SMC Networks SMC108DT manual Cables, Cable Specifications Cable Types and Specifications

Page 16

CABLES

Cable Specifications

Cable Types and Specifications

 

Cable

Type

Max. Length

Connector

 

 

10BASE-T

Cat. 3, 4, 5 100-

100m (328 ft)

RJ-45

 

 

 

ohm UTP

 

 

 

 

100BASE-TX

Cat. 5 100-ohm

100m (328 ft)

RJ-45

 

 

 

UTP

 

 

 

 

 

 

 

 

 

Twisted-Pair Cable and Pin Assignments

Caution: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair cables with RJ-45 connectors that conform to FCC standards.

For 10BASE-T/100BASE-TX connections, a twisted-pair cable must have two pairs of wires. Each wire pair is identified by two different colors. For example, one wire might be red and the other, red with white stripes. Also, an RJ-45 connector must be attached to both ends of the cable.

Caution: Each wire pair must be attached to the RJ-45 connectors in a specific orientation.

10BASE-T/100BASE-TX Pin Assignments

With standard straight-through 10BASE-T/100BASE-TX cable, pins 1 and 2 are used for transmitting data, and pins 3 and 6 for receiving data. The ‘+’ and ‘-‘ signs in the table below are used to represent the polari- ty of the wires that make up each wire pair.

Because all ports on this switch support automatic MDI/MDI-X opera- tion, you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs.

 

 

Straight-through RJ-45 Pin Assignment

 

 

End 1

End 2

 

 

1 (Tx +)

1 (Tx+)

 

 

2 (Tx -)

2 (Tx -)

 

 

3 (Rx+)

3 (Rx+)

 

 

6 (Rx-)

6 (Rx-)

 

 

 

 

 

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Contents EZ Switch 10/100 Copyright Limited Warranty Page Page Safety Compliance CompliancesPage Table of Contents About the EZ Switch 10/100 Features and BenefitsPort and Switch status LEDs Top Panel LEDsRear Panel Installing the Switch Selecting a SiteInstructions Sample Applications High-Speed Switch linksStandalone LAN Troubleshooting Possible SolutionsProbable cause Probable CausesCable Specifications Cable Types and Specifications CablesTwisted-Pair Cable and Pin Assignments 10BASE-T/100BASE-TX Pin AssignmentsConnectivity Guidelines Specifications Standards For Technical SUPPORT, Call