An Optical Time-Domain Reflectometry, OTDR, method for characterizing an optical fiber link, the OTDR method comprising: performing at least one first OTDR acquisition toward the optical fiber link, wherein each OTDR acquisition is performed by propagating in the optical fiber link under test, a test signal corresponding to a first pulse width and detecting corresponding return light from the optical fiber link so as to obtain an OTDR trace representing backscattered and reflected light as a function of distance in the optical fiber link; from said at least one first OTDR acquisition, identifying one or more events along the optical fiber link and estimating at least one of a value of insertion loss and a value of reflectance associated with each of said one or more events; determining a pass or fail status associated with each of the one or more events by comparing at least one of said value of insertion loss and said value of reflectance associated with each of said one or more events to an established PASS/FAIL threshold; and characterized in that if a fail status is determined: determining one or more values of one or more OTDR acquisition parameters to re-assess the event for which a fail status is determined, wherein said OTDR acquisition parameters comprise a second pulse width shorter than said first pulse width, performing a second OTDR acquisition toward the optical fiber link using the one or more determined OTDR acquisition parameters, and from the second OTDR acquisition, deriving an updated value of at least one of said value of insertion loss and said value of reflectance associated with the event for which the fail status is determined. performing at least one first OTDR acquisition toward the optical fiber link, wherein each OTDR acquisition is performed by propagating in the optical fiber link under test, a test signal corresponding to a first pulse width and detecting corresponding return light from the optical fiber link so as to obtain an OTDR trace representing backscattered and reflected light as a function of distance in the optical fiber link; from said at least one first OTDR acquisition, identifying one or more events along the optical fiber link and estimating at least one of a value of insertion loss and a value of reflectance associated with each of said one or more events; determining a pass or fail status associated with each of the one or more events by comparing at least one of said value of insertion loss and said value of reflectance associated with each of said one or more events to an established PASS/FAIL threshold; and characterized in that if a fail status is determined: determining one or more values of one or more OTDR acquisition parameters to re-assess the event for which a fail status is determined, wherein said OTDR acquisition parameters comprise a second pulse width shorter than said first pulse width, performing a second OTDR acquisition toward the optical fiber link using the one or more determined OTDR acquisition parameters, and from the second OTDR acquisition, deriving an updated value of at least one of said value of insertion loss and said value of reflectance associated with the event for which the fail status is determined. determining one or more values of one or more OTDR acquisition parameters to re-assess the event for which a fail status is determined, wherein said OTDR acquisition parameters comprise a second pulse width shorter than said first pulse width, performing a second OTDR acquisition toward the optical fiber link using the one or more determined OTDR acquisition parameters, and from the second OTDR acquisition, deriving an updated value of at least one of said value of insertion loss and said value of reflectance associated with the event for which the fail status is determined.