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Introduction
4, 9, or 16 cameras
Audio input
Audio output
Technical Overview
Your DVR can replace both a time-lapse VCR and a multiplexer in a security
installation. However, it 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 risk or 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.
Rev 1.00
Figure 1-1
Typical DVR Installation
Video out
Digital Video Recorder
Internal CD-RW
USB backup
device
2
Monitor
(NTSC or PAL)
Spot out
Sensor 4, 9, or 16 Alarm I/P
Siren
Alarm
output
x4
Flashing
light
External SCSI
Hard Disk Drive
Document 900.0258
09/04
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