Siemens FN2012-A1, Руководство по установке

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Sample calculation
● Optical budget for VN2002: 11 dB
● Cable loss: 2.5 dB/3280 ft / 2.5 dB/km
● Male connector loss: 1.0 dB
● Transmission losses: 0.5 dB
Length = (optical budget – 2x male connector loss – transmission losses) / (cable loss
per km)
Length in km = (11 dB – 2 x 1 dB – 0.5 dB) / 2.5 dB per km = 3.4 km
Length in ft = (11 dB – 2 x 1 dB – 0.5 dB) / 2.5 dB/3280 ft = 9842 ft
Technical data
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