Dahua NVR52-4KS2 Series User Manual page 61

Name
Alarm input port
1–16
1–16
GND
NO1–NO3
Alarm output
port 1–3
C1–C3
A
RS-485
communication
port
B
CTRL (CTRL 12
—
V)
P (+12 V) —
Network port
eSATA eSATA port
USB port
RS-232 debug
RS-232
COM
High Definition
HDMI
Media Page
Function
There are four groups. The first 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.
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.
Controller 12 V power output. It is to
control the on-off 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.
+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.
One 10/100/1000 Mbps self-adaptive Ethernet port. Connect
to the network cable.
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. 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.
45
User's Manual
The two ports
serve as another
group of alarm
output ports.