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  • Manual... 
  • High-Density Media Converter System II Gigabit Module Manual
    Manual for LGC5845C-R3, LGC5844C-R3, LGC5846C-R3, LGC5847C-R3, LGC5184C-R3, LGC5108C-R4, and LGC5109C-R4 (Version 1)
 

Black Box Explains...SFP, SFP+, and XFP transceivers.

SFP, SFP+, and XFP are all terms for a type of transceiver that plugs into a special port on a switch or other network device to convert the port to... more/see it nowa copper or fiber interface. These compact transceivers replace the older, bulkier GBIC interface. Although these devices are available in copper, their most common use is to add fiber ports. Fiber options include multimode and single-mode fiber in a variety of wavelengths covering distances of up to 120 kilometers (about 75 miles), as well as WDM fiber, which uses two separate wavelengths to both send and receive data on a single fiber strand.

SFPs support speeds up to 4.25 Gbps and are generally used for Fast Ethernet or Gigabit Ethernet applications. The expanded SFP standard, SFP+, supports speeds of 10 Gbps or higher over fiber. XFP is a separate standard that also supports 10-Gbps speeds. The primary difference between SFP+ and the slightly older XFP standard is that SFP+ moves the chip for clock and data recovery into a line card on the host device. This makes an SFP+ smaller than an XFP, enabling greater port density.

Because all these compact transcievers are hot-swappable, there’s no need to shut down a switch to swap out a module—it’s easy to change interfaces on the fly for upgrades and maintenance.

Another characteristic shared by this group of transcievers is that they’re OSI Layer 1 devices—they’re transparent to data and do not examine or alter data in any way. Although they’re primarily used with Ethernet, they’re also compatible with uncommon or legacy standards such as Fibre Channel, ATM, SONET, or Token Ring.

Formats for SFP, SFP+, and XFP transceivers have been standardized by multisource agreements (MSAs) between manufacturers, so physical dimensions, connectors, and signaling are consistent and interchangeable. Be aware though that some major manufacturers, notably Cisco, sell network devices with slots that lock out transceivers from other vendors. collapse


Product Data Sheets (pdf)...Compact Media Converters

  • Manual... 
  • LGC5300 Series Industrial Gigabit Ethernet Media Converters, with PoE, User Manual
    User Manual for the LGC5300A, LGC5301A, LGC5302A (Version 1)
 
  • Manual... 
  • PCI Fiber Adapters, SC
    Installation and User Guide (Jul-05)
 

Product Data Sheets (pdf)...Pure Networking Media Converters


Black Box Explains...NEBS Level 3.

Network Equipment Building System (NEBS) standards set requirements for telco equipment. The standards are maintained by Telcordia Technologies, Inc., formerly Bellcore. Bellcore Special Report, SR-3580 defines three distinct functional levels... more/see it nowof NEBS compliance. The third of these levels, NEBS Level 3, is the most stringent, certifying carrier-class equipment intended for long-term use in variable environments.

NEBS Level 3 certifies that a piece of equipment can be safely used in an extreme environment. To become certified at NEBS Level 3, a device must meet strict physical, electrical, and environmental requirements to prove it will operate safely and reliably in extreme conditions. It must pass a series of tests that include extreme heat, humidity, fire, earthquakes (Zone 4), light, and noise. collapse


Product Data Sheets (pdf)...Standard Media Converter Switches

  • Manual... 
  • High-Density Media Converter System II, 10-/100-Mbps Ethernet VDSL Extender Module User Manual
    User Manual for LMC5601C-VDSL2 (1)
 

Product Data Sheets (pdf)...PoE PSE Media Converters

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