Gigabit Ethernet

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Gigabit Ethernet

An Ethernet standard that transmits at 1 gigabit per second. Gigabit Ethernet (GbE, GE) connects PCs and servers in local networks and is commonly employed along with a mix of 10/100 Mbps devices. For example, a 10/100/1000 switch supports all three rates and adjusts to the highest speed between sender and receiver. All new computers and most network devices support Gigabit Ethernet.

GbE transmits full duplex from point to point using Ethernet switches and half duplex in a shared Ethernet hub environment (see CSMA/CD).

IEEE 1000Base-T (802.3ab)
The 1997 standard (IEEE 802.3z) required multimode fiber or shielded copper cables, but two years later, 1000Base-T enabled GbE to run on ordinary Cat 5 copper and be readily used in existing networks. Four wire pairs each transmit 250 Mbps in both directions.

TIA 1000Base-TX
A competing standard created by the TIA that never caught on used simpler electronics but required Cat 6 cabling. However, 1000Base-T is often erroneously labeled 1000Base-TX. See Ethernet and 10 Gigabit Ethernet.

COPPER CABLEEncoding   Cable  RangeStandard     Method     Type  (meters)1000Base-T802.3ab      4D-PAM5  Cat5-UTP  100

   1000Base-TXTIA/EIA-854  4D-PAM5  Cat6-UTP  100

   1000Base-CX802.3z       8B/10B   Cat1-STP   25


   OPTICAL CABLE (8B/10B Encoding)Fiber            ModalDiameter       Bandwidth   Range(microns)      (MHz-km)   (meters)1000Base-SX 802.3z
   62.5 multimode   160        220
   62.5 multimode   200        275
   50 multimode     400        500
   50 multimode     500        550

   1000Base-LX802.3z
   62.5 multimode   500        550
   50 multimode     400        500
   50 multimode     500        550
    9 singlemode    ---       5000
References in periodicals archive ?
"As one of the GigE service leaders, Telseon is showing that speed and simplicity of deployment are possible in the metro optical network.
The Sweep+ SW-4000Q-10GE is equipped with four prism-mounted CMOS sensors and a 10 GigE interface that supports backwards compatibility to 5Gb/s, 2.5Gb/s, and 1Gb/s Ethernet standards.
To be able to operate both Dual GigE and USB3 equally, the housings of the existing camera families have been aligned - the housings have a uniform front panel cross-section of 49.8 x 49.8mm and are almost identical in depth: 53.8mm for USB3 or 55.3mm for Dual GigE.
The Camera Link interface offers a choice of 12,10 or 8-bit output; models with GigE Vision digital interfaces will also become available.
Perhaps that explains the buzz in the machine vision world over new application configurations that leverage the economy and agility of standard Gigabit Ethernet (GigE).
In addition, the profilers feature a GigE Vision interface, support the GenlCam standard, and are easy to interface with other off-the-shelf software.
360networks said it deployed its GigE Point-to-Point Private Line Transport service for SDN, providing high capacity data transport for its high bandwidth needs.
The control and signal processing AMC provides a dual-core e600 8641D PowerPC processor at up to 1.3 GHz with up to 2 GB DDR2 memory, SATA, RapidIO or PCI-E, and GigE connectivity.
Pleora Technologies has released a frame grabber that converts Sony FCB-EV7520A block cameras into GigE Vision 2.0 cameras.
Curtiss-Wright Controls Embedded Computing's PGE2, a dual-port Gigabit Ethernet (GigE) PMC card powered by an Intel 82546EB Gigabit Ethernet Controller, is fully compatible with legacy 10/100BASE-TX networks and simplifies the addition of GigE networking into existing VME, CompactPCI or PCI embedded systems.