Cabletron Systems F3 user manual Distance and Cable Type, Signal Quality Error SQE Test

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CHAPTER 1: INTRODUCTION

A fiber optic cable is connected to the transceiver through ST fiber optic ports on the FOT-F3. This provides an optical link to connect the device to the network.

1.3.2Distance and Cable Type

The FOT-F3 supports single mode fiber optic cable for sizes such as 8.3/125 m, 8.7/125 m, 9/125 m, and 10/125 m. You can also use multimode cable such as 62.5/125 m, but the signal distance will be much shorter.

The signal distance is dependent on the cable type and the overall system fiber optic budget. If the system budgets and timing constraints are met, then a distance of over five kilometers is possible with single mode cable. However, Cabletron Systems only supports a distance of 5 kilometers. If using 62.5/125 multimode cable, signal distance is about 2 km.

An AUI cable, up to 50 meters long, is used to connect an Ethernet device to the AUI port on the transceiver. The AUI cable must meet specifications for either IEEE 802.3 or Ethernet Version 1 or Version 2.

Signal Quality Error (SQE) Test

The FOT-F3 has a Signal Quality Error (SQE) Test Enable Switch that allows the enabling or disabling of the SQE (“heartbeat”) test function. The SQE test enables the FOT-F3 transceiver to generate a signal to ensure that the collision circuit and path are operational between the FOT-F3 and the Ethernet device attached to the AUI port of the transceiver.

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FOT-F3 USER’S MANUAL

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Contents FOT-F3 Fiber Optic Transceiver USER’S Manual Page FOT-F3 USER’S Manual FCC Notice DOC NoticeVcci Notice Declaration of Conformity Industrial EnvironmentContents Testing and Troubleshooting Using this Manual Chapter IntroductionConventions Overview of the FOT-F3Connections FOT-F3Signal Quality Error SQE Test Distance and Cable TypeLanview LEDs Lanview LEDsPWR Power SQE Signal Quality Error Test FunctionXMT Transmit RCV ReceiveFOT-F3 Setup, Example ApplicationMmac Getting Help Your email addressRelated Manuals Chapter Installation Requirements Network Design GuidelinesFiber Optic Requirements Installation Requirements AUI Cable RequirementsChapter Installation Unpacking the FOT-F3Connecting the FOT-F3 to the Network Setting the SQE SwitchConnecting the AUI Cable AUI Connection Connecting the Fiber Optic Cable Installation ST Connectors Surface Mounting the FOT-F3 Cable Support Installation Cable Strain Relief for Surface Mounted FOT-F3Cable Strain Relief for Non-Mounted FOT-F3 Surface Mounting the FOT-F3Cable Support Installation Installation Chapter Testing and Troubleshooting Installation CHECK-OUTTesting the Fiber Optic Link Segment Testing and Troubleshooting Testing the FOT-F3 Fiber Optic Transceiver Installation CheckoutUsing Lanview Lanview LEDs Optical Link OK LNK LED Collision CLN LEDSignal Quality Error SQE Test Function LED Receive RCV LEDTransmit XMT LED Power PWR LED Testing and Troubleshooting Appendix a Specifications Fiber Optic InterfaceAppendix a Specifications AUI Connector Power SupplySafety EnvironmentalAgency Approvals Physical