Universal Scheu Company 1005 - Manual (Page 2)

Model 1005 24-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
© 1995, 1996 TRANSITION Networks Inc.
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 Inc.
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.
10Base2 Cable Specifications
The physical characteristics of the 10Base2 cable must meet or exceed IEEE 802.3
10Base2 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 10Base2 cable at one end using a 50 ohm terminator and at the
other end using a 50 ohm terminator grounded to earth ground.
10BaseT Cable and Connector Specifications
The physical characteristics of the 10BaseT cable must meet or exceed IEEE 802.3
10BaseT specifications.
10BaseT 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)
10BaseT Connector Characteristics:
The two active pairs in a 10BaseT 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. 10BaseT cable for unlike devices (such as
hub to terminal device) must be configured as straight through; 10BaseT 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