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Product Data Sheets (pdf)...10/100 Secure Device Servers, RS-232/422/485 and 10/100/1000 Secure Device Servers, RS-232/422/485


Black Box Explains...DIN rail usage.

DIN rail is an industry-standard metal rail, usually installed inside an electrical enclosure, which serves as a mount for small electrical devices specially designed for use with DIN rails. These... more/see it nowdevices snap right onto the rails, sometimes requiring a set screw, and are then wired together.

Many different devices are available for mounting on DIN rails: terminal blocks, interface converters, media converter switches, repeaters, surge protectors, PLCs, fuses, or power supplies, just to name a few.

DIN rails are a space-saving way to accommodate components. And because DIN rail devices are so easy to install, replace, maintain, and inspect, this is an exceptionally convenient system that has become very popular in recent years.

A standard DIN rail is 35 mm wide with raised-lip edges, its dimensions outlined by the Deutsche Institut für Normung, a German standardization body. Rails are generally available in aluminum or steel and may be cut for installation. Depending on the requirements of the mounted components, the rail may need to be grounded. collapse

  • Manual... 
  • LGC5300 Series Industrial Gigabit Ethernet Media Converters, with PoE, User Manual
    User Manual for the LGC5300A, LGC5301A, LGC5302A (Version 1)
 
  • Manual... 
  • PoE PSE Switch Manual
    Manual for LPH240A-H and LPH240A-P (Version 1)
 
  • Quick Start Guide... 
  • LGH1000 Series Hardened Ethernet Switch QSG
    Quick Start Guide for the LGH1004A (Version 1)
 

Product Data Sheets (pdf)...Cables for Cisco Routers

  • Manual... 
  • Unmanaged 802.3af PoE Gigabit Ethernet Switch, 5-Port User Manual
    User Manual for Unmanaged 802.3af PoE Gigabit Ethernet Switch, 5-Port (1)
 

Product Data Sheets (pdf)...Heavy-Duty Edge Switches

  • Manual... 
  • Pure Networking II 10/100 Ethernet Switch User Manual
    User Manual for the LB005A and LB008A (Version 1)
 

Black Box Explains...MIMO wireless.

Multiple-Input/Multiple-Output (MIMO) is a part of the new IEEE 802.11n wireless standard. It’s a technique that uses multiple signals to increase the speed, reliability, and coverage of wireless networks. It... more/see it nowtransmits multiple datastreams simultaneously, increasing wireless capacity to up to 100 or even 250 Mbps.

This wireless transmission method takes advantage of a radio transmission characteristic called multipath, which means that radio waves bouncing off surfaces such as walls and ceilings will arrive at the antenna at fractionally different times. This characteristic has long been considered to be a nuisance that impairs wireless transmission, but MIMO technology actually exploits it to enhance wireless performance.

MIMO sends a high-speed data stream across multiple antennas by breaking it into several lower-speed streams and sending them simultaneously. Each signal travels multiple routes for redundancy.

To pick up these multipath signals, MIMO uses multiple antennas and compares signals many times a second to select the best one. A MIMO receiver makes sense of these signals by using a mathematical algorithm to reconstruct the signals. Because it has multiple signals to choose from, MIMO achieves higher speeds at greater ranges than conventional wireless hardware does. collapse

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