RS-232 made easy: connecting computers, printers, terminals, and modems
Completely updated and revised, this bible on the RS-232 interface offers easy-to-follow practical information on connecting printers, terminals, port boards, data switching, servers, buffers, and modems. Over 3,600 cable-designed diagrams.
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20 Data Terminal 20 XON/XOFF Note 22 Ring Indicator(In 22 Ring Indicator(Out 24 External Transmit 9 Ring attached device C01 Pin Function(Direction C14 Pin Chassis Ground CJ CJ CJ CJ OC CJ Clear to Send(In Clear to Send(Out CM CM CM Computer Port connected to leads connectors Data Carrier Detect(In Data Carrier Detect(Out data communication equipment Data Set Ready Data Set Ready(In Data Set Ready(Out data terminal equipment Data Terminal Ready Data Terminal Ready(In Data Terminal Ready(Out DB25S Gender DB9P Female Pin Function(Direction Female PinConfig flow control leads Frame Ground Ground 2 Transmit Ground 7 Signal Ground 8 Carrier Ground 8 Data Male Pin Function(Direction Male PinConfig modem null-modem optioned P03 Pin Printers Port Protective Ground receive data Receive Data(In Receive Data(Out recti Request to Send Request to Send(In Request to Send(Out ro ro ro Signal Ground 20 synchronous Terminal Port Transmit Data Transmit Data(In Transmit Data(Out