SECTION C

Mounting

8.THREAD THE CONNECTOR ONTO THE FIBER

Slide the crimp ring up the cable within 1/2" (13 mm) of the end of the jacket. Hold the cable in one hand directly behind the crimp ring and hold the connector in the other hand. Rest your hands on the table or against each other and carefully thread the connector straight onto the fiber. Slowly rotate the connector between thumb and forefinger in order to ease the funneling of the fiber into the guide hole of the ferrule (Fig. C8). Carefully observe that the fiber is moving through the ferrule while threading the connector. This ensures that the fiber hasn't broken during the mounting process.

While rotating the connector, maintain a continuous light inward pressure in order to assist entry alignment. Slowly slide the connector onto the fiber until the buffer seats at the base of the ferrule. The Kevlar must flare around the backbone of the connector (Fig. C9).

Once the buffer is seated, do not pull on the fiber. Keeping the fiber forward will ensure that the epoxy does not deposit anywhere inside the body of the connector. Hold the connector in place and carefully slide the crimp ring up over the Kevlar until the ring is seated with the back end of the connector (Fig. C10).

9.CRIMP THE RING ONTO THE CONNECTOR BACKBONE.

Make sure that the crimp ring is fully seated over the back of the connector. Hold the connector in place with your forefinger and middle finger. Be sure that the crimp cavity marked .190 completely covers the upper portion of the ring and crimp the ring to the connector, securing the Kevlar (Fig. C11).

Next, crimp the smaller diameter of the crimp ring to retain the cable's jacket. Use cavity .137 for 3.0 mm and .120 for 2.4 mm. Be careful not to pinch the cable between the jaws.

10.EXAMINE THE EPOXY BEAD

The correct epoxy bead height at the fiber should be between 2 to 4 fiber diameters (0.10" to 0.020") above the ceramic tip. If this is not the case, additional epoxy must be applied around the fiber base to build the bead to the proper height. A short piece of buffered fiber with about 1/4" (6 mm) of exposed fiber makes a good applicator.

To apply: Carefully deposit epoxy on the end of the ferrule through the opening in the load adapter using a short piece of buffered fiber .

Important: The outside diameter of the ceramic ferrule must be free of epoxy. Excess epoxy will adhere the load adapter to the ferrule during the curing process.

Fig. C8

Fig. C9

Fig. C10

Fig. C11

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3M FC, PC3 manual Thread the Connector Onto the Fiber, Crimp the Ring Onto the Connector Backbone, Examine the Epoxy Bead
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FC, PC3 specifications

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