| http://www.w3.org/ns/prov#value | - aid first light pulse having a known first pulse width; an analog-to-digital converter connected to said amplifier/filter means; a microprocessor connected to said timer and said analog-to-digital converter, said microprocessor including means for:detecting a discrete loss in said optical signal, said discrete loss corresponding to a fault in the optical fiber, computing an adjusted pulse width ba
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