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David Ashton
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Other solutions....
David Ashton   12/15/2013 5:06:09 AM
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Hi Carolyn

Upfront let me say I know very little of LVDTs and have never used them, but they are a very elegant way of sensing linear displacement.

When you say they are inherently frictionless....although simple, they have moving parts so there must be some friction?  And in wet/icy conditions they could get frozen?

Were I to encounter the problems of crosstalk I would try something like using different excitation frequencies for each LVDT, and have a narrowband filter in each signal conditioner.   Are solutions like this used?   But Alliance's solution is also clever.  And I suspect thay know more than me about these things :-)

_hm
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Need more graphical presentation
_hm   12/13/2013 5:14:33 PM
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@Carolyn: Thanks for information. However, few grpahical presentation would have made it more facile to comprehend. Can digital signal processing can also be applied to dispense with this problem?

 



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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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