Re: [time-nuts] Thermal Compensation: Digital vs Analog

2014-02-26 Thread Attila Kinali
performance compared to non-compensated operation? Did you try any other approaches? Why? Why not? Yes, i'm a curious mind :-) Thanks in advance Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy

Re: [time-nuts] Cesium 133 on kickstarter

2014-04-10 Thread Attila Kinali
probably would buy a CSAC and put it into some equipment instead. :-) Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment

Re: [time-nuts] optically excite a quartz crystal?

2014-04-20 Thread Attila Kinali
lasers to generate RF frequency refernces coupled to the interogation of atomic clocks (see e.g. [1]) and the results are comparable to ultra low noise crystal oscillators. Attila Kinali [1] State-of-the-Art RF Signal Generation From Optical Frequency Division

Re: [time-nuts] optically excite a quartz crystal?

2014-04-21 Thread Attila Kinali
was photothermal Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter

Re: [time-nuts] optically excite a quartz crystal?

2014-04-21 Thread Attila Kinali
was photothermal 10 mW laser is reasonable. What levels of signal where they getting? 6.2mV, with an real laser incident power of 5mW (the AOM ate half of the power) Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings

Re: [time-nuts] 74HCT9046A Max. Operating Frequency

2014-04-24 Thread Attila Kinali
or Analog Devices and buy one of their PLL's that have a specified upper frequency. Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look

Re: [time-nuts] Symmetricom chip scale atomic clock

2014-04-25 Thread Attila Kinali
, weeks, months, or even years. So, please refrain from spreading false rumors that anyone is ignoring the issue when aparently the contrary is the case. Attila Kinali PS: Disclaimer: i neither work for or have any ties with Microsemi or Jacksonlabs. -- I pity people who

[time-nuts] Low SNR GPS reception and cheap LNAs

2014-04-25 Thread Attila Kinali
, like SC-70/SOT-323 or similar/larger. Attila Kinali [1] www.nuand.com/bladeRF [2] www.gnss-sdr.org -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look

Re: [time-nuts] Low SNR GPS reception and cheap LNAs

2014-04-25 Thread Attila Kinali
cable i plan to use (getting the antenna to a better location) Attila Kinali [1] http://www.triquint.com/products/d/DOC-B-0120 -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments

Re: [time-nuts] Low SNR GPS reception and cheap LNAs

2014-04-25 Thread Attila Kinali
what i need it to do! Thanks a lot! Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being

Re: [time-nuts] Low SNR GPS reception and cheap LNAs

2014-04-26 Thread Attila Kinali
somewhere with good skyview. I ordered 4 of those lna4all, so that problem should be solved. I'm also getting a better antenna and we'll see how much signal i can get out of this place. Attila Kinali -- I pity people who can't find laughter or at least some bit

Re: [time-nuts] Low SNR GPS reception and cheap LNAs

2014-04-26 Thread Attila Kinali
in order to improve reception. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being

Re: [time-nuts] New timing receivers?

2014-04-27 Thread Attila Kinali
it is even better? According to [1], the LEA6-T has a sigma of 3ns after sawtooth correction. Attila Kinali [1] https://www.u-blox.com/images/downloads/Product_Docs/Timing_AppNote_%28GPS.G6-X-11007%29.pdf -- I pity people who can't find laughter or at least some bit

Re: [time-nuts] New timing receivers?

2014-04-29 Thread Attila Kinali
. Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look at the bleeding body mangled beneath the heap -- Tirin, The Dispossessed

Re: [time-nuts] Low cost GPS module for 100ns timestamping error

2014-05-04 Thread Attila Kinali
slope, but that's at most a rough guess. For more information on this topic see Phase Noise and Frequency Stability in Oscillators by Enrico Rubiola. HTH Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day

Re: [time-nuts] OT -- AOL and Yahoo Email Warning

2014-05-06 Thread Attila Kinali
of the other free email providers. There are plenty that actually care about their service. And sorry for the OT, but it always pains me when i see people using yahoo or aol. Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity

