Signal Distribution Flashcards
7 cards from real SBCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Signal Distribution flashcards as text
What is the effect of a sharp bend in a coaxial cable on signal distribution?
Answer: It can cause impedance mismatch and signal loss
Sharp bends in coaxial cable can deform the dielectric and alter the cable's geometry, causing impedance mismatches and increased signal loss.
In satellite distribution systems, what does the term 'cascade loss' refer to?
Answer: Cumulative signal loss through multiple passive components
Cascade loss refers to the cumulative signal attenuation that occurs as a signal passes through multiple passive distribution components like splitters and cables.
Which distribution component has the LEAST insertion loss?
Answer: 2-way splitter
A 2-way splitter typically has the lowest insertion loss (~3.5 dB) compared to higher-way splitters which divide the signal among more outputs.
What is a 'standing wave' in a coaxial cable distribution system?
Answer: A pattern of voltage and current variations caused by signal reflections
Standing waves result from signal reflections due to impedance mismatches, creating a stationary pattern of voltage and current variations along the cable.
Why is it important to use weatherproof connectors on outdoor satellite signal distribution runs?
Answer: Moisture ingress causes oxidation and increased signal attenuation
Moisture ingress into connectors causes oxidation and corrosion, which significantly increases signal attenuation and can cause complete signal failure.
In a whole-home satellite distribution system, what is the advantage of using a centralized distribution point?
Answer: It allows easier troubleshooting and signal level management
A centralized distribution point allows technicians to easily measure and adjust signal levels from a single location, simplifying troubleshooting and maintenance.
What problem does a 'return path' filter solve in a satellite distribution system connected to a cable plant?
Answer: It blocks upstream noise from cable modems from entering the satellite system
A return path filter blocks upstream noise generated by cable modems and other return-path devices from entering and degrading the satellite signal distribution system.