Connector - Serial (PC 25)25 PIN D-SUB MALE at the computer. | (at the computer) |
Pin | Name | Direction | Description |
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1 | SHIELD | --- | Shield Ground | 2 | TXD | Output | Transmit Data | 3 | RXD | Input | Receive Data | 4 | RTS | Output | Request to Send | 5 | CTS | Input | Clear to Send | 6 | DSR | Input | Data Set Ready | 7 | GND | --- | System Ground | 8 | CD | Input | Carrier Detect | 9 | n/c | --- | | 10 | n/c | --- | | 11 | n/c | --- | | 12 | n/c | --- | | 13 | n/c | --- | | 14 | n/c | --- | | 15 | n/c | --- | | 16 | n/c | --- | | 17 | n/c | --- | | 18 | n/c | --- | | 19 | n/c | --- | | 20 | DTR | Output | Data Terminal Ready | 21 | n/c | --- | | 22 | RI | Input | Ring Indicator | 23 | n/c | --- | | 24 | n/c | --- | | 25 | n/c | --- | |
Note: Direction is DTE (Computer) relative DCE (Modem). Note: Do not connect SHIELD(1) to GND(7).
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