Manual

58
Icon
Port Name
Function
1～4
Alarm input port
1～4
 They are to receive the signal from the external
alarm source. There are two types; NO (normal
open)/NC (normal close).
 When your alarm input device is using external
power, please make sure the device and the
NVR have the same ground.
GND
Alarm input ground port.
N1,N2
Alarm output port
1～2
 2 groups of alarm output ports.（group 1：port
NO1～C1, group 2：port NO2～C2）. Output
alarm signal to the alarm device. Please make
sure there is power to the external alarm device.
 NO：Normal open alarm output port.
 C：Alarm output public end.
C1～C2
A
RS-485
communication
port
RS485_A port. It is the cable A. You can connect to
the control devices such as speed dome PTZ.
B
RS485_B.It is the cable B. You can connect to the
control devices such as speed dome PTZ.
2.2.9 NVR44/44-8P/44-16P Series
The NVR44 series rear panel is shown as below. See Figure 2-31.
Figure 2-31
The NVR44-8P series rear panel is shown as below. See Figure 2-32.
Figure 2-32
The NVR44-16P series rear panel is shown as below. See Figure 2-33.
Figure 2-33
Please refer to the following sheet for detailed information.