Dahua NVR100 series User Manual page 119

Name
Network port
RS-232
RS-232
COM.
High
HDMI
Media Interface
VGA
VGA
output port
Alarm input port
1～8
1～8
GND
NO1～NO3
Alarm output port
1～3
C1～C3
A
RS-485
communication
port
B
Power input port
Power switch /
PoE
/
PORTS
MIC IN Audio input port
Function
10M/100M/1000Mbps self-adaptive Ethernet port.
Connect to the network cable.
debug It is for general COM debug to configure IP
address or transfer transparent COM data.
High definition audio and video signal output port.
Definition 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
video
signal. It can connect to the monitor to view analog
video.

There are two groups. The first group is from
port 1 to port 4; the second group is from port
5 to port 8. 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.
Alarm input ground port.

3 groups of alarm output ports. (Group 1：port
NO1 ～ C1,Group 2:port NO2 ～ C2,Group
3:port NO3～C3）).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.
Input AC 100~240V.
Power on-off button.
Bult-in Switch. Support PoE.
The 8 PoE series product supports total 48V
120W. One PoE port max supports 15W.
Bidirectional talk input port. It is to receive the
analog audio signal output from the devices such
as microphone, pickup.
109