Aposonic A-S0402R21 - Manual (Page 13)

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3. Installations
The installations described below should be made by qualified service personnel or
system installers.
3.1 Basic Connections
Please refer to the following diagram for the connections.
Please make sure to set the NTSC/PAL Selector Switch on the main board
according to the local TV system for the system to work correctly.
 Cameras
Connect the camera video input connectors to the video outputs from system
cameras or other composite video sources via coaxial cables. The internal 75Ω
termination is always ON.
 Main monitor
Connect the main monitor output connector (BNC) to a surveillance TV monitor,
or connect the VGA output connector to a VGA monitor. The TV/VGA
monitor displays selected live or recorded cameras in any available split window
format.
 Hard disk drive
Make sure to install one SATA hard disk (Max. storage size > 2TB) inside the
DVR. The steps are as below: