Method for optimized rendering of eye diagrams synchronized to a recovered clock and based on a single shot acquisition
AssigneeTektronix, Inc.
InventorsKalev Sepp, John C. Calvin
Life of this patent
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Abstract
A first method for rendering an eye diagram synchronized to a recovered clock and based on a single shot acquisition of a digital storage oscilloscope, acquires a waveform and measures the timing of its edges. It then estimates the symbol rate of the waveform and derives clock signals in accordance with the edge timing and the estimated symbol rate. The waveform data is then sliced into frames with respect to the derived clock signals, and the frames are partially overlapped and aligned to form an eye diagram. In a second embodiment of the invention, the frames are aligned, without being overlapped, to form an eye diagram.
Claims6
A method, suitable for use in a digital storage oscilloscope, for rendering an eye diagram, comprising the steps of:
- acquiring a single shot acquisition of a waveform;
- measuring timing of edges of said acquired waveform;
- estimating a symbol rate of said acquired waveform;
- deriving a clock signal in accordance with said measured edge timing and said estimated symbol rate;
- slicing said acquired waveform into frames with respect to said derived clock signals;
- partially overlapping said frames in time;
- and
- aligning said partially overlapped frames to form an eye diagram.
A method, suitable for use in a digital storage oscilloscope, for rendering an eye diagram, comprising the steps of:
- acquiring a single shot acquisition of a waveform;
- measuring timing of edges of said acquired waveform;
- estimating a symbol rate of said acquired waveform;
- deriving a clock signal in accordance with said measured edge timing and said estimated symbol rate;
- slicing said acquired waveform into frames with respect to said derived clock signals;
- and
- aligning said partially overlapped frames to form an eye diagram.
Dependencies are inferred from the claim text.