Method for measuring spectral energy interference in a cable tra

Details Method for measuring spectral energy interference in a cable tra Method for measuring spectral energy interference in a cable tra

1997-09-05

1999-08-17

Do, Diep N.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Parameter related to the reproduction or fidelity of a...

324613, 324 7619, 455 673, G01R 2726, H04B 1700

Patent

active

059398876

ABSTRACT:
A method for measuring interference in a cable transmission system includes the step of establishing a spectrum frequency measurement window having start and stop frequencies and an amplitude threshold. Data is acquired over the window representative of the spectral energy of the cable transmission system within the window and the data is compared against the threshold value. If the data falls below the threshold value, indicating the absence of a carrier signal within the window, a display is generated characterizing the interference over the window. Additional measurement windows may be established having different start and stop frequencies and thresholds for measuring different portions of the cable transmission system frequency spectrum.

REFERENCES:
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patent: 4839583 (1989-06-01), Takano et al.
patent: 5073822 (1991-12-01), Gumm et al.
patent: 5210483 (1993-05-01), Amamoto et al.
patent: 5608331 (1997-03-01), Newberg et al.
patent: 5761614 (1998-06-01), Leitch

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