LT Security LTD2308 - Manual (Page 16)

Digital Video Recorder User Manual
10
Item Name Description
3 AUDIO IN 8-channel Video input
4 S-VIDEO S-Video output, connect to monitor
5 PS/2 port Connect to PS/2 mouse
5 AUDIO OUT Audio output, connect to the sound box
6 USB MOUSE port Only for USB mouse
7 RJ45 port Connected to internet
8 VGA port VGA output, connect to monitor
9 ALARM IN Connect to external sensor 1-8. Please refer to 2.3.2 Install Sensor &Alarm
10 ALARM OUT Relay output 1-4. Connect to external alarm. Please refer to 2.3.2 Install Sensor &Alarm
11 POWER INPUT DC 12V
12 COM port For debug
13 AUDIO OUT Audio output, connect to the sound box
14 VIDEO IN Connect camera
Tab 2.3 Definition of Rear Interface
Notice: The resolution of VGA output is 800*600/60Hz. If connected through VGA port, please assure your display supports the display
mode.(For most of LCD screens, they can adapt to it automatically without adjustment manually)
2.3.2 Install Sensor &Alarm
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 detector,
smoke detector and infrared detector. Once the DVR detects that the electric level meets the setting users make, it will
trigger DVR to record or alarm out.
For example, a sensor is connected to alarm input1. If the sensor gives relay out(switch on/off), user need set the sensor
according to the switch status at alarm. If the switch is open at alarm, users need set SENSOR TYPE as NC(Normal
Close),. Cable A and B will be disconnected once the sensor detect event. It will detect +5V (high level) to sensor1 when
events happen. DVR is triggered. it will record and output alarm.