ADEMCO AHDR1, User Manual

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Single-Channel Digital Video Recorder
9
Technical Overview
Your single-channel DVR can be used as a replacement for a time-lapse VCR 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 single-channel DVR converts analog NTSC or PAL video signals to digital images and
records them on a removable 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 up 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 modem or Ethernet. A
standard PostScript™ computer printer can be connected to the DVR to print frame captures.
There is a USB port that can be used to archive video to external hard disk drives.