What technique ensures accurate performance measurement of installed cables?

Conducting bit error rate tests is the technique that ensures accurate performance measurement of installed cables. Bit error rate testing evaluates the effectiveness and reliability of data transmission through the cables. It examines the integrity of the signal by sending data and measuring how many bits of data received are incorrect. This helps to identify issues such as attenuation, interference, and other factors that could affect the performance of the cabling system.

In contrast, visual inspections can reveal physical defects, but they do not assess the performance of the cabling during operation. Basic continuity testers check for simple electrical continuity, but they do not provide detailed information about the signal quality or errors that might occur during data transmission. Measuring cable weight is not a relevant technique for assessing performance, as it does not correlate with the operational characteristics of the cable. Thus, bit error rate tests stand out as the most comprehensive and accurate method of evaluating the performance of installed cables.