connector wiring scheme
9 pin D-SUB male connector
9 pin D-SUB female
connector
| Pin | Name | Description |
|---|---|---|
| 1 | n/c | Not connected |
| 2 | DSR | Data Set Ready |
| 3 | GND | Ground |
| 4 | n/c | Not connected |
| 5 | RxD | Receive Data |
| 6 | DTR | Data Terminal Ready |
| 7 | DCD | Output from modem |
| 8 | GND | Ground |
| 9 | TxD | Transmit Data |