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ROBLEM

If you suspect a problem, carry out these steps before

contacting your supplier:

Ensure that the Module is correctly installed in the

Switch and that the three captive thumbscrews which

secure the Module are tightened with a suitable tool.

Ensure that the Switch in which the Module is fitted

is powered-up.

Ensure that the device at the far end of the link is

powered-up and operating correctly.

Ensure that all connectors on the fiber optic segment

are correctly engaged.

ECHNICAL

The SuperStack 3 Switch 4900 Series GBIC Module has

been designed to the following standards:

Functional

ISO 8802-3, IEEE 802.3-1998, IEEE 802.3ab, IEEE

802.1D, IEEE 802.1Q

Safety

UL 1950, EN 60950, CSA 22.2#950-93, IEC 60950, IEC

825-1, EN60825-1

EMC

CISPRR 22 Class A, EN55022 Class A, FCC Part 15

Subpart B Class A, ICES-003 Class A, VCCI Class A,

AS/NZS 3548 Class A, CNS 13438 Class A

Immunity

EN 55024

EGULATORY

FCC Statement

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

instructions, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause

harmful interference to radio communications, in which case the user will

be required to correct the interference at their own expense.

Information To The User

If this equipment does cause 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 the receiving antenna.

— Relocate the equipment with respect to the receiver.

— Move the equipment away from the receiver.

— Plug the equipment into a different outlet so that equipment and

receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced

radio/television technician for additional suggestions. The user may find

the following booklet prepared by the Federal Communications

Commission helpful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet is available from the U.S. Government Printing Office,

Washington, DC 20402, Stock No. 004-000-00345-4.

OLVING

PECIFICATIONS

OTICES

Clean the terminators by wiping them gently with a

clean tissue or cotton bud moistened with a little

ethanol. Dirty fiber terminators on the fiber optic

segment impair the quality of the light transmitted

through the cable.

For more general problem solving information, refer to

the documentation supplied with your Switch.

For information about technical support, refer to

"Technical Support"

Environmental

Operating Temperature

Storage Temperature

Operating Humidity

Power Consumption

Standards

In order to meet FCC emissions limits, this equipment must be used only

with cables which comply with IEEE 802.3.

CSA Statement

This Class A digital apparatus meets all requirements of the Canadian

Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du

Règlement sur le matériel brouilleur du Canada.

CE Statement (Europe)

This product complies with the European Low Voltage Directive

73/23/EEC and EMC Directive 89/336/EEC as amended by European

Directive 93/68/EEC.

You must only insert a 3Com approved GBIC transceiver into the

Module. These are listed in the "Approved GBIC Transceivers" section of

this User Guide.

VCCI Statement

BSMI Statement

page

0–40°C (32–104°F)

-10 to +70°C (14–158°F)

10–95% (relative humidity, non-condensing)

35 W (watts) maximum

EN60068 to 3Com schedule (Package

testing: paras 2.1, 2.2, 2.30, and 2.32.

Operational testing: paras 2.1, 2.2, 2.30 and

2.13).