Multichannel Digital Video Recorders
New digital video recorders can be supplied from the HDD capacity from 250 GB to 8000 and equipped with a DVD-drive. They can record video in H.264 at up to 200 / 400 / s and a resolution of 704×576 to (4CIF) pixels. 5 modes, support for the remote administration and management via Ethernet PTZ-cameras. In addition, the new recorders are 3 USB-ports, 2 audio and alarm interfaces for connecting safety sensors and actuators. For the organization large-scale video surveillance systems can be combined up to 100 digital models of a new series within a single network. Thanks to this video recorders should be used in the video shopping centers, underground railroad stations and other facilities if you need to create a large analog video system with the ability to connect to it IP-based cameras.
To configure and manage the network DVRs DX4700/4800 integrated into a proprietary system Pelco Digital Sentry, which provides ample opportunity to configure the equipment, management, monitoring, recording / video search, etc. from a single location. DX4700/4800 lineup includes a 4 hybrid DVR, two of which (DX4716 and DX4816) can take video with 16 analog and 2 network cameras, and DX4708 DX4808 and 8 and 2, respectively. Regardless of the model, the digital video compression algorithm supports H.264, the resolution Recording CIF (352×288 pix.), 2CIF (704h288 pix.) and 4 CIF (704×576 pix.). The maximum recording speed for models DX4708 DX4716 and at different resolutions is to 200/100/50 / s 400/200/96 c / s, and the DX4808 and DX4816 – 200 and 400 k / s, regardless of the selected resolution. Recording video from surveillance cameras in DX4700/4800 carried out on the built-in hard drives such as SATA, capacity of which can be 250, 500, 1000, 2000, 4000, 6000 or 8000 GB, and selected based on the requirements of the CCTV system. In particular, the needed capacity is determined by the archive requirements for image quality recording modes used and the time store video archives.
If necessary, digital video recorders allow you to select modes such as continuous recording, scheduled recording, and motion is detected, the signal from the alarm input and other events. In addition, new digital models are equipped with DVD-drive for recording video clips to CD / DVD-discs, and can record information on external storage devices, connected via USB-port. For remote control of PTZ-PTZ functions, such well known brands like Axis, Bosch, JVC, Smartec and others, DVRs are equipped with ports RS-232/485. DX4700/4800 supports a long list of protocols, telemetry, including Pelco C / D / P, Coaxitron, Bosch Autodome, Ganz DSCP, Ganz P360V1, Kalatel Cyberdome, LG Multix, LG SD168, Panasonic CS850 and Samsung SCC. At the same pan, tilt PTZ-camera and zoom control of digital video recorders allow you to perform with a special keyboard or joystick jog-shuttle, located on their front panel. To effectively use in security systems new Pelco DVRs have inputs and alarm outputs for external alarm sensors and control actuators. So DX4708 DVR is 8 / 2 I / O Alarm, DX4716 – 16 / 2, DX4808 – 8 / 4, and DX4816 – 16 / 4. To eliminate false alarms can be programmed algorithms reactions that DVRs will activate in the event of an alarm event.