SEPTEMBER 1, 2009--Power over Ethernet (PoE) is now available on all PicSight-GigE cameras and PicSight-Smart models, including versions with lens control. PoE using Gigabit Ethernet applies the technique of phantom power over two of the pairs, allowing the transfer of 48-VDC power mixed with Ethernet signals. Power and data can reliably be separated and provide no loss of bandwidth. It is possible to install a camera with a single standard Cat5e cable. PoE is useful for applications handling multiple cameras or where external power is inconvenient. Power over Gigabit Ethernet is compatible with GigE Vision because it does not affect the content of transmitted data.
-- Posted by Carrie Meadows, Vision Systems Design, www.vision-systems.com
For related information, visit the Gigabit Ethernet topic center.
Power-over- Gigabit Ethernet, Good becomes Better
Gigabit Ethernet is now an established camera interfacing technology in machine vision. Its cost, deployment ease, long cable capability as well as support for multiple devices made it a better choice in most applications over other competing technologies. Leutron Vision is proud to bring the benefit of this technology a step further by adding Power-Over- Gigabit Ethernet.
Power-Over-Ethernet (PoE) is not new. Based on slower version of the Ethernet protocol, it used the spare wire pair to provide power. Gigabit Ethernet, on the other hand, already makes use of all the wire pairs of the standard cable, and so providing power is more challenging. The IEEE 802.3af standard determines how power is delivered on Gigabit Ethernet. It applies the technique of phantom power over two of the pairs. This allows the transfer of 48VDC power mixed with Ethernet signals. Power and data can reliably be separated and provide no loss of bandwidth. So, it is now possible to install a camera with a single standard Cat5e cable. PoE is a key benefit for applications handling multiple cameras or where external power is inconvenient.
Practically, power needs to be injected on the network. It is usually done with standard network powered-switches. The installation is even simpler than regular equipments. Furthermore, Power-Over Gigabit Ethernet is compatible with GigE Vision as it doesn't affect the content of what is transmitted.
Leutron Vision is releasing the Power-Over-Ethernet option on all its PicSight-GigE cameras and PicSight-Smart, including Lens-control versions.
Leutron Vision has been a pioneer in manufacturing Gigabit Ethernet cameras and actively participates in technology standardization and further development within industry committee chairs by AIA and EMVA. Pioneers in Image Acquisition, Leutron Vision has been designing and manufacturing machine vision hardware for OEMs world wide for 30 years.