Dahua DH-5208AN-4KL-X-8, Руководство пользователя

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The Grand Tour 23
No. Port Name Function
RS485
communication 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.
Four-wire
full-duplex 485 port
(T+, T-, R+, R-)
Four-wire full-duplex 485 port. T+ and T- is the output wire; R+
and R- is the input wire.
Power output
control for alarm
(CTRL 12V)
Controls power output for alarm. The current is 500mA.
Turns off power output when there is alarm output. 
Turns on power output when the alarm is cleared.

12V power output
port
Provides power to external devices such as camera and alarm
device. Please note the power supply shall be below 1A.
Ground.
10 Network port Connects to Ethernet port.
12 VGA port
Outputs analog video data to the connected display with VGA
port.
13 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.
14 RS232 debug COM
The port is used for general COM debug to configure IP address
or transfer transparent COM data.
15 USB port
Connects to the external devices such as keyboard, mouse, and
USB storage device.
16 eSATA port
External SATA port which connects to the device with SATA port.
Perform the jumper configuration when connecting HDD.
Table 3-16
3.2.7 DH-XVR7816S-4KL-X/DH-XVR5832S-X
Figure 3-18
No. Port Name Function
1 GND Ground.
2 Power input port Inputs power.
3 Power button Turns on/off the Device.