Model 0403
14
1
Ethernet™ Pocket Hub™
1. INTRODUCTION
This guide is intended for the system or network administrator
responsible for installing and monitoring a TRANSITION Networks
0403 Ethernet Pocket Hub. A working knowledge of local area
network (LAN) operations, including familiarity with
communications protocols used on interconnected LANs, is
assumed.
The 0403 Ethernet Pocket Hub
The Model 0403 10BaseT 4-Port Ethernet Hub (E-TBT-HB-0403), is
a low cost Ethernet repeater. Designed to meet IEEE 802.3 10BaseT
standards, the 0403 Pocket Hub is a fully functional repeater in a
compact (4.80" X 2.77" X 0.95”) case.
0403 Ethernet Pocket Hub Features
•
automatic link partitioning (jabber function isolates network
failures)
•
preamble regeneration
•
automatic polarity detection and correction
Ethernet™
Pocket Hub™
4 3 2 1
Power
1
2
3
4
E-TBT-0403
Link/Transmit
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T R A N S I T I O N
Mpls, MN 55344
Cable Specifications
Cable Characteristics
The physical characteristics of the 10BaseT cable must meet or exceed
IEEE 802.3 10BaseT specifications.
10BaseT Cable Specifications
Either shielded or unshielded twisted pair can be used. Level 3 wire or
better is recommended.
• Gauge. . . . . . . . . . . . . . . . . . 26 to 22 AWG
• Attenuation . . . . . . . . . . . . . Less than 11.5 dB @ 5-10 MHz
• Differential Characteristic . . 85 -110
Ω
Impedance
@ 10 MHz
• Maximum Distance . . . . . . . 100 Meters (330 Feet)
Segment Distance
Media
Maximum
Maximum
Minimum
Maximum
Segment
Number
Segment
Medium Medium
Type
MAU/
Length
Propagation
End to End
Segment
(meters)
Velocity
†
Propagation
Delay/Segment
10Base2
30
185
0.65 c
950
10BaseT
2
100
†††
0.59 c
1000
†
c = 3 x 10
8
meters/second
†††
Maximum segment length depends on the cable characteristics
