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2-2
Planning Installation
Writer:
Chris Seiter
Project:
Planning Installation
Comments:
299440-001
File Name:
2824_2.DOC
Last Saved On:
6/27/97 3:51 PM
CAUTION:
The power outlet must be a non-switched, three-pronged,
grounded outlet. Do not use a three-to-two pronged adapter at the outlet.
Doing so may result in electrical shock and/or damage to the hub and will
void your warranty.
Spatial Requirements
The hub dimensions are 2.5 x 17 x 13.5 inches, 6.4 x 43.6 x 34.6 cm (HxWxD).
Be sure to allow at least 2 inches (5.1 centimeters) on each side of the hub for
proper air circulation and cable connections.
Cable Requirements
The following information states the required cable type and distance
limitations for 10Base-T, 100Base-TX, and 100Base-FX.
10Base-T
The 10Base-T twisted-pair wiring you connect to the hub’s RJ-45 ports must
meet the following minimum specifications and requirements to ensure long-
term LAN reliability.
■
The wiring must be unshielded twisted-pair (UTP), Category 3 or better.
■
Two pairs of wiring are required.
■
The building codes may require different insulation materials.
■
The wire gauge should be between 18 and 26 AWG. (Most telephone
installations use 24-gauge wiring.)
■
UTP wire should meet the following requirements:
Solid copper
Nominal capacitance: less than 16 pF/ft
Nominal impedance: 100 Ohms
Nominal attenuation: less than 11.5 db