Dahua Technology XVR Series, Руководство пользователя

Страница: 64 / 363

User’s Manual
52
4.3.1 Introducing Alarm Port
The alarm input ports are dependent on the model you purchased.
Alarm ports
Table 4-1 Alarm port description
Icon Description
1,2,3,4,5,6,7,8,9,10,11,
12,13,14,15,16
ALARM 1 to ALARM 16. The alarm becomes active in low voltage.
NO1 C1, NO2 C2, NO3
C3, NO4 C4
There are four groups of normal open activation output (on/off button).
NO5 C5 NC5 There is one group of normal open activation output (on/off button).
CTRL 12V
Control power output of the 6th alarm output channel. Voltage current: 500
mA.
When there is an alarm output, close the power output.
When the alarm is cancelled, open the power output.
+12V
Rated current.
Voltage current: 500 mA.
Ground cable.
485 A/B
485 communication port. They are used to control devices such as decoder.
120 Ω should be parallel connected between A, B lines if there are too many
PTZ decoders.
T+, T-, R+, R-
Four-wire full-duplex RS-485 port.
T+ T-: output wire.
R+ R-: input wire.
4.3.2 Alarm Input
Refer to the following figure for more information.

Grounding alarm inputs which includes NO (Normally Open) and NC (Normally Closed) type.

Parallel connect COM end and GND end of the alarm detector (Provide external power to the
alarm detector).

Parallel connect the Ground of the DVR and the ground of the alarm detector.

Connect the NC port of the alarm sensor to the DVR alarm input (ALARM).

Use the same ground with that of DVR if you use external power to the alarm device.