摘要
光同步数字体系（SDH）传输网是一个集复用、同步信息传输和交叉功能为一体的综合信息网。其中环形组网保护具有完善的保护功能和灵活的组网方式,在SDH网络中应用广泛。基于华为Optix 155/622H光传输平台,从传输业务调度、机架配置、网同步设置、通信参数配置、初始数据配置等方面研究了SDH光传输环型组网配置,通过光功率计以及误码仪的测试,实际所测得的发光功率的平均值为-9.40dBm,测试值与平均值的最大绝对误差值为0.02dBm。光接口灵敏度平均值为-27.60dBm,测试值与平均值的最大绝对误差值为0.02dBm。在此均值和绝对误差值范围内,系统工作在线性状态,设备在最佳的工作状态。对SDH1、SDH2、SDH3网元的2M接口进行误码测试,测试结果显示24h内误码为0。验证了SDH环形组网的自愈保护功能。
The transmission network of optical synchronous digital hierarchy（SDH）is a comprehensive information network integrating multiplexing,synchronous information transmission and cross-functional integration.Among them,the ring network protection has perfect protection functions and flexible networking modes,and is widely used in SDH networks.Based on the optical transmission platform of Huawei Optix 155/622 H,this paper has studied the SDH optical transmission ring network configuration from the transmission business scheduling,frame configuration,network synchronization settings,communication configuration parameters and initial data configuration etc.Through the optical power meter and the bit-error tester,the average value of actual measured luminous power is-9.40 dBm,the maximum absolute error between the test value and the average value is 0.02 dBm.The average value of the optical interface sensitivity is-27.60 dBm,the maximum absolute error between the test value and the average value is 0.02 dBm.In the range of mean and absolute error value,the system work is in a linear state and the device is in the best working condition.By means of bit-error test to 2 M port of SDH1,SDH2,SDH3 network element,the test result shows that the error code is 0 within 24 hours,the self-healing protection function of SDH ring network has been verified.
作者
陆锋
黄刚
Lu Feng;Huang Gang(Department of Electronic Engineering, Taiyuan Institute of Technology, Taiyuan 030008. Chin)
出处
《电子测量技术》
2018年第8期107-111,共5页
Electronic Measurement Technology
