Method of measuring jitter frequency response

Details Method of measuring jitter frequency response Method of measuring jitter frequency response

2004-06-29

2009-06-09

Tse, Young T. (Department: 2611)

Pulse or digital communications

Testing

Phase error or phase jitter

C375S371000

Reexamination Certificate

active

07545858

ABSTRACT:
A method of measuring jitter frequency response includes recovering a clock signal from a data input stream to provide a recovered clock signal and counting the recovered clock signal over a selected time period to provide a recovered clock count. A reference signal is counted over the selected time period to provide a reference signal count. The recovered clock count is compared to the reference signal count and a frequency of the recovered clock signal for the selected time period is calculated.

REFERENCES:
patent: 5208833 (1993-05-01), Erhart et al.
patent: 5481563 (1996-01-01), Hamre
patent: 6239848 (2001-05-01), Mycynek et al.
patent: 2005/0185748 (2005-08-01), Wahi et al.

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