3-
6
Figure 3-8. "SHORT" Tracker Signature On LCD Display (Vertical Line).
Figure 3-9. Test Signal (Short Circuit) With Current And Voltage Waveforms.
3-6. Four Basic Component Tracker Signatures
All Tracker signatures are a composite of one or more of the four basic component signatures
which are: resistance, capacitance, inductance and semi-conductance. Refer to Fig 3-11. Each
one of these basic components responds differently to the Tracker 2700's test signal.
Recognizing these four basic unique signatures on the LCD display is one of the keys to
successful TSA troubleshooting. When components are connected together to form a circuit, the
signature at each circuit node is a composite of the basic component signatures in that circuit. For
example, a circuit with both resistance and capacitance will have a signature that combines the
Tracker signatures of a resistor and capacitor. The signature of a resistor is always indicated by a
straight line at an angle from 0 to 90 degrees. The signature of a capacitor is always in the form
of a circle or ellipse shape. The signature of an inductor is also a circle or ellipsoid shape, that
may also have internal resistance. Finally, the semiconductor diode signature is always made up
of two or more linear line segments that most of the time form an approximate right angle. Semi-
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