Try to wire up PTZ cam to a DVR. DVR have a dsub-15p rs485 male connecter. meun show pin 1 rs485 +,pin 2 rs485 -, pin 8 ground. the ptz cam is panasonic .it has a ps data wire (5 wires inside) ,Brown--ground, Red-- data transmission T(B),Orange--data transmission T(A),Yellow--datd reception
R(B), Green--data reception R(A). Which 2 wires I need to wire up the DVR pin 1 & pin 2? Thank.