Dahua HDCVI series, User Manual

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48
SN Icon Name Note
device is using external
power, please make sure
the device and the DVR
have the same ground.
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.
T+
、
T-
、
R+
、
R- Four-wire full-duplex 485
port
Four-wire full-duplex 485 port.
T+
，
T- is the output wire.
R+
，
R- is the input wire.
CTRL 12V Control power output Controller 12V power output.
It is to control the on-off alarm
relay output.
4 VIDEO OUT Video output port Connect to video output
devices such as TV.
5 AUDIO OUT
Audio output port
Audio output port. It is to
output the analog audio signal