3com S27x User Manual

About the PathBuilder S24x, 26x, and 27x switch 

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The Federal Communications Commission (FCC) of the United States of America 
and the Industry and Science Canada (ISC) have published regulations that govern 
the allowable limits of emanation of radio frequency energy of computing devices 
and associated peripherals. These regulations are concerned with interference to 
radio communications, such as radio and television. The regulations require 
equipment for use in the United States or Canada to be labeled and to be 
accompanied by the following notice:

If this equipment causes interference to radio or television reception, which can be 
determined by turning the equipment off and on, you are encouraged to try to correct 
the interference by one or more of the following measures:

• Reorienting the receiving antenna

• Relocating the equipment with respect to the receiver

• Moving the equipment away from the receiver

• Plugging the equipment into a different outlet so that the equipment and 

receiver are on different circuits

If necessary, you should consult the dealer or an experienced radio/television 
technician for additional circuits.

You may find the following booklet prepared by the FCC helpful: How to 
Identify and Resolve Radio-TV Interference Problems. This booklet is available 
from the U.S. Government Printing Office, Washington, D.C. 20402, 
Stock No. 004-000-00345-4.

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 interference when 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 interference to radio communications.

This digital apparatus does not exceed the Class A limits for radio noise emissions 
from digital apparatus set out in the radio interference regulations of the ISC.

Operation of this equipment in a residential area is likely to cause interference in 
which case the user will be required to take adequate measures to correct the 
interference.

This product was verified under test conditions that include use of shielded DTE 
cable(s). Leased line cables with 1.5 turns through a ferrite cylinder were also used. 
Use of different cables will invalidate verification and increase the risk of causing 
interference to radio and TV reception.

You can obtain the proper cables from 3Com.