Allied Telesis Converteon AT-CV5000- User Manual
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Appendix B

Cleaning Fiber Optic Connectors

The fiber optic connector consists of a fiber optic plug and its adapter. The end of the fiber optic cable is held in the core of the ferrule in the plug. Light signals are transmitted through the core of the fiber. Even minor smudges or dirt on the end face of the fiber, completely invisible to the naked eye, can disrupt light transmission and lead to failure of the component or of the entire system. Therefore, it is of utmost importance to clean all fiber optic connectors before use.

Figure 80 shows the ferrule in an SC connector.

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Ferrule

Figure 80. Ferrule in an SC Connector Plug

Figure 81 shows part of the end face of an unclean and clean ferrule.

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Unclean Clean

Figure 81. Unclean and Clean Ferrule

This appendix provides the following procedures

“Using a Cartridge-Type Cleaner” on page 110

“Using a Swab” on page 112

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Appendix B: Cleaning Fiber Optic Connectors

Using a Cartridge-TypeCleaner

Fiber optic cartridge cleaners are available from many vendors and are typically called “cartridge cleaners,” as shown in Figure 82.

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Figure 82. Cartridge Cleaner

Note

Do not use compressed air or aerosol air to clean a fiber optic connector.

To clean a fiber optic connector using a cartridge cleaner, perform the following procedure.

1.With one hand, hold the cartridge cleaner and push the lever on the cleaning cartridge in the direction of the arrow to expose the cleaning surface, as shown in Figure 83.

2.Place the ferrule tip on the exposed cleaning surface and rub the ferrule in a downward direction, as shown in Figure 83.

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Figure 83. Rubbing the Ferrule Tip on the Cleaning Surface

Note

Rub the ferrule tip on the cleaning surface in one direction only.

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AT-CV5000Media Converter Chassis Installation Guide

3.When you reach the end of the cleaning surface, pick up the ferrule tip, rotate and place it at the top and rub downwards at least 2 times.

Caution

Failing to pick up the ferrule tip when you reach the bottom of the cleaning surface can result in static electricity that can damage the fiber optic cable.

4.If desired, repeat steps 1 and 2.

5.If a fiber inspection scope is available, use the scope to inspect the ferrule end face to make sure that it is clean.

6.Reconnect the cable to the port or protect the ferrule tip with a dust cap.

Note

Always keep a dust cap on a fiber optic cable when it is not in use.

Note

Do not touch the end face of the ferrule in the connector.

Warning

Do not look directly at the cable ends or inspect the cable ends with an optical lens when the cable is connected at the other end.

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Appendix B: Cleaning Fiber Optic Connectors

Using a Swab

Specially treated swabs (stick cleaners) are available for cleaning inside connector adapters or hard-to-reachferrule tips. These swabs, often referred to as “lint free” or “alcohol free” swabs, are available from many vendors, as shown inFigure 84. Stick cleaners are available in both 2.5 mm and 1.25 mm sizes for use on SC and MU connectors respectively.

Note

NEVER use a household cotton swab and/or alcohol to clean a fiber optic connector. This may leave a residue on the ferrule tip.

Figure 84. Lint-FreeandAlcohol-FreeSwabs

Note

Do not use compressed air or aerosol air to clean a fiber optic connector.

To clean a recessed ferrule using a swab, perform the following procedure.

1.Insert the swab into the adapter as shown in Figure 85 and rub the ferrule tip with the swab.

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Figure 85. Cleaning a Recessed Ferrule

2. If desired, repeat step 1.

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AT-CV5000Media Converter Chassis Installation Guide

3.If a fiber inspection scope is available, use the scope to inspect the connector to make sure that it is clean and to check for scratches, pits, or other problems that may affect performance.

Note

Always keep a dust cap on a fiber optic cable when it is not in use.

Warning

Do not look directly at the cable ends or inspect the cable ends with an optical lens when the cable is connected at the other end.

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Appendix B: Cleaning Fiber Optic Connectors

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