 |  -Claude Shannon 1948 "The fundamental problem of communication is that of reproducing at one point either exactly or approximately a message selected at another point."
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- The mathematical theory of communication
- Relates channel information carrying capacity as a function of signal-to-noise across the usable bandwidth
What was clear in 1948 is clear today: Networks are Dynamic - Activity, collisions, retransmissions, token passing, Bits/sec.
Thus cabling system performance should be thought of in DYNAMIC terms. Cabling system design and specification is currently STATIC. - Static electrical parameters are used as guidelines, (NEXT, ELFEXT, ACR, etc.)
- Improved static parameters do not guarantee improved dynamic performance
System: Backbone & Horizontal It is the electronics, and the application protocol that make the channel dynamic 
Shannon's Law 
Not Clear: reduced dynamic capacity NetClear: clear, maximum dynamic capacity! 
C = Channel Capacity (information carrying capability) - Allowable frequencies which can be used without saturation: The 'Physical Limit'
- To maximize C we designed the complete channel to maximize the bandwidth and S/N ratio.
Channels operating at reduced capacity, due to cabling inadequacies, are called Not Clear! NetClear Channels allow operation at maximum capacity 
W = Bandwidth - In Gigabits per second (Gb/s)
- Measured in: MegaHertz, MHz

S = Signal Received (desired information) - Cabling and connectivity affects the transmitted signal, the key is to minimize the effects
- The better the cabling system, the better the signal received

N = Noise (unwanted signal, reducer of signal) - Noise component, N, is a summation of all noise sources
- Some sources can be controlled, and some cannot be controlled
- Noise sources we can control:
- CrossTalk
- Balance
- Return Loss
- Attenuation
- Impedance Match
- Noise that cannot be controlled: alien/environmental, improper grounding, overfill in conduit, poor installation

S/N = Signal-to-Noise Ratio - Allows for maximized dynamic performance of the channel as a transmitter/receiver of digital data
- S/N ratio is directly related to bit-errors
- A higher S/N ratio yields lower bit-errors
- Lower bit errors allow for higher capacity/throughput of the dynamic network
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