Splicing Machine Message Error

FAT FIBER

Received splicing machine message error as "FAT FIBER" as shown in the captured photo below. The fiber type was of multimode 62.5 micron.

The "FAT FIBER" error message was actually a very high loss splicing loss. Using power meter & light source the final loss was measured more than 15dB for a short multimode fiber optics distance of 100 meters. A visual fiber optics fault locator was used to verify the high loss which can been seen clearly at the splicing point between fiber optics pigtails and cable.

The estimation given by the splicing machine is only an indication of splicing loss. To get accurate splicing loss readings,one should use OTDR.