Re: [time-nuts] X72 and 1pps

Hi Mark, thanks for your reply. Try enabling the PPS input form the "P menu. I can´t find this option - I can toggle the PPS output, but not the input. BTW, what´s the "set TIC" option? I can enter a number here, but I can´t find something about this command in the manual... &a Auto-Tune s

[time-nuts] X72 and 1pps

Hello Time-Nuts, thanks to Mark´s breakout board I was able to fire up my X72 rubidium. It seems to work fine. FW is 5.19. As far as I understand from the (rather crappy) manual, I should be able to discipline it to 1pps, but I wasn´t lucky using the commands from the manual. I switched t

[time-nuts] Stable32 now available

Dear Time-Nuts, Happy New Year! Maybe this is of interest for some of you: A copy of Stable32 was on my wish-list for Christmas and I asked for the possibility of a non-profit-license. Bill Riley informed me that he donated Stable32 to IEEE UFFC and it will be available for free download wit

[time-nuts] LPFRS phase ripple: success!

recommend this to every owner of a used LPFRS - it takes about 10 minutes. Thanks again for all the hints and have a nice weekend, Matthias Am 25.05.2017 um 12:46 schrieb Bob kb8tq: Hi On May 25, 2017, at 4:12 AM, Matthias Jelen wrote: Hi Angus, thanks for the hint. I read through this fairly

Re: [time-nuts] LPFRS phase ripple?

oscillator amplitude stability (also a lamp!) Tim N3QE On May 23, 2017, at 3:40 AM, Matthias Jelen wrote: Hello Time-Nuts, i´ve been playing with some Rbs recently. I compared two LPFRS-01 to a PRS-10. One seems to behave quite well (compared to the specs given here: http://www.spectratime.com

Re: [time-nuts] LPFRS phase ripple?

Hi Angus, thanks for the hint. I read through this fairly long thread - the baseline seems to be: Replace the caps. Best regards, Matthias Am 23.05.2017 um 21:44 schrieb Angus: Hi, If you've not already looked, it would be worth checking on the EEVblog since there were some discussions the

[time-nuts] LPFRS phase ripple?

Hello Time-Nuts, i´ve been playing with some Rbs recently. I compared two LPFRS-01 to a PRS-10. One seems to behave quite well (compared to the specs given here: http://www.spectratime.com/uploads/documents/isource/iSource_LPFRS%20Spec.pdf) - short term stability specs are met), the other one

Re: [time-nuts] Knights OCXO: Now in plain text...

Le 8 déc. 2016 à 10:40, Matthias Jelen a écrit : > > Hello! > > 3rd try, I was using a webmailer which changed it defaults to html. Thanks > for the hint Mike! > > I got an OCXO from a piece of scrapped Agilent equipment. > > The OCXO has a label on it saying: > >

[time-nuts] Knights OCXO: Now in plain text...

Hello!   3rd try, I was using a webmailer which changed it defaults to html. Thanks for the hint Mike!   I got an OCXO from a piece of scrapped Agilent equipment.   The OCXO has a label on it saying:   CTS KNIGHTS 970-2123-2 10.000 MHz 08924-61037   The OCXO has four wires and an RF-Connector, so

[time-nuts] 2nd try: Info on Knights OCXO

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[time-nuts] Info on KNIGHTS OCXO?

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Re: [time-nuts] 82357b and TimeLab?

Hello John, thanks, that did the trick - it´s working flawless now! Regards, Matthias, DK4YJ Am 28.06.2016 um 00:32 schrieb John Miles: But TimeLab doesn´t list any GPIB interfaces. Did anyone have success with this combination? Any insights highly appreciated... Agilent's NI488.2 compatibi

[time-nuts] 82357b and TimeLab?

Hello Time-Nuts, I got an Agilent 82357b USB <-> IEC-Bus adaptor at a ham fest. Now I´m trying to get it to work with TimeLab. I Installed some hundred MB of Keysight software and followed the recipes I found in the web to get the 82357b working with 488.2 applications - basically checking "

[time-nuts] 5370A Trigger

Hello Time-Nuts, once again a question to the 5370 experts: After some time of operation (hours...) my 5370A starts to become noisy. This can be seen best when teeing the 10 MHz REF OUT to IN A nnd IN B, choosing TI and setting STD DEV, 1k samples. When everything works well, the displayed va

Re: [time-nuts] The Symmetricom GPS Antenna's

Hello Time-Nuts, thanks for that hint. Anyone in Europe / Germany interested? I´d be interested in buying some of those - I´d be willing to organize a centralised buying, pick them up at the customs and forward them (if the number stays reasonable :-) Please send me a private message if int

Re: [time-nuts] ADEV measurement question

Tom, thanks for sharing this! This was exactly what I was looking for. Regards, Matthias Am 23.08.2015 um 19:19 schrieb Tom Van Baak: To learn more, I think the best way would be to put the counter into its fast binary mode and acquire 1k time interval samples per second. That would give me l

