Why is EMC Testing Crucial?
EMC actually stands for Electromagnetic Compatibility Testing and every electronic product has to go through the testing if the product is in search of wide consumer acceptance. EMC in layman’s terms is the test that determines if an electrical or electronic product works fine in natural environments without producing electromagnetic waves that may conflict with other products.
If you have ever watched the videos where old televisions or radios have been playing, you might have noticed that the radio transmission was riddled with different types of noises and disturbances. Similarly, television’s transmission had video and audio artifacts. At that time, scientists and engineers believed that this is how it is supposed to be. But as science moved forward, they started to realize that such disturbances occur because electromagnetic emissions of different products collide with each other and if they are able to make them compatible, these noises and other artifacts will go away.
Which Products Need EMC?
There is no electrical or electronic product that can land in markets without going through all tests of Electromagnetic Compatibility. All consumer grade products such televisions, washing machines, radios, computers, smartphones, refrigerators etc. have to be EMC tested. However, the EMC testing isn’t only necessary for small products but also crucial for big stuff like vehicles, airplanes, ships, industrial equipments and large machineries.
EMC is Crucial
Getting a product to pass EMC testing is not an easy task. We are in 2015 and most of the circuit and electronics designers know about electromagnetic compatibility but still more than 50% of the products fail to go through EMC testing in first round. This happens for various reasons:
- Unpredictable behavior or interactions of some of the electronic components on the circuit
- Circuit designer is unaware of EMC regulations or fails to apply all regulations in appropriate manner
- Designers applies wrong EMC regulations or makes a mistake despite his correct knowledge
- Inclusion of modules and assemblies that have been proven to be non-compliant for Electromagnetic Compatibility
- Not focusing on Electromagnetic Compatibility of the product
All these reasons contribute towards inefficient design that increases the cost of research and development and product takes more time to reach the market and that’s why focusing on EMC testing is very crucial. If a company or an inventor is not concerned about electromagnetic compatibility from the very beginning, there is a very big chance that they are going to go through various cycles later on to ensure electromagnetic compatibility which will cost more time, money and not to mention frustration.
How to Get EMC Right
The designer or inventor of the chip or circuitry can increase his chances of success by employing the following tactics:
- Ensuring that he is completely aware of the EMC regulations and proper applications
- Consideration of automatic and manual Electromagnetic Compatibility design rules
- Check and recheck for any non-compliant sub-assemblies or modules that might have been used in the product
- Make place for alterations related to EMC compliance
- Ensure that regulatory specifications are latest and valid
Employing these methods will heighten the chances of the product getting through the very first Electromagnetic Compatibility testing.