T-CARRIER SYSTEMS Flashcards
REVIEWER
______ are used for the transmission of PCM-encoded time-division multiplexed digital signals in North America.
T-Carriers
The distance between repeaters depends on _______ and ______.
Transmission Bit Rate and Line Encoding Technique used.
What are the main components of a Regenerative Repeater?
Amplifier, Equalizer, Timing Clock, Regenerator
What’s the purpose of the Amplifier in Regenerative Repeaters?
To make high amplitude signals stand out even more to distinguish the part where the signal is high and the signal is low.
What’s the purpose of the Equalizer in Regenerative Repeaters?
Equalizers smoothen the miniscule distortions within the signal. It removes noise without altering the overall frequency shape or trend of the signal.
How does Timing Clock work in regenerative repeaters?
After reshaping the deteriorated signal into a signal where the highs and lows are distinguishable, a pulse signal is created based on the highs and lows to get the timing of the original signal.
How does regenerator finish the process in Regenerative repeaters?
With the recovered clock as basis the regenerator alters the signal and turns it into a pulse signal with fixed Bit time and amplitude.
The spacing for regenerative repeaters are calculated to maintain the _____ within a certain threshold. Why?
SNR Ratio. Because if the SNR ratio degrades below the threshold, it will be hard or impossible to reliably decipher the original signal.
What does the “T” in T-Carrier mean?
Time Division Multiplexing (TDM)
