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Ritch Selfridge

Ritch Selfridge

Ritch Selfridge is the Director of Engineering for Amphenol Aerospace

12
Dec
0

High Speed Data Transmission for Non-EE's - Part 7 – The Blurry Edge

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On and off, ones and zeros--binary is beautiful, but moving the bits at high speed gets a little tricky.  A bit of data is represented by each transition from zero to one, or from one to zero; the faster you can make these transitions, the more bits of data you can move per unit of time.

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22
Nov
0

High Speed Data Transmission for Non-EE's - Part 6 – Can You Hear Me?

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b2ap3_thumbnail_Blogpost-Image-8.jpg
If we stick with the acoustic communication model, have you ever purchased tickets from someone behind a protective glass barrier?  If there is no speaker/microphone set up, this can be tough, as most of the acoustic energy gets reflected back, thus very little passes through. Or have you ever been at one end of a large corrugated pipe, and shouted towards the other end?  A series of echoes bounce back at you, as some of the acoustic energy is reflected by the corrugations.  While the reverberation... Continue reading
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05
Nov
0

High Speed Data Transmission for Non-EE's - Part 5 - Isolation

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b2ap3_thumbnail_Blogpost-Image-7.jpgNow, instead of spacing the people out, or putting quiet pairs of people between the pairs of people that like to talk, we can break the table up with booth walls that shield portions of the tables from each other.  This minimizes the crosstalk between adjacent pairs of people while taking up a minimum of space in either shielding or isolating them from one another.  With this arrangement, one can achieve a high density of communicators (or electrical signals) at a single table with minimal crosstalk.

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31
Oct
0

High Speed Data Transmission for Non-EE's - Part 4 - Control Who Talks

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b2ap3_thumbnail_Blogpost-Image-6.jpgAnother way to accomplish this same goal of reducing crosstalk would be to put quiet pairs of people between the pairs of people that like to talk, but like the spread-out model, the total number of high speed communicators is the same, but they may not be able to communicate as quickly.

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