DFind in this section our catalog DVR: from 8-32 channels, or Hybrid DVR with large recording capacity.
If you have or want to install your closed television system in your home or business, it is always important to have a DVR’s system so that your system is working perfectly.
A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device.
DVRs can be classified basically by:
Number of channels or number of cameras that can be connected to the equipment.
Commonly, the most widely manufactured models are for 4, 8, 16, 32 channels and some brands manufacture models with 9, 24, 48 channels.
The type of technology you use for the different video formats: analog, HDCVI, HDTVI, AHD
HDCVI: High Definition Video Composite Interface developed by DAHUA.
HDTVI: open standard high definition video transport interface developed in Silicon Valley, adopted by HIKVISION under the name TURBO HD.
AHD: analog high definition.
The most used physical medium for transmission of the analog video signal between the camera and the DVR’s is the coaxial cable; However, the use of twisted pair cable (UTP), plus the implementation of video-balun’s is increasingly common due to the lower cost that this type of cable represents compared to coaxial.
In general, closed circuit television systems are basically composed of:
- Transmission medium,
- Power supply,
- Video and recording management system,
- Display medium and,
- And of course, who operates or consults it, that is, the human factor.
It is important to remember that there are two types of CCTV systems: analog and IP-based.
The former use continuous electrical type signals that are transported in a physical or wireless medium between the camera and the recording system, while network or IP video systems use digital type signals also transmitted by physical or wireless means.
wireless, but under the TCP / IP protocol in Ethernet-type networks.
Video and recording signal management systems are commonly referred to as DVR (Digital Video Recorder) for analog video systems.
For projects or small applications, the same DVR’s with software that most manufacturers provide together with the equipment fulfills the functions of video management and recording.
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