Nvr74 Series - Dahua NVR100 series User Manual

Name
C1 ～ C 3
A
B
Power switch
PoE
PORTS
MIC IN
MIC OUT

2.2.13 NVR74 Series

The NVR74 series rear panel is shown as below. See Figure 2-37.
Please refer to the following sheet for detailed information.
Icon
Function
1 3
～
C
RS485_A port. It is the cable A. You can connect
RS-485
to the control devices such as speed dome PTZ.
communication
RS485_B.It is the cable B. You can connect to the
port
control devices such as speed dome PTZ.
Power input port Input AC 100~240V.
/ Power on-off button.
Bult-in Switch. Support PoE.
/ The 8 PoE series product supports total 48V
120W. One PoE port max supports 15W.
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.
Figure 2-37
Name
Power switch Power on/off button.
NO1 C1,Group 2:port NO2
～
3:port NO3 ～ C 3 ） ) .Output alarm signal to the
alarm device. Please make sure there is
power to the external alarm device.
NO ： N ormal open alarm output port.
： A larm output public end.
Bidirectional talk output.
Audio output on 1-window video monitor.
Audio output on 1-window video playback.
Function
C2,Group
～
65