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1.6.3 RS485 Pin Definition
When connect PTZ camera through RS485 interface, please refer to the following pin definition to
connect the DVR and PTZ.
Pin #
If user uses the 2 wires for the PTZ camera connection, please connect to the RS-485 TX+ and
i
TX- of the DVR site.
DVR site
TX+
RS485 TX+ signal
TX-
RS485 TX- signal
RX+
RS485 RX+ signal
RX-
RS485 RX- signal
PTZ site
RS485 RX+ signal
RS485 RX- signal
RS485 TX+ signal
RS485 TX- signal
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