ALARMS | CHAPTER 8 |
Many QT Series DVRs feature connections for external alarms – both input and output. Please consult Chapter 2 Connections and Controls to determine whether your model includes this feature and where the connection block is located. The alarm connector block shown in Picture
When an event is detected the system can notify local users or send notification to a monitoring service. At the same time, the system can accept signals from motion detectors, smoke detectors or other alarms and begin recording based on that input and your settings.
You will need to have the manual for your alarm(s) handy to ensure the proper settings within the DVR.
ALARM IN
The accompanying diagram (Picture
•Normal open or Normal close 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 combo DVR and the ground of the alarm detector.
•Connect the NC port of the alarm sensor to the combo DVR alarm input(ALARM)
•Use the same ground with that of combo DVR if you use external power to the alarm device.
Alarm input public end should jump out with device power end. Alarm Device Connection Terminal
+12V GND COM PC
8.1 ALARM INPUT
When attaching alarms, the following criteria must be met:
1.The alarm input must be grounded.
2.A grounding signal is required for the alarm input
3.When connecting the DVR to another device - including another DVR - through the alarm input, a relay should be used to separate them.
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NO | C |
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| NO |
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1 | 2 | 3 | 4 |
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Alarm Device
Connection Terminal
ALARM
GND
+12V GND
PICTURE 8-2
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Parameter | Grounding Alarm | |||||
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| Ground line |
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Alarm Input | 1, 2, …, 8 becomes valid in low voltage. | |||||
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Two NO activation outputs. | ||||||
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CTRL 12V | Controls the power output | |||||
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| You need to close the device power to |
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| cancel the alarm. |
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76 | 77 |