DATE: CONTRACTOR NAME: Johnson Controls Refrigeration and Air C onditioning
BUILDING/AREA LOCATION : REQUEST NO.: 000 SYSTEM :BURIED FIBER OPTIC SENSOR-PIDS WORK PACKAGE : CP 69 Item(s) to be Inspected: OTDR Test on Fiber Optic cables Comments Item ITEM FOR INSPECTION Subcon JCI OBI No. 1 Check the validity of the calibration certificate of the OTDR machine. Check that a long launch lead cable is used. This will allow the OTDR to settle down after the initial pulse and provides a reference cable for testing the first 2 connector on the cable. (Note: Always start w ith the OTDR set for the shortest pulse width for best resolution and a range at least twice (2) times the length of the cable you are testing.) Check that the each end face of connector of the 3 test cables is clean and free from dirt prior to plugin. Ensure that a launch lead cable is used to enable full 4 evaluation of the path Ensure to use correct mating adapter and fiber 5 connector (where applicable). Ensure that the Fiber optic cable has no active or 6 power light source connected on either end, before connecting the OTDR. Ensure that the set-up of OTDR is not set to auto7 configuration options enabled; else OTDR will struggle with the configuration of the FFT sensor. Ensure that all testing on the Micro strain systems is 8 performed at 1550 nm with fiber refractive index of 1.4682. Ensure the distance setting at the OTDR is set to a distance longer than the total expecte d length of 9 the cable. Inspection Checklist of Buried Fiber Optic Sensor - PIDS Doc.Ref.No. 25045-D2150-69-ITP-T-002 25045-D2150-69-ITP-T-002 NDIA Project: CP-69 PSSE
DATE: CONTRACTOR NAME: Johnson Controls Refrigeration and Air C onditioning
Ensure to set the pulse width setting as necessary to slightly increase the pulse width to allow for the excess losses from the start and end sensors. Ensure to test the Fiber Optic cable in both directions, first from the lead-in, then from the leadout. Check that the fiber loss result meets the recommended typical reading of 0.25dB/km and an increase margin of 0.02dB/Km is acceptable. Check that the fusion splices losses must be less than 0.05dB at a maximum. Check that the connector loss must be less than 0.5dB at maximum. Ensure to make record and or document in every test conducted.
