Select “Impedance Calibration” under the “Impedance Analyzer” menu and follow the instructions to calibrate the system at 1k Ohms using the supplied ±0.1% calibration resistor. The software will test the resistor and plot the results. Verify that the value displayed in the RE field at the right side of the screen is very close to 1000 Ohms. If not, repeat the calibration procedure. A measured value between 995 and 1005 Ohms is normally expected.