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IEC 62496-2-4:2013: Optical Circuit Boards – Basic Test & Measurement Procedures – Part 2-4: Optical Transmission Test for Optical Circuit Boards without Input/Output Fibers

 

From the International Electrotechnical Commission webstore: "IEC 62496-2-4:2013 specifies the test method to decide whether to pass or fail an optical circuit board using direct illumination by a light. The input ports are directly illuminated and the optical intensity from the output ports of the optical circuit board is monitored using an area image sensor. Excess optical … [Read more...]

FCC Needs to Consider Interference in Incentive Auction Plans, Says NAB

 

The Federal Communication Commission’s failure to conduct adequate investigations into the potential of co- and adjacent-channel interference could seriously hinder the agency’s efforts to free up spectrum for the wireless industry, the National Association of Broadcasters said in its reply comments released last week. Under the FCC’s proposed plan for the 600MHz incentive … [Read more...]

RF Absorptive Switch for Test Equipment and ATE Applications

 

Peregrine Semiconductor’s SP4T PE42540 RF switch is now available from electronic component distributor Digi-Key. Comprised of four symmetric RF ports and featuring high isolation, the PE42540 switch is ideal for applications requiring highly-linear RF performance and fast settling time, such as test and measurement and automated test equipment (ATE). In addition, the switch … [Read more...]

New High-Performance Filter Series

 

Schurter Inc., a manufacturer of circuit protection, connectors, switches and EMC products for the electronic and electrical industries, has added the FMCC SOL three-phase high-current filters to its filter line-up. According to the company, the new compact, lightweight filters are designed to handle currents from 150 to 2,500 A at an ambient temperature 50 °C. With a … [Read more...]

2007 EMC Directory & Design Guide

 

The 2007 Interference Technology EMC Directory & Design Guide includes technical articles, information on professional societies, a directory of government personnel involved in EMI/EMC, a recap of standards published and the EMC Buyers’ Guide, which includes a Products & Services Index and Company Directory. Click here to view the issue. … [Read more...]

Rigged Smartphone Helps Visualize Electromagnetic Fields

 

[iframe src="http://player.vimeo.com/video/65321968" width="400" height="300"] A recent project from the Copenhagen Institute of Interaction Design has revealed the electromagnetic fields emitting from consumer electronics—normally invisible to the human eye—as eerie but beautiful light paintings. The project was completed as part of a week-long experimental imaging workshop … [Read more...]

Elephant in the Test Room #1 Continued – How Other EMC Sectors Dealt with the Elephant

 

Read other posts in the "Elephant in the Test Room" series here.Recap on this threadThe room: - MIL-STD RF immunity testing – 1-18GHz 200v/mThe elephant: - everyone in the room is aware that a significant fraction of the ‘calibrated’ 200v/m test field is actually created at the wrong test frequency.The culprit: - Notoriously high ‘start of band’ harmonics produced by all octave … [Read more...]

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