Dahua NVR41 series, Руководство пользователя

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User's Manual
38
Name Function
MIC IN Audio input port
Bidirectional talk input port. It is to receive the
analog audio signal output from the devices
such as microphone, pickup.
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.
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.
Ground Alarm input ground end.
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.