Dahua Technology XVR Series User Manual

User’s Manual
40
Table 3-20 Rear panel description
No.
Port Name
Function
1 GND Ground.
2 Power input port Inputs power.
3 Power button Turns on/off the Device.
4 Audio input port
Receives the analog audio signal output from the devices such as
microphone.
5
Audio input port
(MIC IN)
Tow-way talk input port which receives
the analog audio signal
output from the devices such as microphone, 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 the analog audio signal to the devices such as the sound box.
8 Video output port
Connect to video output devices such as TV.
9
Alarm input port 1–
16
Four groups of alarm output 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, make sure
that the device and the NVR have the same ground.
Alarm output port
1–5 (NO1–NO5;
C1–C5; NC5)
Five 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. Make sure that power supply to the external
alarm device.
NO: Normally open alarm output port.
C: Alarm output public end.
NC: Normally closed alarm output port.
RS-485
communication
port
You can connect to the control devices such as speed dome PTZ. RS-
485_A port is connected by the cable A and RS-485_B is connected
to the cable B.
Four-wire full-
duplex RS-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.
Control power
output (CTRL 12V)
Controls the 6
th
channel power output for alarm.
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 supplying power shall be below 1 A.
Ground.

Dahua Technology XVR Series Specifications

General

Brand	Dahua Technology
Model	XVR Series
Category	DVR
Language	English