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CHAPTER 4: OPERATION FUNCTIONALITY
MULTILINK ML1600 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 4–5
The use of either multi-mode or single-mode fiber to operate at 100 Mbps speed over long
distances (i.e., in excess of 400 m) can be achieved only if the following are applied:
1. The 100 Mb fiber segment must operate in full-duplex (FDX) mode (i.e. the full-
duplex (factory default).
2. The worst-case OPB of the fiber link must be greater than the fiber cable's
passive attenuation, where attenuation is the sum of cable loss, LED aging
loss, insertion loss, and safety factor.
AG 100 Mb FX single 18+ (0.4) km 1310 nm 9/125 μm -20dB -31dB 9.0dB 18km 12.5dB 25km
G3, G4, G5 1000 Mb multi 0.55 km 1300 nm 62.5/125 μm
50/125 μm
-9.5dB -17dB 5.5dB 2km 12.5dB 4km
GC 100 Mb FX multi 2 (0.4) km 1310 nm 62.5/125 μm
50/125 μm
-20 dB-
23.5 dB
-31 dB
-31 dB
9.0 dB
5.5 dB
3.0 km
2.0 km
14 dB
12 dB
5.0 km
4.0 km
GF, GH, GJ 1000 Mb FX single 10 km 1310 nm 9/125 μm -9.5dB -20dB 8.5dB 17km 10.5dB 21km
GK, GL, GM 1000 Mb FX single 25 km 1310 nm 9/125 μm -4.0 dB -21 dB 15 dB 38 km 17.5 dB 43 km
Table 4–2: Power budget values for various modules
Module Speed Mode fdx (hdx) λ Size P
T
P
R
OPB
worst
d
worst
OPB
typ
d
typical