
Media 2-11
uses light backscattering to analyze bers. OTDR takes a snapshot of the ber’s optical character-
istics. It sends a high-powered pulse into the ber and measures the light scattered back toward the
instrument. OTDR can be used to locate ber breaks, splices, and connectors, as well as to measure
loss. In order to completely specify a ber-optic cable, four primary performance categories must be
quantied: installation specications, environmental specications, ber specications, and optical
specications.
2.4 Wireless Links
Although a wireless radio link has many advantages with respect to mobility, the list of technical
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