3Com 5101T-FB-ST, 5101T-FB-SMA, 5101T-FB-FC manual Wire Sizes

Page 41

Shielding of individual signal or power pairs is not required because most V1.0 controllers and transceivers are DC-coupled. The overall AUI cable shield provides for shielding and grounding and is connected to pin 1 and the AUI connector shell.

In practice, most Ethernet V1.0 equipment uses version 2.0 cables due to cross-talk problems caused by the lack of individual shielding of the pairs in Version 1.0 cables.

Wire Sizes

The three versions of AUI cables also use differ- ent wire sizes for the signal and power pairs. Table 7 describes the wiring that each type of transceiver cable uses.

Page 33

Page 40 Page 42
Image 41
Page 40 Page 42
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 SpecificationsTransmit Power Transmit Power SpecificationsFiber Optic Cable Specifications Fiber Optic Cables CompatibilityAUI Specifications Attachment Unit Interface Specifications