Which of the following can cause shielded cables to radiate or receive interference?
Low inductance ground connections at both ends of the shield
Common-mode currents on the shield and conductors✓Правильный ответ
Use of braided shielding material
Tying all ground connections to a common point resulting in differential-mode currents in the shield
Объяснение
A shield contains the differential signal it carries, but current flowing in the same direction on the shield and the inner conductors turns the whole cable into an antenna that radiates or picks up energy regardless of shield quality. Low-inductance grounding and braided shielding reduce the problem rather than causing it.