| 摘要 |
PURPOSE: A device for correcting errors of a digital signal processing device is provided to effectively remove the effect of an eddy current due to the alternative current source and the peripheral conductive material from the output of the magnetic sensor, thereby improving the resolution power in the gradient output. CONSTITUTION: A device for correcting errors of a digital signal processing device includes a pair of magnetic sensors(21,22), a pair of driving circuit(23,24) for driving each of the magnetic sensors(21,22), respectively, a pair of analog to digital(A/D) convertors(25,26), a signal processing block(27) and an output displaying block(28) for outputting a gradient signal. In the device, the A/D convertors(25,26) convert the analog signals outputted from the driving circuits(23,24) into a pair of analog signals, respectively. The signal processing block(27) makes the gradient signal corrected in the error by receiving the digital signals.
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