Eleven Causes of Line Noise
8. Jitter may affect the accuracy of the data being transmitted because minute variations in amplitude, phase and frequency always occur
9. Harmonic Distortion is usually caused by an amplifier on a circuit that does not correctly represent its output with what was delivered to it on the input side
10. Phase hits are short- term shifts “out of phase,” with the possibility of a shift back to phase
11. Line outages are a catastrophic causes of errors and incomplete transmissions (e.g., caused by telephone-end office equipment, storms, loss of carrier signal)