22189-1

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The 22189-1 application field links electronic, health care, medical and other industries, which are subject to high levels of electrical and electromagnetic interference (EMI). The 22189-1 aims to provide test methods and procedures for measuring the radiated and conducted emissions from any component or system within a regulated environment.

The 22189-1 application field also includes a broad range of electronic products and industries, from medical equipment to radio communications. Through application of the 22189-1, manufacturers can demonstrate compliance with applicable EMC requirements.

The 22189-1 working principle is based on the use of specialized test equipment to measure the level of electromagnetic interference (EMI) emitted from products. Generally, products are tested using a Radio Frequency (RF) test chamber, which is equipped with EMC measuring instruments capable of measuring frequencies up to 18GHz.

EMI test set-ups required under the 22189-1 are generally quite extensive, involving the use of custom-made fixtures, filters, absorbers and other devices, depending on the nature of the product and the application. The test procedure is designed to ensure that emissions are accurately measured and data collected while operating within predetermined limits.

The 22189-1 working principle also defines the limits for the different types of emissions: Radiated Emissions, Conducted Emissions, and Electrostatic Discharge (ESD). These limits are designed to ensure that emissions do not cause interference to any other equipment operating nearby; and that the product is safe to use in the required application.

The most common type of test under the 22189-1 is conducted to measure the level of emissions from products. Generally, the test is performed in multiple frequency bands between 150kHz to 18GHz. The test procedure involves ascertaining the emissions level of the product before and after shielding or absorbing materials have been applied. The test is then repeated with the shielding or absorbent material installed.

The EMI test results from the 22189-1 test are generally compared to the known values for similar products of a similar type. If the emissions are over the specified limit, additional shielding or absorbents may be required, or the product will fail to comply. Products certified under the 22189-1 are subject to annual follow up tests to ensure that they continue to comply.

The 22189-1 application field and working principle are essential for ensuring compliance in the electronic, health care, medical and other industries subject to high levels of EMI. The use of specialized test equipment and EMI test set-ups enable manufacturers to demonstrate their compliance with applicable standards and regulations.

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