Dahua NVR2104-I2 User Manual

Name Function
VIEDEO OUT
Video output
port
CVBS output.
1–16
Alarm input port
1–16
●
There are four groups. The rst group is from port 1 to
port 4, the second group is from port 5 to port 8, the third
group is from 9 to 12, and the fourth group is from 13 to
16. 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.
NO1–NO3
Alarm output
port 1–3
●
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.
C1–C3
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.
CTRL (CTRL 12
V)
—
Controller 12 V power output. It is to
control the on-o alarm relay output. It can
be used to control the device alarm
output. At the same time, it can also be
used as the power input source of some
devices such as the alarm detector.
The two ports
serve as another
group of alarm
output ports.
P (+12 V) —
+12 V power output port. It can provide
the power to some peripheral devices such
as the camera or the alarm device. Please
note the supplying power shall be below 1
A.
Network port
One 10/100/1000 Mbps self-adaptive Ethernet port. Connect
to the network cable.
eSATA eSATA port
External SATA port. It can connect to the device of the SATA
port. Please jump the HDD when there is peripheral
connected HDD.
USB port
USB port. Connect to mouse, USB storage device, USB burner
and more.
RS-232
RS-232 debug
COM
It is for general COM debug to congure IP address or
transfer transparent COM data.
HDMI
High Denition
Media Page
High denition audio and video signal output port. It
transmits uncompressed high denition video and multiple-
User's Manual
37

Dahua NVR2104-I2 Specifications

General

Brand	Dahua
Model	NVR2104-I2
Category	Network Hardware
Language	English