Re: [time-nuts] Low cost GPS module for 100ns timestamping error

2014-05-10 Thread Attila Kinali
didn't meet the specs. Usually the manufacturers are quite happy to share that data if you ask nicely. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even

[time-nuts] VNA design

2014-06-02 Thread Attila Kinali
on how to build a directional coupler that does 10-3000MHz without going to exotic materials would be much appreciated. All papers i found deal mostly with stuff above 5GHz. Seems like low frequency couplers are considered a solved problem. Attila Kinali [1] Handbook

Re: [time-nuts] VNA design

2014-06-02 Thread Attila Kinali
be physically large but easy to construct if you have access to machine tools I think all the Minicircuit ones are build using transformers. I cannot think of any other way to get such a large bandwith in these small dimensions otherwise. Attila Kinali -- I pity people

Re: [time-nuts] VNA design

2014-06-02 Thread Attila Kinali
which can suddenly disapear. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do

Re: [time-nuts] VNA design

2014-06-02 Thread Attila Kinali
in there, which i cannot see yet. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do

Re: [time-nuts] VNA design

2014-06-02 Thread Attila Kinali
. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy

Re: [time-nuts] quartz oscillator injection locking

2014-07-19 Thread Attila Kinali
to model injection locking in spice (though, i must say that is one paper i stumbled upon and probably not the best in that area). HTH Attila Kinali [1] A Study of Locking Phenomena in Oscillators, by Robert Adler, 1946 reprinted in Proceedings of IEEE October 1973 [2

Re: [time-nuts] temperature sensor

2014-07-19 Thread Attila Kinali
. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy in life

[time-nuts] Noise and non-linear behaviour of ferrite transformers

2014-07-19 Thread Attila Kinali
or measurements of this. Does anyone have some pointers to documents on what kind of noise i could expect (type, and strength) and what/how strong the non-linear behaviour of transformers would be? Thanks in advance Attila Kinali PS: although this started as something with a real

Re: [time-nuts] quartz oscillator injection locking

2014-07-19 Thread Attila Kinali
the math... Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's

Re: [time-nuts] Noise and non-linear behaviour of ferrite transformers

2014-07-20 Thread Attila Kinali
on that level. And i would like to understand what i am dealing with. Constructing a theory out of experimental data works only if you can trust the data. And even then it's a damn lot of work to have something consistent and half way general. Attila Kinali -- I pity people

Re: [time-nuts] Noise and non-linear behaviour of ferrite transformers

2014-07-20 Thread Attila Kinali
. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy

Re: [time-nuts] temperature sensor

2014-07-20 Thread Attila Kinali
either. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's

Re: [time-nuts] Noise and non-linear behaviour of ferrite transformers

2014-07-20 Thread Attila Kinali
or left open. Or alternativelly use some differntial, shielded cable. Apropos: does anyone know how good Cat5e/Cat6 cable is for timing applications? Ie, how large is the phase shift on bending or temperature and humidity change? Attila Kinali -- I pity people who

Re: [time-nuts] temperature sensor

2014-07-20 Thread Attila Kinali
(a change in length means a change in resonant frequency/wavelength) but i have no references for such (though, i haven't searched either) Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I

Re: [time-nuts] temperature sensor

2014-07-21 Thread Attila Kinali
don't look too bad, or if you want PT100 the M310 by Heraeus. The KN1510 by Heraeus look also nice, but are a tad bit more expensive (about 20USD/pcs) Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day

Re: [time-nuts] temperature sensor

2014-07-21 Thread Attila Kinali
to hobbyists? Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's

Re: [time-nuts] temperature sensor

2014-07-21 Thread Attila Kinali
a similar solution is possible with a NE555 as well. Of course, you would need to adjust the PID controller parameters to accomodate for the new element in the control loop. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement

Re: [time-nuts] temperature sensor

2014-07-21 Thread Attila Kinali
physics limits the temperature of vapor? The ideal gas equation says that p*V/T = const, ie that the temperature can rise at a constant pressure, as long as the gas is allowed to expand. Attila Kinali -- I pity people who can't find laughter or at least some bit

