Quaddrix QT-500-16

2 RS-232 connect cable made method
QT-500 has standard DB9 RS-232 interface, like PC COM port.
Pin definition
It 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