99
When supplying power from external power source to the alarm device, the alarm device
should be common-grounded with decoder.
Diagram of alarm input Figure 5-2
Alarm Output Port 5.3
It is 8-channel switching volume alarm output (normally open contact), and there should be
additional power supply to external alarm device.
To avoid overload to damage the Device, please refer to relay parameters. See "5.4 Relay
Parameters of Alarm Output Port."
RS–485 A line and B line are used for connecting the line A and line B on the PTZ decoder.
Diagram of alarm input port module Figure 5-3
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