3Com SWITCH 4050, Getting Started Manual

Page: 29 / 86

GBIC Operation 29
To access the latest list of approved GBIC transceivers for the Switch on
the 3Com Corporation World Wide Web site, enter this URL into your
internet browser:
http://www.3com.com
The URL is case sensitive.
Inserting a GBIC
Transceiver
To be recognised as valid, the GBIC transceiver must have the following
characteristics:
■
1000BASE-SX, 1000BASE-LX or 1000BASE-LH70 media type:
■
1000BASE-SX GBIC transceiver
Use this transceiver to connect the Switch directly to a multimode
fiber-optic cable.
■
1000BASE-LX GBIC transceiver
Use this transceiver to connect the Switch directly to a single-mode
fiber-optic cable or to multimode fiber using a conditioned launch
cable.
■
1000BASE-LH70 GBIC transceiver
Use this transceiver to connect the Switch directly to a single-mode
fiber-optic cable or to multimode fiber using a conditioned launch
cable.
■
Fiber SC connector
■
Type 4 GBIC with internal EEPROM fitted.
If the GBIC transceiver is faulty, it will not operate within the Switch. See
“Solving Hardware Problems” on page 54 .
Use of non-3Com GBICs is not recommended. If the GBIC transceiver is
invalid it will not be recognised by the Switch.
Use the following sequence of steps to activate the GBIC ports:
1 Orient the transceiver so that the fiber-optic duplex subscriber connecter
(SC) is toward you, as shown in
Figure 6 .
2 Gently slide the transceiver into the GBIC port until it clicks into place.