Dave - LogMag for S11 just sits there at 10db/0.05db no matter what connector i put on the unit, OPEN, SHORT or LOAD. It doesn't fluctuate at all. Smith Chart stays at -133mOhms 521nH. No fluctuation using any of the three, OPEN, SHORT or LOAD.
No other traces for S11.
The screen also shows two S21 values. LogMag for S21 shows a constant 10db but the number next to it is fluctuating all over the place, typically between -70 and -99. Also below LogMAG it shows Phase Angle. It shows 90 degrees and to the right of that is another angle that is fluctuating all over -110 to +10 and many values in between over and over randomly.
I didn't tell the thing to show S21 values at all. It just did it.
John
