When selecting reference test cables, which characteristic is recommended?

When selecting reference test cables, the recommended characteristic is low loss. Low loss is critical in fiber optic applications because it ensures that the test cable introduces minimal attenuation to the signal being measured. This is essential for accurate testing and troubleshooting, as high loss could lead to incorrect conclusions about the performance of the fiber link being assessed.

A reference test cable with low loss allows for more precise measurements during testing procedures, helping technicians identify any issues that may arise in the fiber optic network. Maintaining low loss is particularly important in high-speed or long-distance applications, where even small amounts of loss can significantly impact data integrity and system performance.

While factors such as reflectance, flexibility, and cost-effectiveness are also important in practical scenarios, they do not directly influence the accuracy and reliability of the test results in the same way that low loss does. Therefore, low loss is the key characteristic when it comes to ensuring dependable testing of fiber optic installations.