DESCRIPTION: CHO-BUTTON grounding contacts provide a reliable RF bond between metallic parts of an enclosure (side panels- to-frame, door-to-frame, etc.). When spaced at 4 to 8 inch intervals, the shielding effectiveness obtained is greater than 40 dB for emissions below 200 MHz. This level of shielding is normally adequate to meet commercial EMI specifications for digital devices operating below 50 MHz.
