3Com 3C780 User Guide - Page 5

This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402.

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WARNING: This equipment (3C781, 3C782, 3C783) 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 particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: s Reorient or relocate the receiving antenna. s Increase the separation between the equipment and receiver. s Connect the equipment into an outlet on a circuit different from the one which the receiver is connected to. s Consult the dealer or an experienced radio/TV technician for help. The user may find the following booklet prepared by the Federal Communications Commission helpful: The Interference Handbook This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402. Stock No. 004-000-00345-4. NOTE: In order to maintain compliance with the limits of a Class B digital device, 3Com requires that you use quality interface cables when connecting to this device. Changes or modifications not expressly approved by 3Com could void the user's authority to operate this equipment. Suggested cable types are: s Thin Ethernet (50 ohm) for BNC connections: 3C530-xxx or equivalent s Thick Ethernet (50 ohm) for AUI connections: 3C120-xxx or equivalent s For UTP and STP connections: Unshielded twisted-pair (100 ohm): - Level 3 LAN and high speed data cable. Example, Anixter® CM-00424BAG-3 or equivalent. - Level 4 extended distance LAN cable. Example, Anixter® CM-00424BAG-4 or equivalent. Shielded twisted-pair (100 ohm): - Level 5 data grade media cable. Example, AT&T® type 2061, 1061, or equivalent. Shielded twisted-pair (150 ohm): - Suggested cable type IBM® type 1, specification no. 4716748, type CL2, CM or MP, or equivalent. WARNING: This equipment (3C784) 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 in a commercial 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. 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 the user's own expense. Changes or modifications not expressly approved by 3Com could void the user's authority to operate this equipment. v

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v
WARNING:
This equipment (3C781, 3C782, 3C783) 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 particular installation.
If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
■
Reorient or relocate the receiving antenna.
■
Increase the separation between the equipment and receiver.
■
Connect the equipment into an outlet on a circuit different from the one which the receiver is connected to.
■
Consult the dealer or an experienced radio/TV technician for help.
The user may find the following booklet prepared by the Federal Communications Commission helpful:
The Interference Handbook
This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402.
Stock No.
004-000-00345-4.
NOTE:
In order to maintain compliance with the limits of a Class B digital device, 3Com requires that you use
quality interface cables when connecting to this device.
Changes or modifications not expressly approved by
3Com could void the user’s authority to operate this equipment.
Suggested cable types are:
■
Thin Ethernet (50 ohm) for BNC connections:
3C530-xxx or equivalent
■
Thick Ethernet (50 ohm) for AUI connections:
3C120-xxx or equivalent
■
For UTP and STP connections:
Unshielded twisted-pair (100 ohm):
–
Level 3 LAN and high speed data cable.
Example, Anixter
®
CM-00424BAG-3 or equivalent.
–
Level 4 extended distance LAN cable.
Example, Anixter
®
CM-00424BAG-4 or equivalent.
Shielded twisted-pair (100 ohm):
–
Level 5 data grade media cable.
Example, AT&T
®
type 2061, 1061, or equivalent.
Shielded twisted-pair (150 ohm):
–
Suggested cable type IBM
®
type 1, specification no. 4716748, type CL2, CM or MP, or equivalent.
WARNING:
This equipment (3C784) 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 in a commercial 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.
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 the user’s own
expense.
Changes or modifications not expressly approved by 3Com could void the user’s authority to operate this
equipment.