EMC Testing And Certification

All About EMC Testing & Certification – Electrical Product Testing

Have you built an electronic device that meets market demands? Are you confident the device radiates very little energy and doesn’t interfere with other electronic devices? If you’re not sure of the answers to these questions, please read below for more.

The only way of knowing that your electronic device doesn’t interfere with other electronic devices is to conduct an EMC test on your electronic devices.

Many manufacturers are confident that their electronic devices are not susceptible to outside electromagnetic interferences however, most of these products fail when they reach the final EMC testing stage.

This is a nightmare for most product designers and manufacturers. That’s why pre-compliance EMC testing is encouraged amongst the manufacturers and product designers.

This article provides information on EMC Testing & Certification for electronic products.

  • Early error detection can speed up the electronic project lifecycle
  • Reducing the risk of failing certification
  • EMC testing reduces over-engineering
  • Finding the best EMC testing lab in Australia

Early Error Detection Can Speed Up The Electronic Project Lifecycle

When product deficiencies are identified early in the development process, it is easier to rectify their shortcomings. Trying to fix the shortcomings after EMC testing is expensive and time-consuming.

Pre-compliance EMC testing will let the manufacturer or designer of the electrical product focus on the areas that they have recognised as the potential reasons for concern and find the right solution to them.

The risk of design failure is relative to how long the manufacturer delays EMC testing. If you leave EMC testing to the end of the project, you will be completely reliant on the design team’s skills and competence.

This isn’t the best thing to do if you want the best final product. EMC testing and certification can help save a lot of time and money in the product development process.

Reducing The Risk Of Failing Certification

Early EMC testing can reduce the risk of failing certification. You can determine the non-compliance issues before submitting the final product for formal testing with pre-compliance EMC testing.

Pre-compliance testing will make EMC practice a less stressful experience to the manufacturer and product designers.

That’s why you should consider pre-compliance EMC testing and certification for all your electrical products.

EMC Testing Reduces Over-Engineering

Early EMC testing and certification will help reduce over-engineering and save money for the manufacturers and designers. Before the electrical product is tested, it is not known where the problems may occur.

The production team might add more countermeasures where it’s not required. More money would be unnecessarily wasted on product development areas due to overengineering.

That’s why you should conduct a pre-compliance EMC testing for all your electrical products.

Finding The Best EMC Testing Lab In Australia

Choosing the best 3rd party EMC test lab in Australia isn’t an easy task. There are many factors to look into when choosing a reputable test lab in Australia.

Your research plays an important part in this regard. It’s worth keeping the following criteria in mind when choosing the best EMC test lab in Australia:

  • Can the chosen lab do all the testing you need?
  • Will you need to find another lab to do part of the testing?
  • How close is the lab to your manufacturing facility?
  • Is the EMC testing lab accredited?
  • Do they offer free design support if your product fails the test?
  • What is the lead time of the lab – the time between booking the test and getting a test slot?

If you would like these questions answered, or would like to know more about the EMC standards and product testing or need EMC testing done, then look no further than Compliance Engineering.

We are the definitive source for all of your Electromagnetic Compatibility (EMC) requirements. Please call us today on + 61 3 9763 3079 or contact us here.

What Is EMC Certification Practice Test

What Is An EMC Certification Practice Test?

Are you new to EMC certification and testing? Do you want to know the benefits of EMC testing? If so, please continue to read this article as we explore EMC testing further.

Electromagnetic Compatibility Testing or EMC testing is a long-term investment by manufacturers. This type of testing will show whether or not your product is compliant with the proper EMC directives and regulations.

If you manufacture any type of electronic device, it’s important that you understand that such devices have the potential of being vulnerable to various electromagnetic fields.

With so many devices being used by today’s population, the electromagnetic field of each electronic device can impede upon another. That’s why electronic or electrical products and installations need compliance.

The EMC certification practice test is important due to this reason. Let’s take a look at the following in more detail below:

  • The benefits of an EMC certification practice test
  • Impacts of EMC testing
  • The importance of early analysis effects EMC testing
  • Avoiding potential hazards with EMC testing

The Benefits Of An EMC Certification Practice Test

Manufacturers can have confidence in their electronic products after an EMC test. The reliability of electronic products will increase as a result of the test.

This will help reduce warranty issues, servicing costs, and improve brand royalty over time. EMC testing will highlight any issues with your electronic product.

EMC testing allows you to remedy any issues before the production is completed and is highly recommended for all electronic devices manufactured in Australia.

EMC testing needs to be conducted at a specialist laboratory if you plan to distribute electronic products to the European Union and the United States.

