TRANSITION Networks, Inc.
24 Port 10BaseT Ethernet Hub
Model E-TBT-HB-1002
Installation Manual
Introduction
The 24 port 10BaseT Ethernet hub, Model E-TBT-HB-1002,
is an Ethernet repeater that provides an economical and
efficient networking system. It is rack mountable and is
designed to meet the IEEE 802.3 10BaseT standards.
Several repeaters can be cascaded together via
thicknet/thinnet coaxial cable, fiber optic cable and/or twist-
ed pair cable to build a large Ethernet network. The 24 port
hub allows simple installation and expansion flexibility for
your future networking requirements.
About 10BaseT (twisted pair) Topology
The IEEE 802.3 10BaseT specification is defined as
Ethernet across twisted pair wire. This new technology for
Ethernet (across twisted pair wire) represents a step forward
in network cabling and management. Since 10BaseT uti-
lizes twisted pair wire, the cost of networking is considerably
less expensive than using coaxial cables. It is also much
easier to install since it uses RJ-45 modular connectors.
Ethernet thick and thin (coax) networks are designed in a
linear “bus” or “daisy chain” topology where 10BaseT (twist-
ed pair) networks are designed in a “star” type topology. In
a “star” topology the hub is located in the center of the con-
figuration, with the individual nodes connected to the hub,
spread out like spokes on a wheel. In a linear or “bus”
topology, if you disconnect a device or accidentally open a
Table 3: Approved European Power Cord Set Information
Alternate Markings
Surface
Utilizing
Printed or Embossed
black-red-yellow
Harmonization
(thread length/mm)
Approval Organization
Marking Black Red
Yellow
Belgium:
Comite Electro-
CEBEC-HAR
10
30
10
technique Beige (CEBEC)
Verband Deutscher Elektro-
VDE-HAR
30
10
10
techniker (VDE)e, V., Prufstelle
Technique de l'Electricite (UTE) UTE-HAR
30
30
10
Institute del Marchio Qualita
IEMMEQU-HAR
10
30
50
British Approvals Service for
BASEC-HAR
10
10
30
Electric Cables (BASEC)
N.V. tot Keuring van Electro- KEMA-KEUR-HAR
10
30
30
technische Matarialien (KEMA)
Svenska Elecktriska (SMEKO) SEMKO-HAR
10
10
50
Osterreichnischer Verband fur
OVE-HAR
30
10
50
Electrotechnik (OVE)
Danmarks Elektriske (DEMKO) DEMKO-HAR
30
10
30
Materielkontroll
Institute for Industrial (IIRS)
IIRS-HAR
30
30
50
Research and Standards
Norges Elektriske (NEMKO)
NEMKO-HAR
10
10
70
Materielkontroll
National Standards Authority
NSAI-HAR
30
30
50
of Ireland (NSAI)
