The SmithPlot Utility allows you to create a Smith Chart to use for your network designs. When you run it, it asks you to enter a decimal value for AR, the aspect ratio, or to accept the default value. The correct value of AR should allow a reasonably circular Smith Chart to be drawn.


When you choose "(3) SmithPlot Utility" from the Main Menu, either by pressing "3," or by using the "F3" function key, you'll enter the SmithPlot Utility. After an introductory message, you'll be asked to enter a value for AR, the aspect ratio, or to click <Enter> to accept the default value for your display.

The recommended procedure is for you to first press <Enter> and accept the default value. If the Smith Chart looks reasonably good, save it, if not, experiment with different, (slightly smaller or larger), values until you are satisfied.

We've found that for Windows systems using the 'Windows' setting of (6), AR = 0.75 to 0.80 work well on 800 X 600 or 1024 X 768 display settings.

The adjustment range for circularity is limited, because of the need to properly position marker text around the perimeter of the Smith Chart. The nominal values of AR given, and the adjustment range provided, should allow you to achieve reasonable results.