Final answer:
The most important measure of coax cabling is its resistance, which affects signal attenuation. Resistance is determined by the length of the cable, the inner and outer conductor dimensions, and the insulating material's resistivity. Proper measurement ensures minimal leakage current and optimal signal integrity.
Step-by-step explanation:
The significance of coaxial cable measurements lies in understanding how the cable will perform in transmitting signals over distances. The most important measure of coaxial cabling is its resistance, which can impact signal attenuation or weakening. Resistance in coaxial cables is influenced by the cable length, the diameters of the inner and outer conductors, and the resistivity of the insulating material between them.
Coaxial cables are designed to mitigate leakage current, which can lead to signal loss. This is especially critical in longer cable runs, such as the 100 meters span mentioned. It's also worth noting that because of the design of coaxial cables, magnetic field interference from DC power lines is minimal due to the cancellation of opposing currents. Hence, a surveyor measuring magnetic fields would not need to worry about the influence of coaxial cables in the vicinity.
Coaxial cables serve as useful transmission lines in various applications such as in cable TV and audiovisual connections in households. Their design, with an inner conductor and an outer concentric conductor separated by an insulator (like polyethylene), effectively helps in noise reduction. This makes the determination of a coaxial cable's resistance an essential consideration for maintaining the integrity of the transmitted signals and ensuring reliable performance.