EMI/RFI Suppression
Electromagnetic interference (EMI) refers to an electromagnetic disturbance that disrupts, obstructs, limits, or otherwise degrades the effective performance of electrical equipment. RFI (Radio frequency interference) refers to high frequency electromagnetic waves that emanate from electronic devices. Electromagnetic fields are produced whenever electricity passes through a medium (such as a wire, circuit, or air). Common sources include power lines, computers, electrical instruments, household appliances, and cell phones as well as geomagnetic or atmospheric conditions such as a lightning storm.
The most effective way to control the level of EMI/RFI immunity or radiation an instrument exhibits is with shielding. Shielding, through the use of properly grounded conductive materials, reduces electromagnetic fields by reflecting and/or absorbing the energy. EMI suppression on displays (computers or instruments) is generally achieved by coating glass panels with low resistance transparent conductive oxides, applying mesh screens, or both. JDSU's industry-leading 0.25 ohm/square sheet resistance provides the highest suppression available from an optical coating. A bus bar - a silver coating around the perimeter of the display - provides the required grounding. Typical applications include air traffic control systems, medical instrumentation, computer systems, avionics instrumentation, industrial monitoring systems, measurement instrumentation, and secure communications.
Coating, High Efficiency Anti-Reflection (HEA®), PrintFree™
Coating, Conductive, Low Ohm Transparent
