Please connect the NC port of the alarm sensor to the DVR alarm input(ALARM)
Use the same ground with that of DVR if you use external power to the alarm device.
Figure 3-17
3.8.3 Alarm Output Port
Provide power to peripheral alarm device.
To avoid overloading, please read the following relay parameters sheet carefully.
RS485 A/B cable is for the A/B cable of the PTZ decoder.
Relay Specification
Between touches with same
polarity
Between touches with different
polarity
Between touch and winding
Between touches with same
polarity
3.9 RS232
You 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, the
DVR can integrate the text content and even search the record through the info.
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