What is a EMC Test?

“Testing related to electromagnetic waves (noise) from electrical and electronic products.” In addition, the following two tests are composition.

• Emission (EMI) Test

  Turns evaluation whether the emitted electromagnetic waves fall within the limits determined by test standard.

• Immunity (EMS) Test

  Turns evaluation the likelihood of unexpected operation due to electromagnetic waves.

Why EMC Testing is Required?

Electrical and electronic products generate electromagnetic waves when they operate.
This interference may cause malfunction of other electronic equipment, or in turn may cause function interference or damage due to electromagnetic waves generated by other equipment.
When commercializing electric and electronic products, it is necessary to conduct EMC tests to confirm that they are not adversely affected by electromagnetic waves and that they are resistant to electromagnetic waves.

Flow of EMC Test

• STEP

  01
  

  Inquiries

• STEP

  02
  

  Interview

• STEP

  03
  

  Estimation

• STEP

  04
  

  Schedule
  adjustment

• STEP

  05

  

  Measuring

EMC Test of Automotive Equipment

It is no overstatement to say that recent automobiles are lumps of electrical parts.

These components do not simply Control each function to drive a car, they also provide supplemental to the driver’s operation, improve driving security, or provide informational input to the driver.
These include radio communications, sensor detection, image-recognition, and in-vehicle networking Control.In order to achieve a function without malfunction on earth, it must be demonstrated that the tester can withstand various environmental conditions.

One of these is “Electromagnetic resistance”.There are various types of electromagnetic waves on the earth, even if it is called “electromagnetic resistance”.
By clearing all tests simulating these environments, the car will prove its ability to drive safer.

EMC test is to confirm this electromagnetic proof strength.Testing of EMC is broadly divided into two.
“Emission Test (EMI)” and “Immunity Test (EMS)”.

Emission is a object emission test that tests the magnitude of external noises.
The immunity tester is designed to be object and tested for external immunity.

EMC Test Specification List

• Automotive Equipment

  Test name		compatible test standard
  Emission Test	Radiation Emission	CISPR25/ Vehicle Manufacturers test standard
  	Conducted Emissions (electric current)
  	Conducted Emissions (voltage)
  	Magnetic Field Emission	MIL STD461 RE101/ Vehicle Manufacturers test standard
  	Transient Emission	ISO7637-2/ Vehicle Manufacturers test standard
  Immunity Test	ALSE	ISO11452-2/ Vehicle Manufacturers test standard
  	TEM Cell	ISO11452-3/ Vehicle Manufacturers test standard
  	BCI	ISO11452-4/ Vehicle Manufacturers test standard
  	Stripline	ISO11452-5/ Vehicle Manufacturers test standard
  	Magnetic Field Immunity	ISO11452-8/ Vehicle Manufacturers test standard
  	Antenna-proximity	ISO11452-9/ Vehicle Manufacturers test standard
  	ESD	ISO10605/ Vehicle Manufacturers test standard
  	Square Wave Noise Testing	Vehicle Manufacturer test standard
  	Transient Immunity Test	ISO7637/ Vehicle Manufacturers test standard
  	Voltage Variation Test	ISO16750/ Vehicle Manufacturers test standard

• Generic EMC

  Test name		Compatible test standard
  Emission test	Radiation emission	CISPR11, CISPR32, FCC Part15B, IEC/EN61000-6-1, 3 ETSI EN 301 489-1, etc
  	Conducted emissions (power supply)
  	Conducted emission (signal)
  	Harmonic	IEC/EN61000-3-2※In preparation
  	Flicker	IEC/EN61000-3-3※In preparation
  Immunity test	ESD	IEC/EN61000-4-2
  	Radiated immunity	IEC/EN61000-4-3
  	Fast transient burst	IEC/EN61000-4-4
  	Surging	IEC/EN61000-4-5
  	Power supply frequency magnetic field	IEC/EN61000-4-8
  	Power failure/DIP	IEC/EN61000-4-11

  Test standard of EN50121-3-2 (railroad equipment) and IEC/EN60945 (ship equipment) is also supported as a product test standard.

Overseas Laws Andregulations for Electronic Equipment

When exporting electronic equipment and radio equipment from Japan to foreign countries, the requirements for EMC testing, radio testing, and safety testing have been legally regulated by the laws and regulations of the country where they are exported, and compliance with test standard and regulations of object is Must.
Depending on the export destination, EMC, safety, and radio certification are required, or only safety certification is required, and their response varies depending on the country and region.

IMV’s EMC test facility “e-TCJ” strongly supports these certifications and acquisitions.Reduce the burden on corporate personnel involved in communicating with organizations in various countries.

Country-Specific Electronics Regulations

e-TCJ is capable of all regulatory certification and acquisitions.

High-Quality EMC Testing of IMV

EMC testing requires a sophisticated technical force as it measurment invisible electromagnetic waves.

e-TCJ manages and tests EMC testing of Must worldwide in e-mobility by more than 20 years of carrier experience.
In addition,Mazda Corporation officially approved it as a “MES67602D accredited testing laboratory.” (Go to the Japanese website)

Since the tester is capable of testing devices other than in-vehicle devices through its own networking, be sure to inquiry the tester without fail for EMC testing, certification, or certification.

Terminology of EMC Test

Radiative emission	Externally radiated electromagnetic fields are outside test standard limits evaluation
Conducted Emissions	Evaluation that the conducted noises that overlap power supply harness of the DUT do not exceed test standard limit.
ALSE (Antenna-I​rradiated)	Conduct field-coupled radiation tests to evaluation for unexpected operation and immunity
TEM cell	Evaluation of unexpected operation level and interference rejection capability by conducting radiation tests with minimal effect of field coupling
Stripline	Transmission path for transmitting electromagnetic waves having a structure in which a linear conductive foil is formed
Antenna proximity	Radio waves emitted from the antenna of a radio device that is supposed to be used in a vehicle are irradiated in the proximity
BCI(bundle electric current injected)	Evaluation immunity of harnesses connected to the test piece when strong electromagnetic field noises are induced
Magnetic field immunity	Evaluation the resistance of the study piece to exposure to strong magnetic fields.
ESD (Electrostatic Breakdown Test)	Evaluation the breakdown resistance of semiconductors and electronic parts subjected to electrostatic stress.