78-5399-02 Rev. B0 Gigabit Interface Converter Installation Note Product Numbers: WS-G5484(=), WS-G5486(=), WS-G5487(=) This installation note provides the technical speciﬁcations and installation instructions for the Gigabit Ethernet Converters (GBICs) that you install in Catalyst 4000, Catalyst 5000, and Catalyst 6000 family Gigabit Ethernet ports that accept GBICs.
(See Table 4). WS-G5486 The WS-G5486, 1000BaseLX/LH interfaces fully comply with the IEEE 802.3z 1000BaseLX standard. However, their higher optical quality allows them to reach 10 km over single-mode ﬁber (SMF) versus the 5 km speciﬁed in the standard.
Safety Recommendations When shorter distances of single mode ﬁber are used, it may be necessary to insert an in-line optical attenuator in the link, to avoid overloading the receiver: • A 10 dB in-line optical attenuator should be inserted between the ﬁber optic cable plant and the receiving port on the WS-G5487 GBIC at each end of the link whenever the ﬁber optic cable span is less than 25 km.
Handling a GBIC The mode-conditioning patch cord (CAB-GELX-625 or equivalent) is required to comply 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.
Removing a GBIC Figure 2 Installing a GBIC WS-X5403 3 PORT GIGABIT ETHERNE T SWITCHIN G MODULE Plug Step 4 Slide the GBIC through the ﬂap covering the opening into the slot until you hear a click. The click indicates the GBIC is locked into the slot. Class 1 laser product Warning Warning...
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures: •...
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