Connecting Basics 44
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 4-4
4.3.3 Alarm Output
Provide external power to external alarm device.
To avoid overloading, read the following relay parameters table carefully.
RS-485 A/B cable is for the A/B cable of the PTZ decoder.
4.3.4 Alarm Output Relay Parameters
Refer to the actual product for relay model information.
Between touch and
winding
1×10
7
times
(300 times/MIN)
5×10
6
times
(300 times/MIN)
1×10
5
times
(30 times/MIN)
2.5×10
4
times
(30 times/MIN)
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