On Mon, 14 Oct 2019 at 19:44, yza <yzaVNA@...> wrote:
#46 : Comment
@Dr. David Kirkby from Kirkby Microwave Ltd - 14 October 2019
/g/nanovna-users/message/4890
Hello,
Thank you for your suggestion.
However, in our humble opinion, putting the name into quotes
is adequately enough to clarify the concept without disturbing
the connection with the well-known calibration technique having
it in its title.
Sincerely,
gin&pez@arg
I am *not* a metrologist, but I find this document useful
“A Beginner’s Guide to Uncertainty of Measurement”. It is written by a lady
at the National Physical Laboratory (NPL) in the UK.
I realise that you are metrologists, but with English not being your
first language, maybe you use different terms to us.
I will quote a little from that document:
“ *2.3 Error versus uncertainty*
It is important not to confuse the terms ‘error’ and ‘uncertainty’.
*Error* is the difference between the measured value and the ‘true value’
of the thing being measured.
*Uncertainty* is a quantification of the doubt about the measurement result”
At far as I am aware, you don’t know the true value of anything relevant to
the VNA. Since you don’t know the true value of anything, you can not
calculate an error.
I realise that the term “error correction” is used in by engineers using
VNAs, so I am not suggesting that you remove the word word error. But I
would suggest that you should probably be using the word “uncertainty” in
your title.
I am not following the work you are doing, so don’t know exactly what you
are doing. But I suspect that the word uncertainty should be in the title
of your document, but maybe I am mistaken.
Dave
--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United
Kingdom
