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Larry Desjardin
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Re: Olympic measurements
Larry Desjardin   4/4/2014 10:10:23 AM
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Wasn't therre a little controversy about the measurement aspects of Phelp's win? I think the cameras shows that the competitor could have touched the end of the lane first.  But there is a switch that has to be lightly depressed from the swimmer's momentum when they touch it, and the competitor was stretched out trying to touch the wall first, and slowing down. Phelps gave the wall a strong jab, and won.

MeasurementBlues
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Olympic measurements
MeasurementBlues   4/3/2014 11:47:41 AM
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Remember when Michael Phelps won a gold medal in swimming by 10 msec (0.01 sec)? That wouldn't have been possible without high-speed cameras. Measuring 10 msec is easy. We can measure picoseconds.

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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