Re: [time-nuts] Lady Heather leap second display
Sounds like my sort of party. I went to a similar party, the drinks were all served in laboratory glassware and the host did his party trick of drinking liquid nitrogen and rolling it around his mouth so that it did not burn him, and then spitting it out onto the floor where it immediately evaporated. He also dipped people's cigarettes in liquid oxygen, this turns them into miniature firecrackers when lit, all the more fun if they are in someones mouth at the time! The invites had the time/date in Unix seconds since 1970. Tom Harris On 24 June 2015 at 05:28, Esa Heikkinen wrote: > VK2DAP kirjoitti: > > I am hosting a small party and don't want to look like a dill more than I >> already do. >> > > Just make sure that UTC time is selected in thunderbolt settings. Check my > Lady Heather video from 2012, if there's any help for the settings: > > https://www.youtube.com/watch?v=DbvMZikqtI4 > > -- > 73s! > Esa > OH4KJU > > ___ > 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] magnetic electronic components
On 6/23/15 4:02 PM, Tim Shoppa wrote: Yes, for ferrites, many (all?) of the Amidon FT-xxx parts are perfectly standard Fair-Rite cores available from full-line distributors like Mouser, Newark, etc. Iron powder cores are not stocked by any of the standard distributors that I know of, but kitsandparts.com has good prices and quick delivery. Powdered metal.. typically from micrometals. Lodestone Pacific is one of their distributors. I've not bought small quantities of Micrometals parts from them, though. (lots of european distributors) Sometimes Amidon is the best or only place for a particular part. Good online source on ferrite transformers with measurements and distributor part numbers: Clifton Labs. e.g. http://www.cliftonlaboratories.com/ferrites,_inductors_and_transformers.htm Tim N3QE ___ 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] potential source for cheap copy of labview
If you'll put an arduino in as a controller, Makerrplot is a really nice interface, and really cost effective and easy to use. Can also be used on 'net devices and rs232. Robot Basic will do rs232 and 'net and is free. Don paul swed > Have the eval license up and operating with the NI simple LED test. It > works. > I can easily see how you could use this to create a nice GUI for some sort > of control project. > Regards > Paul > WB8TSL > > On Sun, Jun 21, 2015 at 6:09 PM, Jim Lux wrote: > >> On 6/21/15 11:28 AM, Don Latham wrote: >> >>> Just for fun, went to the site. $149 for basic, but by the time I added >>> all >>> the toolboxes I thought (!) I needed, I was over $750. sigh. >>> Don >>> >>> >> Hence the popularity of the student license (or Octave) >> >> >> ___ >> 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. > > -- "Noli sinere nothos te opprimere" Dr. Don Latham AJ7LL Six Mile Systems LLC 17850 Six Mile Road Huson, MT, 59846 mail: POBox 404 Frenchtown MT 59834-0404 VOX 406-626-4304 CEL 406-241-5093 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com ___ 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] windows and leap seconds
https://support.microsoft.com/en-us/kb/909614 basically: ignore the leap second, so your computer is "fast" relative to UTC, and next time you resynchronize time it adjusts Windows, these days, runs NTP http://blogs.msdn.com/b/mthree/archive/2015/01/08/leap-seconds-010815.aspx http://blogs.msdn.com/b/mthree/archive/2015/01/14/leap-seconds-011415.aspx for more info ___ 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] windows and leap seconds
From: Jim Lux https://support.microsoft.com/en-us/kb/909614 basically: ignore the leap second, so your computer is "fast" relative to UTC, and next time you resynchronize time it adjusts Windows, these days, runs NTP http://blogs.msdn.com/b/mthree/archive/2015/01/08/leap-seconds-010815.aspx http://blogs.msdn.com/b/mthree/archive/2015/01/14/leap-seconds-011415.aspx for more info ___ .. although the NTP run by default meets few of the standard NTP functions, as provided by the Meinberg NTP port, which includes smooth leap-second handling. http://www.meinbergglobal.com/english/sw/ntp.htm#ntp_stable http://www.satsignal.eu/ntp/setup.html Cheer, 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 To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] 53230A noise floor
I finally had time to compare the 53230A CONT (resolution-enhanced, aka lambda-counting) and RCON (undocumented! reciprocal continuous counting, aka pi-counting) modes, and wrote down some notes: http://www.anderswallin.net/2015/06/cont-vs-rcon-mode-on-the-53230a-frequency-counter/ comments on my notes, here or in the blog, are welcome. enjoy! Anders On Tue, Apr 7, 2015 at 9:42 PM, Mod Mix wrote: > Ole Petter Ronningen: > >> Tangetially relevant; I made a "patch" for TimeLab to use the gap-free >> frequency measurement-mode for the 53230A, if anyone is interested. >> > Thanks for this great support! > Ulli > > ___ > 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] Two V(in)s walk into a bar...
Lets take a hypothetical device, like specifically a PRS10, but could be any time/freq device like a PLL or an amplifier or all of these. Isolating power supplies with some dexterity can greatly improve noise control, and less peformance related, can help us protect very very expensive circuits from their less bourgeois support ICs. Many of us may choose to implement them as modular devices for easy relocation or replacement. Main question: if I want to isolate the quiet and noisy power supplies, or just supply them differently, can they share a common return? The basic answer has to be yes. Eventually everything has to get back to ground, and the Earth itself is a fair equalizer of all things on it. I can clearly join analog and digital back at the input supply. But if I had them isolated, do those iso grounds have to stay with their iso supplies? Take the PRS10 - it has two cables for Vin - power and signal supplies - but only one return cable. Can i isolate, via transformers couplers what have you the two supplies yet return the common ground to one or the other? The signals handle themselves - they each have a ground wire of their own, or does that handle it ? Are each of those opportunities for a loop? I know it'd work with just keeping separate DVcc and AVcc supplies that join at some point, and then that return can join at the star ground like everyone else. If you are designing the module, you can handle the isolation inside and just have one input supply and return then isolate new supplies internally and eliminate the second cable. Or two in vcc, two out gnd. Those all make sense. I think the single return option on the PRS10 is what's hanging me up here. Does isolation offer any real further benefit than AVxx and DVxx that is even worth pursuing outside the extreme use cases? Lots of words. Thanks. NS ___ 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] windows and leap seconds
Hilarious note on the bottom of the document: This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. Wasn't the leap second publicised 6 months in advance? Tom Harris On 25 June 2015 at 02:24, David J Taylor wrote: > From: Jim Lux > > https://support.microsoft.com/en-us/kb/909614 > > basically: ignore the leap second, so your computer is "fast" relative > to UTC, and next time you resynchronize time it adjusts > > Windows, these days, runs NTP > > http://blogs.msdn.com/b/mthree/archive/2015/01/08/leap-seconds-010815.aspx > http://blogs.msdn.com/b/mthree/archive/2015/01/14/leap-seconds-011415.aspx > > for more info > ___ > > .. although the NTP run by default meets few of the standard NTP > functions, as provided by the Meinberg NTP port, which includes smooth > leap-second handling. > > http://www.meinbergglobal.com/english/sw/ntp.htm#ntp_stable > http://www.satsignal.eu/ntp/setup.html > > Cheer, > 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 > 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.
