Transition Networks TX12 Fast Ethernet Ioobase-X Cable Specifications, Table of Contents

FAST ETHERNET (IOOBASE-X)

CABLE SPECIFICATIONS

Due to the limited collision domain in 100BASE-X, use the shortest cables possible to make a connection between any two devices. Where collisions are not a consideration (full duplex), longer cable may be possible.

Effective cable distances are determined by ambient RF noise and by signal loss in the cable. Since fiber has low signal loss/meter and invulnerability to RF noise, fiber is the preferred medium for extending distances.

100BASE-FX Cable and Connector Specifications

The physical characteristics of the 100BASE-FX cable must meet or exceed IEEE 802.3 100BASE-FX specifications.

100BASE-FX CABLE SPECIFICATIONS

Fiber Optic Cable Recommended:	62.5 / 125 µm multimode fiber
Optional:	100 / 140 µm multimode fiber
	85 / 125 µm multimode fiber
	50 / 125 µm multimode fiber
Fiber Optic Transmitter Power:
Average power:	-19.0 dBm
Fiber Optic Receiver Sensitivity:
Average sensitivity:	-33.5 dBm
Bit error rate:	≤ 10-10
Maximum Cable Distance:	2000 meters (6500 feet)

100BASE-FX CONNECTOR CHARACTERISTICS:

The 100BASE-FX connectors are standard ST connectors. SC connectors are available.

Table of Contents

1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1

The StackMaster TX12 Hub . . . . . . . . . . . . . . . . . . . . . . . . . .1

StackMaster TX12 Hub Features . . . . . . . . . . . . . . . . . . . . . . . .1 Networking the StackMaster TX12 Hub . . . . . . . . . . . . . . . . . . .2

StackMaster TX12 Hub Connectors and Status LEDs . . . . . . .3

RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

SCSI Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2 SITE CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . 4 3 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unpacking 12-Port Stackable Hub . . . . . . . . . . . . . . . . . . . . .5 Installing StackMaster™ TX12 in 19-inch Rack . . . . . . . . . . .6 Optionally Cascading 12-Port Stackable Hubs . . . . . . . . . . . .7

Using Port 12 to Cascade Two Hubs . . . . . . . . . . . . . . . . . . . . .7 Using SCSI Connectors to Cascade Stacked Hubs . . . . . . . . . . .8

Connecting 100BASE-TX Cable . . . . . . . . . . . . . . . . . . . . . . .9 Connecting Power to StackMaster™ TX12 . . . . . . . . . . . . . .10

4 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 12

Fault Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Technical Support Contact . . . . . . . . . . . . . . . . . . . . . . . . .12

WARRANTY STATEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CABLE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

STACKMASTER TX12 HUB SPECIFICATIONS. . . . . . . . . . . 17

15 StackMaster™ TX12 100BASE-TX 12-Port Stackable Hub i