Electronics Industries Assoc. (EIA) standard RS-422 defines serial data communications for distances up to 300m/1000 ft. More costly than RS-232 but has a high degree of immunity to interference. Widely used for control links around production and post-production equipment.canonglossaryus
Electronics Industries Assoc. (EIA) standard RS-232 defines serial data communications for short distances (up to 10 meters). In computers, the RS 232 port has generally been replaced by the USB port.