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ＳｕｎＳｅｔＳＤＨＣ是一种能够广泛应用于ＳＯＮＥＴ／ＳＤＨ网络不同环境且具有很高性价比的手持式测试设备 ,为网络传输的维护提供了更多便利。该设备在具有菜单驱动操作风格的同时 ,还具有图形化的显示 ,操作界面友好 ,许多烦琐的测试设置能够以图形化的方式显示（如负荷
SunSetSDHC is a hand-held test device that can be widely used in different environments of SONET / SDH networks and has high performance-price ratio. SunSetSDHC provides more convenience for network transmission maintenance. The device has a menu-driven operating style, but also has a graphical display, user-friendly interface, many cumbersome test settings can be displayed graphically (such as load