Certification and Registration
Introduction to EMC Testing for Audio and Video Products
Category:
EU CE-EMC
AV audio and video products are widely used in today’s society for entertainment, education, office work, and other applications. Affected by the pandemic, an increasing number of consumers have relied on audio and video devices for learning and professional tasks, highlighting their growing importance. With the development of 5G and AI technologies, AV audio and video products have further evolved into key entry points in the internet era. During the rapid development of AV products, their electromagnetic compatibility (EMC) has also received increasing attention worldwide.
Electromagnetic Compatibility (EMC) of AV Audio and Video Products includes electromagnetic interference (EMI) and electromagnetic immunity (EMS).
To address electromagnetic interference (EMI) and electromagnetic immunity (EMS) issues in AV audio and video products, Europe has established specific requirements for the electromagnetic compatibility of these products. They must comply with applicable EMC standards and bear the CE marking before being sold in the European market.
Note: Countries where the CE marking is valid: European Economic Area (EEA), including the 27 European Union member states, Germany, Liechtenstein, Iceland, and Norway.
EMC Applicable to certified AV audio and video products include:
Speakers, audio and video teaching equipment, video projectors, video cameras and monitors, power amplifiers, DVD players, turntables and CD players, CRT TVs, LCD TVs, tape recorders, radios, etc.
AV audio and video products European EMC standards mainly include the following:
|
EMC Standard |
Test Content |
Test Method |
Requirements |
|
EN 55032 |
RE Radiation interference |
EN 55032:2015 |
30Hz–230MHz:40dB( Quasi-peak); 230–1000MHz:47dB( Quasi-peak) |
|
CE Conducted interference |
EN 55032:2015 |
0.15–0.5 MHz: 66~56 dB ( Quasi-peak), 56–46 dB (average); 0.5–5 MHz: 56 dB ( Quasi-peak), 46 dB (average); 5–30MHz:60dB( Quasi-peak, 50 dB (average) |
|
|
EN 61000-3-2 |
Harmonic Harmonic current interference |
EN/IEC 61000-3-2:2019 |
A Product category standards (see Appendix 1 for details) |
|
EN 61000-3-3 |
Flicker Voltage Fluctuations and Flicker |
EN 61000-3-3:2013 |
Pst( Short-term flicker index ≤ 1.0; Plt( Long-term flicker index ≤ 0.65; Td(t)≤500ms ； dmax≤4% ； dc≤3.3% |
|
EN 55020 |
RS Radiation immunity |
EN 61000-4-3:2006+A1:2008+A2:2010 |
3 V/m, 9 MHz, Duty cycle 1/8, Class A |
|
Anti-input interference |
EN 55020:2007 |
Immunity to Input Disturbances (S1 Test) |
|
|
Radio-frequency voltage immunity |
EN 55020:2007 |
Main Power / Speaker / Headphone Terminal: 0.15–30 MHz:130 dB ; 30–100 MHz: 120 dB; 100–150 MHz: 120–110 dB Audio input/output terminals (excluding speakers/headphones): 0.15–1.6 MHz:80–90 dB ; 1.6–20 MHz: 90–120 dB; 20–100 MHz: 120 dB; 100–150 MHz: 120–100 dB Antenna terminal: 26–30 MHz: 126 dB |
|
|
ESD Electrostatic immunity |
EN 61000-4-2:2009 |
Contact discharge: ±4 kV; air discharge: ±8 kV |
|
|
EFT Electrical transient pulse group immunity |
EN 61000-4-4:2012 |
1 kV ( Peak), 5/50 ns Tr/Th, 5 kHz repetition rate, Class B |
|
|
Immunity to environmental electromagnetic fields |
EN 55020 |
For limit values, please refer to Appendices 2–6. |
Appendix 1:A Harmonic standards for product categories
|
Test specification for equipment with audio functions |
|
|
Frequency(MHz) |
Level dB(μV) |
|
0.15~150 |
125 |
Appendix 2 : Immunity to environmental electromagnetic fields - Test Specification for Audio-Enabled Devices
|
Test specification for equipment with audio functions |
|
|
Frequency(MHz) |
Level dB(μV) |
|
0.15~2.5 |
125 |
|
2.5~4.25 |
120 |
|
4.25~6.25 |
115 |
|
6.25~10 |
120 |
|
10~150 |
125 |
Appendix 3 : Immunity to environmental electromagnetic fields - Test Specification for Videotape Equipment in Playback Mode
|
Test specification for equipment with audio functions |
|
|
Frequency (MHz) |
Level dB(μV) |
|
0.15~45 |
115 |
|
45~150 |
125 |
