There are two models in the RSO-50 series: RSO-50 and RSO-51.OTDR fiber optical tester provides wavelength of 1310/1550nm and dynamic range of 26/24dB,the max test distance 150km. The OTDR fiber tester can analyzes the curve automatially,touch screen zoom or move curves operation.The tested results are displayed in the form of a list.Event list clearly reflects the type of event,distance,loss,decay,reflection. Shortest event dead zone (1.6m) and attenuation dead zone (8m). Save the current one or more curve trajectory graphs ,creat trace reports to the storage path.SOR standard file format PDF/EXCEL. 5.4 inch IPS touch screen OTDR tester,1920x1152 resolution.Optical fiber tools widely used in FTTX,optical network engineering construction.