Preventing crosstalk requires which measures?

Preventing crosstalk requires which measures?

• A. proper grounding of the communication cable shield
• B. proper spacing between power wiring and high voltage transients
• C. both a and b
• D. neither

Answer: (C)

Crosstalk happens when signals couple from one circuit to another through electric and magnetic fields. The way to prevent it effectively is to address both shielding and separation. Grounding the shield of a communication cable gives interference a safe path to flow to ground and keeps the signals inside the conductors from picking up noise along the shield. At the same time, keeping power wiring and communication cables well apart reduces inductive and capacitive coupling that occurs when they run parallel or near each other, especially during voltage transients. Using both strategies together minimizes the chance that unwanted signals will cross into the communication line, providing the strongest protection against crosstalk.

Crosstalk happens when signals couple from one circuit to another through electric and magnetic fields. The way to prevent it effectively is to address both shielding and separation. Grounding the shield of a communication cable gives interference a safe path to flow to ground and keeps the signals inside the conductors from picking up noise along the shield. At the same time, keeping power wiring and communication cables well apart reduces inductive and capacitive coupling that occurs when they run parallel or near each other, especially during voltage transients. Using both strategies together minimizes the chance that unwanted signals will cross into the communication line, providing the strongest protection against crosstalk.