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Sheetal.Pandey
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re: Interference-cost tradeoffs and cheating
Sheetal.Pandey   11/14/2011 9:04:49 AM
NO RATINGS
wow can you really do that..i mean sending mail to FCC with a copy to mfr..

BicycleBill
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re: Interference-cost tradeoffs and cheating
BicycleBill   11/14/2011 2:32:01 AM
NO RATINGS
Great story. Glad you are enjoying the series--it has strong readership and following (we can see everything!). Any engineer who does not know about EMC issues is either blissfully ignorant, or in deliberate suspension-of-reality mode. But that can't last long! (Or he/she is a 100% software engineer, writng high-level apps code very far removed from the mess of reality.

zeeglen
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re: Interference-cost tradeoffs and cheating
zeeglen   11/13/2011 9:01:10 PM
NO RATINGS
Or perhaps the system was never EMI tested at all. You might want to inform the FCC of your findings and CC the manufacturer/importer.

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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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