Belden HIRSCHMANN BRS20, User Manual

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7.12.4 2.5 Gigabit Ethernet SFP transceiver
Product code
M-SFP-2.5-... Mode
a
a. MM = Multimode, SM = Singlemode, LH = Singlemode Longhaul
Wave length Fiber System
attenuation Example for F/O
cable length Fiber
attenuation BLP/dispersion
MM/LC EEC MM 850 nm 50/125 µm 0 dB ... 4 dB 0.34 mi (0.55 km) 3.5 dB/km 2000 MHz×km
(OM3)
MM/LC EEC MM 850 nm 50/125 µm 0 dB ... 4 dB 0.25 mi (0.4 km) 3.5 dB/km 500 MHz×km
(OM2)
MM/LC EEC MM 850 nm 62.5/125 µm 0 dB ... 4 dB 0.11 mi (0.17 km) 3.5 dB/km 200 MHz×km
(OM1)
SM-/LC EEC SM 1310 nm 9/125 µm 0 dB ... 8.5 dB 3.11 mi (5 km) 0.4 dB/km 3.5 ps/(nm×km)
SM/LC EEC SM 1310 nm 9/125 µm 0 dB ... 13 dB 12.43 mi (20 km) 0.4 dB/km 3.5 ps/(nm×km)
SM+/LC EEC SM 1310 nm 9/125 µm 12 dB ... 25 dB 27.96 mi (45 km) 0.4 dB/km 3.5 ps/(nm×km)
LH/LC SM 1551 nm 9/125 µm 14 dB ... 28 dB 80 km
b
b. F/O connections using DWDM technology (Dense Wave Division Multiplexing) typically have filters which use up the remaining attenuation
budget.For point-to-point connections without filters and with max. 1.5 dB of connector losses the max. F/O connection length is 59 mi (95 km).
0.25 dB/km 19 ps/(nm×km)
LH+/LC EEC LH 1550.12 nm 9/125 µm 13 dB ... 32 dB 38.52 mi ...
72.07 mi
(62 km ... 116 km) 0.25 dB/km 19 ps/(nm×km)
LH+/LC EEC LH 1550 nm 9/125 µm 13 dB ... 32 dB 38.52 mi ...
85.75 mi
(62 km ... 138 km) 0.21 dB/km 19 ps/(nm×km)
(typically)
Table 32: F/O port 2.5 Gbit/s (SFP fiber optic Gigabit Ethernet transceivers)