Hi
The other question would be - what libraries (if any) are used by the code? If
any are they windows compatible?
Bob
On Dec 21, 2012, at 2:16 AM, Hal Murray hmur...@megapathdsl.net wrote:
Can you create an executable for windows?
I know next to nothing about Windows. (and don't have
On 12/20/12 11:16 PM, Hal Murray wrote:
Can you create an executable for windows?
I know next to nothing about Windows. (and don't have access to any Windows
machines)
Others have reported that Python works on Windows.
I use python all the time on Windows (and unchanged from Python
Hal,
Can you create an executable for windows?
Thanks,
Said
Sent from my iPad
On Dec 14, 2012, at 8:47 PM, Hal Murray hmur...@megapathdsl.net wrote:
saidj...@aol.com said:
Time-Nuts, anyone willing to write this for the benefit of all?
Does python run on Windows? If so, give me
On 12/21/2012 1:52 AM, Said Jackson wrote:
Can you create an executable for windows?
Thanks,
Said
python is a script-type language which runs on top of the python engine
(almost similar to how java programs run on a java engine)
... to answer your question: yep, you can download here:
Can you create an executable for windows?
I know next to nothing about Windows. (and don't have access to any Windows
machines)
Others have reported that Python works on Windows.
If you give me a few input/output samples, I'll try to write some python code
to do the translation. If I get
Am 18.12.2012 03:01, schrieb David:
That is the stuff but Tektronix had some with an even smaller
diameter. It would be nice to have a new source as I would hate to
cannibalize oscilloscopes for it.
Could be Sage Wireline. Also used for couplers and RF power amps.
[mailto:time-nuts-boun...@febo.com] On Behalf
Of Gerhard Hoffmann
Sent: 18 December 2012 08:24
To: time-nuts@febo.com
Subject: Re: [time-nuts] Comparing PPS from 2 GPS units
Am 18.12.2012 03:01, schrieb David:
That is the stuff but Tektronix had some with an even smaller
diameter. It would
On 12/18/12 12:23 AM, Gerhard Hoffmann wrote:
Am 18.12.2012 03:01, schrieb David:
That is the stuff but Tektronix had some with an even smaller
diameter. It would be nice to have a new source as I would hate to
cannibalize oscilloscopes for it.
Could be Sage Wireline. Also used for couplers
On 12/17/12 11:21 PM, Hal Murray wrote:
Cond. Material Magnet Wire Helix
(What is magnet wire, and what does helix mean and how does it effect
coax?)
Magnet wire is enamelled wire (usually copper).
I'm familiar with that usage, but I don't know why it's interesting in the
context
A fifth solution is to use a pulse delay generator like a DG535. I use this
to create high-resolution early/late 1PPS sync pulses. They show up on eBay,
but aren't cheap. For bargains, watch for older model programmable pulse
delay generators by BNC (Berkeley Nucleonics Corporation).
Thanks.
On Mon, 17 Dec 2012 10:19:43 -0800, Hal Murray
hmur...@megapathdsl.net wrote:
A fifth solution is to use a pulse delay generator like a DG535. I use this
to create high-resolution early/late 1PPS sync pulses. They show up on eBay,
but aren't cheap. For bargains, watch for older model
Hi
With R-C delay generators, temperature coefficient is likely to be an issue.
NPO will get you to 30 ppm/C. Most resistors will be up in the 50 or so ppm / C
range. On top of that you have the contributions of what ever strays might be
running around.
If you are trying to set up say a 1 us
You would not want to do this for long delays obviously. A digital
counter with the delay used as a vernier would be more appropriate
there. That gets complicated fast if the input is asynchronous.
Analog first order compensation of the temperature coefficient is
straightforward using the same
.
From: David davidwh...@gmail.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, December 17, 2012 6:56 PM
Subject: Re: [time-nuts] Comparing PPS from 2 GPS units
On Mon, 17 Dec 2012 10:19:43 -0800, Hal Murray
hmur
Hi
I believe you will find that NPO's are your best bet by far for short delays.
The R's and C's on a simple semi are going to have some pretty major tempco's.
If they go with a fancy process they can change that. Normally to keep things
cheap they use the simple process.
