SBCA Signal Distribution 4

Question 1

What is the maximum recommended cable run length for RG-6 coaxial cable in a residential satellite installation before amplification is typically required?

Accepted Answer

150 feet

Answer

RG-6 cable runs exceeding approximately 150 feet typically require amplification to compensate for signal loss at satellite frequencies.

Question 2

Which characteristic of a distribution amplifier is most important for maintaining signal quality in a satellite system?

Accepted Answer

Low noise figure

Answer

A low noise figure is critical in a distribution amplifier because it determines how much noise the amplifier adds to the signal, directly affecting receiver performance.

Question 3

In a commercial satellite distribution headend, what does AGC stand for and what does it do?

Accepted Answer

Automatic Gain Control — maintains consistent output signal levels

Answer

AGC (Automatic Gain Control) automatically adjusts amplifier gain to maintain consistent output signal levels despite variations in input signal strength.

Question 4

What is the purpose of using a 'home run' wiring topology in satellite signal distribution?

Accepted Answer

To run each receiver connection directly to the central distribution point

Answer

A home run topology runs individual cables from each receiver location directly back to a central distribution point, providing better signal isolation and troubleshooting capability.

Question 5

What causes 'intermodulation distortion' in a satellite distribution amplifier?

Accepted Answer

Non-linear operation when driven too close to saturation

Answer

Intermodulation distortion occurs when an amplifier is driven into non-linear operation near saturation, causing signals to mix and generate spurious frequencies.

(SBCA) Satellite Broadcasting and Communications Association Certification Practice Test

(SBCA) Satellite Broadcasting and Communications Association Certification Practice Test

SBCA Signal Distribution 4