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Cleaning the Fiber-Optic Components

While you install the TX Matrix router or replace a fiber-optic array cable, small deposits of oil, dust, and debris can enter the TX-SIB and T640-SIB fiber-optic array adapters, the fiber-optic array cable connectors, and the loopback connectors and adapters used to test the optical connections. These deposits can cause loss of light, reducing signal power and causing intermittent problems with the optical connection.

We recommend using both of the following methods to clean the fiber-optic components:

• Use lint-free swabs and isopropyl alcohol (99 percent).

  This method is effective for removing most particles of contamination and dust, but will leave small pieces of contamination on the optics.

  Note: Common retail outlets generally do not sell 99 percent isopropyl alcohol. Do not use isopropyl alcohol with a concentration less than 99 percent.

• Use a dry cloth cleaning tool, such as USConec's In-Bulkhead-Connector (I.B.C.) Cleaning Tool (see Figure 1).

  Figure 1: Cleaning Tool and Adapter

  

  This tool uses a dry cloth to remove dust and oil from the fiber optics. It is safe and effective for removing any contaminants that were left after cleaning with a lint-free swab and isopropyl alcohol (99 percent).

Note: As part of your routine maintenance, we recommend that you clean all exposed fiber-optic components each time you disconnect and reconnect a fiber-optic cable.

If the state of any link between a TX-SIB and a T640-SIB is incorrect, we recommend that you clean the corresponding TX-SIB and T640-SIB fiber-optic array adapters and the fiber-optic array cable connectors on the connecting fiber-optic array cable.

1. Bring the interface offline and disconnect the fiber-optic array cable between the TX-SIB and T640-SIB as described in Removing a TX Matrix Fiber-Optic Array Cable.
2. Clean the TX-SIB and T640-SIB fiber-optic array adapters and the fiber-optic array cable connectors as described in Cleaning the TX Matrix and T640 Fiber-Optic Components Overview.
3. Connect the fiber-optic array cable between the TX-SIB and T640-SIB and bring the interface online as described in Installing a TX Matrix Fiber-Optic Array Cable.
4. If the state of any link between a TX-SIB and a T640-SIB is still incorrect, contact your customer support representative.

Cleaning with Alcohol and Swabs

To clean the fiber-optic components using lint-free swabs and isopropyl alcohol (99 percent):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Bring the corresponding interface offline and disconnect the fiber-optic array cable from the TX-SIB or T640-SIB as described in Removing a TX Matrix Fiber-Optic Array Cable.

   Warning: Do not look directly into a fiber-optic array adapter or a connector at the end of a fiber-optic array cable attached to an adapter. The fiber optics emit laser light that can damage your eyes.

3. Moisten the tip of a lint-free swab with isopropyl alcohol (99 percent).
4. If you are cleaning a TX-SIB or T640-SIB fiber-optic array adapter, use your fingers to hold open the dust shutters.
5. Gently wipe the eight sets of optics within the adapter or connector with the swab. Do not touch the optics because the oil from your finger will contaminate them. Take care not to snag the swab on the ferrules because particles could be left behind.
6. Moisten the tip of another lint-free swab with isopropyl alcohol (99 percent).
7. Gently clean the area between and around the optics within the adapter or connector.