QSD42908 User’s Manual
2 How to Make a RS-232 Connect Cable
QSD42908 has standard DB9
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 |
3 How to Make a UTP network Connect Cable
Material and tool
One twist cable (8 pin, the length can be defined as to the actual demand, but must be within 100m), 2 standard RJ45 head, one tool for RJ45.
Suggestion: have a network cable test tool to test each cable made.
Pin definition
To make the network cable according to your actual needs there are two options:
(1)Use the following method to make the network cable when DVR is connected to a network hub or switch.
The corresponding relationship of the direct cable
94
