Using OP915, it is possible to quickly and accurately measure the insertion loss (IL) and return loss (RL) of fiber optic components. The return loss test is measured using a "wrap free" method, which means there is no need for matching paste or wrapping at the far end of the optical cable. The insertion loss is measured by using a stable transmitter with back loss as the light source, combined with an accurate optical power meter. Like other OptoTest devices, the OP915 supports a USB interface. The OPL-PRO software integrates this instrument into the data collection process of an efficient production line, Automatically write all data results into an Excel formatted spreadsheet.