8
Refer to the following table and Figure 2-7 for alarm input and output information.
Parameter
Grounding Alarm
Ground line
Alarm Input
1, 2, …, 8. It becomes valid in low voltage.
1 - NO C
2 - NO C
3 - NO C
Three NO (Normally Open) outputs.
Relay Output
1,2,3,4: NO and C (Normally Open and Com)
5: NO, C and NC (Normally Open, Com, Normally Closed)
6: Ctrl 12V (This is used to reset the sensor)
485 A/B
RS-485 communication port. Used to control devices such as PTZ.
Please parallel connect 120
Ω
between A/B cables if there are too
many PTZ decoders.
2.5.2 Alarm Input Port
Please refer to the following for more information.
4/8/16-ch grounding alarm inputs. (Normal open or Normal close type)
Please parallel connect COM end and GND end of the alarm detector (Provide external
power to the alarm detector).
Please parallel connect the Ground of the DVR and the ground of the alarm detector.
Please 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.
Figure 2-7
2.5.3 Alarm Output Port
3 ways relay alarm output (NO contact). Provides external power to external alarm
device.
To avoid overloading, please read relay parameters sheet in the
User
’
s Manual
carefully.
RS-485 A/B are for the positive (A) and negative (B) leads for PTZ control.
Содержание G4-HDE Series
Страница 1: ...G4 HDE Series DVR Quick Start Guide ...