The Haefely ECOMPACT4 is an economical EMC impulse generator to perform precompliance testing and evaluation to IEC 61000-4-4 (EFT/Burst) and IEC 61000-4-5 (Surge), and IEC 61000-4-11 (Dips and Interrupt), and IEC 61000-4-8 & IEC 61000-4-9 (AC/Surge Magnetic Field).