TECHAMERICA EIA-484-A
TECHAMERCA EA-484-A 1995-JUN-01 Electrcal and Mechancal nterface Characterstcs and Lne Control Protocol Usng Communcaton Control Characters for Seral Data Lnk between a Drect Numercal Control System and Numercal Control Equpment Employng Asynchronous Full Duplex Transmsson