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LANMaster™ T8 8-Port Ethernet™ Repeater Hub
20
CAUTION: RJ connectors are NOT INTENDED FOR
CONNECTION TO THE PUBLIC TELEPHONE
NETWORK. Failure to observe this caution could result
in damage to the public telephone network.
Compliance Information
UL Listed
C-UL Listed (Canada)
CISPR/EN55022 Class A
FCC Regulations
This equipment has been tested and found to comply with the limits for a class
A digital device, pursuant to part 15 of the FCC rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user
will be required to correct the interference at the user’s own expense.
Canadian Regulations
This digital apparatus does not exceed the Class A limits for radio noise for
digital apparatus set out on the radio interference regulations of the Canadian
Department of Communications.
European Regulations
Warning
This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.
Copyright Restrictions
© 1997 TRANSITION Networks.
All rights reserved. No part of this work may be reproduced or used in any
form or by any means – graphic, electronic, or mechanical – without written
permission from TRANSITION Networks.
Trademark Notice
All registered trademarks and trademarks are the property of their respective
owners.
Der Anschluss dieses Gerätes an ein öffentlickes
Telekommunikationsnetz in den EG-Mitgliedstaaten verstösst gegen die
jeweligen einzelstaatlichen Gesetze zur Anwendung der Richtlinie
91/263/EWG zur Angleichung der Rechtsvorschriften der
Mitgliedstaaten über Telekommunikationsendeinrichtungen
einschliesslich der gegenseitigen Anerkennung ihrer Konformität.
10BASE-2 Cable Specifications
The physical characteristics of the 10BASE-2 cable must meet or exceed IEEE 802.3
10BASE-2 specifications.
Cable Characteristics:
Cable type: Stranded Coaxial RG58 (ThinNet)
Impedance: 50 Ω @ 10 MHz
Mutual Capacitance: 24 pF/ft ±20% @ 10 MHz
Maximum Cable Length
: 185 meters (610 feet)
Maximum number network connections:30
Minimum distance between connections: 0.5 meters (1.6 feet)
Terminate 10BASE-2 cable at one end using a 50 ohm terminator and at the
other end using a 50 ohm terminator grounded to earth ground.
10BASE-T Cable and Connector Specifications
The physical characteristics of the 10BASE-T cable must meet or exceed IEEE
802.3 10BASE-T specifications.
10BASE-T Cable Characteristics:
Category 3 wire or better is required; category 5 wire is recommended. Either
shielded twisted pair (STP) or unshielded twisted pair (UTP) can be used. DO
NOT USE FLAT OR SILVER SATIN WIRE.
Category 3:
Gauge 24 to 22 AWG
Attenuation 28 dB/1000’ @ 10 MHz
Differential Characteristic Impedance 100 Ω ±10% @ 10 MHz
Category 5:
Gauge 24 to 22 AWG
Attenuation 20 dB/1000’ @ 10 MHz
Differential Characteristic Impedance 100 Ω ±10% @ 10 MHz
Maximum Cable Length: 100 meters (330 feet)
10BASE-T Connector Characteristics:
The two active pairs in a 10BASE-T network are pins 1 & 2 and pins 3 & 6.
Use only dedicated wire pairs (such as blue/white & white/blue, orange/white
& white/orange) for the active pins. 10BASE-T cable for unlike devices (such as
hub to terminal device) must be configured as straight through; 10BASE-T
cable for like devices (such as hub to hub or terminal device to terminal
device) must be configured as crossover.
Twisted
Pair #1
Twisted
Pair #2
Crossover Cable
Connectors for like devices
1
2
3
6
1
2
3
6
1
2
3
6
Twisted
Pair #1
Twisted
Pair #2
Straight Through Cable
Connectors for unlike devices
1
2
3
6