Re: [time-nuts] 82357B GPIB USB from China
On Tue, 10 Sep 2013 20:04:05 +, cfo wrote: I have 2 firmware types , an i2c eeprom image , and an uploadable firmware (like the real Agilent). Ohh just to elaborate ... I use linux-gpib from SVN (under Debian-7 and Mint-14) and I got a new test firmware from Beiming (not released yet) The Beiming didn't work with the Agilent firmware from linux-gpib site. So they made one that would behave like the one from Agilent under linux. It seems like linux-gpib has just been updated to Ver 3.18 The linux-gpib support of the Beiming USB GPIB Adapters is now official. *Bay S82357 or F82357 (DMA) I have used it with my HP 6632B PSU , and also the HP 3478A meter. CFO ___ 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] Interesting idea
On Wed, Oct 9, 2013 at 1:17 AM, Paul K. hgl...@frii.com wrote: NASA spacecraft Juno, bound for Jupiter, will have a earth fly-by Wednesday this week. NASA asks all Hams for help with a experiment: http://www.jpl.asa.gov/hijuno/ Minor typo: http://www.jpl.nasa.gov/hijuno/ -- Sanjeev Gupta +65 98551208 http://www.linkedin.com/in/ghane ___ 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 5061A Problem
Corby, the frequency test performed yesterday as follows: - Peak Frequency 38.78 kHz at 1V eff - EM Output connected directly to a 34401A - measured -102 mV (10.2 nA) - Peak Frequency 38.78 kHz at 2V eff - EM Output connected directly to a 34401A - measured -133 mV (13.3 nA) - Audio Signal off - EM Output connected directly to a 34401A - measured -59 mV (5.9 nA) Corresponding circuit check meter readings when EM output is connected to A7 J1: - 36 - 46 - 24 That was measured with A11 mass spectrometer fully cw. There is no peak when adjusting the pot, the max. is always in the full cw position. There was still no 2nd harmonic though because the A7 input amp was shot. I couldn't find the 1854-0023 in the xref, so I replaced them with BC546B's. This worked until I reconnected the EM output to the amp. Apparently the EM charges up to a high negative potential while unconnected. When it is reconnected to A7, the negative voltage peak instantly shoots the input transistor. Touching the open connector with a scope probe shows a negative voltage transient of several hundred volts. When it is connected to the amp, there are only -8mV across the 1M input resistor R10. So there appears to be a very high resistance path between the EM and high voltage inside the tube. This explains also why the meter is displaying beam current immediately after applying power to the 5061A. Well, with a new transistor and avoiding the discharge scenario, I was finally able to get a 2nd harmonic that could be peaked with osc. coarse, A3 mod and A4. The noisy 2nd harmonic signal is present at A8 J1. So far it looks all good except for the EM problem that appears to be acceptable. At least the hope is still alive. The unit didn't yet lock, so I will have to check the other 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 on the peak did you adjust the 41.6Khz amplitude to max the signal? Once on the peak you can adjust the mass spec pot on the top of A11 to peak it. If the peak was 8na and above noise then the tube appears to be working. Anything below 4 or 5 na the tube is depleted, might be useable but STS will be terrible. If the peak is 8na then reconfigure for normal operation, in open loop mode. Turn the mod on and connect a scope to A8 J1 to observe the phase detector output. Adjust the fine and or coarse oscillator adjustments back and forth across 5Mhz. If you can see any output as you sweep through then set the osc. frequency to peak the signal. Then adjust the A3 mod and the A4 (top pot) to peak the signal. A7 gain will adjust the amplitude. Adj the osc freq. to null the signal (puts you on frequency) and see if you have any 2nd harmonic now. If so go ahead and see if it will lock. Good Luck! Corby ___ 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. ___ 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.
[time-nuts] It's About Time :)
From another list: http://www.youtube.com/watch?v=9CpsPgXyIm8 -John === ___ 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] Interesting idea
Thanks for catching the typo. 10 thumbs--no fingers. PK -- Paul K. WA0BAG ___ 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] TS-2100 gps receiver setup question
Howard, In a September 2008 post by Jason Rabel in reference to converting a TS2100irig to GPS. The original question stated that the GPS always looked busy. Here is his response...I wonder if this will solve your problem? Quote I've successfully converted my TS2100 IRIG to a GPS model along with several other people. As far as I know, the Oncore module was never used (maybe a planned future upgrade), but the ACE-III modules work just fine. The trick is you need to make a temporary interface with your ACE-III and set PORT1 to 9600 8O1 TSIP in, TSIP out. The receiver is probably set to 8N1 right now which is why it's not working. I dug through my old emails and this bit of information might also be useful: TSIPMonitor32 seemed to always (re)set the receiver to 9600-8N1. My workaround was to use the Acutime TR_Monitor (set to the pallisade receiver) to set the baud rate, then run TSIP chat and save the seeprom settings there. You should be able to find all those programs on the Trimble FTP server. No need to mess with any jumpers or eeproms... Just be sure to flash your firmware to the latest version (which is a couple years old at least I think). /Quote -- Gerhard ___ 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.
