User's Manual

98
AC/DC Electronics Laboratory 012-05892A
®
Analyzing the Data
➀ Click on the Graph to make it active. Select “Save As…” from the File menu to save your data.
• Because the Graph displays the voltage across the 1 kΩ resistor versus the voltage across the
22 kΩ resistor, the Graph is the output current or “collector” current (I
c
) versus the input or “base”
current (I
b
).
• The slope of the linear region of the plot gives the
current gain of the transistor.
➁ Click on the “Statistics” button ( ). Then click on the “Autoscale” button ( ) to rescale
the Graph to fit the data.
➂ In the Graph display area, click-and-draw a rectangle around the linear region of the plot.
➃ In the Statistics area at the right part of the Graph, click the Statistics menu button ( ). Select
“Curve Fit, Linear Fit” from the Statistics menu.
• Optional: If a printer is available, select “Print Active Display” from the File menu.