HP Visualize c3000 hp Visualize b1000 and c3000 workstations owner's guide (a5 - Page 34
RS-232C Serial Input/Output Connector
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Table 1-3 System Overview System Unit Rear Panel Connectors RS-232C Serial Input/Output Connector You can attach a variety of pointing devices (such as a mouse or trackball), or peripheral devices (such as printers, plotters, modems, and scanners) to the RS-232C Serial Input/Output (SIO) ports on this computer. Consult the documentation that accompanies each pointing or peripheral device for specific information concerning its use. The SIO ports are programmable. This means that you can set functions such as bit rate, character length, parity and stop bits using the System Administration Manager (SAM) or by selecting a system special device file with the functions already programmed. The SIO ports are used as an interface for serial asynchronous devices to the CPU. Table 1-3 shows the SIO connector pin listings. The serial connectors are 9-pin D-sub connectors. Signal names are those specified in the EIA RS-232 standard. Serial I/O Pins Pin No. Signal Description 1 DCD Data Carrier Detect 2 RXD Receive Data 3 TXD Transmit Data 4 DTR Data Terminal Ready 5 GND Ground 6 DSR Data Set Ready 7 RTS Request To Send 8 CTS Clear To Send 9 RI Ring Indicator 34 Chapter 1