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Testing

FCC Expands Role of TCBs in Equipment Authorization Regime

Changes May Speed Market Access, but Testing Challenges Remain Just before the end of 2014,...

Conductive Foam Gaskets have X, Y & Z Axis Conductivity for Maximum EMI Shielding Effectiveness

Available as standard gaskets, custom designs or sheet stock, durable 2700 Series Conductive Foam...

Understanding Symbols: Static Electricity Hazards

One of the critical building blocks for your product safety labels is symbols. This month,...

The Turtle Method of Selecting EMC Commercial Test Software

Over the last few years it has become evident to me that there is...

Failing Product Safety Testing in the 21st Century

Even though safety is second nature to electrical product designers, testing laboratories still see...
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A Theory of Shielding Electromagnetic Waves: Revisiting Shielding Effectiveness Equations

In this article, we analyze the shielding effectiveness equations (SE = R + A...

Complying With the EU’s EMC Directive Without 3rd Party Testing

A common path to achieving compliance to the European Union’s (EU’s) EMC Directive 2004/108/EC...

Importance of Traceability in EMI Measurements

This article will introduce the concept of traceability, discuss the role an EMC test laboratory must assume to ensure traceability of test results and will introduce a future amendment to CISPR 16-1-1 which describes the requirements for calibration of EMI receivers and spectrum analyzers.

Radiated Emission Measurements in the Semi-Anechoic Chamber at 3, 5, and 10 m Distance: Results and Empirical Estimates

Radiated emission (RE) measurements in the frequency range 30 … 1000 MHz are usually...

Theory of Equipment Grounding Impedance

Values for grounding impedance appear in many standards, including UL 478 and 1244, CSA...
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