LTS Security LTD3216C-PL, User Manual

Page: 42 / 353

Connecting Basics 32
Figure 4-3
Table 4-1
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 normally open activation output (on/off button).
NO5 C5 NC5, There is one group of normally open activation output (on/off button).
Power output
control for alarm
(CTRL 12V)
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.
+12V
Rated power supply.
Electric current: 500mA.
Ground cable.
485 A/B
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.
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.