This hands-on approach meant that a technician who mastered the F-50 had a deep understanding of the physics of fiber splicing.
After a splice, the F-50 shows loss and angle. If it's high (>0.05dB), you can press a button to re-splice the exact same fibers without re-cleaving—the machine re-arcs them. This salvages many borderline splices in the field. sumitomo f-50