A CHAMBER FOR TESTING ELECTRICAL AND ELECTRONIC APPARATUS

摘要

A chamber (10) for EMC-testing electrical and electronic apparatus comprises a plurality of EM-field-reflecting ferromagnetic boundary sheets (40) connected to define an inner surface of the chamber (10) suitable for substantially containing an EM field. The chamber (10) also comprises a plurality of tiles (100), each tile (100) comprising an EM-field-absorbent material (110) and a magnetic backing material (150). The tiles (100) are detachably attached to the ferromagnetic boundary sheets (40) by the magnetic backing material (150). The plurality of tiles (100) are arranged to cover substantially the whole inner surface of the chamber (10). By attaching and removing the plurality of tiles (100) from the inner surface of the chamber (10), the chamber (10) can be converted from an EMC anechoic chamber to an EMC reverberation chamber (also known as a mode-stirred or mode-tuned chamber) and vice versa, respectively.