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
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
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
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
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
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
, 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
, 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
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
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
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
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
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
.
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
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
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
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
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
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
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
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
.
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
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
.
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
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
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
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
.
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
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
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
(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
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
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
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
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
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
, 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
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
.
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
) 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
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
/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
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
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
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
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
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
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
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
).
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
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
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
.
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
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
, 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
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
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
.
Attila Kinali
--
There is no secret ingredient
-- Po, Kung Fu Panda
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and follow the instructions there.
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
___
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understanding on what is going on in time-nuts land.
Attila Kinali
--
There is no secret ingredient
-- Po, Kung Fu Panda
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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
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
___
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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
. And of course, this shift is not constant
and different for each satelite.
Attila Kinali
--
There is no secret ingredient
-- Po, Kung Fu Panda
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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
).
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
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
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
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
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
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
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
, 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
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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
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
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
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
with
their relative timing. Thus i never bothered to decrease the jitter.
Attila Kinali
--
There is no secret ingredient
-- Po, Kung Fu Panda
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://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
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
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
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
. 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
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
based
current sources as they are, including Q16)?
Attila Kinali
--
There is no secret ingredient
-- Po, Kung Fu Panda
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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
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
.
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
, 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
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
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
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
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
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
/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
, 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
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
) 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
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
with the additional noise.
Attila Kinali
--
The people on 4chan are like brilliant psychologists
who also happen to be insane and gross.
-- unknown
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