BDS Signal Distribution and Amplification 2

Question 1

What is the typical input impedance of coaxial cable distribution equipment in a US cable broadband system?

Accepted Answer

75 ohms

Answer

All cable broadband distribution equipment in the US is designed for a 75-ohm impedance environment, matching the characteristic impedance of the coaxial cable.

Question 2

Which specification describes the maximum allowable level difference between the highest and lowest RF channels at an amplifier output?

Accepted Answer

Tilt

Answer

Tilt refers to the intentional or measured difference in signal level between the lowest and highest frequency channels across the amplifier's passband.

Question 3

A line extender amplifier is typically used in what part of the cable distribution network?

Accepted Answer

On feeder or distribution cables to extend reach to taps

Answer

Line extender amplifiers are placed on feeder/distribution cables to overcome additional attenuation and serve tap clusters farther from the node or bridger.

Question 4

What is the purpose of an automatic gain control (AGC) circuit in a cable amplifier?

Accepted Answer

To maintain a constant output level despite input level variations

Answer

AGC circuits automatically adjust amplifier gain to compensate for signal level variations caused by temperature changes or upstream disturbances, maintaining a stable output.

Question 5

Which type of splitter divides a cable signal equally between two output ports?

Accepted Answer

2-way splitter

Answer

A 2-way splitter divides the input signal equally, with each output port receiving approximately 3.5 dB less signal than the input (3 dB split loss plus ~0.5 dB insertion loss).

BDS - Broadband Distribution Specialist Practice Test

BDS - Broadband Distribution Specialist Practice Test

BDS Signal Distribution and Amplification 2