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Dahua Network Video Server
User’s Manual
13
Temperature
-30
℃
~+70
℃
3.7
RS485
When the NVS receives a camera control command, it transmits that command up the coaxial
cable to the PTZ device. RS485 is a single-direction protocol; the PTZ
device can’t return any
data to the unit. To enable the operation, connect the PTZ device to the RS485 (A,B) input on
the NVS.
Since RS485 is disabled by default for each camera, you must enable the PTZ settings first.
This series NVSs support multiple protocols such as Pelco-D, Pelco-P.
To connect PTZ devices to the NVS:
1. Connect RS485 A,B on the NVS rear panel.
2. Connect the other end of the cable to the proper pins in the connector on the camera.
3. Please follow the instructions to configure a camera to enable each PTZ device on the
NVS.