User guide

Mini-GBIC Type and Support
ExtremeWare 7.2e Installation and User Guide 25
Mini-GBIC Type and Specifications
Table 4 describes the mini-GBIC type and distances for the Summit 400-48t.
SX Mini-GBIC Specifications
Table 5 describes the specifications for the SX mini-GBIC.
Total optical system budget for the SX mini-GBIC is 11.5 dB. Extreme Networks recommends that 3 dB
of the total budget be reserved for losses induced by cable splices, connectors, and operating margin.
While 8.5 dB remains available for cable-induced attenuation, the 1000BASE-SX standard specifies
supported distances of 275 meters over 62.5 micron multimode fiber and 550 meters over 50 micron
multimode fiber. There is no minimum attenuation or minimum cable length restriction.
LX Mini-GBIC Specifications
Table 6 describes the specifications for the LX mini-GBIC.
Table 4: Mini-GBIC types and distances
Standard Media Type
Mhz•Km
Rating
Maximum
Distance
(Meters)
1000BASE-SX
(850 nm optical window)
50/125 µm multimode fiber
50/125 µm multimode fiber
62.5/125 µm multimode fiber
62.5/125 µm multimode fiber
400
500
160
200
500
550
220
275
1000BASE-LX
(1310 nm optical window)
50/125 µm multimode fiber
50/125 µm multimode fiber
62.5/125 µm multimode fiber
10/125 µm single-mode fiber
400
500
500
—
550
550
550
5,000
1000BASE-ZX
(1550 nm optical window)
10/125 µm single-mode fiber — 50,000
Table 5: SX mini-GBIC specifications
Parameter Minimum Typical Maximum
Transceiver
Optical output power –9.5 dBm –4 dBm
Center wavelength 830 nm 850 nm 860 nm
Receiver
Optical input power sensitivity –21 dBm
Optical input power maximum –4 dBm
Operating wavelength 830 nm 860 nm
General
Total system budget 11.5 dB