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Figure 4. 24-channel and 32-channel DVR Alarm Output Linkage
Note
When alarm output is inactive, “NC” is connected with “COM”,
“NO” is disconnected with “COM”.
When alarm output is active, “NO” is connected with “COM”,
“NC” is disconnected with “COM”
Section 10 PTZ Control Connections
The DVR can control the actions of many PTZs simultaneously through the RS-422 bus, and
identify the PTZ through the address set up by the decoder.
1. RS422
Figure 5. Standard RS-422 detail specification
Cable 1, 2 are positive and negative cable for transmission and can connect to Rx+, Rx- in
PTZ or Speed dome respectively; Cable 3, 4 are positive and negative cable for receive.