XQ5210 is a standard optical power meter which is designed independently by OSCOM Technology.It utilizes InGaAs or Si light receiving material as photodetector,and integrates the functions of automatic range switchover,power measurement,insertion loss measurement,PDL measurement and RS232C interface.XQ5210 optical power meter can provide single channel benchtop light source.The XQ5220 possess the advantages of achieving high-speed measurement,coefficient correction,arbitrary wavelength adjustment and GPIB interface function,etc.It is stable,reliable,and very suitable for the testing of optical device factories and scientific research institutes and other applications.