QSD2316L DVR User’s Manual
9
Item
Name
Description
15
RS485
Connect to PTZ speed dome cameras
16
FAN
For cooling the device
17
POWER INPUT
DC 12V
Tab 2.2 Definition of Rear Interface
Note: The resolution of VGA output is 800*600/60Hz. If connected through VGA port, please assure your display supports this display mode.
(Most LCD screens can adapt to it automatically without manual adjustment
)
2.3.2 Installing Sensor & Alarm (optional)
The DVR has 16 channel alarm input and 4 channel alarm output.
Alarm Input:
The alarm input is triggered by electric level (High: 5V, Low: 0V). Users can connect external sensors, like gas
detectors, smoke detectors and infrared detectors. Once the DVR detects that the electric level meets the user’s
settings it will trigger the DVR recording or alarm out.
For example, a sensor is connected to alarm input1 as Fig 2.1. Cable A and B will be connected once the sensor
detects an event. Users set Device type as NC (Normal Close), refer to Fig 2.1. It will input +5V (high level) to input1
when triggered, DVR will start recording.
Summary of Contents for QSD2316L
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