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3-6
Setting Up the Repeater
Writer:
Liz Fischer
Project:
Setting Up the Repeater
Comments:
268749-001
File Name:
749_3.doc
Last Saved On:
6/25/96 9:30 AM
❏
Nominal attenuation: Less than 11.5db
❏
Wire gauge between 18 and 26 AWG
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Maximum distance requirement 328 feet (100 meters). This distance
must include all cross-connect wire, wire in the walls, and any drop
cables from wall plates to workstations (see the next section to
determine the proper length). Maximum distances may be less for UTP
cable run underground, in conduit, or in large cable bundles.
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Wiring in good condition with the insulation not frayed or worn
IMPORTANT:
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-T systems.
The repeater is compatible with all AT&T Type D wiring (D-Inside wiring) and
AT&T PDS wiring. You can also use IBM Type 1 wiring (with two inside
conductors).
Two types of D-Inside wiring will work with the repeater:
DW8
Uses stranded wires and is relatively flexible; is best for shorter runs (less
than 50 feet, 16.2 meters) within the same room
D8W
Uses solid conductors and is less flexible; is best for longer runs through
ceilings and/or walls
A modular cord consists of D-Inside wiring with RJ-45 plugs on each end. The
connection between a repeater and a workstation consists of four pairs of
straight-through, D-Inside wiring (the repeater uses only two pairs), as shown in
Figure 3-3:
