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1000BASE-SX is a fiber optic gigabit Ethernet standard for operation over multi-mode fiber using a 770 to 860 nanometer, near infrared (NIR) light wavelength.
The standard specifies a distance capability between 220 meters (62.5/125 µm fiber with low modal bandwidth) and 550 meters (50/100 µm fiber with high modal bandwidth). In practice, with good quality fibre and terminations, 1000BASE-SX will usually work over significantly longer distances.[citation needed]
This standard is highly popular for intra-building links in large office buildings, co-location facilities and carrier neutral internet exchanges.
Optical power specifications of SX interface: Minimum output power = -9.5 dBm. Minimum receive sensitivity = -17 dBm.
name medium specified
distance
1000BASE-CX Balanced copper cabling 25 meters
1000BASE-LX Multi-mode fiber 550 meters
1000BASE-LX Single-mode fiber 5 km
1000BASE-SX Multi-mode fiber using 850 nm wavelength 550 meters
1000BASE-LH Single-mode or multi-mode fiber using 1310 nm wavelength 10 km
1000BASE-ZX Single-mode fiber at 1550 nm wavelength ~ 70 km
1000BASE-LX10 Single-mode fiber using 1310 nm wavelength 10 km
1000BASE-BX10 Single-mode fiber, over single-strand fiber: 1490 nm downstream 1310 nm upstream 10 km
1000BASE-T Twisted-pair cabling (CAT-5, CAT-5e, CAT-6, or CAT-7) 100 meters
1000BASE-TX Twisted-pair cabling (CAT-6, CAT-7) 100 meters
Posted by waqasahmad
550 Meters
Posted by peterDickersonWare
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