IMPORTANT: Before you proceed with cabling, you must know whether the devices you are connecting to your multiport are DTE (Data Terminal Equipment) or DCE (Data Communication Equipment). The following devices are generally DTE: terminals, printers, and computers like the IBM PC. The following devices are DCE: modems and some computers.
If your device transmits data on Pin 2 or receives data on Pin 3, it is DTE. If your device receives data on Pin 2 and transmits data on Pin 3, it is DCE. However, to verify the interface requirements for your device, please refer to the Owner's Manual for that device.
BayTech's standard configuration of its multiports is all ports DCE with
DCE PORT SIGNALS
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| 1 | PGND | Protective ground |
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| 2 | TX | Input | Data in |
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| 3 | RX | Output | Data out |
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| 4 | RTS | Input | Internally enabled if no wire connected |
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| 5 | CTS | Output |
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| 6 | DSR | Output | +12V when multiport |
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| 7 | SGND | Signal ground |
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| 8 | DCD | Output | +12V when multiport |
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| 20 | DTR | Input | Transmit enabled when +12 V. |
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