Cisco WS-G5484 Nota de instalação - Página 5

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Note

with IEEE standards. The IEEE found that link distances could not be met with certain types of

ﬁber-optic cable cores. The solution is to launch light from the laser at a precise offset from the

center, which is accomplished by using the mode-conditioning patch cord. At the output of the patch

cord, the LX/LH GBIC is compliant with the IEEE 802.3z standard for 1000BaseLX.

Note

should measure your cable plant with an optical loss test set to verify that the optical loss of the cable

plant (including connectors and splices) is less than or equal to this ﬁgure. The optical loss

measurement must

Handling a GBIC

GBIC handling guidelines follow:

•

GBICs are static sensitive. To prevent electrostatic discharge (ESD) damage, follow your normal

board and component handling procedures.

•

GBICs are dust sensitive. When storing a GBIC or when a ﬁber-optic cable is not plugged in,

always keep plugs in the GBIC optical bores.

•

The most common source of contaminants in the optical bores is debris picked up on the ferrules

of the optical connectors. Use an alcohol swab or Kim-Wipe to clean the ferrules of the optical

connector.

Installing a GBIC

Gigabit Ethernet switching modules can be shipped with or without GBICs installed.

Note

Perform the following steps to install a GBIC.

Step 1

Step 2

Step 3

The mode-conditioning patch cord (CAB-GELX-625 or equivalent) is required to comply

The WS-G5487 1000Base-ZX GBIC provides an optical power budget of 21.5 dB. You

be performed with a 1550 nm light source.

GBICs are hot-swappable in Gigabit Ethernet modules.

Remove the GBIC from its protective packaging.

Check the part number to verify that the GBIC is the correct type for your network (see

the "GBIC Description" section on page 2).

Grip the sides of the GBIC with your thumb and foreﬁnger and insert the GBIC into the

slot on the front panel of the Gigabit Ethernet switching module, as shown in Figure 2.

Note

GBICs are keyed to prevent incorrect insertion.

Gigabit Interface Converter Installation Note

Handling a GBIC