Initial Calibration
Before the M3 Digital LCR Meter can be used for the first time, it must be calibrated. This is a simple process and requires six precision resistors. The calibration resistors provided with the M3 LCR Meter kit are 0.1% resistors with the following values: 10, 100, 1K, 10K, 100K, 1M ohms. If you have an accurate ohmmeter (0.01% accuracy or better), you can measure the value of the six calibration resistors and adjust the precise values within the calibration routine. Measure and note the value of each resistor. Remember, the accuracy of the measurements made by the LCR meter will be dependent on the accuracy of the initial calibration. If you are NOT sure of the accuracy of your ohmmeter, accept the default values. In this case add 0.1% to the basic accuracy value of the instrument.
Calibration also requires the 4-clip cable provided with the kit or a true Kelvin clip cable with HD/HS (High Drive/High Source) terminals connected to one clip, LD/LS (Low Drive/Low Source) terminals connected to the second clip, and the cable shields connected to ground at the plug end. The calibration sequence only needs to be performed once. The values derived during the calibration routine are stored in non-volatile memory and will remain stored in the instrument until the calibration routine is performed again.