Categories (x) > Networking > Media Converters (x)

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  • Quick Start Guide... 
  • LinkGain Ethernet Extender over Coax Quick Start Guide
    Quick Start Guide for the LBNC300A and LBNC300AE (Version 2)
  • Manual... 
  • PoE PSE Media Converter, 10BASE-T/100BASE-TX to 100BASE-FX
    Installation and User Guide (Jun-06)
  • Manual... 
  • 100 Mbps Compact Media Converter
    Installation and User Guide (Dec-06)

Product Data Sheets (pdf)...Multi-Power Miniature Media Converters

Black Box Explains…Fiber Ethernet adapters vs. media converters.

When running fiber to the desktop, you have two choices for making the connection from the fiber to a PC: a fiber Ethernet adapter or a media converter like our... more/see it nowMicro Mini Media Converter.

Fiber Ethernet adapters:

  • Less expensive.
  • Create no desktop clutter, but the PC must be opened.
  • Powered from the PC—require no separate power provision.
  • Require an open PCI or PCI-E slot in the PC.
  • Can create driver issues that must be resolved.
  • May be required in high-security installations that require a 100% fiber link to the desktop.

  • Media converters:
  • More expensive.
  • No need to open the PC but can create a cluttered look.
  • Powered from an AC outlet or a PC’s USB port.
  • Don’t require an open slot in the PC.
  • Plug-and-play installation—totally transparent to data, so there are no driver problems; install in seconds.
  • The short copper link from media converter to PC may be a security vulnerability.
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    Product Data Sheets (pdf)...Hardened Mini Industrial Media Converters

    • Manual... 
    • FlexPoint T1/E1 to Fiber Line Driver
      Installation and User Guide (Dec-04)
    • Manual... 
    • High-Density Media Converter System II Chassis User Manual
      User Manual for LMC5207A-R3, LMC5208A-R3, LMC5227A-R2, LMC5228A, LM5203A, LMC5204A, LMC5205A, LMC5206A, LM5233A, LM5234A, LM5235A, LM5236A, and LMC5227A (Version 2)
    • Manual... 
    • Miniature Media Converter Power Tray with AC Power Manual
      Manual for LHC018A-AC-R2 (Version 1)

    Black Box Explains...Link loss.

    Media converters solve the problem of connecting different media types in mixed-media networks. In order to comply with IEEE standards, they implement IEEE data-encoding rules and the Link Integrity Test.

    For... more/see it nowa twisted-pair segment, a link is a signal sent by the converters when the cable is in use. If no Link Integrity Test signal is received, the connected device assumes that the link is lost.

    With fiber cable, a connected device checks a line by monitoring the Link Integrity Test signal from the converter and the power of the light being received. If the light’s power drops below a certain threshold, the link is lost. In either case, link loss usually results from a broken cable, which is the cause of approximately 70% of all LAN problems.

    Link loss is often indicated by an LED on a connected network device. You can also monitor a link with network-management software, such as SNMP, which sends a TRAP (alert) to the management workstation when the link is lost.

    Media converters actually function as two separate Multistation Access Units (MAUs). For example, one monitor is a twisted-pair segment and one monitor is a fiber segment. If a fiber cable is broken and the link is lost, a network manager on the twisted-pair end won’t know there’s a problem until users on the fiber side report it.

    To solve this problem, Black Box® Modular Media Converters feature a unique Link-Loss capability. This enables the link status on one segment to reflect the link status of the other segment. So if the link is lost on the fiber side, the link is disabled on the UTP segment as well. And the converters will send an SNMP TRAP indicating the loss of link to the management workstation. collapse

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