Crosstalk values in communication systems are typically expressed in which unit?

Crosstalk is a type of interference that occurs when signals in one circuit or channel create an undesired effect in another circuit or channel. To quantify this interference, crosstalk values are usually expressed in decibels (dB). This is because decibels provide a logarithmic scale that allows for easier comparison of power levels and ratios, which is useful in systems where the signal strength can vary significantly.

By using decibels, engineers can effectively communicate the level of interference relative to the original signal strength, facilitating clear understanding and assessment of performance in communication systems. The use of this unit helps in diagnosing issues, ensuring that systems operate within acceptable limits of crosstalk, and maintaining the quality of communication.

The other units mentioned do not pertain to the measurement of crosstalk in the same context. Hertz measures frequency, volts indicate voltage levels, and ohms represent resistance, none of which directly relate to assessing signal interference in communication systems.