© Copyright Qvis® All documentation rights reserved. 403.8 RS232You can connect the DVR with POS or Keyboard through RS232.With POS system, the DVR can communicate through RS232 and network. For the POS system, theDVR can integrate the text content and even search the record through the info.The series DVR also support NKB operation. You can operate the DVR from the keyboard controlsinstead of using the control pad on the front panel of the unit.To connect a NKB keyboard to the DVR:1. Assemble the KBD keyboard according to the instructions in its accompanying installation manual.2. Connect the KBD keyboard into one of the RS232 ports on the DVR or through network.3.9 RS485When the DVR receives a camera control command, it transmits that command up the coaxial cableto the PTZ device. RS485 is a single-direction protocol; the PTZ device can’t return any data to theunit. To enable the operation, connect the PTZ device to the RS485 (A,B) input on the DVR.See X 2 8 9 H 2 8 9 H 2 8 9 H Figure 3-8X.Since RS485 is disabled by default for each camera, you must enable the PTZ settings first. Thisseries DVRs support multiple protocols such as Pelco-D, Pelco-P.To connect PTZ devices to the DVR:1. Connect RS485 A,B on the DVR 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 DVR.
