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Netelligent 2008/2016 10Base-T Repeater User Guide
Writer:
Chris Seiter
Project:
Netelligent 2008/2016 10Base-T Repeater User Guide
Comments:
185814-003
File Name:
2000_2.doc
Last Saved On:
7/15/96 10:10 AM
Twisted-Pair (UTP/STP) Wire Requirements
The twisted-pair wiring you use to connect the repeater's RJ-45 ports must meet
the following minimum specifications and requirements to ensure long-term
LAN reliability.
■
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 10Base-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.