GE DS2020ASSAG1 Differential expansion module

For fiber optic ports, verify that the LINK LED for each port is ON. If a LINK LED is OFF, do the following: ‰ Verify that the end-node connected to the port is powered ON and is operating properly. ‰ Check that the fiber optic cable is securely connected to the port on the switch and to the port on the end-node. ‰ ST and SC ports consist of two separate connectors, as shown in Figure 33 on page 65. Each connects to a separate fiber strand. One is for receiving data and the other is for transmitting data.

When connecting a fiber optic cable to a ST or SC port

 be sure that the receiver fiber connector is connected to the transmitter connector on the remote end-node, and the transmitter fiber connector is connected to the receiver connector on the remote node. ‰ Make sure that you are using the appropriate type of fiber optic cable and that the cable length does not exceed the allowed maximum distance. For an AT-8000 Series Switch, refer to ”Planning the Installation” on page 50. For an optional GBIC module, refer to the GBIC Installation Guide. For an optional fiber optic expansion module, refer to the Expansion Module Installation Guide

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