Re: [time-nuts] temperature sensor

2014-07-21 Thread Attila Kinali
can go wrong and what accuracies are achievable. It also contains a list of references for further reading. I did not have a look at those yet, but from the titles they look very reasonable. Attila Kinali -- I pity people who can't find laughter or at least

Re: [time-nuts] temperature sensor

2014-07-22 Thread Attila Kinali
, but hysteresis is in the same ball park (see [1]). Attila Kinali [1] Long term stability and hysteresis effects in Pt100 sensors used in industry, by Ljungblad, Holmstein, Josefson, Klevedal, 2013 -- I pity people who can't find laughter or at least some bit of amusement

Re: [time-nuts] temperature sensor

2014-07-23 Thread Attila Kinali
things to read would be highly appreciated. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing

Re: [time-nuts] GPS-III

2014-07-24 Thread Attila Kinali
. The launch date of the first Block III has been pushed back more than once. It was meant to be somewhen this year, but i don't know what the current launch date is projected to be. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement

Re: [time-nuts] GPS-III

2014-07-24 Thread Attila Kinali
) code does not need to be decoded for tracking the signal. This is known as codless tracking. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even

[time-nuts] GPS antenna in snowy environment (was: LEA-6T Software.)

2014-08-28 Thread Attila Kinali
a try would be to grease the cone. But i've only heard of that and never seen it in action. So i cannot tell whether that helps in any way. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I

Re: [time-nuts] Practical Survey-In Accuracy?

2014-08-28 Thread Attila Kinali
/volumes above the antenna. Unless you get to the top of your roof, i wouldn't bother adding a choke ring. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous

Re: [time-nuts] Practical Survey-In Accuracy?

2014-08-28 Thread Attila Kinali
on what you do with the GPS signal, you might or might not care about that. If you are a nutty time-nut and want to wring out ever last bit of jitter out of your PPS, then you will care about the effect of the roof. Attila Kinali -- I pity people who can't find laughter

Re: [time-nuts] Practical Survey-In Accuracy?

2014-08-28 Thread Attila Kinali
will have a pretty good view of the sky from that location. Any other issues that I should be aware of when dealing with a metal roof? Heating of the garage due to sun? Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement

Re: [time-nuts] GPS antenna in snowy environment (was: LEA-6T, Software.)

2014-08-28 Thread Attila Kinali
a long path trough the pipe, changing their phase ever so slightly. How much, depends on the pipe, it's thiknes and material. Whether it actually matters or not, depends on your requirements. Attila Kinali -- I pity people who can't find laughter or at least some bit

Re: [time-nuts] GPS antenna in snowy environment

2014-08-28 Thread Attila Kinali
do not have an anechoic chamber to characterize antennas, much less the other equipment needed for this. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous

Re: [time-nuts] Time-Nuts Digests displays strange...

2014-08-29 Thread Attila Kinali
difficult, so having the ID helps enormously to gain the context of the discussion. Thanks everyone. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even

Re: [time-nuts] Need help with transformer core

2014-08-31 Thread Attila Kinali
converter of a device unless i know exactly what happens downstream and how the whole system was designed. Especially in bigger, complex devices, there is a strange interdependence between power supply behaviour and consumer behaviour. Attila Kinali -- I pity people

Re: [time-nuts] Need help with transformer core

2014-08-31 Thread Attila Kinali
enough, as the FE-5680A has its own internal regulator. HTH Attila Kinali [1] A little warning here. The normal way how such devices pass the EMC/EMI tests is by constructing a still realistic circuitry around it, that modifies the devices behaviour enough that any non

Re: [time-nuts] Hydrogen Maser KIT! Update #1

2014-11-02 Thread Attila Kinali
). Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has nothing to do with being superficial. It's a matter of joy in life

Re: [time-nuts] Hydrogen Maser KIT! Update #1

2014-11-03 Thread Attila Kinali
for active masers), but i don't understand the too many case. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary. It has

