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Re: 1.2.40 strange displayed S11 Smith value


 

I did not intend to change the measurement, only the displayed value. The
measurement is unchanged.

Dave - W?LEV

On Thu, Jan 23, 2025 at 12:39?AM Roger Need via groups.io <sailtamarack=
[email protected]> wrote:

On Wed, Jan 22, 2025 at 01:31 PM, W0LEV wrote:


In doing so, you have reassigned the center of the Smith Chart to 77.7
ohms. Therefore, even if your are measuring a matched 50-ohm resistor, it
will read 77.7-ohms. Set it to 200 ohms, and a 50-ohm resistor will read
200 ohms. Set it to 50-ohms and it will read 50-ohms.
This is incorrect. Changing the system impedance will NOT change the
measured impedance value. It only changes metrics based on Zo like Smith
Chart plot, Return Loss & SWR.






--

*Dave - W?LEV*


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Dave - W?LEV

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