...polycarbonate, and solid metal. • Because ventilation is important, choose perforated or mesh doors for air movement. If, however, you’re using an enclosure blower or other ventilation scheme that moves air from the bottom to the top of the cab...

...you should always use solid core cable, and shielded cable if recommended in the product specifications. You can find more information about these recommendations in our Black Box Explains Video over Cat5 Cable. • Ideal for use • These products ar...

...blower requires a solid or partially vented front door with adequate space — usually at least 4 inches — between the front of your equipment and the cabinet door for air movement. • Keep in mind • When using fans to cool a cabinet, keep in min...

...The backboard can be solid or a grid design. Parabolic grid designs are excellent • for outdoor use since the wind blows right through them. The concave nature of this dish design focuses energy into a narrow beam that can travel long distances, ...

Wireless Network • In ad-hoc mode, wireless user devices such as laptop computers and PDAs communicate directly with each other in a peer-to-peer manner without the benefit of access points. • Ad-hoc mode is generally used to form very small s...

...new revenues from old cables). Here's how it works. Nearly all existing telephone lines can carry • frequencies up to 1 MHz. But analog telephone service only requires a maximum frequency of 3.3 KHz, leaving a large amount of the bandwidth unused....

Ethernet Topology • Technology Overviews • Ethernet Topologies • Designing your Ethernet LAN with Black Box. • Key features of Ethernet topologies: • Fast, reliable throughput speed-10 Mbps. • Accurate transmission-CSMA/CD access method. • Eas...

Fast Ethernet • Technology Overviews • Fast Ethernet • What are my choices for high-speed networking? • Black Box compares today's popular high-speed networking options. • Switched Ethernet • Switched Ethernet relies on centralised multiport s...

Fiber • Technology Overviews • Fibre • Guidelines for choosing and testing fibre optic cable. • Fibre optic cable has become more affordable. It's now used for many applications that require complete immunity to electrical interference. Fibre ...