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. Set it to "1",
unity, and you have a normalized chart that can read, after scaling
properly for the normalization, anything you use.
Dave - W?LEV
On Wed, Jan 22, 2025 at 7:41?PM Team-SIM SIM-Mode via groups.io <sim31_team=
[email protected]> wrote:
Hi all
something doesn't seem to be working very well, the most recent firmware
1.2.40 of DiSlord installed on SEESII H4, I really appreciated the
characteristic impedance conversion function for SWR measurements and for
the Smith graph, but the impedance values ??of port2 should not change in
fact they are what they are.
but by measuring the input of port2 with the S11 Smith function it gives
77.7 Ohm as long as the conversion value 50-->77.7 Ohm is configured while
it is supposed to give 50 Ohm, then by putting a 50 Ohm load on S11 Smith
it displays the value 50 Ohm,
So the Port2 impedance seems has really changed impedance when we put 50
Ohm --> 77.7 Ohm if not how can we explain this displayed value which does
not match our 50 Ohm prediction ?
73's Nizar
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*Dave - W?LEV*
--
Dave - W?LEV
