| 摘要 |
Disclosed is improved apparatus and an improved method for use in testing the susceptibility of electrical apparatus to magnetic fields, wherein current is provided to an antenna for producing a directional magnetic field within each of a plurality of known ranges of intensity and is further varied within each of the respective ranges, as required, to obtain readings corresponding to a voltage falling within a range of voltages which are capable of being sensed and therefore measured by other than a narrow-band voltmeter.
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