FOXBORO P0916BX I/O module
Design considerations Adherence to the following design considerations should mitigate the effects of any extraneous EM interference in Command, Control, Communications, Computer, Intelligence, Surveillance, and Reconnaissance (C4ISR) facilities. a. Equipotential plane. The equipotential plane (described in chapter 3) shall be bonded to the earth electrode subsystem at multiple points. Such an equipotential plane exists in a building with a metal or raised floor or ceiling grid electrically bonded together, or, in a building with a concrete floor with a ground grid imbedded in it, connected to the facility ground. Equipment cabinets are then connected to the equipotential plane. Chassis are connected to the equipment cabinets and all components, signal return leads, etc., are connected to the chassis. The equipotential plane is then terminated to the earth electrode subsystem to assure personnel safety and a low impedance path to ground. Planes are not required in areas of the facility where no communications equipment (CE) equipment is or will be installed.
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