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Testing a Fiber-Optic Array Switching Plane Cable

 

Use a fiber-optic array loopback adapter (see Figure 1) that is shipped in the TX Matrix Plus tool kit to test the integrity of the fiber-optic array cables.

To test a fiber-optic array cable:

  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. Remove the dust cover from the loopback adapter and the fiber-optic array cable. Store the dust covers in a dust-free resealable plastic bag.
  3. Take the switching plane offline.

    See Taking a Switching Data Plane Offline in the TX Matrix Plus Router Hardware Guide.

  4. Bring the TXP-F13 SIB offline by pressing the ONLINE/OFFLINE button for the SFC.Warning

    Do not look directly into a fiber-optic array switching plane port or a connector at the end of a fiber-optic array switching plane cable connected to a port. The optics emit laser light that can damage your eyes.

  5. Disconnect the fiber-optic array switching plane cable from the port.
  6. Install a dust cover on the fiber-optic array switching plane port.
  7. Clean the fiber-optic array switching plane cable and loopback adapter.Caution

    During maintenance or replacement procedures, small deposits of oil, dust, and debris can enter the TXP-F13 SIB and TXP-T1600 SIB fiber-optic array switching plane ports, fiber-optic array switching plane cable connectors, and loopback connectors and adapters. We recommend that you clean the optics in these components immediately before connecting them.

  8. Align the loopback adapter with the cable connector, and carefully press it into the connector until it stops. The loopback adapter and the cable connector are keyed to ensure proper mating.
  9. Bring the TXP-F13 SIB online by pressing the ONLINE/OFFLINE button for the SFC.Warning

    Do not look directly into a fiber-optic array switching plane port or a connector at the end of a fiber-optic array switching plane cable connected to a port. The fiber optics emit laser light that can damage your eyes.

  10. Verify that the RxPWR LED for the fiber-optic array switching plane port is steadily lit green.
  11. If the RxPWR LED for a fiber-optic array switching plane port is lit steadily yellow or is not lit, bring the TXP-F13 SIB offline, remove the loopback adapter, and clean it and the fiber-optic array cable. After you have cleaned the fiber-optic array switching plane cable and the loopback adapter, repeat the procedure. If the RxPWR LED for a fiber-optic array switching plane port still does not steadily light green, contact your customer support representative for additional instructions. Do not proceed with the installation of the TX Matrix Plus router until you have spoken to your customer support representative.
  12. Remove a dust cover from the dust-free resealable plastic bag and reinstall it on the loopback adapter. Align the dust cover with the loopback adapter, and carefully press them together until they stop. The cover and the loopback adapter are keyed to ensure proper mating. Store the loopback adapter in the dust-free resealable plastic bag.
Figure 1: Fiber-Optic Array Switching Plane Loopback Connector and Loopback Adapter
Fiber-Optic Array Switching
Plane Loopback Connector and Loopback Adapter