Re: [time-nuts] TICC resolution...

u try to push the envelope with better-than-spec > performance out of a TICC or try to automate channel-channel-reference > calibration, these details start to matter. > > /tvb > > > - Original Message - > From: "Wojciech Owczarek" <wojci...@owczarek.c

[time-nuts] TICC resolution...

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Re: [time-nuts] Optical Cesium or maybe Cesium "light"!

I tried lifting it but it wouldn't fit in my bag :( ___ 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] A (slightly) different apu2 question

silicon vendors jumped onto PTP, and PTP inherently lacks the sophisticated quorum and trust mechanisms NTP has, and yes, those are key items on the P1588 WG agenda. Thanks, Wojciech -- - Wojciech Owczarek ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] A (slightly) different apu2 question

ync the NIC to external 1PPS. What you call a "drivestamp", I call a software timestamp. If it's not a function of the silicon, it's software. All I meant was that there is some unexploited potential. -- - Wojciech Owczarek ___ time-nuts maili

Re: [time-nuts] A (slightly) different apu2 question

erity and technological sophistication in the world is of no > use without that foundation. > -- Miss Matheson, The Diamond Age, Neil Stephenson > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com

Re: [time-nuts] Leap second to be introduced at midnight UTC December 31 this year

Every year... always makes me wonder, do these vendors even test this themselves? I know at least one vendor who disn't have GPS simulators and relied on Trimble's built-in test mode - which gives you 13-bit week counters, whereas the satellites give you 10-bit counters. So the vendor assumed

Re: [time-nuts] 1 PPS 50-ohm driver

Florian, Gerhard, All, Thank you for the extensive answers. Just to think that at some point I passed exams where I had to implement truth tables in "raw" NMOS/PMOS - things evaporate quickly enough if you don't refresh, and then years go by and you wish you had been paying more attention. The

Re: [time-nuts] 1 PPS 50-ohm driver

, Wojciech -- - Wojciech Owczarek ___ 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] GPS Outage

Funny how apparently Trimble were involved in the wk860 problem, I thought they famously used their leap second based rollover protection: http://www.google.co.uk/patents/US5923618 :) Maybe that algorithm isn't that smart after all. Thanks, Wojciech    Original Message  

Re: [time-nuts] End of Loran-C in Europe confirmed.

I have a memo / stakeholder briefing document from the General Lighthouse Authorities UK/Ireland (can't see any confidentiality notes on it), that states: "" 4. Effect if France Terminates eLoran It is hoped that the RNTF [http://rntfnd.org] commercial initiative can maintain the continuity of

Re: [time-nuts] trade timestamps

and you've got White Rabbit (picosecond accuracy). The funniest thing about MIFID-II, or rather ESMA, the regulatory body, is that they question the traceability of GPS time to UTC! Perhaps because the EU has Galileo. Apparently. [disclaimer: personal opinions only] Thanks, Wojciech -- - Wojcie

Re: [time-nuts] When NTP goes wrong...

I think this is a classic case of confusing application security with network security. The whole idea relies on spoofing packets. A spoofing scenario is only realistic in a lab setting. Or in case of a physical takeover of a circuit, which - well, then you have more important things to worry

Re: [time-nuts] Symmetricom experts?

." > ___ > 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. > -- - Wojciech Owczarek ___ 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] IEEE 1588v2 on CISCO IE 3010

gt; https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- - Wojciech Owczarek ___ 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] Trimble Resolution [T, SMT, SMT GG] - spontaneous GPS loss of signal events, multiple locations

Hello Time Nuts, I was wondering if other people have seen this. 20+ receivers and they all use different variants of the Resolution boards - majority are the old Resolution T.We have observed sudden GPS loss of signal occurring. Seemingly nothing unusual, these things happen, that's what

Re: [time-nuts] Trimble Resolution [T, SMT, SMT GG] - spontaneous GPS loss of signal events, multiple locations

On 14 September 2015 at 15:37, Mike Cook wrote: > > Hi, > I have both -T and SMT and have not seen this on the 5th or afik any > other day. If you have other dates, I can check those in more detail. > OK - I think this itself excludes an issue with the boards. What

