在不同数字电视传输系统中保持可靠、高质量服务的秘诀在于关注那些有可能破坏系统完备性的关键因素。本文介绍这些关键的射频测量，它们可以帮助在收视者完全丧失数字电视服务和画面之前提前检测出有关的问题。-In different digital television transmission system to maintain reliable, high-quality services for those concerned about the secret lies in the possibility of complete destruction of the system of the key factors. This article describes these critical RF measurements, they can help the viewer to complete loss of digital TV services and to detect the screen before the problem.