[time-nuts] HP 5061A problem
Adrian, You say it does not lock. When you put in operate and push the logic reset button does the green light come on? What is the 2nd harmonic meter reading? If too low the logic will not turn on the green light. Raise the reading via the A7 gain adjust thru the front panel hole. Is the green light burnt out? In operate and looking at the control voltage on the meter does the control voltage follow a slow adjustment back and forth of the fine Quartz adjust? Corby ___ 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.
[time-nuts] Question concerning ADEV measurements
Is there a methodological difficulty using the reference clock to also clock a TIC? Specifically, I have a 5370B with the DUT on the start input and a 5065A on both the stop input and the external clock input. Thanks, Bob Darby ___ 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.
[time-nuts] Pendulum CNT91 with TimeLab
Has anybody had any success setting up the Pendulum CNT91, or the Tektronix rebadged equivalent FCA3100, to run with TimeLab? It was suggested here some time ago that it should be possible to achieve this by running the counter in talk only mode but so far I've had no luck with the FCA3100 and am aware of similar problems with the CNT91. I suspect this is more likely a counter issue, or perhaps in my case that should read user issue:-) rather than anything to do with the software. I'm using an NI USB GPIB adapter and can run the FCA3100 with the cut down Tektronix supplied version of NI's Signal Express, but whilst I can also talk to it using NI's Measurement and Automation Explorer any attempts with that to switch it into talk only mode either don't work or perhaps it's reverting as soon as I close the software to switch over to TimeLab. I've also tried running the counter in GPIB compatible mode, where it's claimed to emulate the SCPI command set of the HP 5313x series, but as far as I can tell TimeLab is rejecting the data because it checks for a valid HP ID string whilst the counters still respond as either an FCA3100 or CNT91. Regards Nigel GM8PZR ___ 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.
[time-nuts] TS2100 Firmware
I have just purchased (eBay) a TS2100-IRIG with firmware v3.1. I believe v4.1 is the latest. I requested access to the Symmetricon software download but have not yet been approved. Not sure what criteria they use for approval or if the TS2100 firmware is still on their site. Does anyone have access to the latest firmware file and is willing to send it to me? BTW...Inspired by this mailing list I am hoping to use a Trimble Resolution T to convert this to a GPS unit. -- Gerhard ___ 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] Question concerning ADEV measurements
Not sure if there's anything to worry about, but I don't think there are any good reasons to do it. The OCXO in the 5370 is an order of magnitude more stable from one second to the next than the counter's resolution would allow you to measure at t0=1s. -- john, KE5FX Miles Design LLC -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts- boun...@febo.com] On Behalf Of Robert Darby Sent: Wednesday, October 09, 2013 12:30 PM To: time-nuts@febo.com Subject: [time-nuts] Question concerning ADEV measurements Is there a methodological difficulty using the reference clock to also clock a TIC? Specifically, I have a 5370B with the DUT on the start input and a 5065A on both the stop input and the external clock input. Thanks, Bob Darby ___ 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. ___ 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] Pendulum CNT91 with TimeLab
TimeLab will capture and display the *IDN? result as the instrument name, but it shouldn't reject the connection if it doesn't get what it expects. How is it behaving when it rejects the data? You've got to wonder what was going through the heads of the designers of the various counters that didn't implement talk-only mode. Of all the obvious useful features to leave out... :( -- john, KE5FX Miles Design LLC -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts- boun...@febo.com] On Behalf Of gandal...@aol.com Sent: Wednesday, October 09, 2013 12:32 PM To: time-nuts@febo.com Subject: [time-nuts] Pendulum CNT91 with TimeLab Has anybody had any success setting up the Pendulum CNT91, or the Tektronix rebadged equivalent FCA3100, to run with TimeLab? It was suggested here some time ago that it should be possible to achieve this by running the counter in talk only mode but so far I've had no luck with the FCA3100 and am aware of similar problems with the CNT91. I suspect this is more likely a counter issue, or perhaps in my case that should read user issue:-) rather than anything to do with the software. I'm using an NI USB GPIB adapter and can run the FCA3100 with the cut down Tektronix supplied version of NI's Signal Express, but whilst I can also talk to it using NI's Measurement and Automation Explorer any attempts with that to switch it into talk only mode either don't work or perhaps it's reverting as soon as I close the software to switch over to TimeLab. I've also tried running the counter in GPIB compatible mode, where it's claimed to emulate the SCPI command set of the HP 5313x series, but as far as I can tell TimeLab is rejecting the data because it checks for a valid HP ID string whilst the counters still respond as either an FCA3100 or CNT91. Regards Nigel GM8PZR ___ 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. ___ 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.
