laiyi0130/03/01WangYongEDDATECHANGENOTEAPPRAISALAUTHORITYORIGINATOR(S)ED01ONDAlcatelShanghaiBell1/13ALCATELSDH设备本机测试项目及测试方法laiyiED01ONDAlcatelShanghaiBell2/13目录一:光/电接口测试..........................................................................................................................................31.2接收机灵敏度......................................................................................................................................41.3光接口最小过载光功率....................................................................................................................51.4光接口参数..........................................................................................................................................61.5SDH设备的STM-N输入口的抖动容限测试............................................................................71.6SDH设备的抖动产生测试..............................................................................................................81.7SDH设备的映射抖动测试.............................................................................................................91.8SDH设备的结合抖动测试............................................................................................................101.9输入口允许频偏的测试..................................................................................................................12二:电源单元测试..........................................................................................................................................132.1工作电压测试....................................................................................................................................132.2电源供电保护...................................................................................................................................13三:EPS保护测试........................................................................................................................................13四:本机误码测试:......................................................................................................................................13laiyiED01ONDAlcatelShanghaiBell3/13一:光/电接口测试1.1光功率的测试测试说明:本测试用于测试激光器S点的发送光功率测试配置图:测试步骤:1)照配置图连接测试系统。2)设置相应的光端口强制发光。3)用光功率计测试端口光功率。E.U.T.STM-NOUTSTM-NINSTM-NOUTSTM-NIN光功率计laiyiED01ONDAlcatelShanghaiBell4/131.2接收机灵敏度光接收灵敏度(R点)测试说明:本测试用于测试相应端口的灵敏度。测试配置图测试步骤:1)按照配置图连接测试系统。2)2.设置相应光端口强制发光。3)C.建立一个STM-N和STM-1之间的双向交叉连接。4)D.设置测试仪表。确认无误码。5)E.增加可调衰减器数值,到测试仪表出现误码为止,减少可调衰减器数值,到测试仪表误码消失为止。6)F.反复调节可调衰减器,确认准确的衰减器数值。7)G.用光功率计测试灵敏度数值。E.U.T.STM-1OUTSTM-NINSTM-NOUTSTM-1INSDH分析仪OpticalAttenuatorndBlaiyiED01ONDAlcatelShanghaiBell5/131.3光接口最小过载光功率测试说明:本测试用于测试相应端口的最小过载光功率。测试配置图:测试步骤:1)按照配置图连接测试系统。2)设置相应光端口强制发光。3)建立一个STM-1和STM-1之间的双向交叉连接。4)设置测试仪表。确认无误码。5)减少可调衰减器数值,到超过期望值,确认测试仪表无误码。6)观察1分钟。注:根据SDH仪表和设备输入功率范围,在它们之间要加入适当衰耗器。E.U.T.STM-1OUTSTM-NINSTM-NOUTSTM-1INSDH分析仪OpticalAttenuatorlaiyiED01ONDAlcatelShanghaiBell6/131.4光接口参数光口参数光口类型工作窗口发光功率过载点灵敏度最大最小S-1.11261-1360-8-15-8-28L-1.11280-13350-5-10-34L-1.21480-15800-5-10-34L-1.2JE11350-15600-4-10-34S-4.11274-1356-8-15-8-28L-4.11280-1335+2-3-8-28L-4.21480-1580+2-3-8-28L-4.2JE1530-1560+2-3-8-32S-16.11270-13600-50-18L-16.11280-1335+2-2-8-27L-16.21500-1580+2-2-8-28L-16.2JE11530-1560+41-9-29L-16.2JE21550-1560+2-3-9-29I-16.11266-1360-3-10-3-1816*L.16.2JE6400ps/nm+2+2-10-2316*L.16.2JE12800ps/nm-3-3-10-23I-64.11290-1330-1-6-1-11S-64.2b1530-1565+2-1-1-14L-64.2b1530-1565+12+10-1-14laiyiED01ONDAlcatelShanghaiBell7/131.5SDH设备的STM-N输入口的抖动容限测试测试说明:目的是测试SDH设备输入口应容忍的最低水平的相位噪声。测试配置图:测试设备测试步骤:1)按照配置图连接测试系统。2)设置相应的光端口强制发光。使测试设备与测试仪表同步。3)在SDH分析仪上进行对应的设置,在表中添入测试接果。STM-1e输入抖动容限测试标准:频率f(Hz)抖动幅度(峰峰值)10f19.338.9UI(0.25us)19.3f500750f-1UI500f3.3k1.5UI3.3kf65k4.9x103f-1UI65kf1.3M0.075UIE.U.T.STM-NOUTSTM-NIN锁定STM-NOUTSTM-NIN锁定SDH分析仪OpticalAttenuatorSDH网络时钟已锁定laiyiED01ONDAlcatelShanghaiBell8/131.6SDH设备的抖动产生测试测试说明:目的是测试SDH设备在锁定一个无抖动输入信号时,或工作于保持方式或内部时钟自由振荡方式时,STM-N输出口的抖动量。测试配置图:待测设备测试步骤:1)按照配置图连接测试系统。2)设置相应的光端口强制发光。3)在无输入抖动的情况下,以60秒时间间隔测试STM-N输出接口的固有抖动值。表2.5SDH网络接口最大容许输出抖动速率网络接口限值测量滤波器参数(kbit/s)B1UIppB2UIppf1f3f4f1-f4f3-f4STM-1(电)1.5(0.75)0.075(0.075)500Hz65kHz1.3MHzSTM-1(光)1.5(0.75)0.15(0.15)500Hz65kHz1.3MHzSTM-4(光)1.5(0.75)0.15(0.15)1kHz250kHz5MHzSTM-16(光)1.5(0.75)0.15(0.15)5kHz1MHz20MHzSTM-64(光)1.5(0.75)0.15(0.15)20kHz4MHz80MHz注:STM-11UI=6.43nsSTM-41UI=1.61nsSTM-161UI=0.40nsSTM-641UI=0.10nsE.U.T.STM-NOUTSTM-NINSTM-NOUTSTM-NIN锁定SDH分析仪OpticalAttenuatorlaiyiED01ONDAlcatelShanghaiBell9/131.7SDH设备的映射抖动测试2Mb/s映射抖动测试说明:目的是测试在SDH设备输入信号无指针活动时,PDH输出口的抖动。参考ITU-TG.783(table10.1/G783).测试配置图:、测试步骤:1)按测试配置图连接设备和测试仪表。2)设置设备待测2Mb/s电接口信号与STM-1信号在矩阵中的交叉连接,使仪表无误码。3)设置仪表与设备同步。4)选择适当的滤波器,测试2Mb/s电接口的抖动值。5)在SDH信号中加入频偏,50ppm,15ppm,10ppm。6)重复4,5操作,记录最大的抖动峰-峰值。7)STM-1电接口:输入抖动容限及固有抖动-48/-60Volt20%2Mb/sDistrib.supplyE.U.T.2MbitOUT75/120STM-1INSTM-1OUT2MbitIN75/120STM-1PDHSectionSDHSectionSyncsourcelaiyiED01ONDAlcatelShanghaiBell10/13单位:UI输入抖动容限输出抖动5003.3K65K1.3MLP+HP1LP+HP2≥1.5≥1.5≥0.075≥0.075≤0.50≤0.102048Kb/S:输入抖动容限及固有抖动单位:UiP-P输入抖动容限输出抖动202.4K18K100KLP+HP1LP+HP21.51.50.20.20.350.0751.8SDH设备的结合抖动测试2Mb