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3.2.5 1U
No.
Port Name
1
Alarm input port
1–16
2
Alarm output port
1–3 (NO1–NO3;
C1–C3)
3
Video input port
4
Audio input port
5
Audio output port
6
HDMI port
7
USB port
8
Network port
RS485
9
communication
port
10
Power input port
Function
Ground terminal.
4 groups of alarm input ports (Group 1: port 1 to port 4; Group 2:
port 5 to port 8; Group 3: port 9 to port 12; Group 4: port 13 to
port 16). These ports receive the signal from the external alarm
source. There are two types: NO (normal open) and NC (normal
close).
When your alarm input device is using external power, please
make sure the alarm input device and the DVR connect to the
same ground.
3 groups of alarm output ports. (Group 1: port NO1–
C1,Group 2:port NO2–C2,Group 3:port NO3–C3）). These
ports output alarm signal to the alarm device. Please make
sure power supply to the external alarm device.
NO：Normal open alarm output port.
C：Alarm output public end.
Ground.
Connects to analog camera to input video signal.
Receives audio signal output from the devices such as
microphone.
Outputs audio signal to the devices such as the sound box.
High definition audio and video signal output port.
The port outputs the uncompressed high definition video and
multi-channel audio data to the connected display with HDMI
port.
Connects to the external devices such as keyboard, mouse, and
USB storage device.
Connects to Ethernet port.
Connects to the control devices such as speed dome PTZ.
RS485_A port is connected by the cable A and RS485_B is
connected to the cable B.
Inputs DC 12V power.
The Grand Tour 15
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