SECTION C

Mounting

1.INSPECT THE CONNECTOR

Before mounting, hold the connector up to a light to ensure that the capillary hole of the ceramic ferrule is clear. If the hole is obstructed, blow it clear with air or use a piece of stainless steel wire supplied with the kit. To clear simply insert a wire through the back end of the connector so that the wire forces any debris through the front end of the ceramic ferrule (Fig. C1).

2.MULTIMODE CONNECTOR MOUNTING

The 125 ϑm size connector will fit standard 125 ϑm multimode fibers. Since dry fitting is therefore not necessary, advance to C3 in this section.

For 140 ϑm size fibers contact your local 3M sales representative.

SINGLE-MODE CONNECTOR FITTING

In order to achieve the lowest attenuation, it is important to dry fit single-mode connectors onto individual fibers.

Single-mode connectors are available in three closely toleranced ferrules sizes for mounting on single-mode fiber. Refer to page 4 for connector identification.

Select a 125 ϑm size connector. Line up the connector straight with the fiber and thread it onto the fiber while slightly rotating the connector between thumb and forefinger (Fig. C2). Do not try to force the connector onto the fiber. If the ferrule is too tight, the fiber will begin to buckle. If this is the case, carefully remove the 125 ϑm size and select a 126 ϑm size connector. Check to see that the ferrule hole is clear and dry fit. If the 126 ϑm size is too tight then a 127 ϑm connector should be used. If the connector cannot be threaded onto the fiber, re-inspect the fiber and the connector. Re-clean if necessary.

Note: At times when fitting connectors, a fiber particle may become lodged in the ferrule. In order to clear the ferrule it may be necessary to insert a stainless steel wire through the front of the ferrule and push the fiber out through the rear. Be sure to blow the connector clean after using the wire.

Slide the correct size connector all the way onto the fiber until the buffer bottoms against the ferrule. At this point, there should be no more than 1/16" (2 mm) space between the end of the cable and the back end of the connector (Fig. C3). After the fit is confirmed, carefully remove the connector from the fiber and place the fiber in the curing stand.

3.INSTALL THE LOAD ADAPTER ONTO THE CONNECTOR

After the connector has been fitted, insert it into the load adapter (Fig. C4) and place the connector in the stand with its matching fiber.

Fig. C1

Fig. C2

Fig. C3

Fig. C4

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3M FC, PC3 manual Section C, Mounting
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FC, PC3 specifications

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