After completing the termination of a coaxial cable, what should be present between the shielding and the center conductor?

After terminating a coaxial cable, the presence of insulation between the shielding and the center conductor is crucial for ensuring proper functionality and safety. The insulation serves several key purposes: it prevents electrical contact between the inner conductor and the outer shielding, which could otherwise lead to short circuits or signal interference. Additionally, this insulation helps to maintain the integrity of the signal being transmitted through the coaxial cable by keeping the internal elements separate and protecting them from external environmental factors.

In coaxial cables, the design typically comprises a center conductor surrounded by an insulator, followed by a shielding layer. This layered structure not only reduces electromagnetic interference but also confines the signal within the cable, allowing for effective transmission. Therefore, having insulation in place ensures that the signal remains clear and that the cable operates safely, further enhancing its performance.

Continuity, conductivity, and grounding are important concepts in electrical systems, but they do not adequately describe the necessary relationship between the shielding and center conductor in a coaxial cable termination. In this context, insulation is the critical requirement that facilitates proper operation and safety.