Re: [time-nuts] Hydrogen Maser KIT! Update #1

2014-11-03 Thread Attila Kinali
On Sun, 02 Nov 2014 21:49:34 -0500 Chuck Harris cfhar...@erols.com wrote: They cleaned the vessel very well first with acetone and second, probably a little distilled water to etch the glass slightly, Distilled water etches glass? Really? Attila Kinali -- I pity

Re: [time-nuts] AOL Email Issues

2014-11-04 Thread Attila Kinali
. The best you can do, is to report such issues to the mailinglist admin, whos email address you can usually find in the header of the mail. Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I

Re: [time-nuts] NPR Story I heard this morning

2014-11-04 Thread Attila Kinali
their acceleration using doppler shift of the hyperfine transitions line) Attila Kinali -- I pity people who can't find laughter or at least some bit of amusement in the little doings of the day. I believe I could find something ridiculous even in the saddest moment, if necessary

Re: [time-nuts] NPR Story I heard this morning

2014-11-04 Thread Attila Kinali
, 2014 [4] Novel Techniques for Optical Fiber Links beyond Current Practice, by Calosso et al, 2014 And these are just a few of the presentation given at EFTF this year on that topic. Attila Kinali -- I pity people who can't find laughter or at least some bit

Re: [time-nuts] Followup (still want a GPS-type NTP refclock)

2012-10-17 Thread Attila Kinali
of the Motorola M12 Oncore timing receiver. HTH Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look at the bleeding body mangled beneath

Re: [time-nuts] RasberryPi, timing and GPS receivers

2012-10-17 Thread Attila Kinali
considerably more power during aquisition than the LEA4 did and the LEA6. IIRC we measured up to 150mA (compared to 100mA with LEA4). I don't know the Rasberry, but i guess that should be not a proble, but you should check for it nevertheless. Attila Kinali -- The trouble with you

Re: [time-nuts] RasberryPi, timing and GPS receivers

2012-10-17 Thread Attila Kinali
. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ 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] documentation for beginners (was: Followup (still want a GPS-type NTP refclock))

2012-10-21 Thread Attila Kinali
this... And something that glues all of the above together... The rest is just a mater of asking and finding the right documenation. :-) Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing list

Re: [time-nuts] documentation for beginners

2012-10-21 Thread Attila Kinali
understanding on what is going on in time-nuts land. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

Re: [time-nuts] documentation for beginners

2012-10-21 Thread Attila Kinali
already taken.. by a certain TVB :-) Tom: Would you mind if we would use [www|wiki].time-nuts.org for this purpose? I can also provide DNS servers and other infrastructure if needed. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] documentation for beginners (was: Followup (still want a GPS-type NTP refclock))

2012-10-24 Thread Attila Kinali
the attached one. If anyone needs more ntp data, please let me know Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ntp_tcpdump.pcap Description: application/vnd.tcpdump.pcap ___ time-nuts mailing list

Re: [time-nuts] Disciplining a TCXO

2012-10-26 Thread Attila Kinali
type of frequency correction is used. For a general TCXO it gets very tedious to calculate. Of course, if you need only a crude accuracy, then a simple average error correction might be enough. Attila Kinali -- The trouble with you, Shev, is you don't say anything until

Re: [time-nuts] Timing performance of servers

2012-10-26 Thread Attila Kinali
. And of course, this shift is not constant and different for each satelite. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Sulzer 5A 5P PSU/battery question

2012-11-01 Thread Attila Kinali
as the negative Voltage slope of NiMH is not as pronounced as with NiCd. If you have such a charger, you need to replace it with a modern one. HTH Attila Kinali PS: Yes, i cannot count :-) -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] CIC GGER GPSDO

2012-11-02 Thread Attila Kinali
). Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson

Re: [time-nuts] How to start a new topic

2012-11-02 Thread Attila Kinali
there) Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look at the bleeding body mangled beneath the heap -- Tirin, The Dispossessed

Re: [time-nuts] Termination talk

2012-12-08 Thread Attila Kinali
On Fri, 07 Dec 2012 23:42:44 +0100 Magnus Danielson mag...@rubidium.dyndns.org wrote: Only then he made the comment that there might be something in that Black Magic book that I had bought and distributed. Which book would that be? Attila Kinali

Re: [time-nuts] New to Time Synching hardware - needing some advice

2012-12-27 Thread Attila Kinali
that cable. Ofcourse this only works, if you can lay a cable temporarily. If you are in a EMP secured room, the only way to get the pulse measured is the approach with the traveling Rb. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] clock-block any need ?

