Aposonic A-S1604R20A - Manual (Page 15)

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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 back panel
according to the local TV system for the digital video/audio recorder 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.
 Main monitor
Connect the main monitor output connector (BNC/VGA or optional
S-video/HDMI) to a surveillance TV/VGA monitor. The TV/VGA monitor
displays selected live or recorded cameras in any available split window format.
 Hard disk drive(s) / DVD Writer
Make sure to install at least one SATA hard disk drive (Max. storage size >
2TB/HDD) inside the DVR. The steps are as below:
1. Power off the machine, and then use a screwdriver to uncover it.
2. Use a screwdriver to fix the SATA HDDs (and internal DVD writer), and
connect the cables as shown.