CATV系统中组件的屏蔽属性对系统性能至关重要。进入 出口问题可能会对系统的整体性能产生不利影响 监管和质量视角。入口问题可能会导致电视画面质量问题，以及数据的有效传输 允许虚假信号进入系统。出口问题可能导致系统中捕获的信号泄漏，并可能干扰无线通信 使用与系统泄漏的信号相同频率的通信。本文档的目标是解决系统中的同轴电缆和连接器，以及如何 正确衡量他们在这一关键领域的表现。

The shielding attributes of components in a CATV system are critical to system performance. Ingress and egress issues can have detrimental effects on the overall performance of the system from both regulatory and quality perspectives.Ingress issues can cause problems with television picture quality, and the effective transfer of data by allowing spurious signal into the system.Egress issues can allow signals captured in the system to leak out and possibly interfere with wireless communications which utilize the same frequencies as those signals being leaked from the system.It is the goal of this document to address the coaxial cables and connectors in the system, and how to properly gauge their performance in this critical area.