[time-nuts] 3-D GPS antenna?
http://www.technologyreview.com/news/519811/a-cure-for-urban-gps-a-3-d-antenna/ ___ 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 5061A problem
Corby, yes, the green light comes on, but when I turn the osc. fine control by more than +/- 30, it goes off. The output frequency changes with the fine adjust, so that narrow range appears more like a pseudo lock indication. I can even unplug A8P6 and the green light is still on. Output from the phase detector is there, but the oscillator control instrument doesn't show any significant move. The 2nd harmonic meter reading is near full scale. I'm suspecting a problem with the OP Amp. It does not work as described in the functional test. And, when I apply DC to the input at A8P6, 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 on? What is the 2nd harmonic meter reading? If too low the logic will not turn on the green light. Raise the reading via the A7 gain adjust thru the front panel hole. Is the green light burnt out? In operate and looking at the control voltage on the meter does the control voltage follow a slow adjustment back and forth of the fine Quartz adjust? Corby ___ 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. ___ 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] Pendulum CNT91 with TimeLab
Hi John, On 10/09/2013 11:48 PM, John Miles wrote: TimeLab will capture and display the *IDN? result as the instrument name, but it shouldn't reject the connection if it doesn't get what it expects. How is it behaving when it rejects the data? You've got to wonder what was going through the heads of the designers of the various counters that didn't implement talk-only mode. Of all the obvious useful features to leave out... :( It was among the features that makes CNT-91 distinguish itself from CNT-90. That is at least what the Pendulum Product Manager said when asked about it. As far as I know, CNT-91 should have it, while CNT-90 doesn't have it. Could be that early CNT-91 didn't have it either. Cheers, Magnus ___ 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] Pendulum CNT91 with TimeLab
Hi John Thanks for your reply. If I configure the counter for compatible mode, then set it up to measure frequency as a 53131/53132 from the Acquire menu and press the Monitor button, TimeLab displays the actual instrument name and then follows this with line after line of frequency measurements, for example, which so far is looking pretty good. If I then press the Start Measurement button it seems that TimeLab requests the instrument ID again but then interprets the reply as an incorrect frequency measurement and reports an error, which I admit isn't quite the same as I suggested earlier. The error message I was seeing was the same, I just didn't interpret it correctly. Until checking again just now I've not had the Monitor window displaying anything either so hadn't realised measurements were actually being accepted at that point. Not sure what I was doing wrong there but I guess the user issues might still be very much alive and kicking:-) The messages I get after trying to start the measurement are, in sequence Preparing Acquisition Establishing Connection Error: Invalid Frequency Value Tektronix, FCA3100, 149110, V1.28 25 Aug 2010 11:52 and that's where it stops. To be fair to Pendulum they do seem to have implemented talk-only mode, or at least they claim to have and there is a GPIB command to enable it, but so far I don't seem to have been able to get it to switch into that, or if I have I certainly haven't noticed:-) There's several steps described in the manual for invoking talk-only mode and some of those steps I can actually verify as having been accepted as I go along, but still not much sign of streaming data:-( Regards Nigel GM8PZR In a message dated 09/10/2013 22:49:24 GMT Daylight Time, j...@miles.io writes: TimeLab will capture and display the *IDN? result as the instrument name, but it shouldn't reject the connection if it doesn't get what it expects. How is it behaving when it rejects the data? You've got to wonder what was going through the heads of the designers of the various counters that didn't implement talk-only mode. Of all the obvious useful features to leave out... :( -- john, KE5FX Miles Design LLC -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts- boun...@febo.com] On Behalf Of gandal...