3Com 3C94024 Getting Started Guide - Page 24

24 CHAPTER 3: CABLING COREBUILDER 9400 PORTS Figure 8 Cabling the GBIC Transceiver 0BASE TX TUS PACKET CONSOLE FAULT POWER 1000BASE (GBIC) 14 15 16 1000BASE (GBIC) 20 21 22 STATUS green = enabled, link OK flashing green = disabled, link OK off = link fail PCKT STAT 17 18 PCKT STAT 23 24 GBIC transceiver Fiber optic network cable Duplex SC connector 6 Attach the other end of the network fiber-optic cable to the network device that you want to connect. 7 Repeat steps 1 through 6 for additional GBIC ports. Connecting the LX Transceiver to MMF The LX transceiver supports a connection to multimode fiber using a conditioned launch cable. The conditioned launch cable consists of an offset mechanism on the transmit side of the cable that aligns the single-mode laser launch away from the center of the multimode fiber core, creating a transmission signal similar to typical multimode light-emitting-diode (LED) launches. This offset allows the transmission of LX signals over multimode fiber cable. You need a conditioned launch cable to complete the following procedure. To ensure optimal compatibility, performance, and regulatory compliance, use only conditioned launch cables that 3Com supports. For a list of currently supported launch cables, visit this 3Com Web site: http://www.3Com.com/gigabit_ethernet/gbics To cable a GBIC port to multimode fiber using an LX transceiver: 1 Read and follow the "Fiber Safety Precautions" on page 19 and the Caution at the beginning of "Cabling Gigabit Ethernet Ports" earlier in this chapter. 2 Insert a GBIC LX transceiver into a GBIC port until it clicks into place, as shown in Figure 6. 3 If you haven't already done so, remove the SC connector cover from the transceiver, as shown in Figure 7.