SBCA Signal Distribution 3

Question 1

What is the effect of a sharp bend in a coaxial cable on signal distribution?

Accepted Answer

It can cause impedance mismatch and signal loss

Answer

Sharp bends in coaxial cable can deform the dielectric and alter the cable's geometry, causing impedance mismatches and increased signal loss.

Question 2

In satellite distribution systems, what does the term 'cascade loss' refer to?

Accepted Answer

Cumulative signal loss through multiple passive components

Answer

Cascade loss refers to the cumulative signal attenuation that occurs as a signal passes through multiple passive distribution components like splitters and cables.

Question 3

Which distribution component has the LEAST insertion loss?

Accepted Answer

2-way splitter

Answer

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.

Question 4

What is a 'standing wave' in a coaxial cable distribution system?

Accepted Answer

A pattern of voltage and current variations caused by signal reflections

Answer

Standing waves result from signal reflections due to impedance mismatches, creating a stationary pattern of voltage and current variations along the cable.

Question 5

Why is it important to use weatherproof connectors on outdoor satellite signal distribution runs?

Accepted Answer

Moisture ingress causes oxidation and increased signal attenuation

Answer

Moisture ingress into connectors causes oxidation and corrosion, which significantly increases signal attenuation and can cause complete signal failure.

(SBCA) Satellite Broadcasting and Communications Association Certification Practice Test

(SBCA) Satellite Broadcasting and Communications Association Certification Practice Test

SBCA Signal Distribution 3