Μετρήσεις με Network Analyzer

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pez
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Εγγραφή: 03 Ιούλ 2016, 01:51
Ονομα: pez
Τοποθεσία: eu
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59 - errors of "error" models

Δημοσίευσηαπό pez » 21 Σεπ 2019, 16:07

.
to nanovna-users @ groups.io - from yza via Groups.Io :
.
-1 : error model(s)

Wednesday, September 18, 2019 00:24Hello,
Could you clarify for us, please, if is there any certain knowledge
available regarding the specific error model(s) that NanoVNA uses ?

Sincerely,

yin&pez@arg

-1 : error model(s)
.
0 : errors of "error" models

Saturday, September 21, 2019 04:10

Hello,

We just uploaded the current version:
derdei20190921.7z

Sincerely,

yin&pez@arg

0 : errors of "error" models
.
1 : Re : errors of "error" models

Saturday, September 21, 2019 11:55

Hello,

We just uploaded the Agenda of 31st ANAMET Meeting:
yza31anamet.png

and changed [.htaccess]:
www.op4.eu/code/

Sincerely,

yin&pez@arg

1 : Re : errors of "error" models
.
2 : Re: [nanovna-users] errors of "error" models

Saturday, September 21, 2019 19:12

Hello,

Allow us, please, to we report that in order to be adequately
prepared to estimate the uncertainty in NanoVNA
measurements using complex differential error regions
and real differential error intervals, that is to attempt for the
first time scientific measurements using NanoVNA with the
only available method we know and with the currently
available software tools, we need, in addition to a correctly
working version of the interpreted foss [maxima-cas] to run
the /f/l/o/s/s/ [derdei.mc], a foss compiled language to we
be able to independently cross-verify the computation
results, and as a such one we intend to use for now the
[openwatcom][fortran].

Also, allow us, please, to we report that in a correctly working
operating system [wxp64p&sp2] we know that the following
versions of these two languages are respectively the last
ones which are correctly working under the 32-bit emulation
mode of an AMD x86-64 cpu:

[maxima-cas][5.38.1]

[openwatcom-fortran][1.9]

Sincerely,

yin&pez@arg

2 : errors of "error" models
.
3 : Re: [nanovna-users] errors of "error" models

Monday, September 23, 2019 04:23

Hello,

We just uploaded the currently available version of /F/L/O/S/S/ Maxima code:
derdei20190923.7z

as well as, the currently available version of its documentation:
ComplexDifferentialErrorRegionsSoftwareTools20190923.pdf

for the Uncertainty Estimation of Full One-Port VNA Measurements.

Next to come : the currently available version of /F/L/O/S/S/ FORTRAN code.

Sincerely,

yin&pez@arg

3 : Re: [nanovna-users] errors of "error" models
.
4 : on the comparisons

Monday, September 23, 2019 17:53

Hello,

Allow us, please, to point out that to be
possible to the slightest a comparison
between measurements regarding
nanovna and/or vna, these measurements
should be accompanied by an estimation
of their uncertainty, as well as by a clearly
stated way of its calculation.

Sincerely,

yin&pez@arg

4 : on the comparisons
.

pez
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60 - [NanoVNA] ~ [VNA] : Το Τελικό Report 1 -

Δημοσίευσηαπό pez » 04 Οκτ 2019, 19:34

30 : our final report 1

29 : ann : our nanovna will be evaluated tonight :

hello all,

this is our final report on the comparison of our
[nanovna] and [vna] in terms of frequency

1 : for nominal values without uncertainty :

red : nanovna - blue : vna

r :
Εικόνα

x :
Εικόνα

after all that said, accept, please, our humble - but sincere - congratulations

sincerely yours,

gin&pez@arg

30

pez
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Εγγραφή: 03 Ιούλ 2016, 01:51
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61 - [NanoVNA] ~ [ VNA] - Πως Κάναμε την Σύγκριση

Δημοσίευσηαπό pez » 17 Οκτ 2019, 00:57

.
- Χαίρετε ! - Δεν χαθήκαμε - Είμαστε ακόμα "εκεί" :

https://groups.io/g/nanovna-users/topic/errors_of_error_models/34237712

- - - - -

#50 : The Full Final Report 1 :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Nominal Values Zinp = ( Rinp , Xinp )
of our Standard [ref2007box], in terms of
frequency, using [NanoVNA] and [VNA]
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[NanoVNA] ~ [VNA] Comparison

#30 : our final report 1 - 6 October 2019 :
https://groups.io/g/nanovna-users/message/4179

- also @Gary O'Neil - 8 October 2019 -
https://groups.io/g/nanovna-users/message/4385


Hello,

Allow us, please, to present the steps by which we got the
results of our final report 1.

- - - - - - (c) gin&pez@arg (cc-by-4.0) 2019 : start - - - - - -

First of all, in order to set up a Somehow Reliable Comparison
between our [NanoVNA] and our [VNA], we decided to put aside
the sma/M SLO "Standards" and use our TypeN/M 50 Ohm SLO
'Standards', as well as our Standard [ref2007box], to both our
[NanoVNA] and [VNA]. So, to get the Same Reference Plane
for both instruments, we used our [sma/M-to-typeN/F 50 Ohm]
adapter directly connected to [CH0] port of [NanoVNA].

After that, since we already had our [VNA] results under these
very same SLO+[ref2007box] conditions, we used only Putty to
collect the measurements from [NanoVNA] and proceed step-by-step
to the following graphics:

I/III
The four 4 measurements : ( s, l, o, gamma ) needed
for our expression of Gamma:

#42 : The compact SLO formula for [AnyVNA]:
https://groups.io/g/nanovna-users/message/4747
12 October 2019

by using our [NanoVNA] : RED points in the following Figures,
as well as by our [VNA] : BLUE points in the same Figures :

I.1/4 : SHORT CIRCUIT Measurements : s
Magnitude : Εικόνα
Argument : Εικόνα

I.2/4 : (MATCHING) LOAD Measurements : l
Magnitude : Εικόνα
Argument : Εικόνα

I.3/4 : OPEN CIRCUIT Measurements : o
Magnitude: Εικόνα
Argument : Εικόνα

I.4/4 : Our Standard [ref2007box] : gamma
Magnitude: Εικόνα
Argument : Εικόνα

II/III
The Nominal Value Gamma of Our Standard [ref2007box]:

By substitution of the above measurements - from I.1/4 to I.4/4 -
to our expression:

Εικόνα

we got for the Nominal Value Gamma of Our Standard [ref2007box],
in terms of frequency, once more:

RED points in the following Figures by using our [NanoVNA],
BLUE points in the same Figures, by using our [VNA]:

Magnitude : Εικόνα
Argument : Εικόνα

III
The Nominal Values of Zinp for Our Standard [ref2007box]:

By using the well-known formula :

Zinp = Zo*(1+Gamma)/(1-Gamma)

where Zinp and Gamma are, in general, Complex variables
and Zo is the Real Nominal Value = 50 Ohm

we got the two Parts of Zinp, as follows:

Real Part : Εικόνα
Imaginary Part : Εικόνα

#30 : our final report 1 - 6 October 2019 :
https://groups.io/g/nanovna-users/message/4179

- - - end : (c) gin&pez@arg (cc-by-4.0) 2019 - - - - - - - - - -

Sincerely,

gin&pez@arg

50#

View/Reply Online (#5061):
https://groups.io/g/nanovna-users/message/5061

- - - - -

- Ευτυχείτε ! -
.


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