DS-7108HI-S series Net DVR User Manual
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The corresponding relationship of cross cable
2 RS-232 Connect Cable Made Method
DS-7108HI-S has standard DB9 RS-232 interface, like PC COM port.
Material and tool
One CAT5 cable (4 twisted pairs),
Two DB9 plugs,
Soldering iron and solder
Suggestion: have a network cable test tool to test each cable made.
Pin definition
“I” means DVR input and “O” means DVR output.
Now, you can make RS232 cable for DS7108HI-S base on the above information
Note: For more information about RS232 serial port, please refer to internet for detail.