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CCTV

Ethernet devices

Dahua Technology has launched a system of extended Power over Ethernet (ePoE) devices including cameras, network switches and network recorders.

The ePoE IP system supports up to 800m between the ePoE camera and the ePoE network switch or ePoE network video recorder (NVR) with embedded switch. According to the makers, it overcomes the limitation of traditional Ethernet and POE (both restrict cable distances to 100m (328 feet) between network ports) and cuts out the need for Ethernet extension devices or other network switches.

Dahua says that it provides the complete solution for ePoE IP System including IP cameras, NVRs and network switches. The products offer extended PoE transmission; and automatic set up, suitable according to the manufacturer for migration from analogue to IP.

The ePoE series IP cameras will be released in July 2017. They cover resolutions from 1080P to 4K, and come in box, bullet, dome and eyeball models and with vari-focal and fixed lens types. As a sub-category of Eco-savvy 3.0 series, they have all the software features of Eco-savvy 3.0 series products, such as Smart Video Detection (Tripwire, Intrusion, Abandoned/Missing detection), Face Detection and Smart H.265+ encoding.

Network recorders

The ePoE series network recorders will be released in September. They have eight green ePoE ports that support PoE transmission (300m@100Mbps/800m@10Mbps/EOC) when connecting to ePoE cameras. There are three models with two, four or eight SATA ports respectively for different storage capacities. The H.265 chipset supports 4K and H.265 decoding at a performance up to 16channels at 1080P or four channels at 4K for live view or play-back. As a sub-category of Pro series NVR, it keeps all the software features of NVR5000-4KS2 series products, such as Smart Video Detection, Face Detection, Smart H.265+ decoding, and automatic number plate recognition. It can work with standard Ethernet or PoE cameras and switches, for migration of a CCTV system to IP.

Network switch

The ePoE network switch PFL2106-4ET-96 was released in November. It has four ePoE ports that support PoE transmission (300m@100Mbps, 800m@10Mbps, EoC) when connected with ePoE cameras. It supports plug and play and no configuration required, according to the firm. Also, the network switch series has an industrial grade design offering a wide operation temperature range (minus 30 degrees C to 65 degrees C) and high level lightning protection, which save on cost by eliminating the need for an equipment room, the makers say. The swithces are also compatible with the non-ePoE IP cameras (100m@100Mbps).

Applications

For warehouses, parks, garden and outdoor parking, camera locations may be dispersed; a conventional approach is to add repeater devices to extend the transmission distance. However, this adds to cost of equipment and installation. A power supply and junction box will be required to install the repeater. It also makes it harder to maintain and raises the risk of product failure. Or, a fibre optic transceiver can add distance to transmission. However, fibre optic cable has to be installed and it requires a power supply at the camera side to power the fibre optic transceiver as well as the camera. Dahua says that its ePoE IP system supports up to 800m via the traditional Cat5 ethernet cable. It simplifies the network construction as only one cable is required to connect from the front-end to the back-end devices, which results in higher reliability and lower installation and maintenance costs, the company says.

For migration of an analogue surveillance system to IP, reusing existing coaxial cable can reduce the installation cost. You have to adapt the IP video signal and RJ45 connection to coaxial cable, support the length of coaxial cable as it is, and transmit power over coaxial cable. The ePoE IP system addresses all of them for reuse of coaxial cable to run IP video. The Power over Coaxial Extender LR1002, pictured, connects to the Ethernet port of IP camera or network switch on one end and connects to BNC connector of coaxial cable on the other. Dahua adds that its ePoE IP system supports transmission up to 1000m over RG59 coaxial cable at 10Mbit/s bandwidth, and delivers PoE power to the IP camera.


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