CBC ZC-PT218 Manual De Usuario

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User’s Manual
 
 
 
13 
2.7 RS-485 
Connector 
RS-485 is the interface that the PTZ camera uses to communicate with its control 
unit. Connect the control keyboard to the camera via the terminal block. The 
recommended cables for RS-485 communication are CAT 5 cables; the maximum 
cable length for wire with a gauge above 24 is 4000 feet (1219 meters). If the total 
cable length exceeds 4000 feet, using a repeater to amplify the signals is 
recommended. 
                                           
 
 
Corresponding Pins 
(22-Pin Connector) 
Definition 
7,10 
T+, R+ (D+) 
Reserved 
 
 
Reserved 
 
 
Reservied 
 
 
8,9 
T-, R- (D-)