Dahua Technology DHI-XVR5108HS-4K, User Manual, Page: 32 / 318

User's Manual
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No. Port Name Function
3 Power button Turns on/off the DVR.
4 Audio input port Receives audio signal output from the devices such as microphone.
5
Audio input port
(MIC IN)
Tow-way talk input port which receives analog audio signal output
from the devices such as microphone and pickup.
6
Audio output port
(MIC OUT) Tow-way talk output port which outputs the analog audio signal to
the devices such as the sound box.
7 Audio output port
Outputs audio signal to the devices such as the sound box.
8 Video output port Connects to video output devices such as TV.
9 Video input port Connects to analog camera to input video signal.
10
Alarm input port
1–16
4 groups of alarm input ports (Group 1: port 1 to port 4; Group 2:
port 5 to port 8; Group 3: port 9 to port 12; Group 4: port 13 to
port 16). These ports receive the signal from the external alarm
source. There are two types: NO (normally open) and NC (normally
closed).
When your alarm input device is using external power, please make
sure the input device and the DVR connect to the same ground.
Alarm output port
1–5 (NO1–NO5;
C1–C5; NC5)
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). These ports output alarm
signal to the alarm device. Please make sure power supply to
the external alarm device.
NO: Normal open alarm output port.
C: Alarm output public end.
NC: Normal close alarm output port.
RS485
communication
port Connects to the control devices such as speed dome PTZ.
RS485_A port is connected by the cable A and RS485_B is
connected to the cable B.
Four-wire full-
duplex 485 port (T+,
T-, R+, R-)
Four-wire full-duplex 485 port. T+ and T- is the output wire; R+ and
R- is the input wire.
Power output
control for alarm
(CTRL 12V) Controls power output for alarm. The current is 500 mA.
Turns off power output when there is alarm output.
Turns on power output when the alarm is cleared.
12V power output
port Provides power to external devices such as camera and alarm
device. Please note the power supply shall be below 1 A.
Ground.
10 Network port Connects to Ethernet port.