Port Name Connection Function
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
Power input port — 90~264-12 VAC 12.5 A/-53 V 2.83 A
Power input port Power socket.
Power switch Power on/o button.
2.2.19 NVR22-16P-I/NVR22-8P-I2 Series
The gure is for reference only.
Figure 2-91 Rear panel
Table 2-35 Ports
Port Name
Connection Function
GND Ground end.
MIC IN Audio input port
Bidirectional talk input port. It is to receive the analog audio
signal output from the devices such as microphone, pickup.
MIC OUT Audio output port
Audio output port. It is to output the analog audio signal to
the devices such as the sound box.
●
Bidirectional talk output.
●
Audio output on 1-window video monitor.
●
Audio output on 1-window video playback.
RS-232
RS-232 debug
COM
It is for general COM debug to congure IP address or
transfer transparent COM data.
Network port
10/100 Mbps self-adaptive Ethernet port. Connect to the
network cable.
USB port USB port. Connect to mouse, USB storage device and more.
User's Manual
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