Dr. Mcmahon graduated from the Lake Erie College of Osteopathic Medicine, Erie Campus in 2004. He works in Sewell, NJ and 1 other location and specializes in Gastroenterology. Dr. Mcmahon is affiliated with Kennedy University Hospital-Stratford.
Donald John McMahon (January 4, 1930 July 22, 1987) was a right-handed relief pitcher in Major League Baseball. Born in Brooklyn, New York, he was signed ...
Us Patents
Optical Time Domain Reflectometer Having A Receiver With Selectively Controlled Gain
John D. Liebenrood - Portland OR Donald H. McMahon - Carlisle MA
Assignee:
Photon Kinetics Inc. - Beaverton OR
International Classification:
H01J 516
US Classification:
25022715
Abstract:
An optical time domain reflectometer comprises a detector device for detecting optical energy received at an end of a fiber under test, an amplifier having an input terminal connected to the detector device, and a photoconductive switch connected between the amplifier input terminal and a reference potential level. The photoconductive switch is selectively illuminated.