Seagate ST31000523AS User Manual download pdf (Page 27)

2. Connect the KBD keyboard into one of the RS232 ports on the DVR or through

network.

3.9 RS485

When the DVR 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 DVR. Since RS485 is disabled by default for each camera, you

need to enable the PTZ settings first. This series 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. Follow the instructions for configuring a camera to enable each PTZ device on the

DVR.

3.10 Other Interfaces

There are still other interfaces on the DVR, such as USB ports. You can refer to the

Figure 3-9 for more information.

Figure 3-9

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Seagate ST31000523AS User Manual Page 27