Determine cable loss, connector loss, and total system loss in decibels (dB) to assess signal quality and repeater requirements. Fiber optic loss is calculated in two parts: cable loss and connector loss. Cable loss (dB) = cable length (km) × attenuation coefficient (dB/km). The greater the distance, the greater. At TREND Networks, we are frequently asked how much loss is allowed when conducting testing on fibre optic cabling. So how do you determine acceptable loss? When testing fibre optic cabling, determining acceptable loss is. This fiber loss calculator can estimate the total fiber link loss through a particular fiber optic link if the fiber length, the number of splices and number of connectors are known. There are a number of ways for. To be able to judge whether a fiber optic cable plant is good, one does a insertion loss test with a light source and power meter and compares that to an estimate of what is a reasonable loss for that cable plant.
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