Dahua N41C1P User Manual page 29

Name
MIC OUT Audio output port
Alarm input port
1–4
1–4
GND
N1, N2
Alarm output port
1–2
C1, C2
A
RS-485
communication
port
B
Network port
USB port
RS-232 debug
RS-232
COM
High Definition
HDMI
Media Interface
VGA video output
VGA
port
PoE PORTS /
Function
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.
● 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.
Alarm input ground port.
● 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.
RS485_A port. It is the cable A. You can
connect to the control devices such as speed
dome PTZ.
RS485_B. It is the cable B. You can connect to
the control devices such as speed dome PTZ.
10/100/1000 Mbps self-adaptive Ethernet port.
Connect to the network cable.
USB port. Connect to mouse, USB storage
device, USB burner and more.
It is for general COM debug to configure IP
address or transfer transparent COM data.
High definition audio and video signal output
port. It transmits uncompressed high definition
video and multiple-channel data to the HDMI
port of the display device. HDMI version is 1.4.
VGA video output port. Output analog video
signal. It can connect to the monitor to view
analog video.
Built-in Switch. Support PoE.
For PoE series product, you can use this port to
provide power to the network camera.
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User's Manual