Dahua NVR5208-EI User Manual page 52

Name
Alarm input port 1–
1–16
16
Ground
NO1–NO5
C1–C5
Alarm output port
1–5
NC5
A
RS-485
communication
port
B
CTRL (CTRL 12
—
V)
P (+12 V) —
RS-232 RS-232 debug COM
VGA video output
VGA
port
PoE PORTS —
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 end.
5 groups of alarm output ports. (Group 1: port NO1–C1,
●
Group 2: port NO2–C2, Group 3: port NO3–C3, Group 4:
port NO4–C4, Group 5: port NO5, C5, NC5). 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.
●
NC: Normal close alarm output port.
●
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.
It is for general COM debug to configure IP address or
transfer transparent COM data.
VGA video output port. Output analog video signal. It can
connect to the monitor to view analog video.
Built-in Switch. Support PoE or ePoE function.
For ePoE series product, port 1 to port 8 are the ePoE ports.
ePoE port supports 300 meters@100 Mbps, 800 meters@10
Mbps. Port 9 to port 16 are general PoE ports.
The 16 PoE series supports total 150 W.
36
User's Manual
The two ports serve
as another group
of alarm output
ports.