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The mode-conditioning patch cord is required to comply with IEEE standards. The IEEE found that link
Note
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 end of the patch cord, the GBIC-LX/LH is compliant with the IEEE 802.3z
standard for 1000BASE-LX.
Installation Prerequisites
This section describes safety and compliance guidelines you should observe before you install the GBIC
module or SFP module in your Gigabit Ethernet device.
Safety Guidelines
Before handling a GBIC module or SFP module, observe the following guidelines:
•
•
•
Warning
Class 1 laser product.
Warning
Class 1 LED product.
Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is
Warning
connected, avoid exposure to laser radiation and do not stare into open apertures.
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference, in which case users will be
required to correct the interference at their own expense.
Gigabit Interface Converter (GBIC) Module and Small Form-Factor Pluggable (SFP) GBIC Module Installation Information and Specifications
OL-5067-08
GBIC modules and SFP modules are static-sensitive. To prevent electrostatic discharge (ESD)
damage, follow your normal board- and component-handling procedures.
GBIC modules and SFP modules are dust-sensitive. When storing a GBIC module or SFP module
or when a fiber-optic cable is not plugged in, always keep plugs in the GBIC module or SFP module
optical bores. (See plug in
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 lint-free absorbent wipes to clean the ferrules of the
optical connector.
Figure
7.)
Installation Prerequisites
15
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