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                        GBIC Transceiver 
Installation Guide
For 3Com Gigabit Interface Converter (GBIC) Transceivers
Description The Gigabit Interface Converter (GBIC) ports on your system connect to 
Gigabit Ethernet networks through a GBIC transceiver (Figure 1), 
providing a high-speed connection over fiber-optic or copper cable. The 
transceiver connects to the network using a fiber-optic duplex subscriber 
connector (SC) or a RJ-45 connector. You can remove and replace the 
transceiver with the system on (which i
                    
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                        2 GBIC Transceiver Installation Guide 1000BASE-SX GBIC The 1000BASE-SX GBIC transceiver supports a direct connection to  Transceivers 62.5-micron or 50-micron multimode fiber-optic cable.  Table 1 shows the transmission ranges for each connection. Table 1   1000BASE-SX GBIC Multimode Transmission Ranges Diameter Modal Bandwidth Transmission Range  Fiber Type (microns) (MHz*km) in meters (feet) Multimode 62.5 160 2 – 220 (6.6 – 721.8) Multimode 62.5 200 2 – 275 (6.6 – 902.3) Multimode 50 400 2 – 
                    
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                        GBIC Transceiver Installation Guide 3 Safety Precautions Be sure to follow all safety precautions when you replace a GBIC  transceiver in the system. To avoid electric shocks and burns to yourself  and damage to the equipment, read and follow these warnings: WARNINGS: When the system is on:   Never insert a metal object such as a screwdriver or a finger with  jewelry into open module slots.   Do not touch any connections inside the chassis with your hands or  fingers. Fiber Safety Precautions Th
                    
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                        4 GBIC Transceiver Installation Guide Inserting the Before you connect the system to the Gigabit Ethernet network, first  Transceiver insert the transceiver into the GBIC port on the system, as described in  this section. The procedure is similar for all relevant chassis or modules. To ensure optimal performance, compatibility, and regulatory compliance,  use only GBIC transceivers that 3Com supports. For a list of GBIC devices  that are qualified for the 3Com products see this 3Com Web site: ht
                    
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                        GBIC Transceiver Installation Guide 5 CAUTION: GBICs are keyed and can be inserted only one way. If the GBIC  does not click when you insert it, remove the GBIC, turn it over, and  reinsert it. Removing the Transceiver To replace an existing GBIC transceiver, compress the side tabs and gently  pull the transceiver out of the port. Troubleshooting After you insert the GBIC transceiver into the port, the system software  Transceivers verifies the transceiver operation. If you should experience pro
                    
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                        6 GBIC Transceiver Installation Guide Meaning The transceiver, which connects to the module host board through a  20-pin connector is not seated properly, and a clean connection  cannot be established. Corrective action To correct this problem, completely remove the transceiver and then  reinsert it. If the problem persists, contact 3Com Technical Support.  For contact information in the United States and Canada, call  1-800-NET-3COM. For the number to call in other locations, visit the  3Com We
                    
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                        GBIC Transceiver Installation Guide 7 If the system detects a transceiver that 3Com does not support, it sets the  port type to Unqualified GBIC, displays a short description, (Unappr.GBIC),  and captures the error in the event log. WARNING  The GBIC in Port xx is NOT approved by 3Com & may violate electromagnetic emission  or safety requirements for your country. Refer to 3Com's web page  (www.3com.com/gigabit_ethernet/gbics) for our current approved list. The following informational message is
                    
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                        3Com Corporation LIMITED WARRANTY 3Com GBIC Transceivers HARDWARE 3Com warrants to the end user (“Customer”) that this hardware product will be free from defects in workmanship  and materials, under normal use and service, for one (1) year from the date of purchase from 3Com or its authorized  reseller. 3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to repair the defective  product or part, deliver to Customer an equivalent product or part to replace t
                    
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                        WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR BREACH OF  THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S  OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE  AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR  BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF  MER
                    
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                        10 GBIC Transceiver Installation Guide