@aol.com Sent: Wednesday, October 09, 2013 12:32 PM To: time-nuts@febo.com Subject: [time-nuts] Pendulum CNT91 with TimeLab Has anybody had any success setting up the Pendulum CNT91, or the Tektronix rebadged equivalent FCA3100, to run with TimeLab? It was suggested here some time ago that it should be possible to achieve this by running the counter in talk only mode but so far I've had no luck with the FCA3100 and am aware of similar problems with the CNT91. I suspect this is more likely a counter issue, or perhaps in my case that should read user issue:-) rather than anything to do with the software. I'm using an NI USB GPIB adapter and can run the FCA3100 with the cut down Tektronix supplied version of NI's Signal Express, but whilst I can also talk to it using NI's Measurement and Automation Explorer any attempts with that to switch it into talk only mode either don't work or perhaps it's reverting as soon as I close the software to switch over to TimeLab. I've also tried running the counter in GPIB compatible mode, where it's claimed to emulate the SCPI command set of the HP 5313x series, but as far as I can tell TimeLab is rejecting the data because it checks for a valid HP ID string whilst the counters still respond as either an FCA3100 or CNT91. Regards Nigel GM8PZR ___ 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. ___ 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. ___ 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] Pendulum CNT91 with TimeLab
Hi Magnus, It certainly supposed to be there, I've just not been very good at finding it so far:-) Regards Nigel GM8PZR In a message dated 10/10/2013 00:33:15 GMT Daylight Time, mag...@rubidium.dyndns.org writes: Hi John, On 10/09/2013 11:48 PM, John Miles wrote: TimeLab will capture and display the *IDN? result as the instrument name, but it shouldn't reject the connection if it doesn't get what it expects. How is it behaving when it rejects the data? You've got to wonder what was going through the heads of the designers of the various counters that didn't implement talk-only mode. Of all the obvious useful features to leave out... :( It was among the features that makes CNT-91 distinguish itself from CNT-90. That is at least what the Pendulum Product Manager said when asked about it. As far as I know, CNT-91 should have it, while CNT-90 doesn't have it. Could be that early CNT-91 didn't have it either. Cheers, Magnus ___ 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. ___ 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] Pendulum CNT91 with TimeLab
Considering that I now know there is data coming through I'm wondering if I'm still misinterpreting that error message. I was assuming that the ID string was what TimeLab was claiming to be an invalid frequency but it occurs to me that it might also mean I'm getting invalid frequency data and this is where it's coming from... In which case perhaps a copy of a portion of the monitor window frequency data might also be useful just in case that's the root of the problem.. +5.034E+06 +5.035E+06 +5.058E+06 +5.041E+06 +5.031E+06 Regards Nigel GM8PZR In a message dated 09/10/2013 22:49:24 GMT Daylight Time, j...@miles.io writes: TimeLab will capture and display the *IDN? result as the instrument name, but it shouldn't reject the connection if it doesn't get what it expects. How is it behaving when it rejects the data? You've got to wonder what was going through the heads of the designers of the various counters that didn't implement talk-only mode. Of all the obvious useful features to leave out... :( -- john, KE5FX Miles Design LLC -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts- boun...@febo.com] On Behalf Of gandal...@aol.com Sent: Wednesday, October 09, 2013 12:32 PM To: time-nuts@febo.com Subject: [time-nuts] Pendulum CNT91 with TimeLab Has anybody had any success setting up the Pendulum CNT91, or the Tektronix rebadged equivalent FCA3100, to run with TimeLab? It was suggested here some time ago that it should be possible to achieve this by running the counter in talk only mode but so far I've had no luck with the FCA3100 and am aware of similar problems with the CNT91. I suspect this is more likely a counter issue, or perhaps in my case that should read user issue:-) rather than anything to do with the software. I'm using an NI USB GPIB adapter and can run the FCA3100 with the cut down Tektronix supplied version of NI's Signal Express, but whilst I can also talk to it using NI's Measurement and Automation Explorer any attempts with that to switch it into talk only mode either don't work or perhaps it's reverting as soon as I close the software to switch over to TimeLab. I've also tried running the counter in GPIB compatible mode, where it's claimed to emulate the SCPI command set of the HP 5313x series, but as far as I can tell TimeLab is rejecting the data because it checks for a valid HP ID string whilst the counters still respond as either an FCA3100 or CNT91. Regards Nigel GM8PZR ___ 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. ___ 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. ___ 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.