Re: [time-nuts] Trimble Resolution [T, SMT, SMT GG] - spontaneous GPS loss of signal events, multiple locations

On 14 September 2015 at 17:06, Brian Inglis wrote: > Hi, > Probably the vendor if no one else experiences or knows of Resolution > issues. > You can contact Trimble UK or Trimble Navigation Europe in Hampshire and > they > may know about any product or vendor

Re: [time-nuts] LORAN-C reception in the UK

. Cheers, Wojciech -- - Wojciech Owczarek ___ 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] Time in a cave

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

Re: [time-nuts] June 30 2015 leap second

On 7 Jan 2015 00:23, d0ct0r t...@patoka.org wrote: Hello, The same question is for UNIX epoch time. How computers knows if it is necessary to add leap seconds ? During the event, the kernel raw time (assuming UTC) will go from 23:59:58.9 straight to 00:00:00.0 when removing

Re: [time-nuts] rs-422 rs-232 to fast ethernet converter

, for improved usability. Regards Wojciech Wojciech Owczarek -Original Message- From: Paul Alfille paul.alfi...@gmail.com Sender: time-nuts time-nuts-boun...@febo.comDate: Mon, 24 Nov 2014 22:38:04 To: Discussion of precise time and frequency measurementtime-nuts@febo.com Reply

Re: [time-nuts] FYI: NPLTime(R) - a new service providing a precise time signal directly traceable to Coordinated Universal Time (UTC) and independent of GPS.

NPL Time will be delivered to access centres where those finance people are already present, from there it's only a matter of a crossconnect from their kit to the client and other operators. Regarding the three seconds - this is about to radically change with the upcoming EU directives (MIFID II)

Re: [time-nuts] FASTRAX GPS

to be reliable and usually well grounded though. Well, and compliant. Wojciech Owczarek ___ 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] Linux TSC clocksource on multi-core systems

Laszlo, What sometimes helps is additional kernel command line parameters, namely acpi=off (maybe you wouldn't have to disable the PM settings in the BIOS if you had this) and noapic, also there is the clocksource=tsc parameter which should make TSC the preferred clock source (that's if it's

Re: [time-nuts] Examples of leap-seconds in local timezones

Magnus, I have little experience with radio-based public time dissemination services, but some with GPS/NTP/PTP, so here's some info - hope it's of some value to you. For US and European exchanges, the leap second time happens outside trading hours, so maybe that's why we've heard little

Re: [time-nuts] Affordable (cheap) COTS / eBay kit for TIE / 1PPS phase comparison

Thanks for your suggestions so far everyone, The picPET would be a great solution if it could run at higher frequencies - but now there's a separate thread about that :) Magnus - my reference is a Brilliant Telecom (now Juniper Networks TCA series) PTP grandmaster (TCA8000), which does PTP and

[time-nuts] Affordable (cheap) COTS / eBay kit for TIE / 1PPS phase comparison

having to design or build the kit myself - I would love a project, but I have time to spare to complete one. Any pointers much appreciated. Best regards Wojciech -- - Wojciech Owczarek ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

Re: [time-nuts] Affordable (cheap) COTS / eBay kit for TIE / 1PPS phase comparison

I meant I have *no* time to spare to complete one. Thanks Wojciech ___ 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] PTPv2 grandmaster with a Z3805A?

-- - Wojciech Owczarek ___ 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] PTPv2 grandmaster with a Z3805A?

take longer than re-calculating drift. I pointed to TSC mostly because of the PTP GM side of the original poster's query. Regards Wojciech - Wojciech Owczarek ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi

Re: [time-nuts] PTPv2 grandmaster with a Z3805A?

On 20 August 2013 19:12, Mike S mi...@flatsurface.com wrote: On modern x86 processors, both Intel and AMD, the tsc increments at a constant rate, independent of the CPU frequency. I keep forgetting about constant_tsc. -- - Wojciech Owczarek

Re: [time-nuts] PTPv2 grandmaster with a Z3805A?

regards Wojciech -- - Wojciech Owczarek ___ 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.