Main Contents of EMS Testing:
ESD - Electrostatic Discharge Immunity Testing
RS - Radiated Radio Frequency Electromagnetic Field Immunity Testing
CS - Conducted Disturbance Immunity Testing Induced by Radio Frequency Fields
DIP - Voltage Dips, Short Interruptions and Voltage Variations Immunity Testing
SURGE - Surge (Impact) Immunity Testing
EFT - Electrical Fast Transient Burst Immunity Testing
PFMF - Power Frequency Magnetic Field Immunity Testing
Definition of Spurious Emissions: It refers to the radiation (i.e., remote radiation) at discrete frequencies other than the carrier frequency and the sidebands and adjacent channels caused by normal modulation and switching transients when modulated by a standard test signal. Spurious emissions can be divided into two types according to their sources: conducted type and radiated type.
Conducted Spurious Emissions: It refers to the level power of any discrete signal measured on a 50-ohm load at the antenna connector.
Radiated Spurious Emissions: Spurious disturbances caused by the enclosure, structure, and interconnection cables of the test equipment. The preferred test condition is carried out in an anechoic chamber or outdoors.
RS - Radiated Radio Frequency Electromagnetic Field Immunity Testing
CS - Conducted Disturbance Immunity Testing Induced by Radio Frequency Fields
DIP - Voltage Dips, Short Interruptions and Voltage Variations Immunity Testing
SURGE - Surge (Impact) Immunity Testing
EFT - Electrical Fast Transient Burst Immunity Testing
PFMF - Power Frequency Magnetic Field Immunity Testing
Definition of Spurious Emissions: It refers to the radiation (i.e., remote radiation) at discrete frequencies other than the carrier frequency and the sidebands and adjacent channels caused by normal modulation and switching transients when modulated by a standard test signal. Spurious emissions can be divided into two types according to their sources: conducted type and radiated type.
Conducted Spurious Emissions: It refers to the level power of any discrete signal measured on a 50-ohm load at the antenna connector.
Radiated Spurious Emissions: Spurious disturbances caused by the enclosure, structure, and interconnection cables of the test equipment. The preferred test condition is carried out in an anechoic chamber or outdoors.
Requirements of the EMC Directive:
Relevant Standards and Testing Types for Industrial Products
- EN 55011: Limits and methods of measurement of radio interference characteristics of industrial electrical device
- EN 50081-2: Electromagnetic compatibility-Generic emissions standard Part 2: Industrial environment
- EN 50082-2: Electromagnetic compatibility-Generic immunity standard Part 2: Industrial environment
EMI/Electromagnetic Interference Testing
- CE (Conducted Emission)/Conducted Emission Testing: EN 55011
- RE (Radiated Emission)/Radiated Emission Testing: EN 55011
EMS/Electromagnetic Immunity Testing
- CS (Conducted Susceptibility)/Conducted Immunity Testing: EN 61000-4-6
- RS (Radiated Susceptibility)/Radiated Immunity Testing: EN 61000-4-3
- ESD (Electrostatic discharge)/Electrostatic Discharge Immunity Testing: EN 61000-4-2
- EFT/Burst (Electrical fast transient)/Electrical Fast Transient Immunity Testing: EN 61000-4-4
- PFMF (Power frequency magnetic field)/Power Frequency Magnetic Field Immunity Testing: EN 61000-4-8
- Surge/Lightning Surge Immunity Testing: EN 61000-4-5
- PQF (Voltage dips, interruption and variation)/Voltage Transient Immunity Testing: EN61000-4-11
Relevant Standards for Other Products
- EN 55013: Applicable to broadcast receivers and associated equipment
- EN 55014: Applicable to household appliances and portable tools
- EN 55015: Applicable to lighting products