Cabletron Systems HubSTACK SEHI-34 User Manual

Also see for HubSTACK SEHI-34: Addendum

Contents

CONNECTING TO THE NETWORKPage 4-6• The physical communication link consists of two strands offiber optic cabling: the Transmit (TX) and the Receive (RX). TheTransmit strand from the applicable port on the module will beconnected to the Receive port of a fiber optic Ethernet device atthe other end of the segment. For example, TX of the applicableport on the module will go to RX of the other fiber optic device.The Receive strand of the applicable port on the module will beconnected to the Transmit port of the fiber optic Ethernetdevice. For example, RX of the applicable port on the modulewill go to TX of the other fiber optic device.We recommend that you label the fiber optic cable to indicatewhich fiber is Receive and which is Transmit. When you buyfiber optic cable from Cabletron Systems, it is labeled so that:at one end of the cable, one fiber is labeled 1, and the other fiberis labeled 2. This pattern is repeated at the other end of thecable. If you did not purchase your cable from CabletronSystems, be sure you label your cable as described above.Caution: Do not touch the ends of the fiber optic strands, anddo not let the ends come in contact with dust, dirt, or othercontaminants. Contamination of the ends can cause problems indata transmissions. If the ends become contaminated, cleanthem with alcohol using a soft, clean, lint free cloth.To connect a fiber optic link segment to an EPIM-F1, EPIM-F2, orEPIM-F3:1. Remove the protective plastic covers from the fiber optic ports onthe applicable port on the module and from the ends of theconnectors on each fiber strand.2. Attach the fiber labeled 1 to the applicable receive port, labeled RX,on the module. See Figure 4-4.