Electromagnetic Compatibility (EMC)
What is Electromagnetic Compatibility (EMC)?
Electromagnetic compatibility (EMC) is the branch of electrical engineering concerned with the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage in operational equipment.
EMC pursues three main classes of issue. Emission is the generation of electromagnetic energy, whether deliberate or accidental, by some source and its release into the environment. EMC studies the unwanted emissions and the countermeasures which may be taken to reduce unwanted emissions. The second class, susceptibility, is the tendency of electrical equipment, referred to as the victim, to malfunction or break down in the presence of unwanted emissions, which are known as Radio frequency interference (RFI).
Radiated EMI is most often measured in the frequency range from 30 MHz to 10 GHz (according to the FCC). Conducted EMI is most often measured in the frequency range of several kHz to 30 MHz (according to the FCC).
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Winmate has an in-house laboratory to guarantee the compliance of our products with the International Electrotechnical Commission (IEC) regulations.
Sam Liao, CTO, Winmate Inc.
Picture 1. Path of radiated and conducted energy
In-House Pre-Compliance EMC Testing
EMC testing is essential to determine a product's level of compliance with product safety directives.
Compliance means that your product is safe and will function as expected. The essential requirements are that any disturbance generated does not exceed the level above which other equipment cannot tolerate and has a level of immunity to disturbances expected within its operating environment. If the system uses products from different manufacturers, there is always a risk of a non-compliant product being placed. The first signs of non-compliance are malfunctioning systems, which lead to downtime, increasing costs, and potentially hazardous situations.
In-house EMC testing laboratory
Our EMC test capabilities
Winmate has an in-house EMC test laboratory to perform highly accurate EMC tests relating to both conducted and radiated emissions. The capability spectrum ranges across industrial requirements to serving many medical and Defence applications too.
Anechoic RF chamber used for EMC testing (radiated emissions and immunity).
What reports / consultations we provide
We can provide simple print-outs of your emissions scans that show the basic test information. We can also offer a highly detailed test report, complete with photos, results, and conclusions that can further evidence of conformance to support your declaration to the necessary directives and standards.
EMC Test Setup
Picture 1. EMC Test Setup
Table 1. Regulatory standards of EMI
| Entity | Standard |
|---|---|
| USA | FCC Part 15, Subpart J |
| Canada | CSA |
| European Union |
EU (European Union) 89/336/EEC EN specifications: Electronic Equipment Specifications:
|
| Defence | MIL-STD-461/462 |
| Aviation | DO-160 |
| Healthcare | IEC 60601-1-2 |
EMI testing generally has a low band range of 30 MHz to 200 MHz and a high band range of 200 MHz to 1 GHz. Conducted RFI is often found in the low-frequency range of several kHz to 30 MHz. Radiated RFI is most often found in the frequency range from 10 GHz to 30 MHz. RFI testing uses a frequency range of 30 MHz to 3,000 MHz. If the equipment being tested has the potential for radiation above 3,000 MHz, the frequency range of the RFI tester can be extended for particular measurements.
Picture 2. Measuring EMI, RFI frequency
Electromagnetic compatibility solutions
In order to avoid unnecessary costs in bringing products into compliance with governmental regulations, many solutions are proposed to improve the interference of systems. The choice varies by application and product specifications.
EMC (Electromagnetic Compatibility) is an essential factor for any electronic device to ensure its proper functioning and compliance with regulatory requirements. Here are some of the benefits of having EMC:
Reliable operation: Devices that meet EMC standards are less likely to malfunction due to electromagnetic interference. This is because EMC testing ensures that devices are designed to operate in the presence of other electronic devices and electromagnetic radiation.
Compliance with regulations: Governments and regulatory bodies around the world have established EMC standards to ensure that electronic devices do not cause interference with other devices. Compliance with these standards is mandatory in many countries, and failure to meet them can result in legal consequences.
Improved product quality: EMC testing helps manufacturers identify and correct potential problems with their products before they are released to the market. This leads to improved product quality and reduces the risk of costly product recalls and repairs.
Increased customer confidence: Customers are more likely to purchase electronic devices that have undergone EMC testing and meet regulatory requirements. This is because they have confidence that the device will work properly and not cause interference with other devices.
Having EMC is essential for any electronic device, including Winmate's rugged tablets and Panel PCs, to ensure their proper functioning and compliance with regulatory requirements. EMC provides several benefits, including reliable operation, compliance with regulations, improved product quality, and increased customer confidence. Winmate's rugged tablets and panel PCs are designed to meet the most demanding requirements of today's industries. To ensure that these devices can be used in a range of applications, Winmate has employed advanced electromagnetic compatibility (EMC) testing and verification processes.
EMC refers to the ability of electronic devices to operate without interfering with other devices or being affected by interference from other devices. Winmate's rugged tablets and panel PCs have undergone rigorous EMC testing to ensure that they meet industry standards and comply with regulatory requirements.
One of the key benefits of Winmate's rugged tablets and panel PCs is their ability to withstand electromagnetic interference (EMI). EMI can be caused by a range of factors, including other electronic devices, electrical systems, and radio frequency (RF) signals. To minimize the impact of EMI, Winmate's rugged tablets and panel PCs are designed with advanced shielding and filtering technologies. These features ensure that the devices can operate reliably and without interference in a variety of environments.
In addition to EMI, Winmate's rugged tablets and panel PCs have also been tested for electromagnetic susceptibility (EMS). EMS refers to a device's ability to resist being affected by electromagnetic fields from external sources. Winmate's rugged tablets and panel PCs are designed to be highly resistant to EMS, allowing them to operate reliably in environments with high levels of electromagnetic activity.
Winmate's rugged tablets and panel PCs are also designed to meet other industry standards, such as MIL-STD-810G and IP65, which ensure that the devices can withstand shock, vibration, and water ingress without compromising their performance. This makes them an excellent choice for businesses and organizations that require rugged, durable, and high-performance computing solutions. Winmate's rugged tablets and panel PCs have undergone rigorous electromagnetic compatibility testing and verification processes to ensure that they meet industry standards and regulatory requirements. With their advanced shielding and filtering technologies, these devices are able to operate reliably and without interference in a variety of environments.