H·4200 with live test is compact and easy to carry;4.3-inch high-definition touch screen,supports multi-touch and smooth operation.Internal integration OTDR,event map,split-wave OPM,red light,light source, flashlight,RJ45 sequence and other functions in one,to meet different occasions a variety of test needs.The OTDR function is standard with single wavelength and built-in efficient wavelength solator,which can carry out optical test on the link,with the minimum event blind area of 1.5m and the maximum measurement range of 100km.H-630 is used to measure the length,loss,connection quality and other parameters of the optical fiber.It can easily test the breakpoint,bend,and loss point of the optical fiber link.It is suitable for line maintenance and emergency repair testing by installation and maintenance personnel.