Power over Ethernet (PoE) system efficiency is impacted across the entire length of the power chain, from power conversion at the output of the PoE power sourcing equipment (PSE), through power delivery to the powered device (PD), and on through conversion back to the various required voltages. To improve PoE system efficiency, power losses must be minimized across the entire length of the power chain, including the power supply, the power sourcing equipment and PDs (including their underlying PoE integrated circuits), and the channel (including cable, patch panel and connectors).
Wireless device proliferation in the enterprise sector has accelerated thanks to key trends including the Bring Your Own Device (BYOD) mobility deployment phenomenon. This, coupled with migration to new gigabit and multi-gigabit Wi-Fi standards such as IEEE 802.11n and IEEE 802.11ac, is increasing the challenges associated with powering a rapidly growing array of WLAN access points with various reach and performance capabilities. The solution is to take advantage of higher power delivery of the IEEE 802.3at Power over Ethernet (PoE) standard where needed, and use midspan technology to enable more flexible WLAN AP positioning while enhancing infrastructure scalability and delivering important networkwide power management capabilities.
There are two ways to deploy the latest high-power PoE technology: by upgrading the network switch, or by installing midspans in the existing networking infrastructure. PoE-capable switches offer the advantage of an integrated solution that requires only one cable for the network connection. However, this isn’t necessarily the best choice.
Sponsored By Microsemi Corporation
IP video is more affordable than ever and is really the best choice for entry into the video surveillance market or when considering a system upgrade.
Many facilities throughout the world have fire alarm, burglar alarm and surveillance systems that were installed before the coming of the Internet Age. For many, there is not the financial ability to replace these systems with more up to date equipment nor may there be pressing need as they properly perform their intended purpose. That does not mean that they can not be 'connected' and ‘IP enabled’ for a very reasonable cost.
Discussion of four options for cooling electronic/electrical equipment housed in enclosures and transit cases. These options include thermoelectric air conditioners, compressor-based AC, vortex coolers and air-to-air heat exchangers. Each cooling method is explained and the advantages of thermoelectric air conditioners are examined as compared to the other cooling methods.
Sponsored By EIC Solutions Inc.
While requirements for security systems are constantly increasing, security managers and IT directors are forced to deal with shrinking budgets.
Before deciding on a card printer, you need to know some basics about types of cards, printing methods, quantity of cards being printed, frequency of printing, security elements, image quality, and encoding requirements.