2012-12-27 Thread Attila Kinali
it to measure what can be done. You can guestimate that getting below 200us is not easy in a normal network, but sub-1ms should be possible unless the network is very loaded. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] clock-block any need ?

2012-12-27 Thread Attila Kinali
are usally of quite bad quality (ie it takes them a long time to do anything), and they try to queue as much as possible to increase troughput (which adds unpredictable delay). Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] clock-block any need ?

2012-12-28 Thread Attila Kinali
and feed it to the PC some way or other. You dont have to run full IEEE1588, just use the timestamping the the ethernet MAC provides. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts

Re: [time-nuts] Testing the TAC, and a question about ADEV

2012-12-28 Thread Attila Kinali
, i dont get what it means in terms of electronic behaviour in a TAC. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Timing between two GPS PPS outputs.

2012-12-28 Thread Attila Kinali
as a timing source for a cherenkov telescope array. You might want to contact him. May i ask what you need this high precision for? Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing

Re: [time-nuts] clock-block any need ?

2012-12-28 Thread Attila Kinali
comes from the usual rtt time measurements on PCs. There are still many things to learn here. Arent we here because for exactly this reason? :-) Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] ensemble oscillators for better stability

2012-12-28 Thread Attila Kinali
problem you'd have to deal with. Stupid question, but wouldnt the use of a DBM make the noise being added up, instead of being awaraged out? Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

[time-nuts] frequency locking and phase locking in atomic clocks

2012-12-28 Thread Attila Kinali
radiation is coupled out to a PLL that steers a crystal oscillator. But i've read that the passive H masers are inherently more stable than the active H masers. Could someone enlighten me why this is the case? Attila Kinali -- There is no secret ingredient -- Po, Kung

Re: [time-nuts] clock-block any need ?

2012-12-30 Thread Attila Kinali
with their relative timing. Thus i never bothered to decrease the jitter. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https

Re: [time-nuts] Strange GPS behaviour

2012-12-30 Thread Attila Kinali
://phk.freebsd.dk/raga/sneak/ I can post some GPSCon graphs of this significant improvement during the test next week if there is interest. More graphs are always desirable :-) Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] time-nuts Digest, Vol 101, Issue 152

2012-12-30 Thread Attila Kinali
fields? Most fans (even computer fans) have a quite strong, changing field. Or is that insignificant compared to other sources of noise? Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts

Re: [time-nuts] Grounding

2012-12-30 Thread Attila Kinali
did not have working links I used a zip file with a Word doc for the links. Would it be possible to send me this zip file? Didier had to take it off his website because of EDN sending him a DMCA notice. Thanks in advance Attila Kinali -- There is no secret

Re: [time-nuts] Grounding

2012-12-30 Thread Attila Kinali
On Sun, 30 Dec 2012 21:14:12 +0100 Attila Kinali att...@kinali.ch wrote: Salut! Meh.. stupid me... sorry, this was intended as private mail. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda

Re: [time-nuts] An embedded NTP server

2013-01-01 Thread Attila Kinali
. You will indeed have less than 1 UI jitter, you may not have a whole lot less… What about those uC that use a VCO that runs up at several 100MHz (i've seen up to 800MHz) and devide it down to what they actually need. Shouldnt this improve jitter quite considerably? Attila

Re: [time-nuts] An embedded NTP server

2013-01-01 Thread Attila Kinali
Hoi Bob, On Tue, 1 Jan 2013 12:03:49 -0500 Bob Camp li...@rtty.us wrote: On Jan 1, 2013, at 11:34 AM, Attila Kinali att...@kinali.ch wrote: What about those uC that use a VCO that runs up at several 100MHz (i've seen up to 800MHz) and devide it down to what they actually need. Shouldnt

