The corresponding relationship of cross cable
2 RS-232 connect cable made method
Pin definition
“I” means DVR input and O means DVR output.
Pin index | Name | I/O | Description |
1 | DCD | I | Carrier Detect |
2 | RXD | I | Receive Data |
3 | TXD | O | Transfer Data |
4 | DTR | O | Terminal Device Ready |
5 | GND |
| Ground |
6 | |||
7 | RTS | O | Request to Send |
8 | CTS | I | Clear Data |
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