Dahua NVR5208-EI User Manual page 49

Icon Port Name
RS-232 RS-232 debug COM
VGA video output
VGA
port
MIC IN Audio input port
MIC OUT Audio output port
Alarm input port 1–
1–8
8
GND
NO1–NO3
Alarm output port
1–3
C1–C3
A
RS-485
communication
port
B
Power input port
Power Switch —
PoE PORTS —
Function
It is for general COM debug to configure IP address or
transfer transparent COM data.
VGA video output port. Output analog video signal. It
can connect to the monitor to view analog video.
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
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.
●
There are two groups. The first group is from port 1
●
to port 4; the second group is from port 5 to port 8.
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.
Alarm input ground port.
3 groups of alarm output ports. (Group 1: port
●
NO1–C1; Group 2: port NO2–C2; Group 3: port
NO3–C3). 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.
●
RS485_A port. It is the cable A. You can connect to the
control devices such as speed dome PTZ.
RS485_B. It is the cable B. You can connect to the
control devices such as speed dome PTZ.
Input 12 VDC/4 A.
Power on/off button.
Built-in Switch. Support PoE or ePoE function.
For ePoE series product, port 1 to port 8 are the
●
ePoE ports. ePoE port supports 300 meters@100
Mbps, 800 meters@10 Mbps. Port 9 to port 16 are
general PoE ports.
The 8 PoE series product supports total 130 W.
●
The 16 PoE series product supports total 130 W.
●
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User's Manual