IC Realtime Specialty: 4-CH Mobile DVR - Manual (Page 30)

30
Figure 3-9
Please refer to the following sheet for detail information.
SN Function
1 GND
2 Microphone
3 GND
4 Earphone
5 Power control
6 A cable
7 GND
8 B cable
3.7.2 Alarm Input Port
Please refer to the following sheet for more information. See Figure 3-10.
z
4/8/16-ch 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 DVR and the ground of the alarm detector.
z Please connect the NC port of the alarm sensor to the DVR alarm input(ALARM)
z Use the same ground with that of DVR if you use external power to the alarm device.
Figure 3-10