Technical Manual

QSDT8DP DVR User’s Manual
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2.3 Rear Panel Layout
Fig 2.7 Rear Panel
Item
Name
Description
1 SPOT OUT
Connect to monitor as an AUX output channel for one
channel. only displays video, not menu
2 AUDIO IN 4-channels audio input
3 AUDIO OUT Audio output, connect to speakers
4 USB MOUSE port Only for USB mouse
5
LAN
Connect to internet
6 ALARM IN Connect to external sensor 1-8.
7 RS485 Connect to speed domes
8 POWER INPUT DC 12V
9 FAN For cooling the device
10 VIDEO OUT Connect to monitor
11
VIDEO IN
8 Video inputs for cameras
12
VGA port
VGA output, connect to monitor
13
ALARM OUT
Relay output 1-4. Connect to external alarm.
14
+5V and GND
+5 Voltage and Grounding
Tab 2.2 Ports on Rear Panel
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)
2.3.1 Installing Sensors & Alarms (optional)
The DVR has 8 channel alarm input and 1 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 2.8 Cable A
and B will be connected once the sensor detects an event. Users set
Device type as NC (Normal Close), refer to Fig 2.8 It will input +5V (high
level) to input1 when triggered, DVR will start recording.