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31 : On the Uncertainties of the "Standards" - Part II
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23 : On the Uncertainties of the "Standards" - Part I - 30 September 2019
/g/nanovna-users/message/3517

@ Jeff Anderson
/g/nanovna-users/message/3294 - 30 September 2019
/g/nanovna-users/message/3294 - 28 September 2019

Hello Jeff.

We are terribly sorry for this delayed reply - please, accept our apologies.
Our excuses have to obviously do with the needed work for:

30 : our final report 1 :
/g/nanovna-users/message/3989 - 4 October 2019

Well, after all that said, here are our answers:

JA : "For the Open and Short standards, in what terms (or parameters)
do you define each standard's two uncertainties?"

GZ : Let's look at the [inut.txt] file contents, line-by-line:

(1st):1
(2nd):101
(3rd): -0.01 0.029 -0.01 2. 2.
(4th):1

of which their meaning is as follows:

(1st):(Fields:1):

A flag defining what will be computed and extracted:

0 : complex Gamma
1 : complex Z

(1st) : in the test file [input.txt] : 1

(2nd):(Fields:1):
Number of the above values that will be computed and extracted

(2nd) : in the test file [input.txt] : 101

(3rd):(Fields:5):(From left to Right - below as : a,b,c,d,e):

Uncertainty Data as they are given by the Manufacturer
of the "standards" :

The first 3 fields are for the Magnitude -pure number- of
SHORT, LOAD, and OPEN in this order, and

the last 2 fields are for the Argument -in Degrees-
of SHORT and OPEN, in this order

- there is no need for the Argument of LOAD, because
this is and Undefined one -

(3rd)(a): For the Magnitude of SHORT : this value is its
Lower Error Bound and thus a Negative number must
be given - There is no need for an Upper Error Bound,
because it is always 0, in an attempt to keep the its
Computed Values as close as possible to the the
Boundary of the Unit Circle

(3rd)(a) : in the test file [input.txt] : -0.01

(3rd)(b) : For the magnitude of LOAD : this value is its
Upper Error Bound and thus a Positive number must
be given - There is no need for a Lower Error Bound,
because it is always 0, in order to be the Center of
the Unit Circle which lies at the Origin

(3rd)(b) : in the test file [input.txt] : 0.029

(3rd)(c) : For the magnitude of OPEN : exactly the
same as in (3rd)(a)

(3rd)(c) : in the test file [input.txt] : -0.01

- But, the values in (a) and (c) may differ -

(3rd)(d) : For the argument of SHORT : this value
is the absolute value of its Symmetrical, LOWER
and UPPER bounds and thus a Positive number
must be given

(3rd)(d) : in the test file [input.txt] : 2

(3rd)(e) : For the argument of SHORT : exactly
the same as in (3rd)(d)

(3rd)(e) : in the test file [input.txt] : 2

- the values in (d) and (e) may differ -

(4th) : Inaccuracy of all the readings as
number of questionable units in the Last
Significant Digit

(4th) : in the test file [input.txt] : 1

Best regards,

gin&pez@arg

31