Re: [time-nuts] KS-24361 EFC Error

Hi Gerhard, many thanks for sharing this. I replaced the OCXO in my REF-1, and now it´s working again. Nice to see that I still can use the old OCXO with negative tuning voltage. Regards, Matthias, DK4YJ Am 12.08.2015 um 19:13 schrieb Dave M: I have verified with MTI that the recommended t

Re: [time-nuts] ADEV measurement question

ould give me loads of data to play with and it would be easy to try out how different averaging schemes affect the result. I´ll have to read and think some more :-) Cheers, Matthias Am 19.08.2015 um 21:52 schrieb Magnus Danielson: Dear Mathias, On 08/19/2015 06:40 PM, Matthias Jelen w

[time-nuts] ADEV measurement question

Hello, I´ve got a question concerning ADEV-measurements. I´m measuring the 15 MHz output of a KS-24361 with my SR-620 with it´s internal (Wenzel) OCXO using Timelab. For the first shot I used the counters frequency mode with 1s gatetime. ADEV at tau=1s turned out to be arounf 2E-11, which fi

[time-nuts] KS-24361 EFC Error

Hello Time-Nuts, I have a RFTG-U REF-0 / REF-1 pair here which seems to have a problem. The error LED of the REF-1 box stays on forever, and Ulrichs SW reports an EFC Error. After OCXO warmup, the EFC goes doen to it´s lower rail (-100 %) and stays there forever. Indeed the 5 MHz Output from

Re: [time-nuts] Thunderbolt issue found

Chris, did you allready get your photos? If not, I can open up mine tonight and see if I can make some shots under the microscope... 73, Matthias, DK4YJ Hi Everyone, Thanks for the suggestions this past weekend for helping get my new Thunderbolt fixed. I got back into town last night lat

Re: [time-nuts] KS-24361 REF-0 standalone

Hi Bob, I also grabbed some of the KS-24361 pairs and retrieved a lot of information from the mailng list archive. If you have more results from the reverse engineering which was already done, I´d also be very interested. Thanks, Matthias Hi You need to get the Oncore running with the c

Re: [time-nuts] HP 5370a

. Other coax delays are used in the oscillator turnoff and mixer logic. But there are all kinds of gates to control the system and Flip Flop used as a mixer. Not easy to deal with. Regards Paul. On Sat, Jul 4, 2015 at 1:44 PM, Matthias Jelen wrote: Dear Time-Nuts, I´m still struggling to get my

[time-nuts] HP 5370a

Dear Time-Nuts, I´m still struggling to get my 5370A to work reliable again. It keeps showing error 04. Sometimes it is working without any problems for hours, sometimes it´s a matter of minutes until the error is displayed, and sometimes I doesn´t come up without the error at all. I don´t

[time-nuts] SR-620 noise floor question

Dear Time-Nuts, I played around with my SR-620 counter and TimeLab and got strange ADEV curves, so I started to investigate a bit. The SR-620 is equipped with Option 1, the high performance Wenzel OCXO - specified with 5E-12 at tau = 1s. I tried to evaluate the counters noisefloor. I fed 10 M

Re: [time-nuts] HP5370 Error 04

x27;t running, which resulted in overheating. I hope this helps. Regards, John K1AE -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Matthias Jelen Sent: Monday, June 08, 2015 9:28 AM To: time-nuts@febo.com; dk...@gmx.de Subject: [time-nuts] HP5370 Err

[time-nuts] HP5370 Error 04

Hello!   I´ve got a question to the 5370 experts on the list.   I just received my new (old...) HP5370a. It performed fine for abt. one hour, then it started to display error 04 which means "PLL out of lock".   A look in the service manual revealed that there are several reasons for this. I chec

Re: [time-nuts] GPS week rollover

Hi Pete, I didn´t test the transition - I just entered a few dates well after the rollover. After locking, the phase of the 10 MHz output was stable against the phase of the 10 MHz REF out of the signal generator I used for testing, which was what I expected. The 1 PPS looked "reasonable".

Re: [time-nuts] Thunderbolt Rollover

(who wrote LH, and is on the list) to add the 936 week offset back into the timestamps for dates after July 2017. /tvb - Original Message ----- From: "Matthias Jelen" To: Sent: Tuesday, September 16, 2014 12:06 PM Subject: [time-nuts] Thunderbolt Rollover Hello, I got a Trimb

[time-nuts] Thunderbolt Rollover

Hello, I got a Trimble Thunderbolt a few months ago and implemented a simple monitor on a MCU to display time, no of satellites etc. on a lcd display. While working on this, I found the hint for the upcoming rollover in 2017 in the user manual. I couldn?t find any details on this in the intern

[time-nuts] Thunderbolt Rollover

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