Chassis EMI/RFI Issues:
Front doors may be added to the front of the chassis to completely enclose and shield the cards held within the chassis. When chassis doors are used the card cage needs to be recessed to allow room for card panel connectors and cable bend radius. Card front panels may be purchased with EMI protection [Front Panel Manufacturers]. Aluminum Air diverters may be used inside the chassis to help shield one card from another [Slot By-pass cards]. Of course metal and not plastic card guides would help with metal to metal contact of the Air diverters [Card Guide Manufacturers].
Metal dust caps can be placed on unused external connectors to shield their pins and provide EMI protection [Connector Dust Cap manufacturers]. EMI Gaskets placed around all the connector cut-outs will reduce EMI. This links provides manufacturers of Conductive Elastomer Plastic Gaskets, Beryllium Copper BeCu Metal Gaskets and a number of EMI shielding methods. AC Power connectors can also be protected and filtered, cables can be shielded from RFI. This link provides a list of Power Connector Manufacturers. Ground the chassis to the Equipment Rack using a Ground Lug attached to the chassis.
Oxley
{Chassis Mounting Filters, Filtered Connectors}
Chassis Grounding; next page in the series
EMI/EMC Military Standards:
MIL-STD-461E Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment
MIL-STD-462 Measurement of Electromagnetic Interference Characteristics of Subsystems and Equipment
How To Specify a Equipment Chassis; Section Index page
Custom EMI and RFI Products; Manufacturers
