The transient that wasn’t there Engineering Investigations 9/29/2010 81 comments A manager’s near instant analysis of a problem with an engine electrical replacement part—done with no analysis or data—is wrong, of course
The mystery of the illogical logic gate Engineering Investigations 9/23/2010 44 comments It’s midnight, you haven’t found the bug yet, and in the morning the government contractor is visiting to see the prototype, but the logic isn’t acting logically.
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.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments