Hi
Roger , i am agree with you , when setting 50ohm-->77.7ohm and measuring with S11 Smith function an external impédance we have always the correct impédance value displayed as expected no mater what impedance base used only smith graph or SWR or loss return can be changed , which is correct and expected , until this point all seems to be normal as expected and we are very happy with.
The strange thing occure only when trying to measure port2 with the same function without changing any think , just by hooking port2 as impedance to be measured and then we are surprised to have 77.7ohm displayed , thats means port2 hardware impedance has really changed value wich is not expected , i assume that port2 hardware is always at the same value fixed by hardware implementation to 50ohm as shown in hardware drawing and not fixed by firmware !!! Did i misunderstand some thing ?
Thanks
73s Nizar
