How is a coaxial cable tested in the field for continuity and integrity?

How is a coaxial cable tested in the field for continuity and integrity?

• A. Visually inspecting for kinks and physical damage.
• B. Measuring DC resistance with a simple multimeter.
• C. Using a digital oscilloscope to scan RF spectrum.
• D. Using a handheld RF test meter or return-path test equipment to verify continuity and signal levels.

Answer: (D)

In field testing coax for continuity and integrity, you want a tool that can verify both a complete path and how RF signals behave through the line. A handheld RF test meter or return-path test equipment is designed for this purpose. It can inject a known RF signal, measure the actual signal levels along the line, and report on continuity, insertion loss, and return loss across the service band. This gives a direct, practical readout of whether the cable is intact and performing within spec, including identifying bad connectors, splits, or moisture-related losses. Visual inspection only looks for physical damage and can miss internal breaks or impedance issues. Measuring DC resistance with a simple multimeter checks only the presence of continuity at zero frequency and won’t reveal RF impedance or loss. Using a digital oscilloscope to scan the RF spectrum isn’t the standard field method for verifying both continuity and RF performance across the relevant bands; specialized RF test gear is designed exactly for these measurements and is far more efficient in the field.

In field testing coax for continuity and integrity, you want a tool that can verify both a complete path and how RF signals behave through the line. A handheld RF test meter or return-path test equipment is designed for this purpose. It can inject a known RF signal, measure the actual signal levels along the line, and report on continuity, insertion loss, and return loss across the service band. This gives a direct, practical readout of whether the cable is intact and performing within spec, including identifying bad connectors, splits, or moisture-related losses.

Visual inspection only looks for physical damage and can miss internal breaks or impedance issues. Measuring DC resistance with a simple multimeter checks only the presence of continuity at zero frequency and won’t reveal RF impedance or loss. Using a digital oscilloscope to scan the RF spectrum isn’t the standard field method for verifying both continuity and RF performance across the relevant bands; specialized RF test gear is designed exactly for these measurements and is far more efficient in the field.