| 摘要 |
PURPOSE:To provide convenience in actual use, by displaying the measured value of an object to be measured, and computing and displaying the accuracy of the measured value at the same time. CONSTITUTION:The output signal from a measuring signal generator 10 is supplied to the object to be measured 14 through a standard resistor 12. The output thereof is given to a measuring circuit 20 comprising an operation amplifier circuit 22 and a range resistor 24. The output frequency fs from the measuring signal generator 10, a variable control signal for measuring parameters including a voltage Vs to be applied to the standard resistor 12, measured data VX of the measuring circuit 20, and a variable control signal VR of the range resistor 24 are supplied to an operation processor 16. Then the measured value of impedance and its accuracy are computed and displayed by a display device 18. Since the measured value as well as the accuracy of the measured value are displayed, the device is convenient in the actual use. |
