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Safety Recommendations
Cisco uBR904 Cable Modem Installation and Configuration Guide
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Following are guidelines for preventing ESD damage:
• If you use an ESD wrist strap or ankle strap, ensure that it makes good skin contact and
that the equipment end of the ESD strap is attached to an unfinished surface of the
Cisco uBR904 cable modem.
• Always place the Cisco uBR904 cable modem on an antistatic surface or in a static
shielding bag. If you are returning the item to the factory, immediately place it in a static
shielding bag.
FCC Requirements
For Class A Equipment
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 the user will be required to correct
the interference at his own expense.
For Class B Equipment
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
Caution For safety, periodically check the resistance value of the antistatic strap. The
measurement should be between 1 and 10 megohm.