Patent Number: 6,298,118

Title: System and method for processing of communication line test signals, such as enhancement processing

Abstract: A communication line tester system and method allows for effective measurement and presentation of communication line characteristics. The communication line tester includes a transmitter, an analog-to-digital converter and a main processor. The transmitter is electrically coupled to the communication line. The analog-to-digital converter is electrically coupled to the communication line. The main processor is electrically coupled to the analog-to-digital converter. The main processor include a pseudo-random code processor configured to generate pseudo-random coded signals for transmission by the transmitter on to the communication line and to decode pseudo-random coded signals received by the main processor from the analog-to-digital converter. The main processor also includes a multiple waveform based distortion removal processor configured to remove distortion produced by non-linear operation of tester components from signals based on a plurality of signals received from the analog-to-digital converter, the distortion removal based on a plurality of coded signals generated by the pseudo-random code processor. The main processor also includes an even-order distortion removal processor, a display presentation processor, a baseline distortion removal processor, and an open/short processor.

Inventors: Liggett; Arthur B. (Snohomish, WA)

Assignee: Fluke Corporation

International Classification: H04M 1/24 (20060101); H04B 3/46 (20060101); H04M 3/28 (20060101); H04M 3/30 (20060101); H04M 001/24 ()

Expiration Date: 10/02/2018