Product Information
System Unit Rear Panel Connectors
Serial Input/Output Connectors
There are a variety of pointing devices (mouse or trackball) or peripheral devices that can attach to the Serial Input/Output (SIO) ports on the worksta- tion. Peripheral devices include printers, plotters, modems, and scanners. Consult the documentation that accompanies each peripheral device for spe- cific information concerning its use.
The SIO ports are programmable, allowing functions such as bit rate, character length, parity, and stop bits to be set. The SIO Ports are used as interfaces for serial asynchronous devices to the CPU. The ports operate at up to a 460.8 K baud rate.
Table 5 shows the SIO connector pin listings. The serial connectors are
Table 5 | Serial I/O Pins |
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| Pin No. |
| Signal | Description |
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| 1 |
| DCD | Data Carrier Detect |
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| 2 |
| RXD | Receive Data |
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| 3 |
| TXD | Transmit Data |
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| 4 |
| DTR | Data Terminal Ready |
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| 5 |
| GND | Ground |
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| 6 |
| DSR | Data Set Ready |
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| 7 |
| RTS | Request To Send |
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| 8 |
| CTS | Clear To Send |
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| 9 |
| RI | Ring Indicator |
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