it 327 - schweber chap 71 getting our hearts right is much more important than getting the answers...

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IT 327 - Schweber Chap 7 1

Thought of the Day

Getting our hearts right is much more important than getting the answers right.

- Alan L. WilkinsAcademic V.P., BYU

Dec 5, 1995 Devotional

IT 327 - Schweber Chap 7 2

Schweber, Chap 7:Wire and Cable Media

IT 327 - Schweber Chap 7 3

Wire and Cable Model Parameters

IT 327 - Schweber Chap 7 4

Single-Ended or Unbalanced Lines

IT 327 - Schweber Chap 7 5

Line Drivers

IT 327 - Schweber Chap 7 6

Line Drivers

IT 327 - Schweber Chap 7 7

Differential or Balanced Lines

IT 327 - Schweber Chap 7 8

Differential or Balanced Lines & CMRR

CMRR = Common Mode Rejection RatioTypically 60 – 120 dB (voltage)

IT 327 - Schweber Chap 7 9

Regenerating Receivers

IT 327 - Schweber Chap 7 10

Regenerating Receivers

IT 327 - Schweber Chap 7 11

Coaxial Cable & Velocity of Propagation

Characteristic

IT 327 - Schweber Chap 7 12

Characteristic Z (Zo)

𝑍 𝑜=√ 𝑅+ 𝑗2 π 𝑓 L𝐺+ 𝑗2 π 𝑓 C

𝑍 𝑜≈ √ 𝐿𝐶Assume: R << XL, and G << XC:

𝑍 𝑜≈ √ 𝑗 2π 𝑓 L𝑗2π 𝑓 C

IT 327 - Schweber Chap 7 13

Reflections on Reflections

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