AVer EB3004 NET & NET+ - Manual (Page 14)

8
RS-485 Pin Definition
When connect PTZ camera through RS485 interface, please refer to the following pin definition to
connect the DVR and PTZ.
Pin # DVR site PTZ site
21 TX+ RS485 TX+ signal RS485 RX+ signal
22 TX- RS485 TX- signal RS485 RX- signal
23 RX+ RS485 RX+ signal RS485 TX+ signal
24 RX- RS485 RX- signal RS485 TX- signal
i If user uses the 2 wires for the PTZ camera connection, please connect to the RS-485 TX+
and TX- of the DVR site.