Where should at least one proof-of-performance test point be located in a cable system?

In a cable system, the location of a proof-of-performance test point is crucial for ensuring that the system operates correctly and meets specified performance standards. Having at least one test point at the end of the longest cascade is important because it allows technicians to evaluate the signal quality and integrity after it has traveled through the longest possible distance within the system. This position helps to identify any potential issues such as signal loss, interference, or degradation that may occur when the signal traverses through multiple components and over longer distances.

By testing at the end of the longest cascade, technicians can also assess the effectiveness of the entire system, including all amplification and distribution nodes, ensuring that the end user receives a reliable signal. This position ultimately reflects the real-world performance experienced by customers, making it a critical point for performance verification.