The Federal Communication Commission (FCC) in the USA and Conformite Europeene (CE marking) in the European Union need such assurances when importing electronic devices to their countries.

That’s why you need to rely on a specialist EMC testing laboratory in Australia when shipping electronic devices to the United States and the European Union.

Impacts Of EMC Testing

EMC testing is expensive and failed EMC testing may incur great financial losses to the manufacturer. If an electronic product fails an EMC testing, the budget needs to be extended for re-testing the product.

This can increase the production costs of the electronic device. That’s why many production facilities prefer to introduce testing at an earlier stage in the development cycle.

The financial impacts of EMC testing can be minimised when the manufacturer decides to integrate pre-compliance testing into the production process from the very start.

The Importance Of Early Analysis Effects EMC Testing

An early analysis of the product’s electronic content can help prevent many issues and financial losses in the EMC testing process. There are many advantages to early detection of faults and pre-compliance of EMC testing.

The earlier the defects of the electronic device are detected in the development process, the easier it is to rectify the faults. Any potential causes that are identified early can be easily solved without wasting money.

The risk of failure of the electronic device is greatly reduced due to this reason.

Avoiding Potential Hazards With EMC Testing

Over-engineering could be prevented by early EMC certification testing. It’s proven to be very cost-effective in the long run. This ensures the product can confidently be compliance-tested.

It’s not known where the problems will occur before the testing process. The manufacturer can use additional countermeasures to guarantee the quality of the final product with EMC testing.

If you would like to know more about the EMC standards and product testing or need EMC testing done, then look no further than Compliance Engineering.

We are the definitive source for all of your Electromagnetic Compatibility (EMC) requirements. Please call us today on + 61 3 9763 3079 or contact us here.

Why EMC Testing Requirement

Why EMC Testing Is A Requirement

What is EMC testing and why is it required? If you are looking to launch any sort of electronic device to market, you need to understand EMC testing. Please read below as we take a deeper look into this topic.

Worldwide regulatory bodies have placed limits on the levels of electromagnetic emissions that can be generated by electronic and electrical devices.

Electromagnetic Compatibility (EMC) testing is used to ensure that electronic or electrical products do not emit large amounts of electromagnetic interference and also to ensure that devices continue to function as intended when subjected to several electromagnetic phenomena.

EMC testing and certification can be a huge burden to small as well as large manufacturers and sometimes its effectiveness can be questionable.

However, EMC rules emerged as a result of real problems experienced in the field that prompted governments and private infrastructure to accommodate and enforce these rules with electromagnetic immunity testing being mandated in some areas and for some product types.

If you are in any way involved in the design, manufacture or import of products that contain electronics, you will most definitely need to determine whether emissions and immunity tests apply to your products and exactly which standards apply.

This testing must be performed by a recognised EMC testing body to ensure that full compliance is met for testing and certification purposes.

Why EMC Testing is Necessary

Electronic devices have the potential of being vulnerable to electromagnetic fields.

With excessive numbers of these devices in the hands of the global population, the capacity for various devices to interfere with each other becomes apparent.

This has prompted regulatory authorities to state that electronic and electrical products need compliance and that they cannot be recognised as complete until all aspects related to EMC testing have been considered.

This does not just apply to commonly used products such as electronic devices, televisions, computers, and household appliance among others.

It also incorporates sensitive and high-tech products particularly sensitive to EMC influences such as aircraft, vehicles, ships, and large industrial installations.

In some countries like Canada and the United States, only emission testing is currently required (unless products fall under the scope of industry-specific standards that require immunity testing as well).

However, in Europe, both emissions and immunity testing are mandated. Countries such as Australian and New Zealand have followed the European model over the past few years.

There has been a big push from internal governments, test labs, and international standards signifying an increase in requirements for immunity testing.

Why EMC Testing is Important for Everyone

• Protection of the Electromagnetic Spectrum

There is only a certain amount of electromagnetic spectrum available for use by things like x-ray machines, radio transmissions, and microwave transmissions as well as a number of other products.

Even without transmitters, electronic devices continually emit electromagnetic radiation simply as a byproduct of switching voltages and currents inherent in electronic circuitry.

If there are no limits to the amount of unintended electronic radiation emitted by these products, our electromagnetic spectrum can be adversely affected, compromising frequency bands reserved for things like radio transmissions.

The continued explosion of wireless and non-wireless electronic products on the market has resulted in the electromagnetic spectrum being more crowded than ever.

In order to ensure that electronic devices continue to function properly in the future, the protection of the electromagnetic spectrum is essential.

• Safety Concerns

EMC performance for many industries and products can mean the difference between life and death which is why many industrial, military, medical, automotive, and aerospace products have safety-critical applications.

