DVR systems NVR38xx Series - Manual (Page 103)

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Figure 8-34 PTZ Setup
Figure 8-35
Please refer to the following sheet for detailed information.
Parameter Function
Event
Type It includes local alarm/network alarm/other.
Local alarm: Device detects alarm from input port.
Network: Device detects alarm from network.
Alarm in Select corresponding alarm channel.
Enable You need to draw a circle here so that system can detect the alarm
signal.
Type There are two options: normal open and normal close. NO becomes
activated in low voltage, NC becomes activated in high voltage.