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EIA-422
(redirected from Rs422)

    Also found in: Wikipedia 0.09 sec.

EIA-422

See RS-422.

(communications, standard)EIA-422 - (Formerly "RS-422") An EIA serial line standard which specifies 4-wire, full-duplex, differential line, multi-drop communications. The mechanical connections for this interface are specified by EIA-449. The maximum cable length is 1200m. Maximum data rates are 10Mbps at 1.2m or 100Kbps at 1200m. EIA-422 cannot implement a truly multi-point communications network (such as with EIA-485), although only one driver can be connected to up to ten receivers. The best use of EIA-422 is probably in EIA-232 extension cords.

Comparing EIA-422, 423, 449 to RS-232-C. Details on RS-232, 422, 423 and 485.
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The input device is normally provided with an RS232 or RS422 serial communication port.
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Also available are two Ultra-DMA 33 IDE interfaces, a pair of USB ports, dual serial I/O with optional RS422 drivers and a parallel port.
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Four of Oxford's high-speed UARTs are included, providing full modem control and baud rates up to 1Mbaud over RS232, RS422 and RS485 and two USB2.
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