Abstract: A method for producing a statistical profile of a repetitive electrical signal entails selecting a window pulse width that is preferably a large multiple of the period of the signal, setting a comparison threshold, and counting the time that the signal is above (or below) the comparison threshold during the window pulse. The comparison threshold is then repeatedly incremented (or decremented) over the amplitude range of the signal, while this procedure is repeated at each level. The difference is then taken between the times measured at adjacent amplitude increments and the absolute value of these differences is displayed as the waveform profile. An apparatus for implementing this method includes a counter/timer, a gate, a comparator, a pulse generation circuit, a comparison threshold generation circuit, and a microprocessor for controlling the other circuit elements and performing calculations.

Abstract: An arrangement for storing a coil of optical fiber prior to and during an inner peel deployment of the optical fiber from the coil comprises an outer aluminum casing, a body of solid foam material in the interior of the casing, and a barrier sheet in the interface, between the foam body and the coil of optical fiber. The foam body is formed in situ in a confining space outwardly and axially delimited by the casing and inwardly delimited by the barrier sheet and by two end lids, by introducing the material of the body into the enclosed space through openings in the casing and letting the material foam and cure in the spacing. During the formation of the body, the coil of optical fiber is supported on a mandrel which is, in turn coaxially supported on the end lids. After the foamed material has solidified, the end lids and the mandrel can be removed and the arrangement is now ready for inner peel deployment of the optical fiber therefrom.