Nvr22-16P-I/Nvr22-8P-I2 Series - Dahua NVR52-EI Series User Manual

2.2.18 NVR22-16P-I/NVR22-8P-I2 Series

The figure is for reference only.
Port Name
MIC IN
MIC OUT
RS-232
VGA
HDMI
NO1
C1
CTRL
Figure 2-74 Rear panel
Table 2-32 Ports
Connection Function
GND Ground end.
Bidirectional talk input port. It is to receive the analog
Audio input port audio signal output from the devices such as microphone,
pickup.
Audio output port. It is to output the analog audio signal
to the devices such as the sound box.
Audio output
● Bidirectional talk output.
port
● Audio output on 1-window video monitor.
● Audio output on 1-window video playback.
RS-232 debug It is for general COM debug to configure IP address or
COM transfer transparent COM data.
10/100 Mbps self-adaptive Ethernet port. Connect to the
Network port
network cable.
USB port. Connect to mouse, USB storage device and
USB port
more.
VGA video VGA video output port. Output analog video signal. It can
output port connect to the monitor to view analog video.
High definition audio and video signal output port. It
High Definition transmits uncompressed high definition video and
Media Interface multiple-channel data to the HDMI port of the display
device. HDMI version is 1.4.
● 1 group of alarm output ports (port NO1–C1). Output
alarm signal to the alarm device. Please make sure
Alarm output
there is power to the external alarm device.
port
● NO: Normal open alarm output port.
● C: Alarm output public end.
Controllable power supply output.
Control the output of the on-off button
alarm relay. It controls the alarm device
— with the presence or absence of
voltage. It can also be used as power
input for some alarm devices such as
alarm detectors.
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User's Manual
The two ports
serve as
another group
of alarm