Vonnic Standalone DVR Manual do Utilizador descarregar pdf (Página 7)

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Digital Video Recorders

A digital video recorder (DVR) is the central component in any CCTV system. It is necessary to

record the video from any camera. There are two main types, standalone DVRs and PC based

DVRs. Standalone DVRs have been the most widely used but PC based DVRs are becoming

increasingly more popular with their upgrade flexibility and decreasing costs.

Standalone DVRs

Standalone DVRs are machines are based on Linux, Unix or other proprietary operating sys-

tem. Designed for a single application, they are simple to use and offer many features. They

are commonly available in 4 channel, 8 channel and 16 channel and typically include a central

management software (CMS) for remote viewing, PTZ control, live and recording playback op-

tions and motion detection. All Vonnic brand DVRs include remote software though some other

entry level DVRs may not.

PC Based DVRs

A PC based DVR is a windows based computer that includes a 4,8,12,16 or 32 channel DVR

card. Most DVR cards feature CMS software that offers significantly more options and customi-

zations than the Standalone DVRs. Initial setup of a PC based DVR is more expensive, but you

do have increased flexibility when adding cameras and storage.

PC Based DVR Benefits:

High Resolution Recordings (720x480)

Upgrade flexibility

Feature rich, user friendly interface

Storage capacity

Easy network integration

Limitations:

Windows based OS increases vulnerability to virus

attacks and software crashes.

Users must have some basic computer knowledge

Standalone DVR Benefits:

High Resolution Recordings (720x480)

Feature rich, user friendly interface

Very stable and low maintenance

Easy network integration

Low cost

Limitations:

Proprietary OS decreases flexibility with

upgrades and storage capacity.

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