Appendix 4 : Immunity to environmental electromagnetic fields - Test Specification for Portable Video Devices
Appendix 5 : Immunity limit for the FM reception function of the audio receiver to environmental electromagnetic fields
Appendix 6 : Immunity limits of television receivers operating in reception mode to environmental electromagnetic fields
Harmonic and Flicker Testing process
Conducted Interference Test Procedure
In addition to the United States, other countries and regions also have corresponding regulations for electronic products. EMC Requirements, SATISFY Can provide services in various countries around the world. EMC Testing Services:
|
Country / Region |
Certification |
Test Requirements |
|
International CISPR/IEC |
CISPR 32 ， IEC 61000-3-2 ， IEC 61000-3-3 ， CISPR 24 |
|
|
Europe CE |
 |
EN 55032 ， EN 61000-3-2 ， EN 61000-3-3 ， EN 55024 |
|
United States FCC |
 |
CFR title 47 part 15 |
|
Canada IC |
 |
ICES-003 |
|
Australia / New Zealand RCM/C-Tick |
 |
AS/NZS CISPR 32 ， AS/NZS 61000.3.2 ， AS/NZS 61000.3.3 ， AS/NZS CISPR 24 |
|
China CCC |
 |
GB 9254-2008 |
|
South Korea KCC/MSIP |
 |
KN 32 ， KN 35 |
|
Japan PSE/VCCI |
 |
VCCI-CISPR 32 ：2016， VCCI -V3/2016.11 |
Appendix: AV Audio and video products EMC Standard / Test Method Summary
EN/IEC 55032: Electromagnetic compatibility of multimedia equipment - Emission requirements
EN/IEC 55024: Information technology equipment - Immunity characteristics - Limits and methods of measurement
EN/IEC 55035: Electromagnetic compatibility of multimedia equipment - Immunity requirements
EN/IEC 61000-3-2: Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)
EN/IEC 61000-3-3: Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection
EN/IEC 61000-4-2: Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
EN/IEC 61000-4-3: Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
EN/IEC 61000-4-4: Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test
EN/IEC 61000-4-5: Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test
EN/IEC 61000-4-6: Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields
EN/IEC 61000-4-8: Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
EN/IEC 61000-4-11: Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current up to 16 A per phase
CISPR 32: Electromagnetic compatibility of multimedia equipment - Emission requirements
CISPR 24: Information technology equipment - Immunity characteristics - Limits and methods of measurement
CFR Title 47 Part 15: Radio Frequency Devices
ICES-003: Information Technology Equipment (including Digital Apparatus)
AS/NZS CISPR 32: Electromagnetic compatibility of multimedia equipment - Emission requirements
AS/NZS CISPR 24: Information technology equipment - Immunity characteristics - Limits and methods of measurement
AS/NZS 61000.3.2: Electromagnetic compatibility (EMC) - Part 3.2: Limits - Limits for harmonic current emissions (equipment input current less than or equal to 16 A per phase)
AS/NZS 61000.3.3: Electromagnetic compatibility (EMC) - Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection
GB 9254-2008: Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement
KN 32: Electromagnetic compatibility of multimedia equipment - Emission requirements
KN 35: Electromagnetic compatibility of multimedia equipment - Immunity requirements
VCCI-CISPR 32:2016: Electromagnetic compatibility of multimedia equipment - Emission requirements
VCCI-V3/2016.11: Electromagnetic compatibility of multimedia equip ment - Immunity requirements
AV Audio and Video Products EMC Standard Update
The European Union’s AV audio and video products’ EMI standard EN 55013 and IT equipment EMI standard EN 55022 have been integrated into EN 55032.
The European Union’s AV audio and video products’ EMS standard EN 55020 and IT equipment EMS standard EN 55024 will be integrated into EN 55035.
SATISFY provides comprehensive and high-quality EMC certification services for AV audio and video products to help your products successfully enter markets worldwide. Please contact SATISFY customer service for more information.
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