This is a technical standard that defines the procedures for testing the immunity of electrical and electronic equipment to radiated radio-frequency (RF) electromagnetic fields. This standard provides a detailed framework for evaluating how devices perform when exposed to continuous RF fields, simulating real-world conditions where equipment can face interference form radio transmitters, mobile phones, or other wireless communication devices.

Technically, the standard requires the use of an RF generator, amplifiers, and antennas capable of producing uniform fields over a defined frequency range, typically from 80MHz to 6GHz. This frequency range is 80% amplitude modulated (AM) with a 1kHz sine wave. The test setup must make sure a consistent electromagnetic field intensity, measured in volts per meter (V/m), across the area where the equipment under test (EUT) is placed. The standard specifies that the EUT needs to be tested in an anechoic chamber or a semi-anechoic chamber to minimize reflections and make sure accurate field application.

IEC 61000-4-3 outlines various test levels of field strength, with standard levels commonly ranging from 1V/m up to 10V/m or even higher for more stringent tests. The EUT is tested in multiple orientations to account for all possible angles of exposure to electromagnetic fields. During testing, the EUT needs to be monitored for any signs of performance degradation, data errors, or malfunctions.

Figure 6-11 Radiated Immunity Test Set-up (Example)