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Table of Contents
1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1
The LAN Master™ TX8 Hub . . . . . . . . . . . . . . . . . . . . . . . . .1
LAN Master™ TX8 Hub Features . . . . . . . . . . . . . . . . . . . . . . . .1
Networking the LAN Master™ TX8 Hub . . . . . . . . . . . . . . . . . .2
LAN Master™ TX8 Hub Connectors and Status LEDs . . . . . . .3
RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 SITE CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . 4
3 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unpacking the LAN Master™ TX8 . . . . . . . . . . . . . . . . . . . . .5
Installing LAN Master™ TX8 in 19-inch Rack . . . . . . . . . . . .6
Optionally Cascading Two LAN Master™ TX8 Hubs . . . . . . .7
Connecting 100BASE-TX Cable . . . . . . . . . . . . . . . . . . . . . . .8
Connecting Power to LAN Master™ TX8 . . . . . . . . . . . . . . . .9
4 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fault Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Technical Support Contact . . . . . . . . . . . . . . . . . . . . . . . . .11
WARRANTY STATEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CABLE SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
LAN MASTER™ TX8 HUB SPECIFICATIONS . . . . . . . . . . . 16
LAN Master™ TX8
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15
100BASE-TX 8-Port Hub
100BASE-TX Cable and Connector Specifications
The physical characteristics of the 100BASE-TX cable must meet or
exceed IEEE 802.3u 100BASE-TX specifications.
100BASE-TX CABLE SPECIFICATIONS
Category 5 wire or better is required. Either shielded twisted pair
(STP) or unshielded twisted pair (UTP) can be used. DO NOT USE
FLAT OR SILVER SATIN WIRE.
Category 5:
Gauge 24 to 22 AWG
Attenuation 20 dB/1000’ @ 10 MHz
Impedance 100 Ω ±10% @ 10 MHz
Maximum Cable Distance: 100 meters (330 feet)
100BASE-TX CONNECTOR CHARACTERISTICS:
The 100BASE-TX connectors are standard RJ-45 connectors with
standard pinning.
The two active pairs in a 100BASE-TX 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.
100BASE-TX cable for unlike devices (such as hub to terminal
device) must be configured as straight through; 100BASE-TX cable
for like devices (such as hub to hub or terminal device to terminal
device) must be configured as crossover.
NOTE: MDI/MDI-X connectors on hubs allow straight-through
cable to be used in a crossover configuration for hub to hub
connection.
Twisted
Pair #1
Twisted
Pair #2
Crossover Cable
Connectors for like devices
Twisted
Pair #1
Twisted
Pair #2
Straight Through Cable
Connectors for unlike devices