The EMS61000-12C from Everfine is a Ring Wave Generator designed for ring wave immunity testing in accordance with IEC 61000-4-12. It is used to evaluate the immunity of electrical and electronic equipment against oscillatory transient disturbances caused by switching operations and power network faults.

It generates ring wave voltages with peak levels of up to 7 kV and supports output impedances of 12 Ω, 30 Ω, and 200 Ω. The instrument produces an oscillatory waveform with a 0.5 µs front time and an oscillation frequency of approximately 100 kHz, meeting international EMC immunity test requirements.

The EMS61000-12C supports positive, negative, and alternating polarity testing and offers asynchronous, synchronous, and external phase triggering. It includes a built-in coupling/decoupling network (CDN) for single-phase and three-phase power lines, enabling direct testing of AC- and DC-powered equipment.

The generator provides stable and repeatable performance and is suitable for use in EMC laboratories, certification centers, and R&D environments.