Connecting Basics 34
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, please read the following relay parameters table carefully.
RS485 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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