What’s the difference between high-level CPD and low-level CPD?
Generally speaking, when experienced cable system workers think about CPD, they think about high-level CPD. This is the CPD that can be viewed on a spectrum analyzer. If you can see high-level CPD, it is most likely already network-affecting and causing problems. When you hear someone say they don’t have a CPD problem, what they really mean to say is that they don’t see high-level CPD very often. They can’t say they don’t have a low-level CPD problem for the simple reason that without Hunter, they have no way to measure it. Low-level CPD is what we’re calling CPD that is below the noise floor of the system. All high-level CPD first starts out as low-level CPD. That’s why it makes sense to address low-level CPD before it becomes network-affecting. This concept is what we call Predictive Maintenance. Through Predictive Maintenance, problems can be found and fixed on a less frantic basis – and they can be found before they impact the network and customers.
