Construction Coordinator Practice Exam

What describes a situation where higher frequency signal levels remain greater than lower frequencies due to low cable attenuation?

1. Negative tilt

2. Positive tilt

3. Signal inversion

4. Frequency modulation

The correct answer is: Positive tilt

In telecommunications, a situation where higher frequency signal levels are consistently greater than lower frequency levels due to low cable attenuation is described as positive tilt. Positive tilt occurs when the signal strength increases with frequency, which is often desirable in systems where higher frequency signals are more susceptible to attenuation. By implementing a positive tilt, operators can enhance the reception quality of high-frequency channels used for various applications such as video and data transmission. This phenomenon is significant because it helps maintain the relative signal levels across different frequency bands, ensuring that the higher frequency components are not lost or degraded compared to lower frequencies. This is particularly important in maintaining the overall integrity of the signal, especially in environments where cable quality plays a critical role in signal transmission. The other options represent different concepts. For example, negative tilt would indicate that lower frequency signals are stronger than higher frequency ones. Signal inversion refers to a complete reversal of the signal's characteristics, while frequency modulation is a technique for encoding information in a carrier wave by varying its frequency. Thus, understanding these distinctions underscores the importance of recognizing positive tilt as a beneficial attribute in minimizing the impact of attenuation in high-frequency signals.