EMERSON KJ2231X1-EC1 Terminal resistance module

The selection of a shielding material can be done either by choosing a possible metal of a given thickness and then determining if the shielding effectiveness is equal to or greater than the field attenuation desired, or starting with desired attenuation, determining what thickness of metal sheet or what type of screen is required. Either approach is acceptable. (a) The first step in the selection of a shield type and material is to determine the nature of the field by determining whether it is an electric field, magnetic field, or a plane wave. (b) Compute the wavelength, or the incident signal or signals and measure the location of the sources. From this a determination is made of the incident field and the absorption and reflection loss of the material selected for a plane wave.

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