3Com 5101T-FB-SMA manual Transceiver Rear Panel, Fiber link transmit and receive SQE Test Ports

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Transceiver Rear Panel

The Transceiver rear panel contains the Fiber Optic (SMA, ST, or FC) connectors and four indi- cators (LEDs). The LEDs provide status for:

Fiber link (transmit and receive)

SQE Test

Ports

The LEDs can be On, Off, or Blinking. The num- ber of consecutive blinks before a longer pause on the STA (status) LED indicates the type of fail- ure detected on the link. For ease of interpreta- tion, a table is printed on the top panel of the transceiver to briefly describe the type of failure. This table is also repeated in greater detail in the Troubleshooting section later in this manual.

Refer to the Troubleshooting section later in this manual for a description of the LED blink sequences.

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Contents 10BASE-FB Transceiver Installation Guide Page VDE Class B Compliance Copyright Statement Table of Contents EEE Version Page Page Intended Audience PrefaceThis guide is divided into five sections Transceiver Top Panel Transceiver OverviewTransceiver Top Panel Switch Setting Description Transceiver DIP Switch SettingsTransceiver Front Panel Transceiver Front PanelFiber link transmit and receive SQE Test Ports Transceiver Rear PanelTransceiver Rear Panel Transceiver LED Descriptions Alternate Collision ModeSQE Test High Power PWRHalf Step Mode InstallationSite Preparation and Placement Unpacking Procedures Transceiver DIP Switch Default Settings Verifying Transceiver Switch SettingsPage Page Connecting to Ethernet V2.0 and Ieee 802.3 Controllers Connecting to Ethernet V2.0 and Ieee 802.3 Repeaters Connecting Fiber Cables Connecting the AUI Cable To verify physical link operation Verifying Physical Link OperationStatus LED TroubleshootingPage LED Troubleshooting Using the Status LEDsTroubleshooting Using the Status LEDs Troubleshooting Using the Status LEDs Troubleshooting Link Problems Excessive Collisions Troubleshooting System ProblemsLate Collisions and Failure to Defer Miscellaneous Errors Transceiver Cables Signal DifferencesVersion EEEWire Sizes Cable Type Signal Pair Power Pair Transceiver Cable Wire SizesCable Pinouts AUI Cable Pinout ChartCO-A Symptoms of Faulty Transceiver Cables Troubleshooting Transceiver CablesCauses of Fault Transceiver Cables Cable Recommendations SpecificationsGeneral Specifications General SpecificationsOptical Interface Specifications Optical Interface SpecificationsFiber Optic Cables Compatibility Transmit Power SpecificationsTransmit Power Fiber Optic Cable SpecificationsAUI Specifications Attachment Unit Interface Specifications