Table 5-5 lists the range of capacitance covered by each of the 12 range and frequency combinations for the Tracker 2000. The lowest value of capacitance in each combination will produce a signature of a very narrow horizontal ellipsoid. Capacitors with less of a value than these will appear to be an open. The uppermost value of capacitance in each combination will produce a very narrow vertical ellipsoid signature. Capacitors of greater value than these will appear as a vertical line signature of a short circuit.

Table 5-5. - Min/Max Capacitance Values

TEST FREQUENCY

Testing Inductors

Inductors, like capacitors, produce an elliptical signature on the Tracker 2000. Figure 5-35 shows you the signatures produced in each of the 12 range and frequency combinations by a 250mH inductor.

Figure 5-35. - Signatures of a 250mH inductor.

Ferrite inductors can also be checked using this unit; however, the signature produced will be different. Ferrite inductors operate well at high frequencies, but saturate at low frequencies. Figure 5-36 shows the signature of a 490mH ferrite inductor tested at 60 Hz. In low and medium 1, you can see that the signature shows distortion. However, in medium 2 and high ranges, the impedance of the inductor is low compared with the internal impedance of the Tracker 2000, so the signatures are a split vertical trace. Figures 5-37 and 5-38 show the same 490mH inductor being tested at 400 Hz and 2000 Hz.

Figure 5-36. - Signatures of a 490mH ferrite inductor tested at 60 Hz.

Figure 5-37. - Signature of a 490mH ferrite inductor at 400 Hz.

Figure 5-38. - Signature of a 490mH ferrite inductor at 2000 Hz.