ARM Electronics JHD - Manual (Page 11)

JPEG2000 Stand alone DVR User Guide
- 11 -
2-2 Sensor and alarm installation
2-2-1 Input & Output
[4Channel]
[8Channel]
[16Channel]
1.[D1~D16 Alarm Input/GND for Location]
16 Sensor inputs, for sensor input installation.
2.[Relay Output NO/NC/COM]
The application of relay output is NO+COM + NC+COM.
2-2-2 Sensor installation
Alarm will be triggered once one (or more than one)
alarm input (D1~D16) causes short circuit or open circuit
with GND.
2-2-3 Relay output installation
Alarm output can be NO or NC, depending on the
settings.
NO-COM: the NO and COM terminals are open-circuit,
and it’ll become closed-circuit when alarm triggered.
NC-COM: the NC and COM terminals are closed-circuit,
and it’ll become open-circuit when alarm triggered.