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| ETI's EMI/RFI Test Equipment and ChambersMost of ETI's competitors design and manufacture their products for FCC, Part 15, Class A EMI/RFI protection, which by our standards are relatively easy to meet. Because our clientele have applications requiring Mil Std 461 which are far more stringent, ETI has its own EMI/RFI test chambers, antennas, load impedance stabilization networks, spectrum analyzers and software to design and qualify ETI's products to commercial, industrial and military standards including FCC, Mil Std as well as European standards.
A variety of RF antennas are used to measure radiated emissions over the frequency spectrums required. These current transformers are used to measure conducted emissions.
In order to limit any interference for external RF influences including radio and TV stations, the test unit along with the antennas and current probes are placed inside a shield room that minimizes external signals. To limit conducted interference through the power lines, specialized impedance networks (LISN) are installed ahead of the tested equipment.
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