User`s manual

User’s Manual

2.7 RS-485 Connector Definition

RS-485 is the interface that communicates the Dome Camera and its control

device. Please connect the control keyboard to the Dome Camera through the

terminal block. The recommended cables for RS-485 communication are CAT 5

cables; maximum cable length for over 24-gauge wire is 4000 feet (1219

meters). If the total cable length exceeds 4000 feet, using a repeater to maintain

the signals is recommended. Please refer to the figure and table below for pin

defination and wiring.

Corresponding Pins

(22-Pin Connector)

Definition

1 7,10 T+, R+ (D+)

2~4 Reserved

5 8,9 T-, R- (D-)