Bob
On Dec 17,
li...@rtty.us said:
If you are trying to set up say a 1 us delay, you will get ~ 50 ps per
degree C in your delay. That's a lot .
A while ago, t...@leapsecond.com said:
A long delay cable is fine too. If these are timing receivers you probably
don't need more than 100 ns of delay, once
and frequency measurementtime-nuts@febo.com
Sent: Monday, December 17, 2012 6:56 PM
Subject: Re: [time-nuts] Comparing PPS from 2 GPS units
On Mon, 17 Dec 2012 10:19:43 -0800, Hal Murray
hmur...@megapathdsl.net wrote:
A fifth solution is to use a pulse delay generator like a DG535. I use
Am 17.12.2012 19:56, schrieb David:
My next pretrigger generator is going the differential comparator or
differential ECL route with a fast ramp and precision reset. I expect
jitter to be significantly better than 10s of picoseconds for delays
up to about 100 nanoseconds. If I get down to 10
Hi
The nice thing about a spool of coax is that it's got a bit of thermal mass. It
will average out a lot of minor temperature ups and downs.
Bob
On Dec 17, 2012, at 4:34 PM, Hal Murray hmur...@megapathdsl.net wrote:
li...@rtty.us said:
If you are trying to set up say a 1 us delay, you
I wish there was an source for helically wound shielded differential
transmission line like the type used in later analog oscilloscopes.
The only place I know where to find it is oscilloscope part mules.
Essentially it was transmission line with a ridiculously low velocity
factor. It is great
Like this?
http://www.ebay.com/itm/Tektronix-Delay-Line-for-475-Oscilloscope-New-/290824098279?pt=LH_DefaultDomain_0hash=item43b67791e7
Em 17/12/2012 23:39, David escreveu:
I wish there was an source for helically wound shielded differential
transmission line like the type used in later
Hi
At some point the whole get it onto the board / get it off the board thing
becomes the main issue. Then it's easier to just make the delay line part of
the PC layout.
Bob
On Dec 17, 2012, at 8:39 PM, David davidwh...@gmail.com wrote:
I wish there was an source for helically wound
That is the stuff but Tektronix had some with an even smaller
diameter. It would be nice to have a new source as I would hate to
cannibalize oscilloscopes for it.
On Mon, 17 Dec 2012 23:43:21 -0200, Daniel Mendes dmend...@gmail.com
wrote:
Like this?
I have seen the small diameter, about like RG-174, delay cable used
for patching PC boards after the fact. That is how I know it exists.
:)
I just have not found a source for it.
On Mon, 17 Dec 2012 20:47:34 -0500, Bob Camp li...@rtty.us wrote:
Hi
At some point the whole get it onto the board
On 12/17/12 5:39 PM, David wrote:
I wish there was an source for helically wound shielded differential
transmission line like the type used in later analog oscilloscopes.
The only place I know where to find it is oscilloscope part mules.
You mean RG65
jim...@earthlink.net said:
You mean RG65 http://www.awcwire.com/ProductSpec.aspx?id=M17/
34-RG65-Coaxial-Cable or RG186 http://www.awcwire.com/ProductSpec.aspx?id=RG1
86-Coaxial-Cable
Interesting stuff. Thanks.
RG-65 says no longer available. It also says:
Coaxial Delay Line 0.15
On 12/17/12 9:40 PM, Hal Murray wrote:
jim...@earthlink.net said:
You mean RG65 http://www.awcwire.com/ProductSpec.aspx?id=M17/
34-RG65-Coaxial-Cable or RG186 http://www.awcwire.com/ProductSpec.aspx?id=RG1
86-Coaxial-Cable
Interesting stuff. Thanks.
RG-65 says no longer available. It also
Hal Murray wrote:
jim...@earthlink.net said:
You mean RG65 http://www.awcwire.com/ProductSpec.aspx?id=M17/
34-RG65-Coaxial-Cable or RG186 http://www.awcwire.com/ProductSpec.aspx?id=RG1
86-Coaxial-Cable
Interesting stuff. Thanks.
RG-65 says no longer available. It also says:
Cond. MaterialMagnet Wire Helix
(What is magnet wire, and what does helix mean and how does it effect
coax?)
Magnet wire is enamelled wire (usually copper).
