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3-5. Basic Tracker Signatures - Open and Short
In TSA, the two most basic Tracker signatures are the open and the short. The open signature
occurs when an output terminal is not connected to anything. The short signature occurs when an
output terminal is directly connected to the common terminal. In the following figures, the upper
screen represents the Tracker 2700's LCD X-Y display and the lower screen is a graphical plot of
the sine wave test signal at the output terminal showing its current and voltage relationship. The
current and voltage graphical plots shown in Figs. 3-8 and 3-10 are for illustration purposes only
and cannot be displayed on the LCD.
Figure 3-6. "OPEN" Tracker Signature On LCD Display (Horizontal Line)
Figure 3-7. Test Signal (Open Circuit) With Current And Voltage Waveforms.
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