FOA CFOS/C case studies
FOA CFOS/C · Put your knowledge to work in context.
The FOA CFOS/C is a specialist certification in communications cabling offered by The Fiber Optic Association, an international non-profit educational association chartered to promote professionalism in fiber optics through education, certification and standards. The FOA is best known as the certifying body for the nearly 100,000 FOA-certified fiber optic technicians who build worldwide networks, and it also offers specialist CFOS credentials in areas such as testing and design. The FOA CFOS/C case studies are 5 cases and about 3,836 words.
11.2 km 10G Link: Multimode Bid vs. Single-Mode Reality
A regional contractor is bidding a 1.2 km 10 Gigabit Ethernet link between an administration building and a new warehouse. The route uses existing outdoor duct with three handholes and an entrance conduit at each end, and the customer expects service in six weeks.
773 words, about 4 min2Hospital Fit-Out: Plenum, Conduit Sharing, and a Nine-Day Deadline
Tenant improvement on the third floor of a hospital: 48 new fiber-to-the-desk outlets, each a 55 m run of 6-strand OM4 from a telecommunications room to a patient-room media panel. The ceiling above the corridor is a return-air plenum and the corridor wall is a 1-hour rated assembly.
778 words, about 4 min3550 m Underground Pull: Tension, Cold, and a Visible Defect Next Door
On an underground campus route, a crew is ready to pull 550 m of 24-count loose-tube single-mode cable into a 2 in. The route leaves a handhole, passes two sweeping 90-degree bends and enters a building through a 4 in.
812 words, about 4 min48.4 km 10GBASE-LR Acceptance: Passing Test, Failing Design
A consultant is asked to accept a newly installed 8.4 km single-mode link between two campus buildings, operating 10GBASE-LR at 1310 nm. The as-built shows 8.4 km of OS2 outdoor cable, five fusion splices in two handhole closures, and three patch panels (one at each end plus one mid-span in a building), each with a mated LC pair at both sides of the panel, for six mated connector pairs in the channel.
737 words, about 4 min5Campus Backbone Design/Build: 25-Year Life, 16-Week Lead Time, Late Change
A university asks for a design/build proposal for a campus backbone connecting five buildings to a core data center, with a 25-year design life. The route uses an existing duct bank with two spare 4 in.
736 words, about 4 min