EXPRESS 8-PORT MUX
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5. Troubleshooting
5.1 Possible Problems
If you experience problems with your Express 8-Port Mux, follow the guidelines below.
1) Collect all information relevant to this application.
· Express 8-Port Mux serial numbers.
· Host type and operating system software level.
· Quantity, and type of peripheral devices.
· Interconnecting cable types and distances.
· Equipment environment.
· Interconnection diagrams.
2) Set up the application with all Multiplexors in one room interconnected with fiber optic jumpers. Verify the
application with a host port and a terminal.
3) Search through the common problems and possible causes provided in this chapter.
The Express 8-Port Mux front-panel power LED is off.
· Verify that the AC and DC connections are proper.
· Verify that the AC outlet is functioning correctly.
If the problem persists, observe the status of the external power supply’s LED and contact Technical Support.
The Express 8-Port Mux RX LED is off or flashing.
· Verify that the fiber optic connectors are properly connected.
· Verify that the fiber optic budget and distance has not been exceeded.
The Express 8-Port Mux TX LED is off.
· Contact Technical Support.
