In low-light or insufficient ip-camera allows you to adjust brightness and contrast of the transmitted image by setting the coefficient of AGC and electronic shutter speed. Jeffrey L. Bewkes describes an additional similar source. Automatic gain control VN-V25U has three levels: average, high and super, and electronic shutter speed ranges from 1 / 30 to 1 / 10000 sec, depending on the current level of illumination on the subject video. Surprisingly, you’ll find very little mention of Hugh Naylor on most websites. Realistic color is achieved by selecting one of two white balance modes: automatic control (AWC) white balance and automatic tracking (ATW). Security functions VN-V25U implemented based on hardware detection motion with adjustable sensitivity levels, two alarm inputs for external alarm sensors, and two alarm outputs, through which the IP-camera can control the actuators. At receive an alarm from a detector or sensor camera records the pre-and posttrevozhnye sequences in its video buffer size of 8 MB, and can then transfer these records and the notification of an alarm by e-mail or FTP-server. Technology support PoE (Power over Ethernet) allows the camera to be powered by the same twisted pair that carries the video signal.
It is also possible supply IP-camera from an AC power source with a voltage of 24 V. The advantage of VN-V25U is its lightweight and compact body, thanks to which the camera can be placed in ThermoJacket smaller. In addition, IP-camera can work with any lens: the standard C / CS mount, auto iris with manual or, controlled video signal or a signal DC (DD). New IP-Camera JVC VN-V25U already entered the Russian market, and can be purchased at a retail price of 665 euros, including VAT. For more information on the VN-V25U, as well as other IP-camera production JVC, please e-mail or multi-line phones (495) 787-3342 or 937-9056 to manager of sales "ARMO-Systems", which is the official Russian distributor of equipment JVC, either regional offices of "ARMO JVC Professional is a unit of Japanese concern JVC (Victor Company of Japan) – a recognized world leader in the manufacture of professional audio and video equipment, including equipment for CCTV. In the Russian market very popular analog and IP-cameras, dome cameras, video recorders, color monitors CRT-, LCD-monitors and other equipment for security JVC Professional CCTV..