Dahua HCVR8204A-S3 - Page 37

27
SN
Icon
Name
Note
6
1～16
Alarm input port 1～16
 There are four groups. The first group
is from port 1 to port 4, the second
group is from port 5 to port 8, the third
group is from port9 to port 12, the
fourth group is from port13 to port 16.
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 DVR have
the same ground.
NO1～NO5
Alarm output port 1～5
 5 groups of alarm output ports.
(Group 1 ： port NO1 ～ C1,Group
2:port NO2～C2,Group 3:port NO3～
C3. 4:port NO4～C4. 5:port NO5～
C5.).Output alarm signal to the alarm
device. Please make sure there is
power to the external alarm device.
 NO：Normal open alarm output port.
 NC：Normal close alarm output port.
 C：Alarm output public end.
C1～C5
NC5
A
RS485 communication
port
RS485_A port. It is the cable A. You can
connect to the control devices such as
speed dome PTZ.
B
RS485_B.It is the cable B. You can
connect to the control devices such as
speed dome PTZ.
T+、T-、R+、R-
Four-cable full-duplex
485 port.
T+, T-: Send out cable.
R+, R-: Input cable.
CTRL 12V
Control power output
Control power output of the 6
th
alarm
output channel.
 When there is an alarm output, close
the power output.
 When the alarm is cancelled, open
the power output.
GND
Ground
7
eSATA
eSATA port
External SATA port. It can connect to the
device of the SATA port.
8
USB port
USB port. Connect to mouse, USB
storage device, USB burner and etc.