• Product Quality and Performance

The performance and function of electronic products can be adversely affected by internal and externally generated EMC phenomena such as in internal power supply that is too noisy.

External EMC phenomena can affect devices in a number of ways including measurement accuracy, data corruption, RF performance, and IC frying.

EMC testing can not only help you meet regulatory requirements and reduce the risk of costly non-compliance but can also help improve product performance.

This, in turn, will help to strengthen your competitive position in the industry as it is regarded as a long-term investment by many manufacturers.

If you would like to know more about the EMC standards and product testing or need EMC testing done, then look no further than Compliance Engineering.

We are the definitive source for all of your Electromagnetic Compatibility (EMC) requirements. Please call us today on + 61 3 9763 3079 or contact us here.

 

EMC & EMI Emissions Measured

How Are EMI and EMC Emissions Measured?

Do you have an electronic device that is being manufactured? Did you know your product needs to be tested for electromagnetic compatibility? This article will explain what happens with this process.

All electronic devices and electric equipment make use of electromagnetic waves produced by electrically charged particles in motion. This electromagnetic radiation travels through the air, empty space, and other substances.

The full range of wavelengths and particles called photons forms the ‘electromagnetic spectrum’.

Regulatory compliances require that electronics undergo electromagnetic testing, a critical step when bringing a new product to the market.

What is EMC and EMI Testing?

Generally speaking, electromagnetic testing should only be performed by a recognised EMC testing body. The testing is grouped into two categories, emissions testing, and immunity testing.

– Emissions Testing

The purpose of emissions testing is to ensure that emissions from the device being tested are below the limits relevant for that type of device.

Basically it measures the amount of electromagnetic ‘noise’ generated during normal operation of the device.

The tests can provide reasonable assurance that the device will not emit harmful interference while operating within its normal operating environment.

– Immunity Testing

The purpose of immunity testing is to ensure that the device will operate as intended within its expected operating environment and how it reacts when exposed to disturbances such as electromagnetic noise from other devices or equipment.

Regulatory compliance requires both types of testing. The most common applications for electromagnetic testing are:

– Medical devices where devices must work together in close proximity without performance being compromised by interference or electromagnetic noise.

– Military or Aerospace devices to meet standards for avionics equipment and other goods.

– Consumer products such as cellular phones, satellite TV dishes, laptops, and microwave ovens to avoid harmful interference in real-world conditions.

What is the Difference Between EMC and EMI Testing?

Both types of testing are vital for electronic product development and companies across the world are required to comply with EMC/EMI limits finalised by standard bodies before launching products to the market for consumer use.

EMC (Electromagnetic Compatibility) and EMI (Electromagnetic Interference) testing are essential to verify the electromagnetic levels mentioned for any manufactured device.

Designers need to consider the specific military or industrial standards required for products under development.

How to Measure EMC and EMI Emissions

An electromagnetic field consists of two components:

– Electric Field or E-Field measured in V/M (volts per metre)
– Magnetic Field or H-field measured in A/m (amps per metre)

These two fields move at right angles to each other.

Emissions are subdivided into Radiated and Conducted Emissions

Radiated Emissions Testing

This test measures the electromagnetic field strength of emissions unintentionally generated by a product, how large they are, and if they comply with emissions limits set for the particular product.

Radiated emissions measurements are done by using a spectrum analyser and/or EMI receiver as well as a suitable measuring antenna.

The frequency band of interest will be scanned in a test lab to detect emissions that are close to the limits. A process called ‘maximisation’ is used to focus on these emissions and quantify the amplitude of their field strength.

Two primary test sites used for this purpose are:

– Open Area Test Sites (OATS)
– Semi Anechoic Chambers

Conducted Emissions Testing

As a device creates electromagnetic energy, a certain amount is conducted into the power supply cord. Test labs measure these emissions to verify that they comply with the specified limits.

A typical conducted emissions test involves one or more LISNs placed between the power source and an EUT (Equipment Under Test) that filter and isolate unwanted RF signals.

LISNs help to minimise external noise, allowing the lab to only measure noise from the EUT device.

Passing EMC/EMI testing will depend on several factors such as a good understanding of the process involved, the skill of the designers, and proper preparation. The estimated failure rate for first-time passes is 50%.

An EMC design review before designing a product or sending a device to an EMC test lab can help check your product against industry-standard best practices and issues that could increase the chances of first-time pass failure.

If you would like to know more about the EMC standards and product testing or need EMC testing done, then look no further than Compliance Engineering.

We are the definitive source for all of your Electromagnetic Compatibility (EMC) requirements. Please call us today on + 61 3 9763 3079 or contact us here.