26Apr
19Apr
RF/EMI Shielded Curtains-Privacy and Separation!
RF/EMI Shielded Curtains-Privacy and Separation! In our lives, we use curtains for privacy, separation, and protection. RFI/EMI Shielded Curtains are used in the same way. RF Shielded curtains are made of conductive metalized textiles. These curtains block the passage of RF and EMI waves. One of the major uses of these curtains is in hospital telemetry areas. They effectively isolate the beds in a "shielded room". This assures that the proper information is transferred...
13Apr
RF/EMI Shielded Garments-Wearable Protection!
RF/EMI Shielded Garments-Wearable Protection! Our environment is full of Electromagnetic Radiation (EMR). Many of the sources of EMR "natural" and have always been present. The sun, atmospheric auroras, and the earth itself have electromagnetic fields. We are constantly exposed to these low-level electromagnetic fields. RF/EMI is a problem in electronic devices, decreasing performance. Electronic devices are shielded from RF/EMI using shielding materials. The shielding materials in electronic devices are often conductive metalized textiles. The metalized textiles block RF/EMI...
07Apr
Electromagnetic Compatibility-when devices work smoothly Together!
Electromagnetic Compatibility-when devices work smoothly Together! Devices are like people, they work best when they're compatible. Electronic devices work best when they don't interfere with each other. Electronic devices can be interfered with in several ways. They can be "distracted" by RF interference emitted by nearby devices. This distraction is similar to a co-worker who is always talking. The background "noise" keeps work quality below its potential best. Devices that can be "distracted" are called "susceptible". The answer to susceptibility...
05Apr
RF/EMI Shielding-the Key to EMC!
RF/EMI Shielding-the Key to EMC! Electromagnetic Compatibility Standards must be met prior to marketing devices. The device must perform well in a shared electromagnetic environment. It must not disrupt the performance of other nearby devices. It must not be disrupted by its environmental coworkers. The "potential disruption" is caused by RF/EMI outside of acceptable standards. In the US, the FCC determines these standards. In Canada, Industry Canada determines the standards. Europe requires the "CE" mark that represents...
30Mar
What is Conductive Mesh-how is it used?
What is Conductive Mesh-how is it used? Conductive Mesh is a knitted metal plated fabric with pores. The fabric is Nylon 6, Nylon 6.6 or polyester. The pore size varies, pores can be big or small. If they are small, the mesh can be used for filtered ventilation. Conductive mesh vents are often used in the ventilation systems of our RF Shielded Testing Enclosures. Conductive meshes are useful in face masks to filter the air of particulate...
17Feb
Shielding lowers Interference-Devices work Better!
Shielding lowers Interference-Devices work Better. We all know what interference is like in an office situation. While concentrating on an important job, someone disrupts your concentration. The interference comes from a coworker who is working with you. Frustration sets in, you can't get back "into the zone". You know you aren't performing your best work. The same thing can happen to devices in a shared electrical environment. All devices are trying to work but can't function well. In the workplace...
10Feb
EMI/RFI spell Trouble, VTT offers Solutions!
EMI/RFI spell Trouble, VTT offers Solutions! An electronic device can't be marketed until it is compliant with applicable EMC Standards. Each device has to pass EMC Final Compliance Testing before it can be marketed. Testing is rigorous, device development is crucial in preparation for it. Pre-Compliance testing, starting upon product development is the best way to prepare for the Final Compliance Testing. Pre-Compliance testing is best done "early and often" in your own facility. This development method saves time and...
02Feb
Have EMC Testing Questions, VTT can Answer them!
Have EMC Testing Questions, VTT can Answer them! There are many types of EMC Testing Standards, issued mainly by these groups: FCC (Federal Communications Commission), MIL Standards, EN (European Norm), SAE (Society of Automotive Engineers), ISO (International Organization for Standardization), IEC (International Electrotechnical Commission), and CISPR (Comite International Special Des Perturbations Radio). All of these groups have tests, test standards, and test methods. These tests deal with emission of and susceptibility to RF. Many products are exported to foreign countries and become subject...
15Dec
