开云体育

Thanks, this helps.

As I understand now: they determine the embedded port parameters by using the equivalent of a one-port calibration with 3 known terminations, then express the embedded port parameters in the response measured for these 3 terminations, thus allowing the identification of regions of uncertainties in these measurements so these can be translated into uncertainties of the embedded port parameters (the uncertainty derivations) and this gives the uncertainty of the measurements done with the one port VNA?


--
NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK

In addition, ISTR that the Gnu Octave development team considers any lack of functionality as compared to MatLab to be a bug.

Sent from a small flat thingy

Eric;

It might be helpful to review msg #6670. GIN&PEZ presents the derivation of the G-mini equation which is the one-port measurement model, which they summarize in msg #6798.

That one port model, based on an embedded S parameter matrix consisting of an (s, o, l, and DUT) terminated LeastVNA (virtual) reflection port, was then rearranged, then presented, and subsequently revised (corrected) in msg #7272 as a derivation, of a two port indirect measurement model that relies only on the single one port set of reflection measurements... not the independent S11, S22, and thru measurements in common use today.

An important component of their work is that all uncertainties are included in the calculations, and the s, o, l standards used are all considered nominal values. Regions of uncertainty are derived from the results but are defined independently, as a graphical mapping surrounding each measurement based on easily defined real boundaries.

This is my understanding to this point subject to forthcoming corrections by GIN&PEZ.

I have not yet studied the uncertainty derivations in detail, but the concept appears to be sound. I have independently coded the G-mini equation, and have found it to be spot on in agreement with the corrected output results of 3 independent analyzers; the NanoVNA, an N2PK VNA, and an AQRP VIA of similar architecture to the NanoVNA.

I personally find it helpful to return to and review previous posts periodically as I begin to sense that I am gaining in my understanding. I find the communications becomes more clear and it often exposes important details I missed altogether. The process does take a lot of additional effort on my part, but I find it beneficial in areas that the language fails to translate precisely.

I hope you find at least some part of this to be helpful.

--
73

Gary, N3GO

Please have a look here:


Quote: "Hardware design material is disclosed to prevent bad quality clone. Please let me know if you would have your own unit."


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NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK

thats fair enough but why cant it be offered on an as is basis warts and all with no support,at least give others a chance to work with it!

I don't think your thoughts about a person's ego is of any relevance
whatsoever to this mailing list.

I understand that Joe does not have the time nor interest in supporting his
software - and knowing as I do the number of support requests that can
easily arise from making a piece of software for the NanoVNA - ;-) - I
fully understand where he's coming from. :-)

--
Rune / 5Q5R

the guy who did that on youtube has a long thread on eevblogg,for some reason he wont release the s/w has been asked about releasing it a few times but always replys with what looks like b.s lame excuses,think its more about the guys ego,just my thoughts.

That seems unlikely. On the contrary; the development to move it from
300MHz to 900MHz would likely not have happened, and the product would be a
largely unknown hobby project - akin to what it was a year ago.

Open sourcing things like this creates innovation in the community. I'm
still amazed at the animosity I see against being open about one's
inventions and ideas in the amateur radio community - I would have thought
the nature of it would be more conducive to openness.

--
Rune / 5Q5R

edy555 decided to open source SW AND HW to avoid bad clones.

--
NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK

In view of the way this thing has took off,i imagine the developer is miffed about making it open source,would of thought there would have been a fair sum of money earnt if not.

While not fully compatible with LabView you can use GNU Octave (free) to very quickly create all kind of nice instrument control and computational applications.
Octave has (almost?) all of the computational functions of LabView and it also has UI capability so you can quickly create a user interface to control you device.



--
NanoVNA Wiki: /g/nanovna-users/wiki/home
NanoVNA Files: /g/nanovna-users/files
Erik, PD0EK

While looking up the various versions of LabVIEW, I came across this webpage:



Where it was mentioned that National Instruments is going to be developing a free 'community' version of LabVIEW.

Please refer to the webpage for further info.

With regard to historical references, while edy555 has not followed up on his original kit with a fully manufactured product he has remained at the forefront of the NanoVNA firmware evolution and also maintains the NanoVNA.py Python class module.

His GitHub site where he maintains the firmware repository is at: . I've assumed by association that ttrftech and edy555 are pseudonyms for the same person.

-Herb

My company has the full $3,000 version of LabView. However, there's a VERY
INEXPENSIVE version available for "Home" use at $49 from Digilent:



It is the 2014 version - but for most hobbyists it's all you need.

Cheers,
Lyle
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On Tue, 10 Dec 2019 13:59:35 -0800
"aparent1/kb1gmx" <kb1gmx@...> wrote:

No kidding... I believe there is a student version that only breaks the
bank. Base edition is 399$, full is over 3100$ and up...

It is Labview a National Instruments product and its pretty nice tool for
building test or measurement systems and even simulations. I've used it
with PNAs to build step and repeat measurement systems for antennas
ranges.

--
73 NM6Y
Bickley Consulting West Inc.


"Black holes are where God is dividing by zero"


--
73? ?NM6Y
Bickley Consulting West Inc.


"Black holes are where God is dividing by zero"

That LabVIEW application was written by a gentleman over at eevblog and he is not releasing it to anyone. It runs on LabVIEW.?



On Tue, 10 Dec 2019 at 4:18 PM, Hans , PA3HGT via Groups.Io<pa3hgt@...> wrote: Hello all,

I saw on you tube the nice software for the NanoVNA : NanoVNA Labview :
I am very curious to try it, is it where i can download this program.
I searched but no succes ;-(

Thanks in advance !

No kidding... I believe there is a student version that only breaks the bank.
Base edition is 399$, full is over 3100$ and up...

It is Labview a National Instruments product and its pretty nice tool for
building test or measurement systems and even simulations. I've used it
with PNAs to build step and repeat measurement systems for antennas
ranges.



--
-----------------
I do not accept private email due to forum scraping groups.io

Hello PJH,
thank you for asking about my involvement. My involvement is "only"
software, yes. ;-) I have had some pokes at the firmware, but nothing
published - it was these attempts (at increasing the number of data points)
that led me to develop NanoVNA-Saver in order to solve that problem. It was
further prompted by the lack of any open source and community-supported
software for the NanoVNA. By now there is a number of software options -
but as far as I can tell, still only one that's licensed as "free software".

--
Rune / 5Q5R

It appears the software is National Labview- prepare to take out a mortgage.

Dale W4OP

I believe LabView is a product of National Instruments. I hope I'm wrong
in this case, but anything from National Instruments costs lost of green
backs ($$$).

Dave - W?LEV

On Tue, Dec 10, 2019 at 9:18 PM Hans , PA3HGT via Groups.Io <pa3hgt=
[email protected]> wrote:

Hello all,

I saw on you tube the nice software for the NanoVNA : NanoVNA Labview :

I am very curious to try it, is it where i can download this program.
I searched but no succes ;-(

Thanks in advance !

--

*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*

Hello all,

I saw on you tube the nice software for the NanoVNA : NanoVNA Labview :
I am very curious to try it, is it where i can download this program.
I searched but no succes ;-(

Thanks in advance !