Re: [time-nuts] Questions about TAC frontend, and some measurements

2013-01-03 Thread Attila Kinali
based current sources as they are, including Q16)? Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin

Re: [time-nuts] Questions about TAC frontend, and some measurements

2013-01-03 Thread Attila Kinali
On Thu, 3 Jan 2013 21:28:17 +0100 Attila Kinali att...@kinali.ch wrote: What is the reason behind the emitter followers Q1 and Q9? Respecitvely, why shouldnt R3/R4, R7/R8 be connected directly to V+/V-? Scratch that question. Looking at the schematics again, it became obvious

Re: [time-nuts] single board PCs

2013-01-07 Thread Attila Kinali
email. As for processing power, the pandaboard is probably the most powerfull with an dual-core 1.2GHz processor. But even the smaller OlinuXino with it's i.MX233 that runs IIRC up to 450MHz, you can do more than just a little bit of number crunching. Attila Kinali

Re: [time-nuts] single board PCs

2013-01-07 Thread Attila Kinali
. Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump them all out and never look at the bleeding body mangled beneath the heap -- Tirin

Re: [time-nuts] matlab, python, etc.

2013-01-07 Thread Attila Kinali
, but then, I'm less wild about LabView (because under it all, I'm a edit the text file, compile and run kind of guy). Apropos: Any good recomendation for a book/website/or similar to learn matlab/octave? Attila Kinali -- The trouble with you, Shev, is you don't say

Re: [time-nuts] single board PCs

2013-01-07 Thread Attila Kinali
On Mon, 7 Jan 2013 16:41:06 +0100 Attila Kinali att...@kinali.ch wrote: Eg. you can also try the OlinuXino from Olimex, which are damn cheap. (and unlike the Raspberry Pi they are completely documented and you don't need any binary only drivers). I haven't tried any of those yet (didn't have

Re: [time-nuts] GPS Patch Antenna Electrode Tarnish

2013-01-11 Thread Attila Kinali
though, things look a bit different. Gas contains a quite amount of sulfur and with burning you get some quite reactive compounts. It got a lot better (at least here in europe) after gas had to be desulfurized, but probably not yet perfect. Attila Kinali -- There is no secret

Re: [time-nuts] Is possible precise 1pps?

2013-03-18 Thread Attila Kinali
these small buyers trough their webshop where you can buy single pieces (which is far better than most manufacturers who do not sell single pieces at all). Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned

Re: [time-nuts] Is possible precise 1pps?

2013-03-20 Thread Attila Kinali
at all). Sounds like a time-nuts group buy? Tried that a year or two ago. Did even get a special price from u-blox that would usually need higher volumes, but it didn't take off. Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
need better performance or want to tinker and see what can be done with home made equipment, then you should go for different circuits. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
/CummingsSNUG2008Boston_CDC.pdf I think with these it becomes obvious where the problem lies and what the solution is. Attila Kinali -- The trouble with you, Shev, is you don't say anything until you've saved up a whole truckload of damned heavy brick arguments and then you dump

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
, with some negative effects on the circuitry downstream. HTH Attila Kinali [1] I ignore the additional +/-1 of bit 5 for clarity -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
On Mon, 25 Mar 2013 18:56:34 +0100 Attila Kinali att...@kinali.ch wrote: Because of this, the behaviour of the counter is undefined and can lead not only to missing one count (which would be caught by the PI control loop as additional noise), but the output of the D-flip flops in the counter

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
) at the corner cases. This is especially the case when you know that you hardly get any steps or hits in your loop. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
are from the HC and HCT families. These have been designed in the 70s (IIRC) and i very much doubt that any of the manufacturers changed anything in their design since then. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane

Re: [time-nuts] Brooks Shera

2013-03-25 Thread Attila Kinali
with the additional noise. Attila Kinali -- The people on 4chan are like brilliant psychologists who also happen to be insane and gross. -- unknown ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go

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