CATV System Design and Signal Propagation

1. What is the First Thing to Set to Make a Draft CATV?

Bring the correct response: The bandwidth to use.

2. For Purposes of Receiving Local Channels Broadcast by Cable Signal, Which is More Advisable?

Response: Receiving each local channel individually with a Yagi antenna.

3. What is the Most Important Recommendation for the Location of Satellite Dishes?

Bring the correct response: The distance should be as short as possible to the equipment or satellite receivers.

4. What Defines Television Programming for a Cable Company?

Bring the correct response: It is purely a business decision.

5. Which of the Following is Not Covered in the 10-Step CATV Design Process?

Response: NA

6. Definition of Final Quality Objectives

Quality objectives for the subscriber at the end of the drop for a good quality desired are: Response: XMOD 51

7. Indicate the Most Influential Factors for the Calculation of a CATV Network.

Indicate the incorrect one:

• a) The amplifier output level
• b) Loss of the coupler
• c) Loss by length of wire in dB
• d) Level of initial and amplifier input
• e) NA

8. For Cable Distribution, What is Recommended?

c) 0.500

9. What Values of Attenuation Pads are to be Considered in Design?

Indicate the error:

• a) 0
• b) 9
• c) 12
• d) 3
• e) NA

10. A Radio System Can Be Divided into Three Subsystems for Independent Study.

Indicate the error:

• a) Issuing
• b) Spread of the radio signals
• c) Receiving
• d) Bandwidth
• e) NA

11. What are the Parameters that Define the Issue (TX) of Radio Signals?

• a) Bandwidth requirements
• b) Type of emission
• c) TX power
• d) Type of polarization
• e) Occupied bandwidth
• f) Changes in the frequency of TX
• g) Unwanted emissions

12. There are Several Ways Depending on the Frequency Spread. Indicate Which are Used:

• A) Direct wave
• B) Troposphere
• C) Ionosphere
• D) Surface

13. The Propagation Phenomena are:

• a) Reflection
• b) Refraction
• c) Diffraction
• d) Dispersion
• e) Absorption

14. Using Known Diversity Techniques and Types:

To buffer the effects of fainting spells, "Space-frequency-angle, polarization-path-"

15. When We Talk About Reserve Teams and Teams of Diversity, Do We Mean the Same Thing?

No, because diversity ensures that the signal propagation reaches the receiver through different paths, and reserve protects the continuity of the signal in the TX and RX.

16. Define by a Formula the Power Balance:

Power delivered to the receiver (PIR = PET - LS), where LS = system losses.