User guide

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Netelligent 1108 100Base-TX Repeater User Guide
Writer: Chris Seiter Project: Planning Hub Installation Comments: 185813-002/707085-001
File Name:MIC100_2.DOC Last Saved On:3/14/96 10:38 AM
■ The wiring must be shielded or unshielded twisted-pair (STP/UTP),
Category 5.
■ Two pairs of wiring are required.
■ Depending on building codes, different insulation materials may be
required. Plenum-rated or TEFLON-coated wiring may be required in
some areas.
■ 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
CAUTION: Never use gray satin station cable for connecting a repeater.
This flat cable, typically used for connecting telephones to wall jacks, is
incompatible with 100BASE-TX systems.
Straight-through twisted-pair cable is typically used to connect a repeater to a
server or workstation. In a straight-through connection, Pin 1 at the repeater
connects to Pin 1 at the server, Pin 2 at the repeater connects to Pin 2 at the
server, and so on. Figure 2-1 shows the locations of pins on a standard RJ-45
plug on a twisted-pair cable.