A camera body including a camera CPU, a detection switch and an interchangeable lens having a lens CPU are provided. Spectrally shaping an audio signal means modifying a frequency spectrum of the audio signal. On the other hand, in consideration of a current value and irradiation energy of a charged particle beam, an electric field on the surface of the inspection wafer, emission efficiency of the secondary electrons and back scattered electrons, and the like, an electric resistance and an electric capacity are determined so as to coincide with those in the inspection image. A pair of transmission lines of conductive traces is formed on the multilayer dielectric substrate coupled to a respective slot.