Table of Contents
Advertisement
4.3.1 Introducing Alarm Port
The alarm input ports are dependent on the model you purchased.
Icon
1，2，3，4，5，6，
7， 8， 9， 10， 11， 12，
13，14，15，16
NO1 C1, NO2 C2,
NO3 C3, NO4 C4
NO5 C5 NC5,
Power output control
for
alarm
(CTRL
12V)
+12V
485 A/B
T+,T-,R+,R-
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.
⚫
Description
ALARM 1 to ALARM 16. The alarm becomes active in low voltage.
There are four groups of normally open activation output (on/off button).
There is one group of normally open activation output (on/off button).
Controls the 6
th
channel power output for alarm. Electric current: 500mA.
When there is an alarm output, close the power output.
⚫
When the alarm is cancelled, open the power output.
⚫
Rated power supply.
Electric current: 500mA.
Ground cable.
485 communication port. They are used to control devices such as
decoder. 120Ω should be parallel connected between A, B lines if there
are too many PTZ decoders.
Four-wire full-duplex RS-485 port.
T+ T-: output wire.
R+ R-: input wire.
Figure 4-2
Table 4-1
Advertisement
Table of Contents
