ADP switch and adjustable data acquisition window

Details ADP switch and adjustable data acquisition window ADP switch and adjustable data acquisition window

1994-01-27

1995-11-07

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2188

Patent

active

054651433

ABSTRACT:
An OTDR to examine light reflected from an optic fibre has an amplification stage that operates in either a high gain or low gain mode. To avoid saturation of the amplifier in the high gain mode, the trace is examined to identify the location of spikes and a switch is controlled to connect the amplifier to the signal after the occurrence of the spike.

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