Meaning
South Korean technical standard for electromagnetic emission limits establishes the requirements that electronic equipment designed for residential and light-industrial environments must meet. Under the provisions of KS C 9610-6-3, devices are evaluated to ensure they do not emit conducted or radiated electrical noise that could disrupt the operation of other electronic devices nearby. This standard protects the local radio frequency spectrum from degradation caused by consumer electronics.
Testing Environment
Compliance evaluations occur inside specialized semi-anechoic chambers to block out electromagnetic signals. Technicians position the equipment on a non-conductive table while monitoring the emissions using a calibrated antenna or a line impedance stabilisation network. This setup ensures that all measured emissions originate solely from the device under test.
Compliance Target
The limits defined by this standard cover both radiated emissions from the enclosure and conducted emissions through the power cables. High-frequency noise must remain below the specified decibel-microvolt levels across the frequency range of thirty megahertz to one gigahertz. The standard requires these tests to be conducted during the maximum operational state of the product to capture the worst-case scenario.
Any failure to meet these thresholds during the initial scan requires the addition of filtering components such as ferrite beads or bypass capacitors before the product can be legally distributed in South Korea.
Integration Impact
Integrating pre-tested modules into a single product requires careful board-level design to maintain compliance with this standard. Proper shielding and grounding of the power lines prevent the high-frequency clock signals of the module from leaking into the main power bus.
