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Introduction
20
Technical Overview
In addition to replacing both a time-lapse VCR and a multiplexer in a security
installation, your DVR has many features that make it much more powerful and easier
to use than even the most advanced VCR.
The DVR converts analog NTSC or PAL video to digital images and records them on a
hard disk drive. Using a hard disk drive allows you to access recorded video almost
instantaneously; there is no need to rewind tape. The technology also allows you to
view recorded video while the DVR continues recording video.
Digitally recorded video has several advantages over analog video recorded on tape.
There is no need to adjust tracking. You can freeze frames, fast forward, fast reverse,
slow forward and slow reverse without image streaking or tearing. Digital video can be
indexed by time or events, and you can instantly view video after selecting the time or
event.
Your DVR can be set up for event or time-lapse recording. You can define times to
record, and the schedule can change for different days of the week and user-defined
holidays.
The DVR can be set up to alert you when the hard disk drive is full, or it can be set to
record over the oldest video once the disk is full.
Your DVR uses a proprietary encryption scheme making it nearly impossible to alter
video.
You can view video and control your DVR remotely by connecting via Ethernet. There
are two USB ports that can be used to upgrade the system or copy video clips to
external hard disk, CD-RW, and flash drives.
Note This manual covers the 8- and 16-channel digital video
recorders. The DVRs are identical except for the number of
cameras and alarms that can be connected and the number of
cameras that can be displayed. For simplicity, the illustrations
and descriptions in this manual refer to the 16-camera model.