Dahua NVR100 series User Manual page 140

Please refer to the following sheet for detailed information.
Name
Power switch
Power input
port
MIC IN
MIC OUT
VIEDEO OUT
1～16
NO1～NO5
C1～C5
NC5
A
Function
Power on-off button
/
AC90V~264V-12V12.5A/-53V2.83A
/
Audio input port Bidirectional talk input port. It is to receive the
analog audio signal output from the devices such
as microphone, pickup.
Audio output port. It is to output the analog audio
Audio output port
signal to the devices such as the sound box.



Video output port CVBS output

Alarm input port
1～16

Video output port CVBS output

Alarm output port
1～5



RS-485
RS485_A port. It is the cable A. You can connect to
the control devices such as speed dome PTZ.
communication
Figure 2-79
Bidirectional talk output.
Audio output on 1-window video monitor.
Audio output on 1-window video playback.
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.
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.
130