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Cabletron Systems pmn manual A schematic of a crossover cable is shown in Figure

Models: pmn

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A schematic of a crossover cable is shown in Figure 3-10.

Chapter 3: Installation

Position X (crossed over)

1.RX+ 5. NC

2.RX- 6. TX-

3.TX+ 7. NC

4.NC 8. NC

x

 

 

 

=

 

 

 

 

 

10

100

FE-100TX

Position =

(not crossed over)

1.TX+ 5. NC

2.TX- 6. RX-

3.RX+ 7. NC

4.NC 8. NC

16651_05

Figure 3-9 FE-100TX Crossover Switch

A schematic of a crossover cable is shown in Figure 3-10.

NOTE:

RX+/RX– and TX+/TX– must share a common color pair.

 

TO

 

 

 

 

 

TO

 

RJ45 Port

 

10BASE-T Device Port

RX+

 

 

 

 

 

 

 

 

 

RX+

1

 

 

 

 

 

 

 

1

RX–

2

 

 

 

 

 

 

 

2

RX–

TX+

3

 

 

 

 

 

 

 

3

TX+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TX–

6

 

 

 

 

 

 

 

6

TX–

 

 

 

 

 

RJ45 to RJ45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2251-31

Figure 3-10 Schematic of Crossover Cable

Connect an FE-100TX to a twisted pair segment as follows:

1.Ensure that the device connected to the other end of the segment is powered ON.

2.Connect the twisted pair segment to the module by inserting the RJ45 connector on the twisted pair segment into the RJ45 port on the module shown in Figure 3-9.

3.Verify that a link exists by checking that the port RX LED is ON (flashing amber, blinking green, or solid green). If the RX LED is OFF and the TX LED is not blinking amber, perform the following steps until it is on:

a.Verify that the 100BASE-TX device at the other end of the twisted pair segment is powered up.

3-12

2M46-04R/2M46-04RDC User’s Guide

Page 35 Page 37
Page 36
Image 36
Cabletron Systems pmn manual A schematic of a crossover cable is shown in Figure
Page 35 Page 37