Dahua 8-HDD Series, Quick Start Manual

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The Grand Tour 3
No. Name Description
2
AI module
indicator light
Displays AI module status.
The yellow light flashes: AI module is running properly.

The yellow light is on: AI module is malfunctioning.

This function is valid if there is AI module.
3 RESET button Reserved.
4 HDMI port
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.
The three HDMI ports are different source output.
5 VGA port
VGA video output port. Output analog video signal. It can connect
to the monitor to view analog video. The VGA port and HDMI 1 port
are same source output.
6 RS-232 port
RS-232 COM debug. It is for general COM debug, set IP address,
transmit transparent COM data.
7
AUDIO IN Audio input port
AUDIO OUT Audio output port
8 eSATA port SATA peripheral port. Connect to SATA port or eSATA device.
9 USB port
Connects to external devices such as USB storage device,
keyboard and mouse.
10 SAS port SAS extension port. It can connect to the SAS extension controller.
11 Network port
10M/100/1000Mbps self-adaptive Ethernet port. Connect to the
network cable.
12
Alarm input
16 groups (1
–16) alarm input ports, they are corresponding to
ALARM 1
–ALARM 16. The alarm becomes valid in low level.
A and B: Control the A/B cable of the RS-485 device. It is to 
connect to the PTZ camera. Connect in
parallel 120Ω between
A/B cables if there are too many PTZ decoders.
: GND end.

Alarm output
8 groups of alarm output ports (NO1 C1
–NO8 C8). Output alarm
signal to the alarm device. Make sure there is power to the external
alarm device.
NO: Alarm output port of Normally Open type.

C: Common alarm output port. 
: GND end. 