Dahua NVR41 series, User Manual

Page: 64 / 416

User's Manual
50
Name Function
MIC OUT Audio output port
Audio output port. It is to output the analog audio
signal to the devices such as the sound box.
● Bidirectional talk output.
● Audio output on 1-window video monitor.
● Audio output on 1-window video playback.
VIEDEO OUT Video output port CVBS output.
1
～
16
Alarm input port
1
～
16
● 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.
GND Alarm input ground port.
NO1
～
NO5
Alarm output port
1
～
5
● 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.
C1
～
C5
NC5
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 12V /
Controller 12V 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.
+12V /
+12V 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 1A.
Network port
One 10M/100M/1000Mbps self-adaptive
Ethernet port. Connect to the network cable.