3
realize the connection between the alarm output port and the load.
3. Please make sure the front-end device has soundly earthed.
Improper grounding may result in chip damage.
1.4.1 Alarm Input and Output Details
You can refer to the following sheet
X
for alarm input and output information. See Figure 1-3.
Figure 1-3
Please refer to the following sheet and Figure 1-3 for detailed information.
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.
1-ON C
，
2- ON C
，
3- ON C
，
4- ON C
，
5- ON C
，
6- ON C
，
7 - ON C
，
8- ON
Eight groups of normal open activation output (on/off button)
G GND
cable.
485 A/B
The A/B cable to control the RS485 devices. It is to connect to
control decoder such as the recorder.
Tx and Rx
RS232 port. Tx is the data output cable and the Rx is the data input
cable.
1.4.2 Alarm Input Port
Please refer to the following sheet for more information.
z
Grounding alarm inputs. Normal open or Normal close type)
z
Please parallel connect COM end and GND end of the alarm detector (Provide external
power to the alarm detector).
z
Please parallel connect the Ground of the NVR and the ground of the alarm detector.
z
Please connect the NC port of the alarm sensor to the NVR alarm input(ALARM)
z
Use the same ground with that of NVR if you use external power to the alarm device.
