3M PC3, FC manual Fig. F3

Page 17

SECTION F

Polishing Process for Single-mode Connector Return Loss >40dB

4.PERFORM THE 5 ϑm FINISH

While holding the polishing jig in your hand, insert the connector so that the ferrule end does not protrude past the bottom of the polishing jig. This is to ensure that the extended fiber from the ferrule will not be broken off below the epoxy level upon initial contact to the lapping film.

Note: The ferrule must be inserted straight into the jig hole. If the ferrule tip is wiggled upon entering, the composite jig may be damaged.

Note: If the connector does not fit easily into the jig, examine the sides of the ceramic ferrule for epoxy. Any excess epoxy can be removed with a razor blade.

While holding both the connector and the polishing jig in one hand, slowly place the jig on the lapping film and begin to polish in a figure 8 motion without applying pressure on the connector (Fig. F3). Light scratch marks should begin to appear on the acetate surface.

Continue to polish until the fiber is flush with the epoxy bead (approximately 6 figure 8's) (Fig. F4). Once the fiber is supported by the epoxy bead, begin applying light pressure on the connector while polishing in a figure 8 motion. Continue to polish on the 5 ϑm acetate until a thin layer of light blue color epoxy remains on the ceramic tip (Fig. F5). Stop when the outer edges of the epoxy layer start to break up and feather. This can be seen using the 7X jewelers loupe.

Note: Until familiar with the process from this point, inspect the remaining epoxy after each single figure 8 until a thin feathered edge remains. DO NOT REMOVE ALL OF THE EPOXY WITH THE 5 ϑm ACETATE.

Note: The 5 ϑm lapping acetate can be cleaned with isopropyl alcohol and blown dry for reuse. The sheet can be used to polish 2 to 4 connectors.

5.PREPARE TO PERFORM THE 1.5 ϑm FINISH

Using an isopropyl alcohol dampened lint-free cloth, clean the ferrule and the polishing jig. Blow both parts dry with compressed air.

Clean a sheet of the 1.5 ϑm diamond lapping acetate and place it shiny side down directly onto the clean polishing pad.

Fig. F3

Fig. F4

Fig. F5

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Image 17
Contents Instructions Contents Section a SC Connector FC/PC3 Connector Jacketed Cable Preparation Section BTurn the Oven on Prepare the Crimp ToolHold the Cable Securely CUT and Flare the Strength MembersProtect Prepared Fibers Buffer RemovalRemove the Stripping Collar Mounting Section CLoad the Syringe with Epoxy Prepare the Syringe and EpoxyAttach the Epoxy Dispensing TIP Inject Epoxy Into the Ceramic FerruleExamine the Epoxy Bead Thread the Connector Onto the FiberCrimp the Ring Onto the Connector Backbone Epoxy Curing Secure the Strain Relief BootScoring Section DCarefully Remove the Load Adapter Score the Fiber Detach the Scored FiberSection E Prepare the Polishing JIG and ConnectorFig. E2 Fig. E5 Final InspectionPrepare the Polishing Surface Section FPrepare the Polishing JIG Check the Ferrule Hole in the Polishing ToolFig. F3 Fig. F6 Perform the Final Polish Prepare to Perform the Final PolishSection G Final CleaningSection H Mounting Unjacketed/900 ›m Buffered FiberFig. H5 Crimp the Ring to the Connector and TubeConnector Assembly Connector Assembly and InstallationConnector Coupling Cleaning SectionSection 3M brand SC and FC/PC3 Epoxy Field Termination Kits Section J

FC, PC3 specifications

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