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XTRAMUS TECHNOLOGIES
®
Cat 7
This standard specifies four individually-shielded pairs (STP) inside an overall shield. Designed
for transmission at frequencies up to 600 MHz. It has better performance than Cat 6a.
3.1.2 10GBASE-R
(Optical Fiber)
10GBASE-R is 10Gbps Ethernet connection that based on IEEE802.3ae. It uses fiber as
transmission media with different specification of fiber, connector and transceiver. XG2 uses two
standards, 10GBASE-LR and 10GBASE-SR.
10GBASE-SR
10GBASE-SR ("short range") uses 64B/66B encoding and 850 nm wavelength lasers. It is
designed to support short distances over deployed multi-mode fiber cabling, it has a range of
between 26 meters (85 ft) and 82 meters (270 ft) depending on cable type. It also supports 300
meters (980 ft) operation over new, 50 µm 2000 MHz•km OM3 multi-mode fiber (MMF).
The transmitter can be implemented with a VCSEL (Vertical Cavity Surface Emitting Laser) which
is low cost and low power. MMF has the advantage of having lower cost connectors than SMF
(single-mode fiber) due to its wider core.
10GBASE-SR delivers the lowest cost, lowest power and smallest form factor optical modules.
10GBASE-LR
10GBASE-LR ("long range") is a Long Range Optical technology delivering serialized 10 gigabit
Ethernet over a laser with 1310 nm wavelength connection on single-mode fiber via IEEE 802.3
Clause 49 64B-66B Physical Coding Sub layer (PCS) using a line rate of 10.3125.
Содержание XG2
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