Computer system housing for attenuating electromagnetic interference (EMI)

摘要

A computer system housing for providing an attenuating barrier for electromagnetic interference (EMI) noise. The computer system housing includes a backplane wall having a plurality of connectors for receiving PCB's, and a bulkhead wall coupled to the backplane wall. The bulkhead wall defines a plurality of bulkhead slots through which connector receptacles of printed circuit boards (PCB's) can extend. An EMI bulkhead gasket is positioned on the bulkhead wall. A conductive metal impregnated, elastomer EMI gasket is positioned on a mounting flange of the bulkhead wall. The computer system housing also includes a plurality of bulkhead plates. The bulkhead plates contact the EMI bulkhead gasket and the elastomer EMI gasket along their entire peripheral edges so that EMI noise is conducted through these gaskets to the bulkhead wall. The computer system housing further includes a bulkhead plate alignment and mounting system that does not employ separable fasteners. This allows "hot plugging" of PCB's to the computer system housing.