Samsung SVR-440 User Manual page 25

External Control Device Terminal(RS–422/485)
This terminal is connected to external control devices. The JP2 termination that set is turns on and
off the termination resistance of RS–422/485 communication device. The JP2 termination is inside of
the DVR.
`
No.
Classification
1
2
3
4
When using RS–485, connect TX+ to Data+ and connect TX– to Data–.
RS-422
TX+(+Transmit Data)
TX-(- Transmit Data)
RX+(+Receive Data)
RX-(- Receive Data)
25
Description
RS-485
Data+
Data-