COP-USA DVRPRO04 - Manual (Page 62)

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Chapter 11
Normal Closed, NC
When the sensor is of the NC type, DI is connected to the NC connec-
tion of the sensor and GND is connected to the COM connection of
the sensor. When the alarm is triggered, the circuit connected to the
alarm sensor input of the DVR will be open.
Please set the Normal Open or Normal Closed value for each DI, accord-
ing to the type of connected sensor, using the following screen, and also
select the appropriate Delay time (the DVR system alarm delay interval) for
each connected sensor.
Figure 11-4: DIO Setting
Output Settings
DO relay output could support connected alarm equipment rated as high as
0.5A 24V DC, and also could be configured for either normal open or normal
closed output by means of a Jumper.
* Default is NO
Figure 11-5: Jumper of Video copture card
# The circle part as the jumper