Cabletron Systems SEHI-22 User Manual

Also see for SEHI-22: User guide Addendum

Contents

CHAPTER 4: CONNECTING TO THE NETWORK4-4SEHI USER’S GUIDEd. Check that the twisted pair connection meets dB loss and cablespecifications outlined in Chapter 2, Section 2.1.2.e. Check that the crossover switch is in the correct position.If a link is not established, contact Cabletron Systems Technical Support.4.1.3 Connecting a Fiber Segment to an EPIM-F1/F2/F3When connecting a fiber optic link segment to an EPIM-F1, F2, or F3keep the following in mind:• When connecting a fiber optic link segment with SMA 906connectors to an EPIM-F1 with SMA ports, ensure that halfalignment sleeves are in place on each connector. A full alignmentsleeve will damage the receive port. SMA 905 connectors do notneed alignment sleeves.• To connect a segment with ST connectors to an EPIM-F2/F3,remember that ST connectors attach to ST ports much like BNCconnectors attach to BNC ports. Insert the connector into the portwith the alignment key on the connector inserted into thealignment slot on the port. Turn the connector to lock it down.• The physical communication link consists of two strands of fiberoptic cabling: the Transmit (TX) and the Receive (RX). TheTransmit strand from the applicable port on the module connectsto the Receive port of a fiber optic Ethernet device at the other endof the segment. The Receive strand of the applicable port on themodule connects to the Transmit port of the fiber optic Ethernetdevice.• Label the fiber optic cable to indicate which fiber is Receive andwhich is Transmit. Fiber optic cable purchased from CabletronSystems is labeled so that one fiber is labeled 1, and the other fiberis labeled 2 at both ends of the cable. For cable not purchased fromCabletron Systems, label the cable as described above.