Learn from best practices within the industry, pre-testing considerations, troubleshooting tips, lessons-learned, and problem solving recommendations.

Closed Loop Radiated Immunity Testing

This article describes a proposed addition to the IEC 61000-4-3 standard. This addition would allow detailed testing of a product while coordinating and documenting the frequency changes of the test.

Gun Test of a USB3 Host Controller Board

System level tests on a USB3 controller with on-board protection were found to yield irreproducible failure levels. A root cause analysis was performed using a combination of gun tests, TLP tests, and SEED simulation. It was found that an inductive current distribution between protection and SoC may explain the actual failure levels. Solutions are presented for effective on-board protection of USB3 controller boards.

New Methods of Air Ionizer Performance Testing

This article defines ionization qualification and periodic verification test procedures for ionizers which are not addressed in STM3.1 or SP3.3, including air-assist bar ionizers, soft x-ray ionizers, an alternative method of room ionization, and non-airflow alpha ionizers.