The probe to the vector impedance meter is a coaxial cable probe that has inherent inductance and capacitance per unit length. The inductance can be neglected. An equivalent circuit model for this configuration that includes artifacts of the measurement system as well as the circuit under investigation is shown in Figure 3. The capacitance C is the interwinding capacitance of the lumped inductor, R is the series winding resistance, and L is the inductance. L s and R s are the series inductance and resistance of the wiring that connects the inductor L to the impedance meter.
C p is the shunt capacitance of the probe of the vector impedance meter.
This equivalent circuit model is valid over the frequency range 0.5-100 MHz. The values of all the model parameters will be obtained from measurements, and comparisons made between the model and measurements. Experimental Procedure First determine the values of L, R, L s , and R s from measurements at 1 kHz with the LCR meter. Use the LCR meter and measure the series inductance and resistance at 1 kHz. Connect the two ends of the flexible lead wires together and measure the series L s and R s of these leads.