3Com 4924 Getting Started Guide - Page 30

Inserting a GBIC Transceiver

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30 CHAPTER 2: INSTALLING THE SWITCH 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 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 55. 3Com recommends that you only use GBICs supplied by 3Com. 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 Hold the transceiver so that the fiber connector (SC) is toward you and the product label is visible, as shown in Figure 11. 2 Gently slide the transceiver into the GBIC port until it clicks into place. CAUTION: GBIC transceivers are keyed and can be properly inserted only one way. If the transceiver does not click when you insert it, remove it, turn it over, and reinsert it.

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30
C
HAPTER
2: I
NSTALLING
THE
S
WITCH
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:
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 55
.
3Com recommends that you only use GBICs supplied by 3Com. 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
Hold the transceiver so that the fiber connector (SC) is toward you and
the product label is visible, as shown in
Figure 11
.
2
Gently slide the transceiver into the GBIC port until it clicks into place.
CAUTION:
GBIC transceivers are keyed and can be properly inserted only
one way. If the transceiver does not click when you insert it, remove it,
turn it over, and reinsert it.