Agilent frequency counters 53151A (and 53152A) in my lab. Several of them meanwhile show trigger problems. I have tested the A and B channel between 5 MHz and 200 MHZ at three input levels of -10 dBm, 0 dBm and +10 dBm. Those with trigger problems show erroneous

Re: [time-nuts] OT: The tick-tock of the optical clock ....

Hi David, very similar work was done at PTB in Germany http://www.ptb.de/en/aktuelles/archiv/presseinfos/pi2012/pitext/pi120301.html ... the charm of forbidden things... Best regards Bernd Neubig AXTAL GmbH Co. KG www.axtal.com - Original Message - From: David J Taylor david-tay

Re: [time-nuts] OT: The tick-tock of the optical clock ....

of forbidden things... Best regards Bernd Neubig Danke, David -- SatSignal software - quality software written to your requirements Web: http://www.satsignal.eu Email: david-tay...@blueyonder.co.uk ___ time-nuts mailing list -- time-nuts@febo.com

[time-nuts] Fw: WG: Tele Quarz Group OCXO

Hi Detlef, this item is not an OCXO but a TCXO. Accoding to my memory the stability is +-0.3 ppm over about 0°C to +50°C, it has 5 V supply and a CMOS/TTL output You can see the pin connections in the attachment (Option E). The trimmer is 20 kOhm. I wish you much fun with the part. Best

Re: [time-nuts] need example frequency vs temp equation

Hi Jim, There are different types of TCXO compensation techniques on the market. Each of them generating a different style of f(T) characterisitcs. Furthermore the f(T) response varies from unit to unit, because each TCXO is usually uindividually compensated (or sometimes in groups of similar

Re: [time-nuts] OT: leaching was, Alternative time interval interpolation technique

in the range of seconds and up, that's correct. However OCXO are usually using higher-Q crystals (overtones, often SC-cuts), while VCXO, TCXO and clocks are mostly using fundamental mode or low overtone crystals. Bernd Neubig, DK1AG ___ time-nuts mailing list

Re: [time-nuts] OT: leaching was, Alternative time interval interpolation technique

too ;-) Regards Bernd Neubig DK1AG ___ 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.