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1998年9月14日,Tektronix公司宣布推出其最新型的ST2400A SDH/SONET测试装置。它采用了先进的光通信技术,是第一台优化用于测试密集波分复用(DWDM)用户系统的仪表。 ST2400A代替了其前身——ST2400,可以对SDH或SONET网元特性进行仿真。ST2400A优化用于测试通过WDM系统传输的2.488Gbit/s STM-16(SDH)或OC-48(SONET)网络的传输质量。
On September 14, 1998, Tektronix announced the launch of its newest ST2400A SDH / SONET test set. It incorporates advanced optical communications technology and is the first instrument to be optimized for testing dense wavelength division multiplexing (DWDM) user systems. ST2400A instead of its predecessor - ST2400, SDH or SONET network element can be emulated. The ST2400A is optimized for testing the transmission quality of 2.488 Gbit / s STM-16 (SDH) or OC-48 (SONET) networks transmitted over WDM systems.