I'm familiar with that usage, but I don't know why it's interesting in the
context of coax.
I think the key idea is that the
Hi Tom,
but they could have achieved the same exact result by using scientific
notation such as:
2.3E-010
or:
2.30E-010
or:
23E-011
to note the higher internal resolution in the later case.
I realize that one can easily parse these raw outputs, if one can write
python or C etc
saidj...@aol.com said:
Time-Nuts, anyone willing to write this for the benefit of all?
Does python run on Windows? If so, give me samples of input data and what
you want as output.
--
These are my opinions. I hate spam.
___
time-nuts
Yes it does.
Sent from my iPad
On Dec 14, 2012, at 10:47 PM, Hal Murray hmur...@megapathdsl.net wrote:
saidj...@aol.com said:
Time-Nuts, anyone willing to write this for the benefit of all?
Does python run on Windows? If so, give me samples of input data and what
you want as output.
On 12/14/12 8:47 PM, Hal Murray wrote:
saidj...@aol.com said:
Time-Nuts, anyone willing to write this for the benefit of all?
Does python run on Windows? If so, give me samples of input data and what
you want as output.
Sure.. there's several flavors.. I use Active Python
Suppose I want to compare the PPS outputs of 2 GPS units. The problem is
that I don't know which one will happen first.
If I feed them into the start/stop inputs of a typical timer/freq box, I
don't know which is which. If I get them wrong, the answer will be
0.99xx seconds rather than
--
From: Hal Murray
Sender: time-nuts-boun...@febo.com
To: time-nuts@febo.com
ReplyTo: Discussion of precise time and frequency measurement
Subject: [time-nuts] Comparing PPS from 2 GPS units
Sent: Dec 13, 2012 1:57 AM
Suppose I want to compare the PPS outputs of 2 GPS units. The problem is
that I
Hi
The easy way to take care of the problem is to program one of them with a cable
delay of around 500 ns. The GPS should not be outside +/-100 ns, so that's
plenty of room for a start / stop to occur. Of course that assumes that the GPS
has a programable cable delay setting.
A 500 foot
If the trailing edge of one of the pulses is reliable, you could
measure from the starting edge of one pulse to the trailing edge of
the other pulse.
It is not impossible to make an adjustable but accurate pulse delay
using a comparator or maybe a gate. How accurate does your
measurement need to
-
From: Hal Murray hmur...@megapathdsl.net
To: time-nuts@febo.com
Sent: Thursday, December 13, 2012 1:57 AM
Subject: [time-nuts] Comparing PPS from 2 GPS units
Suppose I want to compare the PPS outputs of 2 GPS units. The problem is
that I don't know which one will happen first.
If I feed
of precise time and frequency measurement time-nuts@febo.com
Sent: Thu, December 13, 2012 12:56:17 PM
Subject: Re: [time-nuts] Comparing PPS from 2 GPS units
Lastly, there are cute little delay boxes (www.ebay.com/itm/150962422699) that
might work. Not sure how stable they are at the ns level
On Dec 13, 2012, at 4:57 AM, Hal Murray hmur...@megapathdsl.net wrote:
Suppose I want to compare the PPS outputs of 2 GPS units. The problem is
that I don't know which one will happen first.
If I feed them into the start/stop inputs of a typical timer/freq box, I
don't know which is which.
On Fri, 14 Dec 2012 00:06:15 +0100, timen...@triplespark.net wrote:
On Dec 13, 2012, at 4:57 AM, Hal Murray hmur...@megapathdsl.net wrote:
Suppose I want to compare the PPS outputs of 2 GPS units. The problem is
that I don't know which one will happen first.
If I feed them into the
Hi anonymous,
the 53132A only does that for a couple of nanoseconds. Then it jumps to a
stupid value such as:
0.004 us
-0.002 us
0.999,999,993 s
It get's even better when the counter decides it doesn't have enough
resolution in frequency mode:
2,3** u
Absolutely horrible to parse,
Hi Said,
the 53132A only does that for a couple of nanoseconds. Then it jumps to a
stupid value such as:
0.004 us
-0.002 us
0.999,999,993 s
It looks like you were measuring a 1PPS pulse that was very close to the 1PPS
reference. As Hal noted when he started this thread, this is tricky.
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