|Its a value entered into the analyzer that will impact on the accuracy of the length measurement for fiber links. |
The refractive index of a material is a measure of the speed of light in that material. It is defined as the ratio of the speed of light in a vacuum divided by the speed of light in the material. For glass this ratio is approximately 1.5 (300,000km/s divided by 200,000km/s).
This value of 1.5 may be entered as a rough estimate of the refractive index, however, this may give inaccuracies of up to 2% in measured lengths. The following default values are programmed into the DSP-4x00 CableAnalyzer: